1 to 25 of 37 Contract JavaScript Jobs in London

AI Automation Tester

Hiring Organisation
VIQU IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £525 per day
experience with automation tools such as: Selenium, Cypress, Playwright, Karate, Postman/Newman Strong programming and Scripting skills using languages such as: Java, JavaScript/TypeScript, Python, C# Experience testing web, API, and microservices-based applications. Familiarity with CI/CD tools such as GitHub Actions, Jenkins, Azure DevOps ...

Full Stack Developer

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
Software Engineer. Strong SQL Server and Azure SQL expertise, including: Database design Query optimisation Performance tuning Data integrity Strong commercial experience with: React Node.js JavaScript TypeScript Experience deploying and supporting applications within Microsoft Azure, including Azure Web Apps. Experience using GitHub Copilot and modern AI-assisted development workflows. Strong stakeholder ...

Fullstack Engineer - Financial services (Java/React)

Hiring Organisation
LMA Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£575 - £600 per day
using Java and React/React Native. Build scalable RESTful APIs and microservices that support enterprise-grade applications. Develop responsive user interfaces using modern JavaScript frameworks and best practices. Design and optimise SQL database solutions ensuring performance, scalability and reliability. Contribute to cloud-native application development using AWS services. Participate ...

AI Test Engineer (SC Cleared)

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
across the full lifecycle Hands-on expertise with Microsoft-based environments (e.g. Azure testing tools, AI platforms) Proficiency in one or more: Python, Java, JavaScript, SQL, or R Proven experience in: AI/Generative AI testing RAG (Retrieval-Augmented Generation) solution validation (e.g. RAGAS framework) CI/CD, DevOps ...

AI Test Engineer (SC Cleared)

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £650 per day
across the full lifecycle Hands-on expertise with Microsoft-based environments (e.g. Azure testing tools, AI platforms) Proficiency in one or more: Python, Java, JavaScript, SQL, or R Proven experience in: AI/Generative AI testing RAG (Retrieval-Augmented Generation) solution validation (e.g. RAGAS framework) CI/CD, DevOps ...

Senior Full Stack Developer (React, JavaScript & C#.NET)

Hiring Organisation
Pontoon
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£650 per day
collaborative environment and are eager to make an impact, we want to hear from you! Key Experience Needed: Front-end: Strong proficiency in React.js, JavaScript/TypeScript, Redux/RTK, and modern UI patterns, develop framework is essential Back-end: Expertise in C# .NET Core, REST APIs, and microservices-based … RESTful APIs with a focus on scalability and resilience. Create UI Components: Craft responsive and modular UI components using React JS and modern JavaScript/TypeScript patterns. Collaboration: Work closely with business stakeholders and domain experts in Risk, Regulatory Reporting, and Finance. Power BI Expertise: utilise your knowledge of Power ...

Frontend Developer – React / Next.js

Hiring Organisation
Standard 8
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£300 per day
works and start contributing without needing weeks of hand-holding. What you’ll be working with The main stack is React, Next.js, TypeScript, JavaScript, HTML and CSS . You should also be comfortable working with modern styling approaches such as Tailwind CSS , consuming REST and/or GraphQL APIs ...

Solution Engineer – Enterprise AI (6-Month Contract)

Hiring Organisation
SJIT
Location
Lambeth, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £700/day
platform. What You Bring Hands-on Code: At least 2+ years of professional software development experience (OOP). Tech Stack: Proficiency in Python and JavaScript, alongside modern frameworks (React, Angular, Vue, etc.). Cloud & Data: Proven experience deploying to AWS, GCP, or Azure, alongside a strong understanding of SQL/ ...

Software Developer - DV Cleared - Various Locations

Hiring Organisation
Matchtech
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 450 - 600 Daily
source-code control systems, build systems, artifact repositories, and deployment frameworks. Job Requirements: Proficiency in software application development using languages such as Java, Python, JavaScript, C++, or C#. Experience with database technologies (e.g., Elastic, MySQL, SQL Server). Understanding of CI/CD platforms (e.g., GitLab, Jenkins) and source-code ...

Net Developer

Hiring Organisation
Pontoon
Location
Bromley, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £750/day
Server, TSQL, SSIS, SSRS. Familiarity with Git/Bitbucket and job scheduling tools like Autosys. Experience with front-end technologies such as Angular, JavaScript, and ASP.NET MVC is a plus. Strong analytical and problem-solving skills with meticulous attention to detail. Excellent communication and interpersonal skills; able to effectively collaborate ...

.Net Developer

Hiring Organisation
Pontoon
Location
Bromley, Kent, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £750 per day
Server, TSQL, SSIS, SSRS. Familiarity with Git/Bitbucket and job scheduling tools like Autosys. Experience with front-end technologies such as Angular, JavaScript, and ASP.NET MVC is a plus. Strong analytical and problem-solving skills with meticulous attention to detail. Excellent communication and interpersonal skills; able to effectively collaborate ...

Ecommerce AI Engineer (Contract)

Hiring Organisation
Salt Search
Location
South West London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£250 - £275 per day
bring: * At least five years' experience across AI, software engineering, ecommerce, platform engineering or a closely related area * Strong development skills in Python and JavaScript or TypeScript * Experience developing and optimising WordPress websites, including custom themes, plugins and API integrations * Experience integrating booking engines, ecommerce platforms and payment systems * Practical ...

Ecommerce AI Engineer (Contract)

Hiring Organisation
Salt
Location
Westminster, London, City of Westminster, United Kingdom
Employment Type
Contract
Contract Rate
£250 - £275/day
bring: * At least five years' experience across AI, software engineering, ecommerce, platform engineering or a closely related area * Strong development skills in Python and JavaScript or TypeScript * Experience developing and optimising WordPress websites, including custom themes, plugins and API integrations * Experience integrating booking engines, ecommerce platforms and payment systems * Practical ...

Full Stack Engineer (Front End focus) - Banking

Hiring Organisation
AMS CWS
Location
City of London, London, United Kingdom
Employment Type
Contract
initiatives. The skills you'll need: Full-stack software development experience, with strong expertise in front-end engineering. Strong commercial experience with ReactJS, TypeScript, JavaScript, HTML5 and CSS3, building scalable and responsive web applications. Experience with modern front-end frameworks and tooling, including Next.js and Tailwind CSS. Experience developing ...

Dynamics Developer

Hiring Organisation
Brio Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 480 Daily
Bring Proven experience developing within Microsoft Dynamics 365 (CE/CRM). Strong skills in Power Apps, Power Automate, and Dataverse. Proficiency in C#, JavaScript, and Dynamics SDK/custom connectors. Understanding of Azure functions, APIs, and integration patterns. Experience working in agile, multidisciplinary environments. Awareness of government data ...

Dynamics Developer

Hiring Organisation
Brio Digital
Location
London, Baker Street, United Kingdom
Employment Type
Contract
Contract Rate
£480/day
Bring Proven experience developing within Microsoft Dynamics 365 (CE/CRM). Strong skills in Power Apps, Power Automate, and Dataverse. Proficiency in C#, JavaScript, and Dynamics SDK/custom connectors. Understanding of Azure functions, APIs, and integration patterns. Experience working in agile, multidisciplinary environments. Awareness of government data ...

Sitecore Developer - Outside IR35

Hiring Organisation
SRG
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£0 per day
independently in a remote environment. Desirable Sitecore certification and/or Sitecore MVP experience. Experience with Sitecore upgrades and platform migrations. Exposure to React, JavaScript frameworks and headless CMS implementations. Experience integrating CRM, marketing or eCommerce platforms. Knowledge of ElasticSearch, Azure DevOps, TeamCity or Octopus Deploy. What's on Offer ...

Power Platform Developer

Hiring Organisation
Hunter Selection
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£50000 - £65000/annum 33
Developer Commercial experience developing solutions using Power Apps and Power Automate. Experience with Dataverse and Power Platform governance concepts. Understanding of Power FX, JSON, JavaScript, and system integration principles. Exposure to Power Automate Desktop, Copilot Studio, or similar automation technologies. Familiarity with Microsoft 365 and Azure environments. Strong problem-solving ...

ServiceNow Developer (HRSD)

Hiring Organisation
Mpower Plus UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Flow Designer & Legacy workflows, ACLs, notifications, reports and dashboards. Test automation experience with ServiceNow ATF, including designing, maintaining, and executing automated tests. Proficiency in JavaScript; HTML/CSS knowledge is a plus. Experience working in agile delivery teams. ...

ServiceNow Architect

Hiring Organisation
TechNest Talent
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£90,000
technical teams. Essential Skills: Extensive ServiceNow architecture experience. Strong ITSM knowledge plus at least two additional ServiceNow modules. CMDB and Discovery implementation experience. Strong JavaScript, Glide and Flow Designer knowledge. Excellent stakeholder management and communication skills. Desirable Skills: ServiceNow CSA, CIS, CAD or CTA certifications. Agile/Scrum experience. ...

ServiceNow Architect

Hiring Organisation
TECHNEST TALENT LTD
Location
Tower Hamlets, Greater London, Portsoken, United Kingdom
Employment Type
Permanent, Contract
Salary
£80000 - £90000/annum contract rates available also
technical teams. Essential Skills: Extensive ServiceNow architecture experience. Strong ITSM knowledge plus at least two additional ServiceNow modules. CMDB and Discovery implementation experience. Strong JavaScript, Glide and Flow Designer knowledge. Excellent stakeholder management and communication skills. Desirable Skills: ServiceNow CSA, CIS, CAD or CTA certifications. Agile/Scrum experience. ...

Senior QA Engineer (Defence)

Hiring Organisation
Opus Recruitment Solutions
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 350 - 400 Daily
ownership of test strategy, quality processes, and acceptance evidence. - Automation testing experience using Playwright, Cypress, Selenium, pytest, or similar frameworks. - Python and/or JavaScript/TypeScript skills. - Experience working within defence, government, or other regulated sectors would be highly advantageous. - SC Clearance held or eligibility to obtain clearance. This ...

React Native Developer - Outside IR35

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450 per day + Outside IR35
practices. Support CI/CD processes and ensure robust testing standards. Requirements Proven experience developing mobile applications with React Native . Strong knowledge of JavaScript/TypeScript . Experience integrating APIs and backend services. Understanding of mobile application architecture, performance optimisation, and security best practices. Experience working within Agile delivery ...

Fullstack Developer

Hiring Organisation
Opus Recruitment Solutions
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £650/annum
backend engineers, architects, UX designers, and business stakeholders to deliver secure, data-driven solutions in a highly regulated environment. Tech Stack Frontend React TypeScript JavaScript (ES6+) HTML5 CSS3 Backend Exposure Node.js REST APIs GraphQL Nice to Have Next.js AI integrations (OpenAI, Azure AI, or similar) Essential Skills & Experience Strong commercial … experience building enterprise-grade frontend applications using React Advanced JavaScript and TypeScript development skills Solid understanding of responsive design, modern UI development, HTML5, and CSS3 Experience developing reusable component libraries and scalable frontend architectures Proven experience integrating RESTful APIs, GraphQL services, and third-party platforms Experience with state management solutions ...

ServiceNow Developer

Hiring Organisation
Coltech Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450/day
hands-on ServiceNow development Strong commercial experience with HRSD/HR Service Delivery HR Case Management, HR Services, COEs and employee lifecycle processes Strong JavaScript ServiceNow ATF/Automated Test Framework Flow Designer, ACLs, Business Rules and Service Catalog Experience working within Agile delivery teams Desirable ...