Klaviyo jobs

Lead Solution Architect (Presales) Milan, IT At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. About the Role At Klaviyo, our Sales team prides itself on being genuine experts in marketing and product-not just closers. As a Lead Solutions Architect working with our Mid-Market and Enterprise segment, you'll be at the heart of some of our most strategic deals, helping prospects and clients understand exactly how Klaviyo fits into-and elevates-their technology stack. We're growing our presence in Italy, and this is a unique opportunity to join as a founding member of that effort. You'll work directly with prospects, clients, and partners to build deep technical relationships, design solutions, and create the kind of trust that turns evaluations into long-term partnerships. You'll bring a consultant-first mindset, a builder's instinct, and the credibility to operate confidently from developer to C-suite. How You'll Make a Difference - Transform workflows by putting AI at the center, building smarter systems and ways of working from the ground up. - Continuously experiment with AI tools-testing, learning, and sharing insights to keep the

Commercial Manager Sydney, AU At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Commercial Sales Manager ABOUT THE ROLE Klaviyo is the marketing automation platform powering the world's fastest-growing ecommerce brands. As a Commercial Sales Manager, you'll lead a team of Account Executives responsible for bringing net new merchants onto the Klaviyo platform - to win a generation of brands rethinking how they own their customer relationships. You'll build a team that wins consistently, runs a disciplined sales process, and moves quickly in a high-velocity, high-transaction segment. This is a role for a leader who is equally comfortable in the weeds of a deal review and in front of a whiteboard designing a coaching plan. TEAM LEADERSHIP RESPONSIBILITIES - Recruit, interview, hire, onboard, and retain top commercial AE talent - Inspect the daily workflow of your team - pipeline hygiene, activity cadence, deal velocity - to drive KPI accountability and surface coaching opportunities in real time - Run structured weekly 1:1s and team meetings that reinforce priorities, sharpen skills, and sustain a high-performance culture - Build

Principal Financial Analyst - Corporate Planning & G&A Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. About the Role Klaviyo is seeking a motivated Principal Financial Analyst to join the FP&A team supporting Corporate and G&A functions. This role serves as a strategic finance partner to senior leaders across People, Legal, Finance, IT, and Facilities, while also driving corporate-level planning, forecasting, and decision support. This role will work closely with cross-functional teams to provide financial analysis, reporting, and recommendations that contribute to the overall success of Klaviyo. This is a fantastic opportunity for a candidate that wants to be part of a dynamic FP&A organization that is scaling for the future. The ideal candidate is highly motivated, a problem-solver, a team player, detail-oriented, analytical, and outstanding at foundational FP&A. This candidate is able to effectively translate financial guardrails and insights into actionable decisions for stakeholders. This candidate will be responsible for both owning core G&A FP&A workstreams as well as supporting corporate FP&A operating rhythm. How You Will Make a Difference Corporate FP&A

Engineering Manager - SMS Delivery Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. About the Role The SMS Delivery team owns Klaviyo's mobile sender platform: the systems that allow brands to select, register, and activate the sender identities they use to send messages on SMS, RCS, WhatsApp, and future mobile channels. Mobile is one of Klaviyo's fastest-growing product areas, and this team's platform sits in the path of every customer who adopts a mobile channel. As Engineering Manager, SMS Delivery, you will lead a team of backend and full-stack engineers building this platform. You will own the team's roadmap, technical direction, and operational health. You will work closely with Product, Compliance, Data Science, and adjacent mobile channel teams to deliver self-serve sender registration and KYC, registration lifecycle visibility for customers, and the cross-channel sender management framework that future channels will build on. This is a hands-on technical leadership role. You will set direction, lead design reviews, mentor senior engineers, and contribute to code where it has the most leverage. How You Will Make

Enterprise Sales Specialist - Customer Agent London, UK At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Klaviyo is seeking a Sales Specialist to accelerate growth of our Customer Agent product within K:Service. This is a dedicated, revenue-focused specialist seller role designed to drive pipeline generation, increase close rates, and work closely to support both internal Klaviyo sellers and partners on Customer Agent opportunities. This role is not a technical overlay or solutions architect position. Instead, it is a focused commercial specialist who partners closely with Account Executives, Product, and Solutions teams to create near-term revenue impact and drive Customer Agent adoption across segments. The Product Specialist will report directly to the Segment Director and will be deployed strategically across: - Pipeline generation initiatives - High-priority in-flight pursuits - Strategic partnership opportunities - Upmarket expansion motions This is a high-visibility role designed to create immediate impact and accelerate Customer Agent growth. What you'll do: Revenue Acceleration & Pipeline Generation - Own dedicated pipeline generation efforts for Customer Agent within assigned segment - Partner with AEs to

Lead Pre-Sales Solution Engineer - Central Europe Munich, DE At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. At Klaviyo, our sales team prides itself on being experts in marketing and product. While most companies hire pre-sales Solutions Architects to give demos, fill out questionnaires, and explain product configurations, that bores us. As a pre-sales Solutions Architect working on the mid-market and enterprise segment, you will be responsible for facilitating deep, long-term relationships with our Prospects, Clients, and Partners to help strengthen our position as the market leader in B2C CRM. We are opening our Munich office to support our development in Germany - this is a unique opportunity to join the founding team during our international growth phase. What do we do as Solutions Architects? We work directly with our potential and existing clients to create technical champions and help envision the use and integration of Klaviyo into our clients' and prospects' technology stacks. We dive deep, adopt a consultant-first mindset, and develop solutions that ensure the long-term success of our clients. We use these

Manager, People Technology (Workday) Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. We have an incredible team at Klaviyo - collaborative, diverse, fun - and we won't settle for less. We're looking for a Manager, People Technology to join our team. This is equal parts systems thinker, problem solver, and leader. If you like untangling messy processes, building smarter systems, and improving user experiences, you'll thrive here. This role will report directly to the Senior Manager, People Technology and play a key part in shaping how People Technology supports Klaviyo employees globally through thoughtful system design, strong team leadership, and a focus on leveraging AI to drive smarter, more scalable solutions. What you'll do: Own your domain - Be the go-to owner for your Workday modules - Utilize your team to configure, optimize, and continuously improve how these modules work together - Drive enhancements, releases, and fixes, not just maintain the status quo - Heavy focus on improving the end user experience (employee, manager & stakeholder personas) - Manage and drive projects end-to-end,

Pre-Sales Solutions Engineer (Italian Speaking) Dublin, IE At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Pre-Sales Solutions Engineer Commercial | EMEA | Italian Speaking About the Opportunity Solutions Engineers at Klaviyo are technical sellers at the heart of our revenue motion. We don't just demo software. We work as trusted advisors, helping fast-growing commercial businesses understand how Klaviyo can solve their real challenges, and then we prove it. We're looking for a Pre-Sales Solutions Engineer to join our EMEA Commercial team, covering the Entrepreneur and SMB segment. This is a great opportunity for someone early in their pre-sales career who is curious, eager to learn, and excited by the intersection of technology and sales. You don't need to have all the answers on day one. What matters is that you ask great questions, pick things up quickly, and genuinely want to help customers succeed. You'll work alongside Account Executives across the Italian-speaking market and wider EMEA region, supporting the technical side of deals and building your skills in a collaborative, high-energy team environment. What We

Associate Growth Specialist, Italian & Spanish Speaker Dublin, IE At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Dublin, Ireland (Hybrid: 3 days p/week in-office) Full-time permanent contract About the Team and Role As an Inbound Growth Specialist (iGS) , you are the first human touchpoint for a high volume of inbound demo requests and free Klaviyo accounts . You provide fast, high‑quality first interactions with Klaviyo's smallest accounts to create a seamless experience from first touch through purchase. This team sits within the Marketing organization as part of the Growth motion and partners closely with Sales, Business Development, Product, and Customer Success. The primary goal of this role is to acquire as many high‑quality new logos as possible while maintaining an exceptional customer experience. You will: - Field inbound demand (demos, trials, free accounts, and product inquiries) via phone, email, and other channels. - Run consultative, decision‑driven demos focused on one‑call closes whenever possible for smaller opportunities. - Do targeted business discovery to understand goals, urgency, and fit. - Qualify in or out efficiently ,

Senior Sales Operations Analyst Singapore At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. About the Team Operations is a core pillar of Klaviyo's global Go-to-Market organization. We provide the insights and design, build, and maintain the systems and processes our customer-facing teams rely on to accelerate revenue. In APAC, we partner closely with GTM leadership across Sales, Partnerships, Marketing and Customer Success to achieve our revenue targets for the region. As Klaviyo continues to grow in APAC and expand into new markets, the APAC Operations team plays a critical role in leading strategy & planning, driving operational excellence and connecting the dots across lead management, pipeline analytics, forecasting and customer growth and retention. The team also owns management reporting and the administration of the company's sales policy and systems. About the Role As the Senior Sales Operations Analyst APAC, you will own the analytics, processes, and reporting that empower our customer-facing GTM teams to exceed pipeline and ARR targets. You'll join at an inflection point-helping to build scalable frameworks in a hyper-growth environment, while shaping

Lead AI Software Engineer Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Lead AI Engineer At Klaviyo, we believe the future of software lies not in productivity tools for human users but in systems that can learn, run, and optimize themselves based on measurable outcomes. We've built the infrastructure and applications that power the interface between businesses and consumers - supporting over 182,000 customers , billions of consumer profiles , and hundreds of billions of customer interactions . Now, we're building the next generation of AI and machine learning technologies to power these products - enabling AI agents that can automatically create, execute, and optimize marketing and customer experience strategies for any business. As a Lead AI Engineer , you'll take ownership of designing, building, and scaling the backend and machine learning systems that form the foundation of Klaviyo's AI strategy. You'll partner closely with product managers, data scientists, and engineers to deliver intelligent, outcome-driven systems that operate at massive scale - while mentoring others and setting technical direction for the team. How

Senior Software Engineer - Profiles, Lists and Segments Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Why You Should Join the PLS (Profiles, Lists and Segments) Team: The PLS team is responsible for building and scaling the core customer data experiences at Klaviyo - profiles, lists, and real-time segments . We own the tools that let customers understand who their users are, group them into meaningful audiences, and keep those audiences up to date as new data flows in. Our work underpins how customers target, personalize, and measure every message they send, making this product area core to Klaviyo's continued success. As a Senior Software Engineer on the team, you'll play a key role in designing and building scalable systems that power how customers manage and activate their data. Partnering closely with product managers, data scientists, and other platform teams, you'll help define scope, translate complex data and UX problems into practical implementations, and build intuitive workflows that give customers confidence in their audiences. This role leans frontend, with a strong focus on

Product Marketing Lead - Launches Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. We're looking for a Product Marketer who's excited to help shape how the world understands Klaviyo. This role sits at the heart of our product storytelling. You'll help define the big-picture narrative that brings our products, platform, and vision together and make sure it shows up clearly and consistently everywhere from launches and campaigns to executive keynotes and major events. You'll play a meaningful role in how Klaviyo is positioned with the market, with executive and functional buyers, and across our internal teams. That means getting deep into our products, understanding the problems our customers are trying to solve, and translating all of that into messaging that's clear, compelling, and genuinely useful. A big part of this role is launches. You'll help lead go-to-market efforts for major product and platform moments, working closely with Product, R&D, and cross-functional partners to turn innovation into stories that drive excitement, adoption, and momentum. You'll also contribute to flagship events and keynote storytelling, partnering

Lead Product Designer, AI & Analytics Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. We're Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny by making first party data accessible and actionable like never before. We see limitless potential for the technology we're developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators-ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you're ready to do the best work of your career, where you'll be welcomed as your whole self from day one and supported with generous benefits, we hope you'll join us. About the Role At Klaviyo, we're building the platform that helps businesses create and deliver personalized customer experiences at scale, powered by first-party data. We're looking for product designers to help shape that future. This role focuses on simplifying complex systems, improving usability, and designing experiences that help customers move faster and make better decisions. We're looking for a Lead Product Designer to

Senior Software Engineer, Agent Platform Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Senior Software Engineer - Agent Platform At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We've built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and follow-on conversion data. We have a big opportunity to build state-of-the-art AI and machine learning technologies at Klaviyo to power our products and develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business. As a Senior Software Engineer, Agent Platform , you'll play a key role in designing and scaling the backend systems that power our AI products and agent solutions. This backend-heavy role gives you opportunities to influence architecture, async processing, and distributed systems. You'll collaborate closely with product managers,

Senior Lead Software Engineer - Messaging Infrastructure Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. About Klaviyo Klaviyo is a leading marketing automation platform that helps businesses grow by delivering personalized experiences. Our mission is to empower creators to own their destiny. We believe in providing an exceptional developer experience that enables our engineering teams to build and ship high-quality software efficiently and with confidence. About the Team The Messaging Infra organization at Klaviyo is focused on high-growth customer engagement through various messaging channels (email, SMS/MMS/RCS, mobile push, WhatsApp, and more). We work with multiple stakeholders to provide best-in-class service and reliability to connect a wide range of businesses, from entrepreneurs to enterprises, with their end users. The messaging platform is a mission-critical system, responsible for delivering billions of messages, and must be architected for massive scale and reliability. As a Senior Lead Software Engineer within the Messaging Infra organization, you will serve as the primary technical architect for our high-volume message delivery systems while driving the overarching technical vision for channel expansion.

Senior Manager, Mid- Enterprise Partner Sales Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. At Klaviyo, the partnerships team prides themselves on being marketing and product experts. As a Senior Manager, Mid-Enterprise PAMs, you will oversee a team of Partner Account Managers, ensuring they are set up for success to achieve their goals. These goals will also be met by working on a variety of initiatives that ultimately will benefit the ongoing partner experience. This includes, but is not limited to overseeing and iterating on our partner engagement model, aligning with our Partner Marketing team, and driving revenue. You will leverage strong communication and consultative skills to understand your team's needs and establish a growth strategy so that your team is able to hit various goals presented to them. The Senior Manager, Mid-Enterprise Partner Account Managers recruits, trains, develops and supports experienced Partner Managers working within the Mid-Enterprise and enterprise segment to ensure that they meet specific new business goals on a weekly, monthly, quarterly and annual basis. Responsible for training and developing

Director, Product Marketing Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. We're looking for a Director of Product Marketing to lead the core positioning, messaging, and go-to-market of our Klaviyo Marketing (aka K:Marketing) solution line. You're a leader who wants to establish a strong POV and voice that cuts through the noise in the marketing automation software landscape. As competitors expand into full suites and AI-focused startups pop up, you and your team will be tasked with driving category leadership across our full omnichannel suite - including our newest frontier: AI agents that do the work of marketing for B2C brands. If you thrive in a fast-paced, dynamic environment, love both the art and science of storytelling, and want to not only do the best work of your career, but also inspire and coach our team of passionate product marketers to do the best work of their careers, this role is for you! How you'll make a difference: Lead a team of product marketers who are responsible for: - Crafting differentiated, unified positioning

Principal Enablement Partner, BDR Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Our GTM Enablement team supports 1000+ sales and customer success professionals driving revenue and growth at one of the fastest-growing publicly traded companies in the SaaS industry. We Pride ourselves on being a reliable, real-time, and consistent resource for the Sales and CS Teams, and empowering them to do their jobs more efficiently while growing their skill set and enabling Klaviyo's long term strategy. Our team is growing and we are currently looking for a Principal Enablement Partner to partner with our Global BDR org. You will be a strategic advisor to BDR leadership and responsible for building the enablement strategy to empower their growth and achieve results. As a strategic partner to many cross-functional teams around the company, you will act as the voice and representative of the BDR Organization as your end customer. Your objective is to create an exceptional and equitable learning experience that empowers our BDR team to achieve their full potential, ensuring their success and fostering

Senior Security Engineer - Detection and Response Denver, CO At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Klaviyo is looking for a Senior Security Engineer to add to our growing Detection and Response (D&R) Team. This is a hands-on technical role that involves building and maintaining secure, reliable, and scalable detection and response systems to enhance our security observability capabilities. This role will also be responsible for participating in full end-to-end detection development and response lifecycle and support with threat response operations. As a Senior Security Engineer, you will have the opportunity to leverage your security and engineering skills to provide thought leadership, solve complex security challenges and ultimately improve Klaviyo's overall security posture. How you will make a difference: - Build systems that facilitate security observability for detection and response - Develop AI-first security systems to automate detection and response operations - Onboard, normalize and optimize security logging data for large-scale data analysis, detection engineering, deployment of ML models, and efficient querying during incidents. - Develop high-fidelity rule-based and/or ML-based detections as code -

Senior Software Engineer - Developer Infrastructure Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Why You Should Join the Developer Infrastructure Team Our core focus is empowering engineers to ship code efficiently and safely. We own the build systems, dependency lifecycle, and platform infrastructure that underpin every engineer's daily workflow. As a Senior Software Engineer on this team, you will help define and execute the technical roadmap for Klaviyo's backend platform - from dependency management and major framework upgrades to developer productivity tools that reduce toil and accelerate velocity. By building and maintaining the foundational systems that keep our codebase healthy and scalable, you will play a pivotal role in ensuring every engineer at Klaviyo can move fast with confidence. What You'll Achieve: Key Responsibilities As a Senior Software Engineer for this team, you will drive the evolution of our developer platform across the organization: - Dependency Management: Analyze, optimize, and secure backend and third-party dependencies across the codebase. Build frameworks for evaluating risk and ensuring our dependency graph stays healthy, performant, and

Senior Software Engineer - Email Platforms Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Why You Should Join the Email Platforms Team: The Email Platforms team at Klaviyo is building the next generation of infrastructure to support reliable, scalable, and performant email delivery. Our mission is to help Klaviyo reach enterprise scale by evolving and owning our email sending pipeline end-to-end. We're investing heavily in our homegrown email delivery infrastructure, giving us greater control, performance, and reliability in how we deliver emails for some of the largest brands in the world. You'll join a high-impact, high-ownership team tackling technical challenges around high-throughput systems, distributed messaging, and service performance at scale. Our work directly impacts customer satisfaction and business success. If you're excited about email infrastructure, systems design, and high-scale backend development in Go, this is the role for you. How You Will Make a Difference: - Own and drive key components of the email pipeline architecture - Design and implement scalable, high-throughput services in Go - Develop systems that manage message queues and

Senior Software Engineer, Infrastructure Security Dublin, IE At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. - Team Overview: The Infrastructure Security team makes it simple and easy for engineers to make secure choices while developing world class software at high speed. Security is built in by default, seamless, and effortless, making engineers' lives better and Klaviyo more secure. Our work spans security, infrastructure, and software development, requiring us to understand systems and engineering. We build complex, foundational solutions that must be extremely reliable, secure, and performant at global scale. This role is for senior engineers who enjoy turning real-world problems into reliable, scalable solutions. The work is highly visible and has a direct impact on how hundreds of Klaviyos get their work done every day, and 100's of thousands of customers use our products with confidence. How you'll make an impact: The Infrastructure Security team builds the internal platforms, systems, and services that serve as the foundational building blocks for how our engineers build securely every day. As a Senior Software Engineer on Infrastructure Security,

Lead Security Engineer, Enterprise Security Denver, CO At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. As a Lead Security Engineer on the Enterprise Security team, you'll play a central role in securing the corporate systems and platforms that Klaviyo runs on - spanning critical SaaS applications, identity and access, endpoints, Zero Trust network architecture, and perimeter security. You'll partner across Engineering, IT, and the broader Security organization to mature existing programs, introduce new capabilities, and ensure our corporate security posture keeps pace with a fast-moving, AI-first company. This is a hands-on technical leadership role. You'll be expected to deliver complex, cross-functional projects end to end, establish the design patterns and standards your team works from, and mentor the engineers around you. You bring deep expertise in at least one enterprise security domain and the range to work credibly across several others. At Klaviyo, AI fluency isn't optional - it's foundational. You'll lead with AI at every stage of your work, from designing solutions to iterating on implementations, and you'll take full ownership of the quality