Senior Frontend Engineer

Benefits

Parental leave

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Non-birth-parent leave

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Family-building benefits

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• Adoption assistance: Not verified
• Surrogacy assistance: Not verified

Mental health support

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Relocation assistance

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Childcare support

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Learning budget

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Verification

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Salary

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401(k) match

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Market context

U.S. role benchmark (BLS OEWS)

$116,543 U.S. median for this role

Projected growth (BLS Employment Projections)

+9.8% - Much faster than average

Matched to SOC 15-1252 - Software Engineering aggregate by role bucket.

Source: U.S. Bureau of Labor Statistics, OEWS, May 2024 and Employment Projections, 2024-2034.

Role

Role function

Engineering From the posting source checked Jun 20, 2026

Seniority

Senior From the posting source checked Jun 20, 2026

Work mode

Onsite From the posting source checked Jun 20, 2026

In-office days

5 days From the posting source checked Jun 20, 2026

Schedule

Shift type

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Weekend work

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Application

Cover letter

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Assessment

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Deadline

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Where they hire

State eligibility is not yet verified.

About this role

Senior Frontend Engineer San Francisco | OnSite We're building a gamified developer platform empowering tens of thousands of coders to compete in exciting software engineering challenges - all while pushing the frontier of LLMs! As a Senior Frontend Engineer, you'll become part of a passionate, fast moving team dedicated to solving challenging technical problems, designing engaging gamification experiences, and shaping the foundations to support the collective effort of developers worldwide. WHAT YOU'LL DO - Design and implement intuitive, attractive, and engaging user interfaces that captivate developers - Collaborate closely with product managers, designers, and backend engineers to build seamless gamified experiences and interactive coding challenges - Architect scalable frontend solutions, ensuring maintainability, performance, and reliability as our platform rapidly grows - Drive frontend best practices, code quality, and mentorship within the engineering team - Continuously experiment, iterate, and optimize user experiences based on data-driven insights and user feedback WHAT YOU HAVE - 3+ years of experience building scalable, performant frontend applications using React and TypeScript - Strong proficiency in styling responsive, attractive user interfaces with Tailwind CSS - Solid understanding of data fetching, state management, and API integration using GraphQL - Proven ability to architect maintainable, modular frontend codebases and establish best practices - Experience building and maintaining reusable component libraries and frontend design systems - Familiarity with frontend testing frameworks and best practices (e.g., Vitest, React Testing Library, MSW) - Passion for crafting delightful user experiences and attention to detail in UI/UX design - A proactive mindset, iterating quickly

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