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Full-Stack Senior Software Engineer

Amplitude - San Francisco, CA, USA - In-office - posted 2026-09-11

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Salary: USD 183,000 - 276,000 / annual

Amplitude is a leading AI analytics platform serving over 4,700 customers including Atlassian, Burger King, NBCUniversal, and Square. The Statsig team within Amplitude is building a fast-growing feature experimentation and decision-making platform that sits at the intersection of product, data, and decision-making. In this role, you will operate as an owner, shaping both product and technical direction of a system used by sophisticated product teams worldwide. This is not a ticket-driven role—you'll drive product direction in partnership with design and product leaders while building and evolving systems that scale with customer growth. Key responsibilities include: - Own critical product surfaces end-to-end from ideation to production and beyond - Drive product direction in partnership with design and product leaders - Build and evolve systems across React and Node.js that scale with customer growth - Leverage modern AI tooling to accelerate development, prototyping, and iteration cycles - Raise the bar for engineering quality across code, architecture, and user experience - Lead by example through hands-on development, technical mentorship, and thoughtful decision-making - Move fast on ambiguous problems, turning ideas into shipped, customer-facing value You'll work across the full stack using NextJS and Node.js to build intuitive, high-performance experiences that make experimentation accessible, powerful, and trustworthy. REQUIREMENTS: - 5+ years of software engineering experience - B.S. in Computer Science or equivalent technical field - Proven experience operating at senior-level scope; you've led large, ambiguous initiatives with significant business impact - Strong full-stack expertise (React + backend systems such as Node.js and/or Python) - Deep sense of ownership—you don't wait for direction; you create it - Exceptional product taste—you care deeply about UX, details, and building things people love - AI-native mindset—you actively use and experiment with latest AI tools to amplify impact - Ability to balance speed and quality in a high-velocity environment - Strong judgment in technical trade-offs and system design What sets you apart: You think like a product builder first, engineer second. You're constantly reinventing how you work using cutting-edge tools and workflows. You're energized by open-ended problems with no clear "right" answer. You hold a high bar for your own work and the team. You turn ambiguity into clarity and momentum.

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