Top Senior Front End Developer Jobs in Pittsburgh, PA

Develop and maintain web application user interfaces using Vaadin and front-end technologies. Apply UI fundamentals (including Fitts' law), refactor enterprise applications, collaborate with clients, and mentor/train other front-end developers.

Lead frontend platform architecture across web and mobile: design and evolve design systems, component libraries, build tooling, accessibility, internationalization, and developer experience. Partner with backend teams on GraphQL/Python, maintain security and compliance, mentor engineers, drive cross-team initiatives, and deliver scalable, high-quality frontend foundations used by multiple product teams.

Build and maintain scalable, high-performance web applications and data-visualization platforms using React, Redux, Vite, and TypeScript. Collaborate with cross-functional teams to design features, write clean code and tests, debug, contribute to APIs, mentor junior engineers, and apply modern development practices including CI/CD and accessibility considerations.

Join a product team to build and maintain large-scale frontend platforms. Lead frontend architecture, implement features using TypeScript, Lit, and Redux, write Jasmine tests, ensure WCAG accessibility, own technical delivery, mentor mid-level engineers, and collaborate with clients, designers, and cross-functional teams to drive stability and scalability.

The role involves modernizing the front end stack, migrating to a monorepo architecture, developing component libraries, and improving cross-platform mobile applications while collaborating with product and design teams.

Founding-team senior engineer to architect and build core platform components. Work with CEO/CTO to develop scalable distributed backend systems and frontend using React, Node.js and TypeScript. Implement solid coding practices, testing, CI/CD, and agile workflows while iterating rapidly in an early-stage fintech startup.

Lead frontend development of production web applications using Svelte and other frameworks. Build reusable components, integrate REST/GraphQL APIs, ensure UI/UX quality, accessibility, and performance. Lead a small team, coordinate releases with QA, write tests, follow Git and CI/CD workflows, and collaborate remotely with stakeholders across the US.

The Senior Software Engineer will lead frontend development using React for Afresh's AI grocery platform, mentoring engineers and collaborating across teams to enhance web solutions.

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.

The Senior Frontend Engineer will build and enhance core product experiences using Angular 2+ and React, ensuring high-quality code and collaboration with other teams.

As a Senior Frontend Software Engineer, you'll lead the development of major features using React and TypeScript, ensuring performance and integration with backend systems. You'll also manage releases, improve team efficiency, and contribute to a customer-centric product experience.

Design and implement front-end features, build high-quality user interfaces, take ownership of product and architecture decisions, collaborate with engineering team, and deliver performant, user-focused solutions.

Design, implement, and maintain frontend applications and internal tools. Own delivery of high-visibility features, collaborate with cross-functional teams, mentor peers, and ensure performant, accessible, polished user interfaces integrated with backend systems.

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.

We are seeking a Senior Frontend Software Engineer to build advanced web applications using JavaScript and ReactJS, collaborating with a team to enhance user experiences.

The Senior Full Stack JavaScript Developer will build and maintain user interfaces using React and Next.js, integrate with Node.js backends, and guide other developers. Responsibilities include ensuring accessibility, performance, and reliability of features, engaging in code reviews, and collaborating closely with product teams.

Develop crafted, intuitive interfaces, improve UI/UX quality, and collaborate with product teams. Engage with customers for feedback and mentor future engineers.

Responsible for defining, designing, and developing major web product features, leading AI-driven workflows, ensuring code quality, and mentoring team members.

Develop and maintain WordPress websites, create custom themes and plugins, ensure cross-browser compatibility, and optimize for SEO. Provide guidance on user experience and explore new technologies.

The Senior Software Engineer will enhance user experiences in crypto wallets, focusing on collaboration, performance, and delivering quality products.

Develop user-centric UI applications, collaborate with teams, and design scalable solutions while enhancing production-ready code as a Frontend Engineer.

The Senior Front-End Engineer will solve complex architecture problems, develop features using Vue, optimize performance, and collaborate with cross-functional teams.

As a Senior Frontend Engineer, you will design and build web applications, owning major UI projects, collaborating with cross-functional teams, and optimizing performance for a seamless user experience.

Design and implement scalable frontend solutions using JavaScript/TypeScript and React. Drive architecture discussions, ship features with minimal guidance, maintain code quality and styling standards, collaborate across agile teams, ensure performance and scalability, and manage end-to-end feature lifecycles in a fast-moving environment.

Build and maintain fast, intuitive frontend applications for blockchain and Web3 products. Collaborate with product, design, and engineering teams; develop reusable components and frontend architecture; integrate wallets and smart-contract interactions; improve performance, reliability, and accessibility; participate in technical planning and code reviews; mentor other developers and establish frontend best practices.