76 to 100 of 1,579 JavaScript Jobs in the UK

hear from you.Technical landscapeWe do not recruit around a rigid stack. You may have experience with technologies such as Go, Java, C#, Python, JavaScript, TypeScript, React, AWS, Azure, Kubernetes, relational databases, event-driven systems, open-weight models, vector search or agent orchestration frameworks.Depth, adaptability and engineering judgement matter more than ...

contributing to engineering best practices. Essential Skills & Experience Active SC Clearance Strong software development experience in one or more of: Java C# Python JavaScript/TypeScript Understanding of: Object-Oriented Programming SOLID Principles Design Patterns Refactoring Code Reviews Experience developing: Automation Frameworks Engineering Tools APIs Web Applications Distributed Systems Experience ...

backend developers, designers, and stakeholders to deliver end‐to end solutions. Person Specification The successful candidate will have strong, demonstrable experience in: React.js Next.js JavaScript (ES6+) and modern browser APIs HTML5 & CSS3 (responsive design, accessibility, cross-browser compatibility) TypeScript Tailwind CSS or similar modern CSS frameworks Node.js (front‐end tooling ...

Python Back-End services and AWS infrastructure, taking features from initial refinement through to production. Skills and Experience: Strong hands-on React, TypeScript/JavaScript and Python/FastAPI development skills. Experience building REST APIs, microservices and secure authentication using OAuth2, OpenID Connect and JWT. Practical AWS experience, including ...

automated testing, and DevOps practices Interest in or exposure to blockchain and Distributed Ledger Technologies (DLT) Preferred qualifications, capabilities and skills Familiarity with TypeScript, JavaScript, or front-end development (ReactJS or similar frameworks) Experience building on public or permissioned blockchain platforms (e.g., Solana, Ethereum/EVM, Hyperledger, Polkadot, Cosmos, Avalanche ...

full stack development experience, with at least 3 years in a technical leadership or lead developer role. Expert proficiency in React, TypeScript, modern JavaScript (ES6), HTML5, and CSS3, with a track record of building accessible, high-performance, production-grade interfaces. Experience integrating APIs or services into front-end applications. Building ...

delivering data products, integrations, and scientific applications as a Data Engineer or in a similar field. Expertise in Python and working knowledge of JavaScript, TypeScript, Node, React, SQL. Familiarity with networking, CI/CD, and full stack development. Familiarity with cloud engineering on AWS, including core services such ...

operating within an Agile framework. Pro‐active DevOps culture, CI/CD pipeline and trunk‐based development. Excellent knowledge of HTML/CSS (SCSS), JavaScript and Typescript. Fluent use of Git (GitLab). Awareness of website performance best practices and non‐functional requirements. Ability to write, review or assist ...

Experience as a Software Engineer with strong capability in one or more of the following: Backend development (Java Spring Boot, Maven, Python) Frontend development (JavaScript/TypeScript, React, npm) Proven experience designing, developing, and deploying scalable backend systems. Familiarity with DevOps, CI/CD and containerisation technologies (Jenkins, Kubernetes, Docker ...

with one of Azure/AWS/GCP Kubernetes, Docker TDD/BDD Experience working in an Agile development environment Experience with HTML5, CSS3, JavaScript and React or Angular 10+ would be an advantage Competitive Salary Bonus Scheme Private Healthcare Insurance 25 Days Annual Leave + Bank Holidays ...

background should ideally include: Hands-on experience with a UI automation framework such as Playwright, Cypress or Selenium. Coding or scripting experience using TypeScript, JavaScript, Java or a similar language. An understanding of REST API testing and validation. Experience managing test cases and defects through tools such as Jira ...

Experience: Eligibility for SC clearanceSignificant experience in Agile environments (e.g., SCRUM, Kanban).Solid technical development background with strong coding skills in Java, C#, TypeScript, JavaScript, or similarProven expertise in automation testing, with hands-on experience using tools like Playwright, Selenium, Cypress, or RestAssuredStrong knowledge of integration testing and automation frameworksExperience ...

modern cloud infrastructure, including Azure or AWS. Experience developing web applications within the Python ecosystem. Experience designing or building user interfaces. Working knowledge of JavaScript or TypeScript, HTML and CSS, alongside frameworks or runtimes such as React, Angular or Node.js. A degree in computer science or another relevant subject. Leadership ...

Knowledge of SOLID principles, domain-driven design (DDD) and test-driven development (TDD) - Experience with test automation, unit testing, mocking and refactoring - Experience with JavaScript frameworks such as React - Experience using object-relational mapping (ORM) tools, such as Entity Framework - Experience working with Agile and Scrum methodologies - Experience using agentic ...

TypeScript (Node.js & React), AWS (EKS, Lambda, Aurora RDS), Kubernetes, GraphQL, Kafka, Mongo. You're comfortable with all of these, and have extensive knowledge of JavaScript more generally, the AWS ecosystem, and running containerised applications. Past Experience - You are currently a Lead Engineer or Tech Lead, leading a small team ...

leadership in QA/testing roles, with experience guiding teams and managing delivery in Agile environments (SCRUM, Kanban) Strong programming skills in Java, C#, JavaScript/TypeScript , or similar Deep expertise in test automation frameworks such as Selenium, Playwright, Cypress, or RestAssured Experience with integration testing, test strategy , and test ...

Quality Engineering, Test Automation Development, or Software Testing. 2+ years building and maintaining automated test frameworks from the ground up using C#, Python, Java, JavaScript, or TypeScript with tools such as Selenium WebDriver, Cypress, Playwright, XCUITest, Espresso and Appium. Strong experience with API testing tools and frameworks (Postman, REST Assured ...

scripting languages; Python, GO, PowerShell, Bash, Groovy* Programming language with a working knowledge in at least one of Java, C# (.NET Framework/Core), JavaScript (Node.js), Ruby, C++* Developer tooling; Full stack CI/CD, GitLab, Jenkins, SonarQubeNexus* Knowledge and working experience of containerising application components including writing DockerFiles ...

absence of other senior engineering leaders. Experience operating within Agile and DevOps delivery models. Desirable Skills: Application & Integration Technologies C# .NET Entity Framework JavaScript React Vue.js Windows Presentation Foundation (WPF) REST APIs Microservices architecture AI & Data Technologies AWS SageMaker Large Language Model (LLM) integrations AI-assisted analytics solutions Python-based ...

wider payments industry, with a passion for learning and continuous improvement. Skills in the following areas are considered essential: Java HTML CSS JavaScript REST APIs Spring Boot JBoss J2EE JSP Servlets etc. Gradle or Maven Databases (Oracle) DDL and SQL Basic Networking Git & GitHub Linux (bash, ksh, ssh, etc.) Experience ...

.NET Core, and SQL/T-SQL. Solid understanding of database design, performance optimisation, and query tuning. Experience delivering front-end functionality using HTML, JavaScript, and Razor. Experience building and supporting integrations with third-party systems using REST APIs or similar technologies. Practical experience working with Azure Cloud Services ...

comparable scientific discipline Professional experience developing and delivering commercial software products in production environments Strong software engineering skills with proven proficiency in JavaScript/TypeScript and C# Solid knowledge of object-oriented software design principles and modern software development practices Experience across multiple stages of the software development lifecycle, from ...

.NET/.NET Core. Good understanding of SQL and relational databases, with experience writing and optimising queries. Experience building web applications using HTML, JavaScript, and Razor or similar front-end technologies. Experience working with REST APIs and integrating applications with third-party systems. Experience using Visual Studio or VS Code ...

alongside hands-on experience designing, building, and consuming REST APIs and system-to-system integrations . Modern frontend stack: Practical experience with TypeScript/JavaScript, Node.js, and modern frontend frameworks such as React . Engineering & DevOps foundations: Familiarity with modern software development practices (Git, code reviews, automated testing) and DevOps ...

data modelling and data warehousing skills, with the ability to transform, reconcile and manage customer data across multiple systems. Proficiency in Java, Python or JavaScript for integrations, automation and platform development. Experience with CI/CD, source control, automated testing and deployment pipelines using tools such as GitHub, GitLab, JFrog ...