Staff Software Engineer - UI Foundations

About the role

Join Amplitude's UI Foundations team to architect the frontend platform that powers product engineering at scale, with a focus on performance, developer experience, and AI-driven automation.

Responsibilities

• Frontend architecture: Own and evolve the architectural foundations of our frontend platform — module boundaries, micro-frontend patterns, shared component/design-system infrastructure, and state management strategy.
• Application performance: Diagnose and fix systemic performance issues (bundle size, load time, runtime performance, rendering bottlenecks); establish performance budgets and guardrails that scale across teams.
• Developer experience & tooling: Build and maintain the build systems, local dev environments, CI/CD pipelines, linting/codegen, and internal tooling that other engineers depend on daily.
• Software factory / agentic workflows: Continuously identify the biggest bottleneck in the engineering workflow and build AI-agent-driven automation to remove it, then move to the next one.
• Technical leadership: Set technical direction and standards for the frontend org; mentor senior/staff-track engineers; review architecture proposals from other teams that touch shared frontend infrastructure.
• Cross-functional partnership: Work closely with product engineering teams, design systems, and platform/infra teams to make sure foundational investments actually solve real product-team pain points.

Eligibility

• Real world software engineering experience, with a track record operating at Staff level or equivalent scope/impact.
• Deep expertise in modern frontend architecture (React or equivalent component frameworks) combined with strong infrastructure/systems engineering instincts — you're as comfortable in build tooling, CI/CD, and dev environments as you are in application code.
• Demonstrated experience improving frontend application performance at scale (bundle optimization, rendering performance, load-time metrics).
• Experience designing and shipping internal developer tooling or platform infrastructure that measurably improved developer velocity.
• Hands-on experience with AI-agent-driven or LLM-powered engineering workflows (agentic coding tools, autonomous pipelines, AI-assisted codegen/migration) — or a clear point of view on how to build them.

Skills

• React
• TypeScript

Benefits

• Excellent ​M​edical, ​D​ental and ​V​ision insurance coverages, with 100% employer-paid premiums for employee ​M​edical, ​D​ental,​ ​​​​​​​​Vision on select plans
• Flexible time off, ​p​aid holidays, and more
• Generous stipends to spend on what matters most to you, whether that’s wellness (monthly), commuter transit/parking (monthly), learning and development (quarterly), home office equipment (annual), and much more
• Excellent Parental benefits including​:​ 12-20 weeks of Paid Parental Leave, Carrot Fertility Benefits/Adoption/Surrogacy support, Back-up Child Care support
• Mental health and wellness benefits including no cost employee access to Modern Health coaching & therapy Sessions and high quality physician office experience via One Medical membership (select U.S. locations only)
• Employee Stock Purchase Program​ (ESPP)​