276 to 300 of 5,803 JavaScript Jobs in the UK

a strong focus on building complex applications. Expert-level proficiency in React.js (Hooks, Context API, Redux/Zustand or similar state management, performance optimization). Strong command of modern JavaScript (ES6+) and TypeScript. Deep understanding of HTML5, CSS3, and responsive design principles. Experience with CSS frameworks like Tailwind CSS, or preprocessors like SASS/LESS. Experience with front-end build More ❯

systems. Experience with advertising technology (AdTech) highly desired. Proven experience and a passion for developing and operating full stack production systems in Clojure, k8s, and AWS or GCP. ClojureScript, JavaScript, TypeScript, React, Java, Python, and Terraform experience highly desirable. Proven experience leading teams, designing simple/scalable/reliable architectures, building, and operating concurrent, distributed systems, solving difficult and novel More ❯

this role: Docker & Containerization: Familiarity with Docker, including image creation, networking, volume management, Docker Compose, and optimizing Dockerfiles for efficient deployment. Web Technologies: Understanding of HTML5, CSS3, and modern JavaScript (ES6+), ensuring effective front-end development. Frontend Frameworks: Basic knowledge of TypeScript and ReactJS for building scalable and maintainable web applications. Message Queues: Understanding of messaging systems such as RabbitMQ More ❯

for one of our key products, delivering enhancements as part of the ongoing development of the product post MVP. Build, lead, mentor, and guide a team of C# and Javascript developers, fostering a collaborative and high-performing environment. Provide technical leadership and expertise on development best practices, design patterns, and architectural decisions. Participate in the entire software development lifecycle, including More ❯

/iOS GraphQL Microservice Architectures Docker, Kubernetes, and cloud platforms such as AWS, GCP or Azure Understanding of UX principles HTML, CSS, and related web technologies Experience with modern JavaScript libraries and tooling, such as React, Redux, Webpack Any server side development languages such as Java/Kotlin Additional Information: The application form consists of an online assessment, CV upload More ❯

based Development Excellent HTML/CSS skills - you understand not only how to build the data, but how to make it look great too Excellent understanding of object-oriented JavaScript, TypeScript You love new technologies and approaches and want to use the best tools available. We want people who can help us continually evolve our stack Great communication and coordination More ❯

track record of successfully building and delivering digital products (web apps and services) to market using agile methodologies. Strong proficiency in C#, .NET, React and Azure. Other development skillsets: JavaScript, HTML/CSS, Azure PaaS (Azure Functions, Azure Logic Apps, Cosmos DB, Azure App Service, Azure Service Bus), ARM/Bicep templates, SharePoint. Demonstrable creative flair, attention to detail, tenacity More ❯

desire and ability to learn. Required Skills C1 English or equivalent Experience writing production-grade backend systems Experience in writing production-grade React applications Experience writing performant SQL Modern JavaScript ES2018+ TDD and all aspects of testing from unit through to integration Familiarity with CI/CD pipelines Mobile-first web development API design and consumption Agile practices Desirable Skills More ❯

Experience leading and developing solutions across a varied technology stack, including: - Object-Oriented design, SOLID principles, and modern design patterns - Developmentexperience in Microsoft .Net Framework and experience inFront-end JavaScript frameworks like Angular & React - Traditional Relational Database technologies like Oracle, MS SQL Server and - No SQL Databases like MongoDB or DynamoDB - SOA & Microservices architecture implementation using REST APIs, queue-based More ❯

practices, ensuring seamless integration and deployment processes. Our Technology Stack Backend – Java REST APIs, Open Liberty Application Server, Apache Solr Search platform, RDBMS (Postgres, SqlServer, DB2) Frontend App Framework - JavaScript/TypeScript/React CI/CD - GitHub/CircleCI Cloud – AWS What we are looking for: Proficiency in Java and its enterprise libraries, and strong experience in developing and More ❯

patching strategies Environment strategy (Dev/Test/Prod) and release gating Git workflows (feature branching, pull requests) Confident in extending the functionality of Power Platform using C#, .Net, JavaScript/TypeScript to enable client-side logic. Able to lead on architecture and solution governance, transforming business requirements into scalable, maintainable solutions, including: Establishing naming conventions, environment strategy, security model More ❯

from a mix of disciplines, which allows us to come up with cutting edge, high quality solutions. What Background We Are Looking For Programming in one or more of JavaScript, Java, .Net, Python Collaboratively designing and building Proof of Concept or Production systems Source controlling your code with Version Control Systems, for example Git, Mercurial, Perforce Utilising CI/CD More ❯

Espire Infolabs is hiring for Senior Software Engineer for Sheffield, UK location. Job Title: Senior Software Engineer Location: Sheffield, UK Experience: 8+ Years Employment Type: Full-time About the Role: We are seeking a highly experienced and motivated Senior PHP More ❯

Job Purpose: Charles Stanley is seeking a talented Full Stack .NET Developer to join our dynamic ICT department. This role is pivotal in the technical development, support, and maintenance of our digital properties and supporting infrastructure. You will be responsible More ❯

Job Title: Senior Full Stack JavaScript Developer (Contract) Location: Manchester (Hybrid, 1-2 days on-site) Rate: Outside IR35 £500 per day+ Contract Length: Initial 6 months We are working with a well-established health care technology company that is scaling its digital products and services to meet growing demand. They are looking for a highly experienced Senior Full Stack … JavaScript Developer to join them on a contract basis to help build and maintain critical features across both their frontend and backend systems. This role will involve working closely with a cross-functional team of engineers, product owners and designers to develop scalable, performing software that improves patient experiences and clinical work flows. You will be a key contributor to … AWS (Lambda, S3, DynamoDB), Docker, CI/CD pipelines Testing : Jest, React Testing Library Tools : GitHub, Jira, Slack What they're looking for: 7+ years of professional experience in JavaScript development Strong experience in both React.js and Node.js Experience building and maintaining production-grade applications Good understanding of cloud-native development, ideally with AWS Ability to work within Agile teams More ❯

Senior Software Engineer/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has been established … technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll … and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast. About you: You have strong full stack JavaScript development skills and are happy to work on projects that could be weighted either way or a 50/50 split You have experience with JavaScript frameworks they use Vue.js More ❯

Senior/Lead Front-end JavaScript Developer - Consultancy (multiple locations available in the UK) - competitive salary and quarterly bonus ** Please note - due to the nature of work, all candidates must have DV clearance (UKIC preferred) that is active and transferable We are looking for a Senior/Lead Front-end JavaScript Developer to join our consulting client. We have multiple … mentorship to a team of developers, guiding them through best practices and ensuring high-quality code. Design, develop, and maintain front-end components of web applications using HTML, CSS & JavaScript Collaborate with architects and other developers to design robust, scalable, and secure architectures for new projects and enhancements to existing systems. Lead and participate in agile development processes, including sprint … exceed expectations. Stay up to date with the latest industry trends and technologies, and drive continuous learning and innovation within the team. Preferred Experience Proficiency in HTML5, CSS3, and JavaScript (ES6+). Proven experience of Express.js and Nunjucks Experience using the GOV.UK Design System Familiarity with the GOV.UK CASA UI framework Experience with MongoDB and NoSQL variants writing robust and More ❯

Full Stack Engineer (Web Developer or DevOps) - Python & JavaScript Application Deadline: 11 May 2025 Department: Tech Hub Employment Type: Full Time Location: London Description Contract type: Permanent Hours: 37.5 hours Salary: circa £65,000 depending on experience Location: Canary Wharf WFH policy: Employees are required to attend the office 2 days/week Flexible working: Variety of flexible work patterns … Translate designs and wireframes into high quality code. Develop new user-facing features using frameworks such as React.js (other frameworks will be considered). Write front-end components using JavaScript, CSS and integrate with back-end Python components (possibly other languages). Develop modules that satisfy the functional and non-functional requirements. Prepare, review and build reusable components and front … Essential: At least 3 years’ experience of coding in a Python web-development framework, preferably Django. At least 3 years’ experience of coding in a front-end capacity (preferably JavaScript and React). Container-related tools – e.g., Docker, Docker Compose. Databases – e.g., SQL, PostgreSQL. RESTful API development and management. Proactive Performance Tuning. Solid understanding of design patterns and relevant implementation More ❯

Job Description Description Our purpose is to make great financial decision making a breeze for everyone, and that purpose drives us every day. It’s why we’re on a mission to create an automated quoting engine, with the simplest More ❯

a Full Stack Developer or similar role Experience developing desktop and mobile applications Familiarity with common stacks Knowledge of multiple front-end languages and libraries (e.g. HTML/CSS, JavaScript, XML, jQuery) Knowledge of multiple back-end languages (e.g. C#, Java, Python) and JavaScript frameworks (e.g. Angular, React, Node.js) Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache) and More ❯

India Job Summary: We are looking for a highly skilled and motivated Senior Engineer with a strong background in implementing PriceFX solutions and deep expertise in Groovy scripting, Java, JavaScript, and Apache Camel. In this role, you will be responsible for designing and delivering scalable pricing and integration solutions, contributing to digital transformation initiatives for global enterprises. What You Will … and calculations within PriceFX. • Design, develop, and maintain integrations using Apache Camel, REST APIs, and other middleware tools. • Develop backend components and services using Java and frontend elements using JavaScript when required. • Collaborate with solution architects, project managers, and client stakeholders to translate functional requirements into technical solutions. • Perform code reviews, unit testing, performance tuning, and debugging of complex configurations. … Groovy scripting and PriceFX calculation logic setup. • Strong hands-on experience in Java (Spring Boot preferred). • Experience with Apache Camel for integration flows and routing. • Solid understanding of JavaScript for light UI customization or scripting needs. • Familiarity with RESTful APIs, JSON, XML, and third-party system integrations. • Good understanding of pricing processes and enterprise software implementation. • Strong problem-solving More ❯

enjoying what the world has to offer About the Role: Tech Stack: Backend: AWS Lambda, API Gateway, DynamoDB, S3, Node.js Frontend: React/Next.js, React Native Programming Languages: TypeScript; JavaScript, Python Infrastructure: Terraform, GitHub CI/CD pipelines Responsibilities: Design, develop, and maintain advanced applications using React Native. Collaborate with cross-functional teams to define, design, and ship new features. … and Android platforms, having a deep understandingof the ecosystem differences. Familiarity with RESTful APIs and mobile libraries for networking. Experience with performance and memory tuning tools. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud More ❯

junior engineers Writing clean, efficient C# .NET code for scalable, cloud-native systems Contributing to architecture decisions and improving DevOps pipelines Working across the full stack with exposure to JavaScript/React/Angular, and Azure services Supporting quality through testing, code reviews and debugging Staying curious and sharing your knowledge with the team What you'll bring Strong C# … .NET experience in a commercial environment Good knowledge of Azure (or similar cloud platform) Familiarity with JavaScript frameworks (ReactJS, AngularJS etc.) Familiarity with Linux environments and GPU programming would be beneficial Experience with CI/CD, DevOps, and modern engineering practices A passion for clean code, good design and solving meaningful problems Experience mentoring others and working in agile teams More ❯

Senior Full Stack C# Developer, Senior .Net Core/React Analyst Programmer , AWS, Cloud, Azure, C#/.Net, Microsoft Stack, ASP.Net, MVC, WEB, React, Angular, JavaScript, CI/CD - Nottingham 75K Global Software House - East Midlands Salary up to 75K + pension, bonus, flex around start/finish times. - 3 days in office Do you have a solid background in … driven mindset toward achieving measurable outcomes, and authentic enthusiasm for using technology to address practical problems. Technical environment: .Net Core, C# 6+, SQL/Postgres, Visual Studio, GIT lab, JavaScript/React, CI/CD, AWS Company: This technology company has been developing sustainable energy infrastructure solutions for almost 20 years, currently overseeing 25,000+ renewable installations across 35+ countries. More ❯

Senior Software Engineer - hybrid (3 days a week on-site) I'm working with a growing FinTech in Manchester, looking to scale their engineering team with an experienced JavaScript-focused SWE to improve and add new features to their existing platform. You will be a part of a fairly small agile team, communicating with PMs, Designers, and stakeholders to understand … for continuous improvement of the innovative product, whilst helping to mentor more junior devs in the team. Here are the skills our client are looking for: Strong experience in JavaScript and TypeScript Deep understanding of React.js, ideally Next.js Proficiency in Node.js, particularly Express.js for backend services Familiarity with AWS services and cloud architecture Infrastructure as code expertise using Terraform Containerisation More ❯