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Staff Software Engineer (Frontend / React)

First Resonance
Los Angeles, United Statesfull_timeVerifiedPosted 5 Nov 2025
💰 $200,000/yr($170,000/yr$200,000/yr)

About the role

We are seeking a Staff Frontend Engineer to be a technical leader for our product engineering team. In this role, you will take ownership of the architectural vision and technical strategy for the Ion Factory OS frontend, a platform used by cutting-edge manufacturers building the next generation of products, from electric aircraft to autonomous robotics.

As a technical leader, you will not only solve our most complex frontend challenges but also mentor a talented team of engineers, elevating the quality of our user experience and establishing the patterns that will scale our platform for years to come. This is a unique opportunity to shape a product that is critical to companies tackling society’s greatest challenges, from climate change and space exploration to autonomous transportation.

What You'll Do

  • Lead Architectural Strategy: Architect, design, and lead the implementation of a scalable, performant, and maintainable frontend for the Ion Factory OS, our core manufacturing platform.

  • Mentor and Elevate the Team: Guide and mentor engineers through complex technical challenges, insightful code reviews, and architectural discussions, fostering a culture of engineering excellence.

  • Drive Technical Decisions: Make high-impact decisions on our frontend technology stack, including state management (e.g., Apollo Client, Urql), component libraries, testing frameworks, and build pipelines.

  • Build for Scale and Performance: Architect and implement reusable, resilient React components and JavaScript libraries, optimizing them for maximum performance and real-time data updates across a multi-tenant SaaS environment.

  • Champion Best Practices: Establish and promote best practices for software architecture, testing, documentation, and operational excellence across the engineering organization.

  • Collaborate Cross-Functionally: Partner closely with product management, UX/UI design, and backend engineering to translate product specifications and complex user workflows into elegant, robust, and intuitive user-facing features.

  • Own the Technical Roadmap: Define and drive the long-term technical roadmap for the frontend, identifying opportunities for innovation, refactoring, and performance improvements to ensure our platform remains best-in-class.

What You'll Bring (Minimum Qualifications)

  • 8+ years of professional experience in frontend software development, with a proven track record of shipping complex, large-scale web applications.

  • Expert-level proficiency in modern JavaScript/TypeScript, React and related frameworks (Next.js or similar), with a deep understanding of its core principles, hooks, and ecosystem.

  • Significant experience designing, building, and consuming complex GraphQL APIs.

  • Demonstrated experience in a technical leadership or mentorship capacity, with a passion for growing the skills of fellow engineers.

  • Strong architectural skills, with experience building and maintaining scalable frontend systems in a SaaS, multi-tenant environment.

  • Proficiency with modern frontend development tools and pipelines (e.g., Webpack, Babel, NPM) and version control (Git/GitHub).

  • Experience implementing robust testing strategies across the testing pyramid (unit, integration, e2e) using frameworks like Jest or Cypress.

  • Familiarity with modern authorization mechanisms, such as JSON Web Tokens (JWT).

Bonus Points (Preferred Qualifications)

  • Experience architecting, building, and leading the adoption of a comprehensive UI design system.

  • Deep expertise with GraphQL clients such as Apollo Client or Urql.

  • Experience with advanced architectural patterns like micro-frontends.

  • Professional experience working directly with product design and UI/UX experts to help make enterprise-grade design decisions.

  • Experience with Agile development methodologies and tools.

Benefits & Perks

  • Health Insurance; medical, vision, dental, & life insurance.

  • Paid Parental Leave.

  • Employee Stock Option Plan.

  • Team outings, group lunches, open office, happy hours.

  • Paid holidays, sick days.

  • Flexible Friday and PTO.

  • 401K.

First Resonance is an equal opportunity employer dedicated to building an inclusive and diverse workforce.

First Resonance participates in E-Verify. As part of our onboarding process, a new hire's Form I-9 information will be shared with the federal government to confirm they are authorized to work in the U.S.

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Company

First Resonance

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