76 to 100 of 1,868 JavaScript Jobs in the UK

Senior Full Stack Engineer

Location
Leeds, England, United Kingdom
areas mentioned below, or any other of your choosing! The must haves: Fundamental coding experience at least two of the following languages: Python, JavaScript, Node.js, C#, Java Experience working within cloud environments, specifically AWS or Azure (Or both!) Fundamental understanding of infrastructure-as-code with Terraform or an equivalent technology ...

Mid-Level Software Developer

Location
United Kingdom
component libraries such as Material UI, plus unit testing with Jest and React Testing Library. Front-end Technologies: Familiarity with HTML5, CSS3 and modern JavaScript/TypeScript, with a good understanding of responsive design principles, state management patterns and consuming REST APIs. Database Skills: Experience working with relational databases using ...

Software Engineer - AI Integration - Fixed Term Contract - 12 months

Hiring Organisation
TD SYNNEX
Location
Liverpool, UK
Bring A degree in a relevant STEM discipline, or equivalent practical experience. Strong programming fundamentals in Java or another statically typed language. Experience with JavaScript and modern web-development fundamentals. A sound understanding of relational databases, data modelling and SQL. Experience using Git, Docker, automated testing and common software-development ...

Senior DevOps Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
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 ...

Senior Delivery Consultant, AWS Professional Services

Hiring Organisation
AmazonWebServices
Location
London, UK
Employment Type
Full-time
large-scale software development or application engineering with recent coding experience in two or more of: Java, C#/.NET, Python, TypeScript/JavaScript, Node.js, Go, Ruby, Swift.- Experience with Infrastructure as Code (Terraform, CloudFormation, CDK) and CI/CD pipelines (e.g., CodePipeline, GitHub Actions, GitLab CI)Preferred qualification ...

Solution Architect

Hiring Organisation
Version 1
Location
London, UK
Employment Type
Full-time
Azure Event Grid, with the ability to design scalable and resilient integration solutions. Microsoft Stack Expertise: Strong knowledge of the Microsoft stack (.NET, JavaScript, ASP.NET, C#) for plugins, workflows, and custom integrations. Agile Methodologies: Experience working within Agile and DevOps teams. Experience with Azure DevOps for CI/ ...

Lead Software Engineer

Location
Altrincham, England, United Kingdom
development of other engineers. Essential Skills: Extensive experience leading Full Stack Engineering teams, with advanced skills in .NET or Java or Python, plus modern JavaScript libraries. Proven track record of taking technical ownership of large-scale services, including architecture, design, and delivery across the full lifecycle. Strong understanding of architectural ...

Automation Tester

Hiring Organisation
Henderson Scott
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Contract
looking for Experience with automation tools such as Selenium, Playwright, Cypress or Appium. Strong skills in one or more of: Java, C#, JavaScript/TypeScript or Python. Experience with API testing tools such as Postman, RestAssured or Karate. Familiarity with BDD/TDD and tools such as Cucumber or SpecFlow. ...

AWS Integration Developer

Location
Birmingham, England, United Kingdom
integrating them with UI applications. Mandatory hands-on knowledge of Model Context Protocol (MCP) servers. Proficiency in at least one programming language (Python, Java, JavaScript/TypeScript, or Node.js). Solid understanding of JSON, HTTP/HTTPS, REST, OAuth 2.0, JWT, and IAM concepts. Experience with Git, CI/ ...

Test Automation Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
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 ...

Senior Web Developer

Location
Wrexham, Wales, United Kingdom
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 ...

Full Stack Engineer

Hiring Organisation
ISR RECRUITMENT LIMITED
Location
Nationwide, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £525/day (Outside IR35)
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 ...

Software Engineer II - Blockchain/ Digital Assets

Location
Greater London, England, United Kingdom
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 ...

Senior Lead Software Engineer - Full Stack ReactJS, Java, Python, AWS, AI/ML

Location
Greater London, England, United Kingdom
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 ...

Senior Scientific Data Engineer

Location
Greater London, England, United Kingdom
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 ...

Senior Software Developer in Test - Senior Consultant

Hiring Organisation
Centre4 Testing
Location
London, UK
Employment Type
Full-time
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 ...

Principle Engineer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
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 ...

Lead Engineer

Location
Greater London, England, United Kingdom
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 ...

Principle Engineer

Location
United Kingdom
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 ...

Senior Intelligent Automation & Low-Code Developer (Power Platform & Copilot)

Location
Greater London, England, United Kingdom
Power Platform and/or Copilot Previous RPA experience (UiPath, Power Automate Desktop, Blue Prism, Automation Anywhere) Knowledge of coding languages (e.g., .NET, JavaScript, Python ) to extend low-code solutions Experience integrating Power Platform with Azure AI services or other enterprise systems What's in It for You? 25 Days ...

Lead Software Developer In Test - Lead Consultant

Hiring Organisation
Scale Factory
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
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 ...

Senior Quality Engineer

Location
Belfast, Northern Ireland, United Kingdom
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 ...

Senior Web Developer

Location
Birmingham, England, United Kingdom
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 ...

Senior Software Developer - C#/.NET - London, Hybrid

Location
Greater London, England, United Kingdom
.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 ...

Full-Stack Engineer – Billing & Platform (PHP/React)

Location
Scotland, United Kingdom
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 ...