Top Senior Front End Developer Jobs in Boston, MA

Architect and build a high-performance trading platform for active traders. Develop responsive web interfaces integrating real-time market data, low-latency execution workflows, and advanced trading tools. Collaborate with cross-functional engineering teams on large-scale initiatives, emphasizing scalability, performance, API quality, maintainability, developer experience, and end-user usability.

Develop and maintain scalable Java and Spring Boot REST services, APIs, and microservices for mission-critical geospatial systems. Support containerization, orchestration, CI/CD, DevOps automation, testing, infrastructure deployment, data platforms, and third-party integrations. Contribute to architecture, performance optimization, troubleshooting, documentation, stakeholder demos, and Agile delivery. The role requires onsite work in Herndon, Virginia and collaboration on national security missions.

Lead frontend engineering for large-scale React web applications. Architect application patterns, structure, libraries, and coding standards; build React applications end to end; conduct code reviews; mentor engineers; promote performance, scalability, and maintainability; and collaborate with designers, product managers, and technical and non-technical stakeholders.

Senior frontend-focused software engineer responsible for authentication, verification, and fraud experiences across web, mobile, and backend systems. The role owns team goals, designs and delivers highly available systems, collaborates with product and design partners, improves engineering standards, supports operations and on-call efforts, and mentors engineers. Candidates should have strong web application architecture experience, proficiency with React or Vue and JavaScript or TypeScript, and excellent communication skills.

Lead frontend architecture and implementation for an AI-driven platform: build performant, responsive React/TypeScript applications, manage complex state and real-time updates, establish component libraries, testing, CI/CD, mentor junior engineers, and drive frontend best practices and scalability.

Own the technical direction and architecture of WHOOP’s growth-focused web experiences, including join flow, checkout, and shop. Lead cross-functional projects, design A/B tests, improve performance and accessibility, integrate payment and ecommerce systems, and ensure reliability through monitoring and incident response. Mentor engineers, review technical plans and code, lead postmortems, and contribute to engineering processes and documentation.

Build and maintain performant, responsive, mobile-first web applications using Next.js, React, and Tailwind CSS. Translate product goals into polished member-facing experiences, prototype and ship features with AI-assisted workflows, integrate RESTful APIs, and collaborate with product, design, and backend teams. Establish frontend best practices for architecture, accessibility, performance, and maintainability while contributing to UX decisions and navigating ambiguous problems.

Develop and enhance LangSmith frontend features using React and TypeScript. Build reusable components, translate designs into high-quality interfaces, optimize performance across browsers and devices, and collaborate with backend, full-stack, and UX/UI teams to improve usability and product quality.

As a Frontend Software Engineer, design, develop, and deploy web applications, collaborate with UX engineers, and implement user-friendly interfaces.

Own end-to-end frontend development for core crypto payment flows across web and mobile. Improve latency, availability, and SLOs; build user-facing features (contacts, real-time transaction status); identify and fix performance bottlenecks; partner with product/design/backend; mentor junior engineers to reduce customer friction at scale.

Develop and maintain scalable frontend solutions using JavaScript, Angular, and React. Collaborate with cross-functional teams, contribute to architecture, conduct code reviews, uphold security and performance standards, and support cloud-based platforms. Diagnose technical issues, improve system reliability, mentor teammates, and promote DevOps, continuous delivery, design patterns, and software engineering best practices.

Design, build, and optimize responsive, high-performance front-end interfaces for a Web3 DEX using modern JavaScript frameworks and TypeScript. Collaborate with designers, product, and back-end teams to integrate blockchain APIs and smart contracts, mentor junior developers, troubleshoot issues, and contribute to mobile-first/PWA development while ensuring scalability and maintainability.

Lead frontend development for Coinbase identity experiences including login, signup, OAuth, account security, and multi-factor authentication. Own projects from design through deployment and monitoring, guide Native versus Webview architecture, author technical designs, resolve systemic technical debt, lead on-call and incident response, and mentor engineers.

Lead the architecture and delivery of large-scale React and React Native applications across web and mobile. Establish frontend standards for performance, accessibility, reliability, and maintainability; build shared component libraries and design systems; resolve complex frontend and cross-stack issues; partner with product, design, and backend teams; and mentor engineers while shaping technical strategy across multiple product areas.

Own and deliver polished, accessible, high-performance frontend experiences using React and TypeScript. Set frontend technical standards, mentor engineers, use AI-assisted development tools, and contribute to product roadmaps. Build backend services and APIs in Go as needed, collaborate with stakeholders, document user-facing products, and help shape engineering culture and quality.

Build the realtime, HIPAA-compliant messaging and collaboration frontend ('Pulse') that makes an AI colleague feel human. Implement complex interactive data visualizations, micro-interactions, and high-performance accessible interfaces. Work embedded with product and design, own UI quality, iterate on AI-driven specs, and deliver production frontend experiences clinicians will trust.

Design, build, and deliver front-end features with strong UX focus. Own technical design, coding, testing, deployment, and monitoring in a continuous delivery, microservices environment. Collaborate with Product, implement automated QA practices, and contribute to production deployments while practicing robust testing methodologies.

Build and optimize pipelines migrating 8,000+ documentation pages, recreate technical documentation UI components in Angular, manage CI/CD and DevOps workflows, and work with Java backend services and proprietary enterprise infrastructure. Collaborate with design and digital teams, engage directly with clients, lead technical projects, and deliver reliable systems under aggressive timelines.

Own frontend product experiences end-to-end, from problem definition and interaction design through implementation, launch, and iteration. Build polished, responsive interfaces with React and TypeScript, develop reusable components and design systems, and improve performance, accessibility, reliability, and cross-browser behavior. The role requires strong product and UX judgment, sophisticated animations, attention to detail, ownership, and comfort working on ambiguous problems in a fast-paced distributed startup environment.

Develop and enhance interactive enterprise planning, reporting, and analytics web applications using SAP Analytics Cloud and front-end technologies. Responsibilities include implementing UI/UX components, integrating REST APIs and data formats, improving application performance and scalability, reviewing requirements, documenting changes, participating in code reviews, and collaborating with technical teams. The role supports a federal customer remotely and requires Public Trust clearance and U.S. citizenship.

Develop and support interactive enterprise planning, reporting, and analytics web applications using SAP Analytics Cloud and front-end technologies. Responsibilities include building UI/UX components, reviewing requirements and designs, consuming REST APIs, optimizing performance and scalability, debugging, documenting changes, participating in code reviews, and collaborating with technical teams. The role supports a federal customer remotely and requires Public Trust clearance and U.S. citizenship.

Develop and enhance interactive front-end web applications for the Budget and Spend solution using SAP Analytics Cloud and JavaScript. Responsibilities include building planning and reporting applications, implementing UI/UX components, integrating REST APIs and data formats, improving performance and scalability, documenting changes, conducting code reviews, and collaborating with technical teams.

Lead front-end technical strategy for Coinbase Advanced trading platform: define and execute a scalable roadmap, deliver a low-latency interface across web and mobile, mentor engineers, anchor complex projects, and ensure high standards for code quality and system design.

Build and own end-to-end frontend experiences for Coinbase card products across web and mobile. Ship high-scale consumer features, improve payment flow performance and SLOs, reduce latency and CX contacts, mentor engineers, and collaborate with product, design, and backend teams to deliver reliable, user-focused card functionality.

Architect and develop scalable frontend applications supporting sales and operational workflows. Lead frontend architecture, frameworks, tooling, accessibility, security, testing, performance, and maintainability. Mentor engineers, guide technical roadmaps, lead large projects, collaborate with product, design, backend, and platform teams, and modernize internal platforms. The role also champions pragmatic AI-assisted development and supports early-stage product evolution in a complex transactional domain.