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We partner with some of America's largest mortgage lenders to transform their contact centers and compliance operations with AI voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we're redefining how millions of borrowers interact with financial institutions. This is a rare chance to join at the ground floor of a company already plugged into large-scale customers and real production use cases. ROLE OVERVIEW We are looking for a part-time AI Trainer with experience operating phones in the mortgage industry. You will help improve our AI system by providing feedback on conversations, annotating data, and testing for quality. If you have worked as a customer service or collections agent for a mortgage servicer, this role is a great fit to use your knowledge to train AI in real-world scenarios. RESPONSIBILITIES - Annotate and label data from mortgage-related conversations. - Give feedback on AI responses to make them more accurate and helpful. - Train the AI system to handle mortgage servicing phone calls better. - Test the AI for issues, including response quality, customer experience, explanation quality, and realism. - Work ~10 hours per week on flexible schedules. REQUIREMENTS - 5+ years a customer service agent for a mortgage servicing company. - Knowledge of the mortgage industry, including escrow, payment questions, loss mitigation calls, QRPC requirements, servicing transfer questions, and customer conversations. - Strong attention to detail and communication", "parental_leave_weeks": null, "non_birth_parent_leave_weeks": null, "parental_leave_weeks_source": null, "non_birth_parent_leave_weeks_source": null, "parental_leave_source_url": null, "pto_days": null, "unlimited_pto": false, "sabbatical_eligible": false, "family_friendly_score": 51, "benefit_verified": false, "benefit_last_verified": null, "hire_states_allowed": [], "state_eligibility_source": null, "state_eligibility_enriched_at": null, "llm_quality_pass_at": null, "llm_signals_at": null, "llm_extraction_run_id": null, "llm_extraction_extracted_at": null, "llm_extraction_field_sources": {}, "seniority": "mid", "seniority_source": null, "years_experience_min": 5, "years_experience_max": 7, "role_function": "teaching_education", "role_function_source": null, "company_stage": null, "company_stage_source": null, "employer_industry": null, "employer_industry_source": null, "employer_size": "51-200", "quality_score": 45, "travel_pct": null, "requires_shift": null, "shift_type": "unknown", "shift_type_source": null, "weekend_work": "unknown", "weekend_work_source": null, "relocation_assistance_source": null, "contractor_w2": "unknown", "required_timezone": null, "fertility_family_building_benefits_source": null, "mental_health_support_source": null, "adoption_assistance_offered_source": null, "childcare_subsidy_source": null, "learning_budget_offered_source": null, "surrogacy_assistance_offered_source": null, "cover_letter_required": null, "cover_letter_required_source": null, "assessment_required": null, "assessment_required_source": null, "application_deadline": null, "application_deadline_source": null, "visa_sponsorship": false, "us_citizenship_required": false, "security_clearance": "none", "education_required": "none", "roll_up_count": null, "roll_up_total_locations": null, "explanations": [], "parental_leave_source_label": null, "k401_match_source_label": null, "k401_contribution_source_label": null, "apply_url_checked_at": null, "apply_url_verification_status": "not_reachable_or_not_checked", "apply_url_verification_label": "Not checked or not reachable at last crawl", "field_source_signals": { "remote_status": { "tier": "inferred", "verified": false, "label": "Inferred - source not recorded", "source_label": "source not recorded", "href": null, "source_values": [], "checked_at": null }, "equity_included": { "tier": "inferred", "verified": false, "label": "Inferred - source not recorded", "source_label": "source not recorded", "href": null, "source_values": [], "checked_at": null }, "seniority": { "tier": "inferred", "verified": false, "label": "Inferred - source not recorded", "source_label": "source not recorded", "href": null, "source_values": [], "checked_at": null }, "role_function": { "tier": "inferred", "verified": false, "label": "Inferred - source not recorded", "source_label": "source not recorded", "href": null, "source_values": [], "checked_at": null } } }, { "id": "520993933a403fa73bec5b2abe2cc8f3", "title": "Founder's Office", "employer_name": "Kastle", "employer_slug": "kastle", "location_text": "San Francisco | OnSite", "country": "US", "employment_type": "unknown", "remote_status": "onsite", "remote_status_source": null, "remote_status_enriched_at": null, "days_in_office": 5, "timezone_overlap_hours": 6, "salary_min": null, "salary_max": null, "salary_min_source": null, "salary_max_source": null, "salary_currency": "UNSPECIFIED", "salary_type": "unknown", "salary_type_source": null, "salary_type_enriched_at": null, "salary_period": null, "base_salary_min": null, "base_salary_max": null, "salary_disclosed": false, "equity_included": false, "equity_included_source": null, "equity_type": [ "none" ], "k401_match": null, "match_401k_pct": null, "match_401k_pct_source": null, "k401_match_source_url": null, "k401_match_source_fields": [], "k401_contribution_source_url": null, "k401_contribution_source_fields": [], "profit_sharing": false, "bonus_offered": false, "mental_health_support": null, "childcare_subsidy": null, "fertility_family_building_benefits": null, "adoption_assistance_offered": null, "surrogacy_assistance_offered": null, "learning_budget_offered": null, "relocation_assistance": null, "top_startup_sources": [ "yc" ], "posted_at": "2026-06-10T03:52:15.000Z", "apply_url": "https://jobs.ashbyhq.com/kastle/c5c00613-dba1-4683-9c26-869b95b96aff", "apply_url_verified": false, "ats": "ashby", "url_last_checked_alive": null, "removed_at": null, "description_excerpt": "Founder's Office San Francisco | OnSite ABOUT KASTLE Kastle is building AI operating system for consumer lending, starting with mortgage. We work with some of America's largest mortgage lenders, helping them scale their contact center and compliance operations using AI-driven voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we are redefining lending with AI. ABOUT THE ROLE You'll sit in the Founder's Office and act as force-multiplier to the CEO and leadership team. This is not a coordination role - this is an execution role. You'll take ambiguous, cross-functional problems (GTM, product ops, customer delivery, hiring, internal cadence) and drive them to crisp plans, clear owners, and shipped outcomes. WHAT YOU'LL DO CEO & FOUNDER ENABLEMENT - Own the CEO's operating cadence: weekly priorities, KR tracking, meeting hygiene, decision logs, follow-ups. - Turn leadership conversations into action: write crisp memos, capture decisions, assign owners, drive closure. - Prepare internal and external meetings: briefs, stakeholder maps, agendas, talking points, post-meeting execution. STRATEGIC & CROSS-FUNCTIONAL EXECUTION - Run special projects across Product, Engineering, Sales, and Customer Success - often simultaneously. - Build lightweight systems: dashboards, templates, playbooks, and operating routines that scale. - Drive 0→1 initiatives: customer onboarding plans, KPI frameworks, pricing analyses, process redesigns. 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We partner with some of America's largest mortgage lenders to transform their contact centers and compliance operations with AI voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we're redefining how millions of borrowers interact with financial institutions. This is a rare chance to join at the ground floor of a company already plugged into large-scale customers and real production use cases. ABOUT THE ROLE We're looking for a Enterprise Account Executive who can take Kastle's story into the boardrooms of the most complex financial institutions in the country and turn conversations into live deployments. This role requires a strategic mindset, a consultative approach, and the ability to navigate complex enterprise sales cycles. You'll be instrumental in introducing our cutting-edge AI agents across the operations of the largest banks and lenders in the country. As you succeed in the role, you'll be responsible for building out a world-class GTM team to help Kastle dominate consumer lending across North America. Location preference: San Francisco, CA. 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As an intern, this will be the most intense, competitive, and transformative experience of your life. You'll work directly with the founders and a small team of exceptionally smart, driven peers who are building the operating system for consumer lending. You will: - Ship real products. - Touch every part of the business from customer support, growth, operations, engineering, and sales. - Work directly with founders and unblock them - Handle the hardest, most boring, least glamorous tasks - without flinching. - Operate with extreme autonomy in an unstructured, high-paced environment. - Take vague prompts like “build something that helps the company grow” and turn them into working systems - on your own, or by rallying others to help. Ideal candidate: - Relentlessly resourceful - Learns fast, moves faster - Cares about quality - Very Technical - Can start next week If that's you, email us: founders at kastle dot ai. Just tell us why you're a fit and add “Founder Intern” in subject. Keep it short. We'll know. ABOUT KASTLE Kastle is automating manual workflows for the financial services industry using AI agents. 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Forward Deployed Engineer at Kastle - San Francisco | OnSite - Forward Deployed Engineer San Francisco | OnSite ABOUT KASTLE Kastle is building AI operating system for consumer lending, starting with mortgage. We work with some of America's largest mortgage lenders, helping them scale their contact center and compliance operations using AI-driven voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we are redefining lending with AI. ABOUT THE ROLE As a Forward Deployed Engineer, you'll be the technical owner and project leader of our most important accounts. You'll embed deeply with customers, translate business workflows into production grade AI agents, and manage the customer relationship and roadmap. RESPONSIBILITIES - Build, configure, and launch AI agents on Kastle's platform to handle real borrower workflows - Write production-grade backend and full-stack code (Python, Java, TypeScript) to integrate with loan servicing systems, data sources, and telephony platforms. - Own the full agent development life cycle: prototype quickly, set up CI/CD, monitor live usage, iterate to targets, and document best practices to speed up future projects. - Scope ambiguous customer asks, prototype quickly, and iterate into stable deployments. - Act as the technical face of Kastle in key accounts, building trust through speed, empathy, and impact. - Feed customer learnings back into the core product, influencing roadmap and reusable tooling. WHAT WE'RE LOOKING FOR - At-least 1 year of engineering experience, and 1 year of customer facing experience. - Proficiency in Python, Java, or similar; comfortable building APIs and backend systems. - Bias toward outcomes: you care more

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Kastle", "value": "fe5c5a410b5fffe6883a23459fb72874" }, "hiringOrganization": { "@type": "Organization", "name": "Kastle" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 12 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/kastle/forward-deployed-engineer-fe5c5a41" } }, { "@type": "ListItem", "position": 2, "url": "https://fewerjobs.com/jobs/kastle/staff-ai-engineer-e9f888a0", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "Staff AI Engineer", "description": "

Staff AI Engineer at Kastle - San Francisco | OnSite - Staff AI Engineer San Francisco | OnSite ABOUT KASTLE Kastle is building AI operating system for consumer lending, starting with mortgage. We work with some of America's largest mortgage lenders, helping them scale their contact center and compliance operations using AI-driven voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we are redefining lending with AI. ABOUT THE ROLE As a Founding Applied AI Engineer, you'll be instrumental in building the technical foundation of Kastle's AI platform. You'll fine-tune large language models, design AI workflows for highly regulated enterprises, and ensure our voice agents deliver precise, compliant, and effective borrower interactions. This role is ideal for an engineer who is passionate about applied AI, eager to solve real-world challenges, and excited to build the technical foundation of an early-stage AI startup. WHAT YOU'LL DO - AI Model Integration: Fine-tune and deploy LLMs for real-time voice-based borrower interactions - Prompt Engineering: Design and iterate on prompt strategies to optimize AI performance and compliance - Evaluate LLMs and AI Agents: Build high quality evals using our proprietary datasets to benchmark AI agent performance and run experiments - Custom AI Solutions: Train and implement domain-specific AI models for consumer lending - Scalability & Compliance: Ensure AI solutions meet regulatory standards (FDCPA, RESPA, TILA) and scale efficiently - Data Pipelines & APIs: Build robust AI-driven workflows that integrate seamlessly with loan servicing platforms - Continuous Optimization: Monitor performance metrics and continuously improve agent quality and borrower experience WHAT

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Kastle", "value": "e9f888a01ecf565243e6062cb5bc5475" }, "hiringOrganization": { "@type": "Organization", "name": "Kastle" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 36 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/kastle/staff-ai-engineer-e9f888a0" } }, { "@type": "ListItem", "position": 3, "url": "https://fewerjobs.com/jobs/kastle/founding-engineer-71e974cd", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "Founding Engineer", "description": "

Founding Engineer at Kastle - San Francisco | OnSite - Founding Engineer San Francisco | OnSite ABOUT KASTLE Kastle is building the AI operating system for consumer lending. We partner with some of America's largest mortgage lenders to transform their contact centers and compliance operations with AI voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we're redefining how millions of borrowers interact with financial institutions and how lenders operate at scale. This is a rare chance to join at the ground floor of a company already plugged into large-scale customers and real production use cases. WHAT YOU'LL DO - Architect and own core systems that power real-time AI voice and compliance workflows - Push performance boundaries, delivering sub-700ms latency leveraging event driven architecture and parallel processing - Deploy, operate, scale, resilient systems using Kubernetes and distributed sub-systems - Build a self-improving AI system that improves with every customer interaction and human feedback - Ship fast, ship right from whiteboard design to live production in bank environments. WHY JOIN KASTLE? - Build what banks run on: Your code won't sit in a sandbox, it'll power real borrower interactions at scale. - Act like a founder: High ownership, autonomy, and input on product, tech, and culture. - Learn fast: Daily exposure to customers and their feedback loops. - Strong upside: Competitive salary, meaningful early-stage equity, and a front-row seat to building a category-defining company. - Great team: Work side-by-side with a world-class founding team from Verkada, NVIDIA, Apple, and Redfin. WHAT YOU BRING - Strong

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Kastle", "value": "71e974cd7eebe18bb5157653918fb1c5" }, "hiringOrganization": { "@type": "Organization", "name": "Kastle" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "incentiveCompensation": "Equity (Options)", "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 36 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/kastle/founding-engineer-71e974cd" } }, { "@type": "ListItem", "position": 4, "url": "https://fewerjobs.com/jobs/kastle/agent-product-manager-6a2f36f8", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "Agent Product Manager", "description": "

Agent Product Manager at Kastle - San Francisco | OnSite - Agent Product Manager San Francisco | OnSite ABOUT KASTLE Kastle is building AI operating system for consumer lending, starting with mortgage. We work with some of America's largest mortgage lenders, helping them scale their contact center and compliance operations using AI-driven voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we are redefining lending with AI. ABOUT THE ROLE You're joining at an inflection point. Our usage has grown 40x in the last 6 months and our Agent Product and Success team is a high impact group that shapes how customers use and gain value from our product. You will partner closely with customers to guide deployments, support adoption and ensure they have the tools and insight they need to achieve meaningful outcomes. You will work cross functionally with Engineering and Sales to surface customer needs, solve challenges and help shape how our technology performs in real world environments. This role blends relationship management with hands on execution and is ideal for someone who thrives in a fast paced setting and wants to have a direct impact at a high growth company. WHAT YOU'LL DO - Own deployments end-to-end: scope requirements, customize agents, define success metrics, manage the roadmap, and drive customers from signed contract through full production adoption - Serve as a strategic thought partner to C-suite and senior executives at major servicers and banks - shaping AI roadmaps, leading steering forums, and driving the decisions that determine how AI gets deployed across

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "CONTRACTOR", "identifier": { "@type": "PropertyValue", "name": "Kastle", "value": "6a2f36f8a72c4e5865b2191a74b75fed" }, "hiringOrganization": { "@type": "Organization", "name": "Kastle" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 60 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/kastle/agent-product-manager-6a2f36f8" } }, { "@type": "ListItem", "position": 5, "url": "https://fewerjobs.com/jobs/kastle/ai-trainer-part-time-62523821", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "AI Trainer (Part-time)", "description": "

AI Trainer (Part-time) at Kastle - Remote - AI Trainer (Part-time) Remote ABOUT KASTLE Kastle is building the AI operating system for consumer lending. We partner with some of America's largest mortgage lenders to transform their contact centers and compliance operations with AI voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we're redefining how millions of borrowers interact with financial institutions. This is a rare chance to join at the ground floor of a company already plugged into large-scale customers and real production use cases. ROLE OVERVIEW We are looking for a part-time AI Trainer with experience operating phones in the mortgage industry. You will help improve our AI system by providing feedback on conversations, annotating data, and testing for quality. If you have worked as a customer service or collections agent for a mortgage servicer, this role is a great fit to use your knowledge to train AI in real-world scenarios. RESPONSIBILITIES - Annotate and label data from mortgage-related conversations. - Give feedback on AI responses to make them more accurate and helpful. - Train the AI system to handle mortgage servicing phone calls better. - Test the AI for issues, including response quality, customer experience, explanation quality, and realism. - Work ~10 hours per week on flexible schedules. REQUIREMENTS - 5+ years a customer service agent for a mortgage servicing company. - Knowledge of the mortgage industry, including escrow, payment questions, loss mitigation calls, QRPC requirements, servicing transfer questions, and customer conversations. - Strong attention to detail and communication

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "PART_TIME", "identifier": { "@type": "PropertyValue", "name": "Kastle", "value": "62523821f72e8741a1452afda05bcacf" }, "hiringOrganization": { "@type": "Organization", "name": "Kastle" }, "jobLocationType": "TELECOMMUTE", "applicantLocationRequirements": { "@type": "Country", "name": "UNKNOWN" }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 60 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/kastle/ai-trainer-part-time-62523821" } }, { "@type": "ListItem", "position": 6, "url": "https://fewerjobs.com/jobs/kastle/founder-s-office-52099393", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "Founder's Office", "description": "

Founder's Office at Kastle - San Francisco | OnSite - Founder's Office San Francisco | OnSite ABOUT KASTLE Kastle is building AI operating system for consumer lending, starting with mortgage. We work with some of America's largest mortgage lenders, helping them scale their contact center and compliance operations using AI-driven voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we are redefining lending with AI. ABOUT THE ROLE You'll sit in the Founder's Office and act as force-multiplier to the CEO and leadership team. This is not a coordination role - this is an execution role. You'll take ambiguous, cross-functional problems (GTM, product ops, customer delivery, hiring, internal cadence) and drive them to crisp plans, clear owners, and shipped outcomes. WHAT YOU'LL DO CEO & FOUNDER ENABLEMENT - Own the CEO's operating cadence: weekly priorities, KR tracking, meeting hygiene, decision logs, follow-ups. - Turn leadership conversations into action: write crisp memos, capture decisions, assign owners, drive closure. - Prepare internal and external meetings: briefs, stakeholder maps, agendas, talking points, post-meeting execution. STRATEGIC & CROSS-FUNCTIONAL EXECUTION - Run special projects across Product, Engineering, Sales, and Customer Success - often simultaneously. - Build lightweight systems: dashboards, templates, playbooks, and operating routines that scale. - Drive 0→1 initiatives: customer onboarding plans, KPI frameworks, pricing analyses, process redesigns. GTM & CUSTOMER DELIVERY OPS - Support enterprise deal execution: proposal/SOW hygiene, pricing models, redline coordination, mutual action plans. - Create customer-ready artifacts: exec updates, ROI/KPI reporting, launch comms, rollout plans. - Own the details on high-stakes timelines: dependencies, risk

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Kastle", "value": "520993933a403fa73bec5b2abe2cc8f3" }, "hiringOrganization": { "@type": "Organization", "name": "Kastle" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 36 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/kastle/founder-s-office-52099393" } }, { "@type": "ListItem", "position": 7, "url": "https://fewerjobs.com/jobs/kastle/enterprise-account-executive-3f01c30f", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "Enterprise Account Executive", "description": "

Enterprise Account Executive at Kastle - San Francisco | OnSite - Enterprise Account Executive San Francisco | OnSite ABOUT KASTLE Kastle is building the AI operating system for consumer lending. We partner with some of America's largest mortgage lenders to transform their contact centers and compliance operations with AI voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we're redefining how millions of borrowers interact with financial institutions. This is a rare chance to join at the ground floor of a company already plugged into large-scale customers and real production use cases. ABOUT THE ROLE We're looking for a Enterprise Account Executive who can take Kastle's story into the boardrooms of the most complex financial institutions in the country and turn conversations into live deployments. This role requires a strategic mindset, a consultative approach, and the ability to navigate complex enterprise sales cycles. You'll be instrumental in introducing our cutting-edge AI agents across the operations of the largest banks and lenders in the country. As you succeed in the role, you'll be responsible for building out a world-class GTM team to help Kastle dominate consumer lending across North America. Location preference: San Francisco, CA. WHAT YOU'LL DO - Develop and execute strategic sales plans to penetrate key accounts in mortgage lending, servicing, and consumer banking. - Shape, execute, and win RFPs to deploy AI Agents across a lender's operations. - Navigate challenging, multi-stakeholder sales processes (C-suite, InfoSec, legal, and procurement) within large enterprise organizations - Forecast sales activities and revenue achievements - Generate and qualify

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Kastle", "value": "3f01c30f685035e94055687eedaab34a" }, "hiringOrganization": { "@type": "Organization", "name": "Kastle" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 60 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/kastle/enterprise-account-executive-3f01c30f" } }, { "@type": "ListItem", "position": 8, "url": "https://fewerjobs.com/jobs/kastle/founder-intern-now-and-summer-2026-347c53ae", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "Founder Intern (now and Summer 2026)", "description": "

Founder Intern (now and Summer 2026) at Kastle - San Francisco | OnSite - Founder Intern (now and Summer 2026) San Francisco | OnSite ABOUT THE ROLE We're looking for an intern to start asap, in person in San Francisco. As an intern, this will be the most intense, competitive, and transformative experience of your life. You'll work directly with the founders and a small team of exceptionally smart, driven peers who are building the operating system for consumer lending. You will: - Ship real products. - Touch every part of the business from customer support, growth, operations, engineering, and sales. - Work directly with founders and unblock them - Handle the hardest, most boring, least glamorous tasks - without flinching. - Operate with extreme autonomy in an unstructured, high-paced environment. - Take vague prompts like “build something that helps the company grow” and turn them into working systems - on your own, or by rallying others to help. Ideal candidate: - Relentlessly resourceful - Learns fast, moves faster - Cares about quality - Very Technical - Can start next week If that's you, email us: founders at kastle dot ai. Just tell us why you're a fit and add “Founder Intern” in subject. Keep it short. We'll know. ABOUT KASTLE Kastle is automating manual workflows for the financial services industry using AI agents. We work with the largest mortgage lenders in America and are hiring!

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