Top Senior Front-End Engineer Jobs in Chicago, IL

As a Senior Front-end Developer, you'll lead the development of websites, ensuring design quality and technical excellence while collaborating with designers and stakeholders to create user-friendly experiences.

Seeking a Senior Front-End Engineer with expertise in React/Next.js for rebuilding legacy components, creating reusable templates, and integrating with headless CMS APIs while maintaining high-quality code and mentoring junior developers.

Design, build, and maintain scalable frontend applications using Vue 3 and TypeScript. Own feature delivery from design through production, build reusable components and architecture, improve performance and accessibility, collaborate with backend teams on APIs, write tests, mentor engineers, and help shape frontend tooling, CI/CD, observability, and security practices.

As a Senior Engineer on the Frontend Infrastructure & Experience team at Braze, you will design and build foundational frontend systems, lead projects, improve developer experience, and create polished customer-facing product experiences.

Own and scale quality infrastructure for web engineering during the migration from a monolith to microfrontends. Build shared testing frameworks, tooling, CI/CD quality gates, and metrics; shift coverage toward unit, component, integration, and contract tests; enable AI-driven testing workflows and agent verification; mentor engineers and drive adoption of quality practices across teams.

This role involves leading web platform initiatives, mentoring senior engineers, architecting web applications, and implementing technical strategies for improved performance.

Design, develop and maintain front-end applications, resolve complex technical problems, communicate with users, and ensure software quality and delivery.

Lead front-end website development, collaborating with designers and project managers to create responsive, accessible sites using appropriate technologies.

Lead front-end web development for custom websites, collaborating with designers and project managers to create engaging and responsive designs. Ensure high performance and user experience through testing and quality assurance.

The Senior Frontend Engineer will develop user-friendly and scalable components for a data labeling platform, collaborating with teams and mentoring junior engineers.

Lead frontend development initiatives, ensure user experience, architect flexible solutions, mentor junior developers, and collaborate with UI/UX and backend teams.

Build and refine front-end experiences for web and mobile: onboarding, checkout, gallery features, design system and enterprise dashboard. Collaborate closely with designers and PMs, ship fast, maintain aesthetic quality, and iterate with user feedback using React, Next.js and TypeScript.

Lead architecture and implementation of Aragorn AI's frontend: build scalable React/TypeScript applications, evolve micro-frontend architecture, develop and maintain a reusable design system, optimize performance, collaborate with design and backend teams, own CI/CD for frontend, and drive frontend technical standards and documentation.

The role involves developing large-scale applications using HTML, CSS, JavaScript, and React/WordPress, code reviews, and crafting UI components while ensuring high quality and accessibility.

Responsible for designing, developing, and implementing digital solutions, conducting system testing, debugging, and collaborating with teams on technical direction.

As a Senior Frontend Engineer at Mozilla, you'll build user interfaces for Firefox, collaborate with teams, maintain code quality, and mentor peers while focusing on accessibility and usability.

The role involves building creative tools for content editing, enhancing features with PixiJS and WebGL, and improving collaboration workflows.

Own and evolve the front-end architecture for a high-throughput, real-time trading app using Next.js, React, and TypeScript. Build pixel-accurate, accessible, responsive UIs under strict performance budgets; optimize rendering, state management, data flow, and bundle size for sub-second interactions. Integrate with REST and WebSocket APIs, lead end-to-end feature development, set engineering standards, mentor engineers, and contribute across the stack when needed.

Lead development of a Shopify Headless storefront using React and TypeScript. Build pixel-perfect, accessible, performance-optimized eCommerce pages, implement Shopify Functions, integrate GraphQL APIs and third-party services, evolve a Storybook design system, and collaborate with designers, product, QA, and backend engineers to maintain best practices and documentation.

The Senior Front End Engineer will develop features for the MONOPOLY GO! Chat app, collaborate with teams, ensure app quality, and utilize AI tools for engineering tasks.

Build and maintain high-performance, accessible web applications using Next.js, React, and TypeScript. Implement responsive, pixel-perfect UI components, integrate REST/GraphQL APIs and headless CMS, optimize performance and SEO, write tests, conduct code reviews, mentor junior engineers, and collaborate in an Agile/Scrum environment.

Build and maintain high-performance Next.js/React/TypeScript web applications, implement responsive accessible UI components, integrate REST/GraphQL APIs, optimize performance (Lighthouse, Core Web Vitals), ensure cross-browser compatibility and SEO, write tests and CI/CD pipelines, contribute to design systems, conduct code reviews, and mentor junior engineers in an Agile/Scrum environment.

Build and maintain TypeScript/React frontends and SDKs for the Nomina web3 platform, create user-facing dapps, improve developer documentation and DX, and collaborate with product and engineering to deliver high-quality, mobile-friendly features.

As a Senior Frontend Engineer, you'll build the frontend Graph Semantic Layer with React and TypeScript, developing complex data visualizations and collaborating closely with design and product leadership.

As a Senior Frontend Engineer, you'll build and maintain a fraud prevention platform UI using ReactJS, collaborating with backend teams and ensuring code quality through tests and CI/CD processes.