76 to 100 of 2,045 JavaScript Jobs in the UK

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 ...

Lead Software Engineer

Location
City of Edinburgh, Scotland, 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 ...

Fullstack Engineer

Location
Greater London, England, United Kingdom
efforts, direct pair programming sessions and PR reviews Familiar with trunk‐based development and CI/CD pipelines using GitHub actions Our tech stack: JavaScript/Typescript - especially Winston and package management (using npm) Frontend: React Backend: AWS Lambdas AWS Lambda SQS SNS IAM SES Cloudwatch Cloudfront Secrets Manager GraphQL ...

Lead Software Engineer

Location
Meriden, England, United Kingdom
engineering practices. Experience with tools and technologies such as VS Code, Visual Studio, Rider, ReSharper, Jira, .NET, C#, ASP.NET, REST/SOAP services, WebAPI, JavaScript, React.js, Redux, JWT, Storybook, Jest, Enzyme, SQL Server, Dapper, Log4Net, Autofac, MSTest, ADO, Git, Octopus Deploy, SpecFlow, Selenium WebDriver, JMeter, and Gherkin. Ability to recognise ...

Principal Software Engineer / Senior Full-Stack Software Engineer

Location
Manchester, England, United Kingdom
within your team Collaborate with your peers on technical direction within your team Required Skills and Experience Full-stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development & OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code ...

Full Stack Java Spring Software Engineer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Spring MVC, REST web services and GIT Version Control Strong understanding of Java, Spring framework, UI Design & design patterns. Good understanding of HTML , CSS & JavaScript . Knowledge of Unix/Linux operating system Knowledge of CI/CD pipelines, Docker, Kubernetes and DevOps principles. My client is based in London ...

Full Stack Developer (Node/React)

Hiring Organisation
Arc IT Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 per annum
efforts, introducing new ideas and technologies What You'll Bring Proven experience as a Full Stack Engineer or similar role Expertise in Node, React, JavaScript/TypeScript, HTML, CSS, and responsive design principles Strong understanding of Back End technologies and best practices Passion for writing clean, well-tested code Experience ...

Full Stack Developer .Net React AWS

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550/day £550 p/d Inside IR35
platform issues. - Support service improvement, operational resilience and incident resolution activities. Essential Skills - C#, .NET and Entity Framework - REST APIs and Microservices - React and JavaScript (Vue.js desirable) - AWS cloud services - Docker and CI/CD pipelines - Jenkins, GitLab or equivalent DevOps tooling - PostgreSQL - SOLID principles and secure coding practices - Experience ...

Full Stack Developer .Net React AWS

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£550.00 per day
platform issues. - Support service improvement, operational resilience and incident resolution activities. Essential Skills - C#, .NET and Entity Framework - REST APIs and Microservices - React and JavaScript (Vue.js desirable) - AWS cloud services - Docker and CI/CD pipelines - Jenkins, GitLab or equivalent DevOps tooling - PostgreSQL - SOLID principles and secure coding practices - Experience ...

Full Stack Engineer

Hiring Organisation
Ronald James
Location
Newcastle upon Tyne, UK
Employment Type
Full-time
fluid and responsive templates. Experience developing back-end functionality with C#/ASP.NET MVC/ASP.NET Core MVC or JS/Node/Express. JavaScript Frameworks (Angular, Node, TypeScript, Vue, React, etc)Experience integrating with back-end database systems, including relational databases or no-SQL platforms. Effective verbal and written ...

Senior Software Developer (.NET, EF Core, SQL)

Hiring Organisation
Partnerscale
Location
Bicester, Oxfordshire, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £65,000 per annum
from a blank project, real strength in SQL Server across schema design and hand-written query tuning, working front-end skills across HTML, CSS, JavaScript and jQuery, REST API experience and disciplined Git habits within an agile team. You may have led or mentored a developer before; if you have ...

GenAI Engineer

Hiring Organisation
Stealth iT Consulting
Location
England, United Kingdom
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 JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

Engineering & Science - Senior Software Engineering

Location
Crawley, England, United Kingdom
.NET (C#) and modern frameworks. Strong skills in building APIs and microservices (REST, gRPC) and working with databases (PostgreSQL). Frontend experience with Angular, JavaScript, HTML5, CSS3. Hands‐on experience with Docker, Kubernetes, and CI/CD pipelines (Azure DevOps or similar). Familiarity with open‐source tools, cloud platforms ...

Software Engineer / Full-Stack Software Engineer

Location
Gloucester, England, United Kingdom
Contribute to continuous improvement within your team Collaborate with your peers on technical direction within your team Desired Skills and Experience Core Software Engineering JavaScript frameworks (React, NextJS) TypeScript Python Java REST API development OpenAPI/Swagger Cloud & Infrastructure Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure ...

Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Leicester, Leicestershire, East Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
alongside the core Microsoft technology stack. Requirements 3+ years' commercial Software Development experience Strong C# .Net experience SQL experience Front-end development experience with JavaScript libraries (React/Angular/Vue etc) Cloud experience (ideally Azure) Experience working within Agile environments Strong communication and team-working skills Desirables Docker/ ...

Principal Engineer

Location
London, United Kingdom
haves Degree in Computer Science, Software Engineering, or a related discipline Significant experience delivering software solutions at Principal Engineer level Strong expertise in TypeScript, JavaScript, and Angular or comparable modern front-end technologies Experience building backend services using Node.js or similar technologies Proven experience designing and developing complex distributed systems ...

Principal Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
haves Degree in Computer Science, Software Engineering, or a related discipline Significant experience delivering software solutions at Principal Engineer level Strong expertise in TypeScript, JavaScript, and Angular or comparable modern front-end technologies Experience building backend services using Node.js or similar technologies Proven experience designing and developing complex distributed systems ...

Software Engineer III - AIML Experimentation, Observability and Governance

Location
Bournemouth, England, United Kingdom
background (front-end and back-end). Proficiency in developing, debugging, and maintaining code in one or more modern programming languages (e.g., Java, Python, JavaScript/TypeScript). Solid experience with AWS cloud services and infrastructure automation using Terraform. Demonstrated ability to support technical initiatives and mentor junior engineers. Strong ...

Senior C# Developer Full Stack / API / AI

Hiring Organisation
Adria Solutions
Location
Warrington, Cheshire, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
Good understanding of software architecture, design patterns and clean coding principles. Strong SQL experience, ideally with MariaDB or MySQL. Frontend development experience using modern JavaScript frameworks. A genuine interest in AI and emerging development technologies. Experience using, or a strong desire to adopt, AI-assisted development tools such as Claude ...

Software Developer

Hiring Organisation
Genesis Employment Services Ltd
Location
Coventry, Warwickshire, United Kingdom
Employment Type
Permanent
Salary
GBP 40,000 - 60,000 Annual
Herd Dev & Tech. Essential skills and experience Proven experience in software development, full-stack development or modern web application development. Strong experience with JavaScript or TypeScript. Experience developing front-end applications using React, Next.js or a similar modern framework. Experience with back-end technologies such as Node.js, Python, PHP, .NET ...

Software Developer

Hiring Organisation
Genesis Employment Services Ltd
Location
Coventry, West Midlands (County), United Kingdom
Employment Type
Permanent, Contract, Temporary
Salary
£40000 - £60000/annum
Herd Dev & Tech. Essential skills and experience Proven experience in software development, full-stack development or modern web application development. Strong experience with JavaScript or TypeScript. Experience developing front-end applications using React, Next.js or a similar modern framework. Experience with back-end technologies such as Node.js, Python, PHP, .NET ...

SC Cleared Senior Pega Developer

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£506/day £506 per day (inside IR35)
/'25 or later. Pega Constellation experience. Pega DX API experience. Pega GenAI Blueprint experience. Experience delivering applications on Pega Cloud. Knowledge of Java, JavaScript, SQL and related web technologies. Experience with automated testing and Pega testing capabilities. Cloud platform experience, including AWS or Azure. Application modernisation and legacy migration ...

SC Cleared Senior Pega Developer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£506.00 per day
/'25 or later. Pega Constellation experience. Pega DX API experience. Pega GenAI Blueprint experience. Experience delivering applications on Pega Cloud. Knowledge of Java, JavaScript, SQL and related web technologies. Experience with automated testing and Pega testing capabilities. Cloud platform experience, including AWS or Azure. Application modernisation and legacy migration ...

Senior Software Developer in Test - Senior Consultant

Location
Greater London, England, United Kingdom
clearance Significant experience in Agile environments (e.g., SCRUM, Kanban). Solid technical development background with strong coding skills in Java, C#, TypeScript, JavaScript, or similar Proven expertise in automation testing, with hands‐on experience using tools like Playwright, Selenium, Cypress, or RestAssured Strong knowledge of integration testing and automation frameworks ...

Senior QA / Test Engineer - AI & Platform

Location
Manchester, England, United Kingdom
solutions would be highly desirable. Understanding of AI evaluation concepts including groundedness, relevance, hallucination testing and retrieval quality. Python, TypeScript/JavaScript or similar scripting experience would be advantageous. Strong analytical, problem-solving and stakeholder communication skills. Why people choose to grow their careers at UBDS Group Professionals choose ...