51 to 75 of 2,252 JavaScript Jobs in the UK

Portfolio Software Full Stack Engineer (Contractor)

Location
Cambridge, England, United Kingdom
improvements. Stay current with emerging AI development tooling and software engineering practices. Required Skills & Experience Strong proficiency in Node.js development using TypeScript and modern JavaScript (ES6+) . Experience designing and implementing RESTful APIs and backend services . Strong understanding of software engineering principles, clean code practices and maintainable application architecture. ...

Node Developer

Location
Greater London, England, United Kingdom
Agile development cycles, contributing to sprint planning, code reviews, and continuous delivery. Key Skills/Experience Proven experience in Node.js development Strong knowledge of JavaScript (ES6+), asynchronous programming, and event‐driven architecture. Experience with building and maintaining RESTful APIs. Solid understanding of SQL and NoSQL databases (e.g., MongoDB, PostgreSQL, MySQL ...

Sr. Technical Lead / Architect

Location
Greater London, England, United Kingdom
development using frameworks such as FastAPI, Flask, or Django; Experience designing and developing RESTful APIs; Good understanding of front-end development with React JS, JavaScript (ES6+), and TypeScript; intermediate knowledge is sufficient; Familiarity with state management using Redux or Context API and experience integrating REST APIs into front-end applications ...

QE AI Lead Engineer

Hiring Organisation
Appcast
Location
London, UK
experience you'll bring:Extensive experience as a Senior QE SDET Engineer or Senior DeveloperHas breadth of experience across different tech-stacks, such as JavaScript/TypeScript, Java, C#, or Python, amongst othersExperienced in RAG Weaviate, OpenAI, Agents, MCP, Langchain, Prompt Engineering, Browser-Use, and DjangoExperienced building AI Tools, Agents ...

Software Project Manager

Hiring Organisation
PEN Group
Location
London Area, United Kingdom
Experience building production software applications. Strong understanding of software architecture and software engineering principles. Experience with one or more modern technology stacks such as: JavaScript/TypeScript React/Next.js Node.js PHP/Laravel .NET Java Good understanding of APIs and system integrations. Experience working with relational databases such ...

Senior Front-End Web Developer (AVP)

Hiring Organisation
Citigroup
Location
Belfast, UK
Employment Type
Full-time
practices. Required Skills & QualificationsEducationBachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).Technical SkillsCommercial experience of React.js, JavaScript, HTML, and CSS.Understanding of JavaFamiliarity with REST APIs. Knowledge of version control systems such as Git. Knowledge of Agile/Scrum methodologiesBasic understanding ...

Senior Back-End Software Engineer

Location
Manchester, England, United Kingdom
Infrastructure as Code (IaC) and GitOps practices. Experience operating containerized workloads on Kubernetes. Exposure to front‐end technologies such as TypeScript, Vue.js, or modern JavaScript frameworks. Experience implementing monitoring, observability, and operational tooling. What Success Looks Like Delivering scalable, secure, and resilient backend services that support Verisk Ignite's products ...

Principal Developer

Location
United Kingdom
Redis, Elasticsearch, Caching Web Technologies (at least one of) - Spring MVC, JSF (IceFaces), Struts, Wicket Hibernate or other ORM Build Tools - Maven, GitHub Actions JavaScript Frameworks (at least one of) – React, Angular (8+) SQL Database technologies (at least one of) - SQL Server, PostgreSQL No SQL Databases (at least ...

Senior Full Stack Engineer

Location
City of Edinburgh, Scotland, United Kingdom
confidently. Essential Skills 5+ years’ proven experience in a Full Stack Engineering role, with advanced skills in .NET, Java or Python, plus modern JavaScript libraries. Experience taking ownership of delivery for services or significant components across the full lifecycle from design to operation. Strong understanding of architectural and design patterns ...

Senior Full Stack Engineer - Vialto Rewards - Senior Manager

Hiring Organisation
Vialto Partners
Location
London, UK
Employment Type
Full-time
development experience building enterprise web applications and services, ideally including payroll, compensation, equity, HR, finance, or tax domains. Strong experience designing and building large JavaScript applications with Next.js and/or React (TypeScript, state management, performance optimization). Strong backend development experience in C# and .NET (ASP.NET, WebAPI, MVC) including ...

Technical Lead

Hiring Organisation
London Stock Exchange Group
Location
London, UK
Employment Type
Full-time
Nexus, etc. Good understanding on Containerisation solutions, e.g., K8, Docker, Kaniko, etc. Proficiency in at least one of the standard programming languages – Java/JavaScript, C#, Python, or similar Object-oriented programmingProficiency in at least one of the standard scripting languages – Terraform, Bash, Ansible, etc. Good understanding of Software engineering ...

Senior Software Engineer

Location
Crawley, England, United Kingdom
preferred. Strong experience building APIs and microservices, including REST and gRPC, is needed. Database experience with PostgreSQL is required. Frontend experience with Angular, JavaScript, HTML5 and CSS3 is needed. Hands-on experience with Docker, Kubernetes and CI/CD pipelines is required. Familiarity with cloud platforms, infrastructure automation and open ...

Lead Java Fullstack Developer

Location
Northampton, England, United Kingdom
within an Agile/Scrum environment. Key Skills & Experience 8+ years' experience in Java Full Stack Development Strong front-end experience with HTML, CSS, JavaScript, React, Redux, Node.js and Jest Strong back-end expertise with Java, Spring Boot, JPA, Hibernate, REST APIs and Microservices Experience with JUnit, Mockito and automated ...

Angular Developer, Hybrid

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £350 per day + Hybrid
customers to build high-quality solutions using Angular and .NET technologies. Key Skills Required Strong commercial experience with Angular Good knowledge of TypeScript, JavaScript, HTML and CSS Experience integrating with REST APIs Solid .NET/ASP.NET Core experience Experience with automated testing tools such as Playwright, Vitest, Cypress or Jest ...

Angular Developer, Hybrid

Hiring Organisation
Sanderson
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£300.00 - £350.00 per day
customers to build high-quality solutions using Angular and .NET technologies. Key Skills Required Strong commercial experience with Angular Good knowledge of TypeScript, JavaScript, HTML and CSS Experience integrating with REST APIs Solid .NET/ASP.NET Core experience Experience with automated testing tools such as Playwright, Vitest, Cypress or Jest ...

Dynamics 365 CE Developer

Hiring Organisation
Amtis Professional Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£400 - 500 per day
following: Dynamics 365 CE/CRM development Plugins, workflows and custom APIs Dynamics 365 configuration and customisation C# .NET Framework/.NET Core JavaScript, TypeScript, HTML and CSS Web APIs and integration services Azure Functions Azure Logic Apps Azure Service Bus Azure API Management Azure DevOps Git source control REST ...

.Net Umbraco Developer

Hiring Organisation
Searchability
Location
Lincolnshire, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £55,000 per annum
/ASP.NET Core Umbraco CMS - commercial development experience (not solely content management) Full-stack web application development and MVC architecture HTML5, CSS/SCSS, JavaScript and/or TypeScript REST APIs and web services Microsoft SQL Server Entity Framework/EF Core Git and source control API and third-party ...

Front End Developer (React & Node.js)

Hiring Organisation
Infused Solutions Ltd
Location
Nationwide, United Kingdom
Employment Type
Permanent
Salary
£45000 - £50000/annum
about front-end development and enjoy working in a collaborative engineering environment. You'll ideally have: Commercial experience with React.js . Good experience with JavaScript and TypeScript . Experience developing backend services using Node.js . Strong knowledge of HTML5, CSS3 and responsive design principles. Experience consuming RESTful APIs. Familiarity with ...

Insights Tech Lead

Location
Greater London, England, United Kingdom
comfortable working with ambiguity Experience developing internal developer tools or self-service analytical products Experience with CI/CD pipelines Experience with modern JavaScript frameworks such as React Passion for evaluating emerging technologies and identifying opportunities to improve Reward's analytical capability Experience mentoring technical colleagues and promoting engineering best ...

Software Developer Backend (SFIA5)

Location
City Of London, England, United Kingdom
testing [cucumber, nightwatch]) Nice to have skills AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable) Experience on a front-end javascript framework such as react, angular or vue.js RedHat OpenShift for container orchestration Knowledge of NCSC’s 14 cloud security principles. You don’t meet ...

Software Engineer

Location
Bristol, England, United Kingdom
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 ...

Senior Software Engineer

Hiring Organisation
Teksystems
Location
Sheffield, South Yorkshire, United Kingdom
Employment Type
Contract
written and verbal. Self-motivated with a proactive approach to problem solving. Desirable Skills Exposure to or interest in Kotlin development. Experience with HTML, JavaScript or modern web technologies. Knowledge of cloud platforms such as AWS, Azure or GCP. Experience working within highly regulated enterprise environments. Familiarity with CI/ ...

Software Developer

Hiring Organisation
Network Mapping Limited
Location
Knaresborough, North Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£55,000
have: GIS & point-cloud processing: GDAL/PDAL, GeoPandas, Open3D, LAS/LAZ/Raster/Vectorhandling, spatial transforms and analysis. TypeScript/JavaScript for developing front-end dashboards and user interfaces. Packaging & distribution: familiarity with publishing and versioning packages (NuGet and/or PyPI). About NM Group ...

Senior Back-End Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Permanent
Salary
£75,000
Infrastructure as Code (IaC) and GitOps practices. Experience operating containerized workloads on Kubernetes. Exposure to front-end technologies such as TypeScript, Vue.js, or modern JavaScript frameworks. Experience implementing monitoring, observability, and operational tooling. What success looks like Delivering scalable, secure, and resilient backend services that support Verisk Ignite's products ...

Senior Full Stack Java Developer

Hiring Organisation
Version 1
Location
London, UK
Employment Type
Full-time
engineering practices like Code Reviews, CI/CD Pipelines and SOLID/DRY principalsHands-on developing/coding role using the following technologies: Frontend (JavaScript/TypeScript or Angular or React or Node)Backend (Java, SpringBoot, Hibernate, Kotlin)Experience in estimation and sizingIntegration experienceAPI Design experienceCloud experienceAppetite to work with ...