Top Software Engineer Jobs

Build and enhance LangSmith frontend features: implement user-facing UI with React and TypeScript, create reusable components, translate designs into high-quality code, optimize performance, and collaborate with backend engineers and designers to improve observability and evaluation workflows for LLM applications.

Design and build data-driven front-end interfaces and user flows, partner with product and data science teams to implement solutions, develop data dashboards (Power BI), and iterate based on customer feedback.

Senior Front-End UI Developer (onsite in San Ramon) focused on UI development and test automation. Key responsibilities include working with Java, Selenium-driven automation, RESTful web services and API testing to deliver and validate front-end solutions on a 12-month contract.

Develop and maintain UI/front-end features using HTML5, CSS, AJAX, jQuery, and AngularJS. Integrate with Java/J2EE back-end systems (Spring, Hibernate). Work on front-end implementation, debugging, and cross-team coordination for a 6+ month engagement in New York.

Develop and maintain world-class web applications using React.js and Node.js. Build web services (REST), apply software engineering fundamentals, and use unit testing, TDD, functional testing, and performance practices.

Design, develop, configure, test, and deploy front-end web applications using TypeScript/JavaScript and frameworks like Angular or React. Collaborate with analysts, PMs, and clients, participate in code/design reviews, write documentation and runbooks, build monitoring/automation tools, and support application infrastructure, deployments, and performance improvements.

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.

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.

Design, build, and maintain high-performance Next.js + TypeScript front-end applications. Implement responsive, accessible UIs, optimize rendering and bundle size, integrate with REST and WebSocket APIs, contribute to back-end work as needed, uphold testing and documentation standards, and mentor junior engineers.

Lead design and implementation of scalable, performant frontend architectures and reusable UI components for consumer apps. Own core user journeys, optimize performance and accessibility, set frontend standards, mentor engineers, drive architectural decisions, and use AI-first tooling to ship features at scale.

As a visualization front end engineer, you will develop engaging web applications and data visualizations using advanced JavaScript and frameworks, collaborate with teams, and optimize user experience.

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 Frontend Engineer will build AI-native interfaces, collaborate with design and product teams, and ensure frontend quality in a dynamic product environment.

The Frontend Engineer will implement UI features, automate UI testing, and oversee production releases while focusing on user experience in the blockchain space.

As a Front-End Engineer, you'll create intuitive UIs for AI tools, collaborating with design and backend teams, focusing on performance and user experience.

The Senior Frontend Engineer will develop product capabilities, guide design decisions, establish architecture, mentor junior engineers, and ensure a high-quality user experience.

Design and implement developer-facing UI from Figma to production using Hotwire (Turbo + Stimulus) and ViewComponents. Own the dashboard, API playgrounds, docs, marketing site, and data visualization. Optimize performance and bundle size, maintain a coherent component system, and ship polished, production-ready front-end with tests and CI/CD.

As a Senior Software Engineer, you'll lead projects, enhance product quality, and collaborate on technical strategies while building user-facing features.

The Front-End Engineer is responsible for developing and maintaining user-friendly web applications, collaborating with teams, optimizing performance, and writing clean code.

The Senior Frontend Engineer will design and implement web interfaces, ensuring performance, scalability, and maintainable code while collaborating with design and product teams.

As a Staff Frontend Engineer, you'll drive frontend architecture decisions, implement UI systems, and collaborate closely with design and product teams to enhance user experiences using AI tooling.

As a Technical Lead, Frontend, you will shape the core product, ensure exceptional frontend experience, and foster a strong engineering culture while collaborating closely with design and guiding contributors in an open-source community.

The Frontend Engineer will develop sophisticated components using TypeScript and React, ensure integration with smart contracts, and collaborate with backend teams to enhance digital asset management interfaces.

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.

The Software Engineer role involves developing and shipping high-performance user interfaces using React and TypeScript, with experience in API development and real-time UIs.