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Epirus Logo

Senior Software Engineer, UI

Epirus

$163,300 - $187,000
Aug 25, 2025
Torrance, CA, US
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Epirus is developing cutting-edge national security technology, including energy weapons, AI-powered sensors, and drone swarm defense. They need skilled software engineers to enhance, scale, and deploy these systems, requiring innovative solutions for novel and critical problems.

Requirements

  • 5+ years of professional front-end/UI development experience, JavaScript and TypeScript Expert
  • Mastery in building UI applications with React
  • Competence in at least one set of front-end build tools, bundling, and transpilation
  • Competence in at least one set of testing frameworks for unit, integration, and e2e testing (e.g., Jest, Playwright)
  • Mastery of CSS, SASS, and experience with Bootstrap, Tailwind, Material-UI, Shadcn
  • Experience optimizing performance for real-time React applications
  • At least 1+ years with at least one of the following: web-based 3d rendering, data visualization, mapping libraries

Responsibilities

  • Make powerful insights into our architectural decision-making, including framework trade-offs, state-management solutions, API and business layer patterns, and error-handling strategies
  • Collaborate effectively with UX/UI designers to ensure the seamless translation of design concepts into functional, user-friendly interfaces
  • Collaborate effectively with our backend teams to improve API designs
  • Integrate novel front-end tech into our stack
  • Take ownership of significant new features and plan them with meaningful technical document requirements descriptions, design wireframes, and software design diagrams
  • Optimize not just performance but developer experience, CI/CD, and testing
  • Be a force for readability and clean coding patterns in our codebase.

Other

  • Be a part of a talented team of skilled and experienced engineers and managers
  • Be part of a culture that enables ownership, values mentorship, and promotes work/life balance
  • Mentor and collaborate effectively
  • Experience with Agile/Scrum development
  • Experience working with a design/development pipeline