Sr. React.js Developer  

Role: Sr. React.js Developer                                                                              

Location: Minneapolis

Duration: 12 months

Key responsibilities

• Lead design and implementation of large-scale React applications and frontend architecture (component libraries, state management, routing, SSR/CSR strategies).
• Define and enforce frontend standards: component patterns, accessibility (WCAG), performance budgets, and testing strategy.
• Build and evolve a shared component library (Storybook) and design system for reuse across products.
• Drive decisions on frameworks/tools (React, TypeScript, Next.js/Remix/Gatsby, Redux/RTK/React Query, Vite/Webpack) and integrate them into CI/CD pipelines.
• Optimize client performance (code-splitting, lazy loading, tree shaking, bundle analysis, critical rendering path).
• Implement robust testing (unit, integration, E2E) and observability for frontend (RUM, synthetic monitoring).
• Mentor senior and mid-level frontend engineers; run code reviews and architecture sessions; grow the frontend discipline.
• Collaborate with backend/platform teams to design APIs (REST/GraphQL) and ensure secure, resilient integrations.
• Own release quality: feature flagging, canary/blue-green rollouts, rollback plans and performance gating.
• Participate in product discovery and translate UX requirements into scalable technical solutions.

Must-have skills & experience

• 12+ years professional software engineering; significant portion working primarily on front-end web apps.
• 6+ years hands-on experience building complex React applications in production.
• Deep mastery of React (hooks, concurrent patterns, Suspense) and TypeScript.
• Strong experience with server-side rendering / hybrid frameworks (Next.js or equivalent) and static generation patterns.
• Proven track record building and maintaining component libraries and design systems (Storybook, BEM/Atomic design).
• Expertise in state management approaches (Redux/RTK, MobX, Recoil, Zustand, React Query) and when to apply each.
• Solid knowledge of modern build tools (Vite, Webpack, Rollup), bundling strategies and performance tuning.
• Experience with testing frameworks: Jest, React Testing Library, Cypress/Playwright for E2E.
• Familiar with accessibility standards (WCAG) and implementing accessible components.
• Practical experience with CI/CD (GitHub Actions, Azure DevOps, Jenkins) and release automation.
• Strong debugging skills across browser, Node, and mobile web; familiarity with browser performance tools and monitoring (Lighthouse, Sentry, Datadog RUM).
• Excellent communication, mentoring, and stakeholder management skills.

Nice-to-have

• Experience with micro-frontend architectures (Module Federation, Web Components, single-spa).
• Familiarity with GraphQL (Apollo/Relay) and schema design.
• Prior role owning frontend architecture or leading a frontend engineering guild.
• Experience integrating frontends with mobile/web hybrid apps or Electron.
• Knowledge of cloud/CDN optimizations (Edge caching, CloudFront, Fastly) and image optimization strategies.
• Background in product-driven companies and direct collaboration with designers (Figma workflow).

Regards,

Manoj

Derex Technologies INC

Contact : 973-834-5005 Ext 206

Additional Information

All your information will be kept confidential according to EEO guidelines.

About the Company

Derex Technologies Inc specializes in providing IT consulting, staffing solutions and software services. Globally headquartered in Harrison New Jersey since 1996 Derex delivers the highest quality technology professionals and an array of customized IT talent solutions designed to improve productivity and drive results to global clients throughout North America.

With over two decades of unparalleled experience, Derex provides supports to its clientele, across such industries as Systems Integration, Banking and Finance, Telecommunications, Pharmaceutical and Life Sciences, Energy, Healthcare, Technology, Transportation, and local and federal Government agencies.