Top Senior Front End Developer Jobs in Hartford, CT

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.

The Senior Software Engineer will develop features for Phantom's web platforms, lead new product initiatives, interface with users, and contribute to team culture.

Develop and maintain user interface elements, utilize Vaadin, and train team members on front-end development while focusing on customer experience 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.

Design and build media-rich web experiences for Zillow's 3D Home and Interactive Floor Plan products, optimizing for performance and accessibility while collaborating with cross-functional teams.

The Senior Front-End Engineer will develop and maintain scalable client-side applications, collaborating across product, design, and engineering teams to create high-quality solutions.

As a Senior ASIC Front-End Design Engineer, you will oversee digital SoC design, collaborating to create automotive communication semiconductors, ensuring target performance and area goals are met.

The Senior Front-end Engineer will design and deliver scalable, user-friendly interfaces using React and Node.js, collaborating with cross-functional teams to enhance user experience and optimize performance.

As a Senior Software Engineer, you will lead frontend development, define architecture, optimize performance, and collaborate across teams to create user-friendly logistics applications.

The Senior Frontend Engineer will lead product development for a hotel marketplace, focusing on creating efficient tools for hotel partners and enhancing guest experiences. Responsibilities include ownership of product quality, roadmap execution, and supporting business-critical outages.

Lead development of interactive React front-ends with Chakra UI and Mapbox, build data visualizations (Plotly/ApexCharts), optimize performance for large and real-time datasets, enforce front-end best practices, mentor engineers, and collaborate with product, design, and backend teams to deliver accessible, responsive interfaces.

Owner of the asset discovery experience across tokens, perpetuals, and prediction markets. Design, build, and scale features for web, mobile, and browser extension platforms. Lead initiatives to add blockchain support and new products, interface with users and developers for feedback, and help grow and hire a high-performing Discovery team.

Design, build, and maintain scalable React/TypeScript web applications for Keeper's Admin Console. Integrate with backend REST APIs, implement enterprise UI workflows (RBAC, policy config, audit views), ensure secure, well-tested frontend code, participate in architecture and code reviews, troubleshoot performance and usability, and maintain documentation.

The Senior Frontend Engineer will implement and launch features for Slush Wallet, update frontend architecture, and collaborate with design and product teams.