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Senior Frontend Engineer - AI Product

External
rebuildmanufacturing logoRebuildmanufacturing · Greater Boston, MA
$165K–$215K/yrFull-timeOn-site2mo ago
CSSCypressDesign SystemsJavaScriptJWTOpenAPI
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About the role

If you've worked alongside hardware teams, you know the damage that results from a missed change request or critical context that was never relayed to the right person. Reflow exists to close that gap. We're building the first AI-powered platform purpose-built for hardware product development, one that listens across the tools teams already use, maintains a structured picture of every program, and proactively coordinates across disciplines when things inevitably change. This is a ground-floor opportunity for a hands-on frontend engineer to shape the user experience of a high-potential product with the support of a parent company leading innovation in engineering and manufacturing. Who We're Looking For We're seeking a frontend engineer who cares deeply about building interfaces that are fast, intuitive, and delightful. The ideal candidate has shipped production React applications and has strong opinions on component architecture and design systems. You should already be using AI coding tools like Cursor, Copilot, or Claude to accelerate your work, with excitement about building the product that finally replaces the spreadsheets and status meetings that hardware teams have been stuck with for decades. This senior engineer will work alongside our engineering team and head of product to build the interfaces through which users manage structured engineering artifacts (requirements, project plans, dependencies), interact with ambient AI agents, and get real-time transparency into project health across disciplines. The role is hands-on - you will be coding daily while contributing to frontend architecture decisions and helping grow the design system as we scale.

Responsibilities

  • Your day-to-day responsibilities will include:
  • Building production-grade React applications with TypeScript
  • Developing and maintaining a shared component library
  • Building rich interfaces for structured engineering data: requirements with traceability, phase/gate tracking, dependency graphs, task boards with discipline tags, and version-controlled project plans
  • Building interfaces for AI agent interactions including streaming chat, proactive coordination alerts, and AI-generated status summaries and deliverables (proposals, SOWs, reports)
  • Implementing portfolio-level dashboards for engineering leaders and executives showing cross-project cost, schedule, and risk
  • Writing well-tested code with unit and end-to-end tests
  • Collaborating with backend engineers on API integration and client SDK usage
  • Contributing to frontend architecture decisions, code reviews, and engineering best practices
  • Technical Requirements

Requirements

  • 5+ years building production web applications, with 3+ years focused on React
  • Demonstrated proficiency using AI coding tools (Cursor, Copilot, Claude, etc.) to accelerate development
  • Expert-level expertise with React, TypeScript, and modern JavaScript
  • Strong experience with component-driven development, design systems, and tools like Storybook
  • Proficiency with CSS frameworks (Tailwind CSS preferred) and responsive design
  • Experience with modern build tools (Vite, esbuild, or similar)
  • Understanding of API integration patterns (REST, OpenAPI, generated clients)
  • Ability to balance rapid iteration with maintainable, well-tested code
  • Highly Valuable:
  • Have worked in early-stage 0 to 1 startup environments
  • Familiarity with hardware development, engineering workflows, or project management processes
  • Experience building UIs for AI/LLM-powered features (streaming responses, chat interfaces, structured AI output)
  • Familiarity with headless component libraries (Base UI, Radix, Headless UI)
  • Background in data visualization or dashboard-heavy applications
  • Understanding of authentication/authorization patterns (OIDC, JWT)
  • Experience with end-to-end testing frameworks (Playwright, Cypress)
  • Background in B2B SaaS platforms, project management tools, or technical collaboration products

Benefits

Real Impact: The opportunity to build purpose-built tooling for an entire industry that has never had itCustomer Access: Direct exposure to hundreds of real hardware projects annually through Re:Build's engineering and manufacturing companiesTechnical Growth: Hands-on work with cutting-edge AI technologies solving novel technical challengesAutonomy: Backed by Re:Build while operating with startup independenceBenefits: Full health/dental/vision, bonus program, generous 401K, paid time off, annual learning stipendEquity & Growth: Participation in Re:Build's LTIP equity program and opportunity for founder equity in potential spin-outCompensation & LocationLocation: Remote-first, with preference for candidates in Boston, Seattle, Los Angeles, or other cities with Re:Build officesCompensation: Base salary range of $165,000 to $215,000 with performance bonus and long-term incentive plan offered. Potential equity stake under independent spinoutHealth insuranceDental insuranceVision insurance401(k)Remote work optionsEquity / stock optionsPerformance bonus

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