1 to 25 of 37 Contract JavaScript Jobs in London

Dynamics 365 CE Developer

Hiring Organisation
Amtis Professional Ltd
Location
London, Clerkenwell, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £500/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 ...

C# Developer - Front Office Investment bank

Hiring Organisation
Meraki Talent Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£650 - £850 per day, Negotiable
Metrics (including Leverage Exposure) Pre-trade calculations and trade booking workflows Desirable Skills Experience with modern front-end technologies would be advantageous, including: HTML JavaScript/TypeScript React Redux ...

AI Engineer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
GitHub Copilot Claude Code OpenAI GPT/Azure OpenAI Anthropic Claude APIs Agentic AI LangChain LangGraph CrewAI Software Engineering Strong development experience with Python, JavaScript/TypeScript, C# or Java REST APIs and microservices Software architecture and engineering best practices Desirable Skills Experience with any of the following would ...

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 ...

Freelance SharePoint Developer (SPFx / React)

Hiring Organisation
FourPointZero
Location
Central London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £420 to £480 per day
SharePoint REST APIs Deliver responsive, accessible interfaces across the site Essential experience Strong, recent hands-on SPFx development Solid React and TypeScript/JavaScript Custom SharePoint web part and component development Good working knowledge of SharePoint Online Microsoft Graph and/or SharePoint REST APIs Front-end strength across HTML ...

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 ...

Software Developer - DV Cleared - Various Locations

Hiring Organisation
Matchtech
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £600 per day
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 ...

VoD TV Broadcast Technical Architect (AWS, TV)

Hiring Organisation
PCR Recruitment Limited
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£520 - £565 per day + Outside IR35
protocols Must have (technical): * In-depth understanding of modern cloud infrastructure * A track record of delivering complex software projects using AWS technologies * Competency in JavaScript/TypeScript and/or Python * Practical experience of: - Databases: NoSQL and RDBMS - Compute: AWS Lambda, containers and orchestration (EC2, Fargate, Kubernetes etc.) - Messaging/ ...

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 ...

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 ...

Technical Architect

Hiring Organisation
DGH Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day Outside IR35
playout environments. - Knowledge of media formats, codecs and content workflows. - Experience with event-driven architectures and Agile delivery practices. - Hands-on programming capability in JavaScript/TypeScript and/or Python. - Strong understanding of AWS services including: * Lambda and container-based compute platforms * Kubernetes, ECS/Fargate or similar orchestration ...

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 ...

SDET (Software Developer in Test)

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £500 per day
Outside IR35 London/Hybrid - 2x days a week in London Design and develop automated testing frameworks and strategies with Cypress and Playwright using Javascript/Typescript. Create and maintain test scripts utilising WebDriver, Selenium, Gherkin, and Cucumber Performance testing using JMeter Write clear and concise test cases and scenarios ...

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. ...

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 ...

NetSuite Developer (Backend & Integration Specialist)

Hiring Organisation
Stanton House
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
supporting NetSuite integrations using SuiteTalk REST and SOAP services Experience working with API authentication frameworks including Token-Based Authentication and OAuth 2.0 Strong JavaScript or TypeScript development capability Experience working with Middleware platforms such as Celigo, Dell Boomi, Workato, or similar integration technologies Solid understanding of relational database structures, data ...