Senior Frontend Engineer
First seen by Alion on Oct 13, 2026.
We’re looking for a senior-level React engineer to own critical frontend experiences, collaborate closely with product/design.
What you’ll do
Design, build, and ship high-performance, responsive web UIs
Partner with product managers, designers, and analysts to translate user needs into elegant product experiences
Plan and execute short- and long-term roadmaps balancing user impact, technical quality, and delivery speed
Raise the bar through code reviews, mentoring, and improvements to our tooling and processes
Must-have expertise
Next.js (our web app is built with Next.js)
Monorepos using Yarn Workspaces or Nx
Tailwind CSS (our primary design system)
Technical requirements
5+ years of professional software development experience
5+ years with React and its ecosystem (e.g., Redux, React Router)
Strong proficiency in JavaScript (ES6/ES7) and TypeScript
Deep knowledge of HTML/CSS, responsive design, and accessibility (a11y) best practices
Hands-on with modern build tooling and package managers (Vite, esbuild, Yarn)
Experience with server-side rendering and Next.js, plus working knowledge of Node.js
Comfortable with Git workflows and agile methodologies
3+ years working with major cloud providers (AWS/GCP/Azure)
Storybook
Nice to have
Experience with monorepo release management and internal package versioning
Familiarity with performance profiling, Web Vitals, and SEO in Next.js
E2E testing (Playwright/Cypress) and CI/CD pipelines
Experience in fintech or data-heavy, real-time UIs