1 to 25 of 88 Permanent React Jobs in Chelmsford

Europe & North America 💰 Highly competitive salary + equity (top of market) 🏠 Fully remote (Africa-friendly timezones GMT 2h) or office options 🛠️ Modern tech stack: React, React Native, Expo, TypeScript You'll be perfect if you have: 4+ years frontend development experience Strong React & React Native skills Mobile-first development mindset More ❯

Remote Salary: £80,000 - £110,000 + Equity Industry: HealthTech/Tech for Good 🏥 Location: Fully Remote UK with Offices in London Tech Stack: React Native, React, TypeScript, Node.js 🚀 Company Overview 🌱 Our client is an early-stage, VC-backed AI startup on a mission to redefine the wellness space. Backed … of growth. The Role 🛠 Early stage startup hire — huge ownership and autonomy Working closely with the founders to bring the product vision to life React frontend, React Native Mobile + Node.js Backend Begin as an IC with the view to progress into a lead role, should display these qualities already … Desired Skills 🎯 React Native React TypeScript/Node AWS This role is moving fast — if you’re looking for a big mission, early equity, and a huge seat at the table, now’s the time to jump in. Senior Full Stack Engineer - HealthTech - Fully Remote More ❯

Sciences Sector Strong grasp of computer science fundamentals: data structures and algorithms, complexity, object oriented design Mastery of modern web technologies & Javascript is essential: React, CSS, Node, Angular, etc. Proficient in at least one all purpose imperative language: Python (ideal), Java, C++, etc. Familiar with modern DevOps/CloudOps best More ❯

SC Clearance Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or More ❯

a culture of continuous improvement and learning. What you will bring: Strong expertise in C#, .NET, JavaScript, and TypeScript. Experience with front-end frameworks (React, Vue.js or Angular preferred). Familiarity with PHP, cloud platforms (AWS/GCP/Azure), Docker/Kubernetes. Solid grasp of DevOps, CI/CD More ❯

as Optimizely, Sitecore, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a More ❯

with industry trends and best practices to refine processes and ensure optimal performance. Experience & Technical Skills Strong proficiency in HTML, CSS, and JavaScript frameworks (React, Angular or Vue). Experience developing scalable solutions with Node.js and Express.js. Familiarity with templating frameworks such as Handlebars.js, Pug, or EJS. Practical experience with More ❯

required (no sponsorship) Day Rate: £500–£550 IR35 Status: Outside Location: Fully remote (UK-based only) Tech Stack: JavaScript/TypeScript Node.js/Express React/Angular/Vue AWS/Azure CI/CD pipelines, Docker, Kubernetes Ideal for contractors who: Have active SC clearance Want a straightforward, remote More ❯

commitment to continuous improvement 🛠 Tech Stack Back end: .NET 8/9, C#, ASP.NET WebAPI, Entity Framework Front end: HTML5/CSS3, JavaScript frameworks (React, Vue.js) Database: SQL Server/SQL Azure 🚀 Why This Opportunity? Innovation-Driven: Tackle diverse projects that push the boundaries of what’s possible Global Reach More ❯

building mobile, responsive/adaptive applications. Have first-hand understanding of Agile development methodologies. The FS role should have everything from BE plus: Experience: React, Webpack, SCSS etc, WebSockets, Federated Modules Good to have: Rspack, Micro-frontends We are using HackerRank for the pair programming Tooling: JIRA, Splunk, Slack More ❯

+ bank holidays Birthday Off Private Healthcare Comprehensive Pension Plan 🌳 Tech Stack 🌳 Languages: Ruby-on-Rails, Java, Python, C#, VueJs, Typescript/Angular/React Cloud: Amazon Web Services (AWS) Databases: PostgreSQL, DynamoDB Additional Tools & Frameworks: GraphQL, REST APIs, Software Design Patterns – TDD, DDD, Agile methodologies: Scrum and Kanban 🌳 Key More ❯

work Strong knowledge of NodeJS and have experience building/maintaining a Node backend Strong knowledge of Typescript or another typed programming language Good React knowledge Good understanding of MySQL or a similar relational database Experience using Elasticsearch or a similar NoSQL database Experience working with messaging systems/pub More ❯

Server, Azure SQL, MySQL Good problem-solving skills SOLID principles Dependency Injection Unit Testing Understanding of REST web services Web UI development (including JQuery, React/Angular) Interacts with and influences colleagues, may oversee others or make decisions which impact routine work assigned to individuals or stages of projects Has More ❯

things in a product mindset based around their end users. The role is FULL-STACK but definitely leaning towards the backend. Their stack: Python React/TypeScript Node.js AWS PostgreSQL GenAI + experience with another backend language (Ruby, C++. Elixir, Haskell, Go, Clojure or Scala) Private projects to showcase + More ❯

using JUnit, Mockito CI/CD: Experience with Jenkins or similar pipelines Collaboration: Agile working with cross-functional teams Desirable Skills: Frontend experience with React & TypeScript Messaging: Kafka Build tools: Gradle Database versioning: Liquibase API Design: Swagger/OpenAPI This role is ideal for engineers looking to build on their More ❯

to AI models within Salesforce or other platforms. Familiarity with AWS services such as Lambda, S3, and API Gateway. Experience using JavaScript frameworks like React for UI components or integrations. Knowledge of Salesforce DevOps tools (e.g., Git, Gearset, Copado, or similar). More ❯

now and ambitious enough to scale up later. Must-Haves 4+ years of experience building production-grade web apps Proficiency in modern JS frameworks (React or similar) using TypeScript and integrating with APIs Proficient in modern CSS and utilising frameworks such as Tailwind Confidence working across the stack (Node.js, Postgres More ❯

For Proven experience building high-load, scalable systems Strong Python and AWS expertise Experience with Docker, Terraform, and CI/CD automation Understanding of React.js and frontend architecture Passion for clean code and scalable system design (SOLID, KISS, etc.) Prior leadership or mentoring experience in a start-up or fast More ❯

production support Promote frontend best practices across the team What We’re Looking For: Technical Expertise: HTML, CSS, Bootstrap, JavaScript, TypeScript, Vue 3, React.js Education: Degree in CS or related field Leadership: Experience in fast-paced environments or team management Soft Skills: Strong communication in English and a proactive, problem More ❯

CI/CD pipelines (Jenkins, Gradle) API design with Swagger/OpenAPI TDD (JUnit, Mockito), high code quality standards Kafka for event-driven architecture React, TypeScript Diversity & Inclusion: Here at Amber Labs, we are dedicated to fostering an inclusive and equitable workplace for all. Our commitment to diversity, equality, and More ❯

designing custom components, integrating analytics, and identifying performance improvements. Key requirements include proficiency in BrightScript, SceneGraph, and the Roku Advertising Framework. Knowledge of JavaScript, React, Node.js, HTML/CSS, JWT, and Google Analytics is beneficial. More ❯

working on a complex products, I.e Sensor fusion, AR, or computer vision. ✅ A solid software background with a willingness to learn ✅ Exp with TypeScript, React, Python or Swift ✅ A proactive, problem-solving mindset ✅ Appetite for high-intensity, high-impact work Bonus: ✅ STEM degree from a reputable university Senior Software Engineer More ❯

/DASH) Experience building advanced UI components like EPG and parental controls Comfortable with performance profiling and debugging on Roku Nice to Have: JavaScript, React, or Node.js familiarity Understanding of JWT, HTML/CSS, and DRM concepts Experience with Google Analytics integration Agile team experience and peer code review participation More ❯

effectively explaining technical concepts to both technical and non-technical stakeholders It would be a bonus if they also have: Experience in NextJS/React/Javascript Experience in Docker Experience in web application/Rails performance and optimisation Experience in MongoDB An interest in sharing information and presenting to More ❯

comes from a start-up or scaling SaaS company with a want to solve problems Experience in most of the technology stack; TypeScript, Node, React, Python and AWS You know when to prioritize scalability and when to focus on speed, making informed architectural choices that balance long-term growth with More ❯