Top Javascript Jobs

Build responsive, accessible React frontends and Node.js backend services; use AI-assisted development tools responsibly to accelerate implementation, testing, and refactoring; follow TDD, CI/CD, and automated testing; collaborate with UX, product, and QA; contribute to hiring and knowledge sharing for the London engineering team.

Build, maintain, and promote a robust JavaScript/TypeScript client library and related front-end components. Integrate native libraries (N-API/node-addon-api/Wasm), develop responsive React apps, contribute to backend REST APIs (Python/Rust), manage CI/CD and npm publishing, document components with Storybook, and collaborate with design for production-ready components.

As a Senior Full-Stack Software Engineer, you will develop AI-centric web applications, participate in architectural decisions, and mentor team members while managing project priorities and deliverables.

Develop user-centric, accessible front-end web applications in collaboration with UI/UX designers and back-end developers using JavaScript and React. Ensure cross-browser/platform compatibility, meet accessibility and security requirements, participate in code reviews, mentoring, and support back-end development as needed.

Design, develop, test, deploy, and maintain enterprise applications and APIs. Analyze system flows, automate processes with scripting, create tests and architecture/data-flow diagrams, and work in an Agile team using DevSecOps and container orchestration to meet stakeholder requirements and tight deadlines.

Design and implement robust backend architectures using Node.js and TypeScript, focusing on scalable services and pipelines, while ensuring code integrity and optimizing performance.

Develop and extend policy-driven classification and M365 web tools using JavaScript/TypeScript and Node.js. Participate in full software lifecycle: requirements elicitation, design, implementation, testing, documentation, code reviews, and customer support. Use AWS, Docker, Git/GitLab, Jest, and Cypress; follow team coding standards and troubleshoot production issues.

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.

Design, develop, and maintain front-end (React/HTML/CSS) and back-end (Django/Python) web applications. Architect platforms, perform code/design reviews, interface with stakeholders, write documentation and tests, support deployments and system performance improvements, and build monitoring/automation tools.

Senior full‑stack engineer responsible for building backend services (Node.js/TypeScript) and integrating with frontends (React/Vue). Ship production APIs, collaborate cross‑functionally, own delivery, mentor peers, and develop modular, testable, performant systems across diverse greenfield projects.

Lead full-stack development using Next.js and NestJS, build Node.js backend services with PostgreSQL, implement real-time messaging, apply prompt engineering and model training, develop embeddings/chunking and RAG features, write TypeScript code, mentor juniors, and participate in code reviews.

The role involves owning product feature development, participating in system design, and maintaining software performance in an agile setting.

Develop back-end features using JavaScript, participate in system design, and take ownership of product development in an agile environment.

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 Senior Front End Software Developer will create secure, performant, cross-platform applications, collaborate on feature implementations, and ensure code usability and testing, with a focus on design and structure.

The Web Developer is responsible for designing, developing, debugging, and modifying software applications, providing solutions, and supporting documentation.

Seeking a full-time JavaScript Developer/Web UI Developer proficient in web standards, JavaScript programming, and popular frameworks like React and Angular.js.

Senior-level remote Fullstack JavaScript developer responsible for building and owning frontend and backend features using JavaScript/TypeScript, Node.js, and React. Develop RESTful APIs, work with relational or NoSQL databases, use cloud services (AWS), mentor teammates, and potentially grow into technical leadership. Requires strong English and availability to overlap time zones.

Senior front-end engineer responsible for building complex, interactive web applications using advanced JavaScript, HTML5 and CSS3. Collaborate with UX and product owners, design reusable components, enforce client-side business logic, and lead unit test and automation efforts while working in Agile teams.

Senior front-end developer building complex, interactive web applications using advanced JavaScript, HTML5 and CSS3. Collaborate with UX, product, and backend engineers to design reusable components, enforce client-side business logic, write and automate tests, and continuously improve product and processes.

Develop and maintain JavaScript-based scripts to enable web data for reporting tools. Understand existing tag management systems and write data manipulation and reporting scripts integrating tag management (Tealium, Ensighten) with analytics platforms (Google Analytics, Adobe SiteCatalyst).

Join a team building a strategic reference data platform for client, account and instrument data. Deliver horizontally scalable, high-performance JavaScript applications, collaborate with senior business and technical partners, and maintain/extend mission-critical software. Requires strong problem-solving, independence, and ability to learn new technologies quickly.

Require advanced, recent JavaScript expertise (not front-end). Foundational SQL knowledge including joins, sorting, filtering, grouping/aggregation. Familiarity with Java/.NET/C++ is helpful. Must pass background and drug screen.

Seeking a JavaScript developer to build and optimize front-end web pages. Responsibilities include advanced JavaScript (objects, prototypes, event-driven patterns, closures, OOP), DOM manipulation for performance, working with an MVC framework, and authoring/optimizing cross-browser CSS3 and HTML. Backbone and Dust experience preferred.

Front-end developer to build and maintain a customer-facing solar-usage portal. Requires strong JavaScript and HTML/CSS skills, unit-test experience (Karma/Mocha/Chai), and familiarity with Angular/AngularJS. Collaborate in an Agile team, communicate clearly, and work on a 6-month contract with optional remote work.