1 to 25 of 46 Contract JavaScript Jobs in London

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 ...

Full Stack Developer (Camunda)

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£542 per day
. · Strong Java development experience, including Spring Boot, JPA, Hibernate, JUnit, Mockito, and REST API development. · Front-end development expertise using React JS, Redux, JavaScript, HTML, CSS, and Axios. · Experience working with SQL databases, preferably MS SQL, and microservices architectures. · Knowledge of DevOps and CI/CD tools including GitLab ...

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 ...

Vice President & Senior VP Java Equities

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£759 - £1,000 per day
frameworks - with a strong focus on building production-grade, enterprise-scale services. Frontend Development: Proficiency in modern front-end technologies including Angular, TypeScript/JavaScript, HTML/CSS, with working knowledge of jQuery and component-based UI architecture. Data & Persistence: Strong command of relational and analytical database technologies, e.g., Oracle ...

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 ...

Frontend Developer

Hiring Organisation
Intelligent Resourcing Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Experience in full software development life cycle of web application and microservices Experience in development of complex cloud-based applications using the following technologies: JavaScript (Node.js), HTML, CSS, Redis, Express, Nunjucks, Postgres, Kibana, and Grafana. Experience of working with Mocha, Sinon, Chai, Micro services Experience of developing and consuming REST ...

Full Stack Developer

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400.0 - £410.0 per day + up to £410 pd (Inside IR35)
large, complex organisation Ability to work onsite 4 days per week Technical expertise in Python (Django, Flask frameworks) Demonstrable skills in React, JavaScript (Vanilla) and Node.js Working knowledge of API integration and workflow automation SQL (Database Management) and Data Integration skills Azure Cloud deployment YAML pipeline experience Familiarity with Azure ...

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 Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£520 - £565/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
£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 ...

Front-End Web Developer - React, Adobe Experience Manager

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £410/day £market rate (Inside IR35)
teams in an Agile environment. Key Requirements Strong React development experience Adobe Experience Manager (AEM) expertise, including HTL/Sightly, Clientlibs and component development JavaScript (ES6), HTML5, CSS3, SASS/LESS and Node.js Responsive, accessible and performance-focused web development Knowledge of WCAG accessibility standards and secure coding practices Experience ...

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 ...

Full Stack Developer

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £1000 per day
join their team. The role will be working development and implementation of applications used across trading. Requirements Java, Springboot, Microservices UI - Angular, Typescript, JavaScript - (open to react also) Kafka, MQ, FIX Protocol Investment Banking or Investment Management experience. AI Driven Development tools, Claude Code, Github Code, Windsurf etc Contract ...

Full Stack Developer

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£1000/day
join their team. The role will be working development and implementation of applications used across trading. Requirements Java, Springboot, Microservices UI - Angular, Typescript, JavaScript - (open to react also) Kafka, MQ, FIX Protocol Investment Banking or Investment Management experience. AI Driven Development tools, Claude Code, Github Code, Windsurf etc Contract ...

SDET (Software Developer in Test)

Hiring Organisation
Sanderson Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
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 ...

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 ...

Salesforce Marketing Cloud Solutions Engineer – London

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £458 per day
plus. - Technical Skills: Proficiency in AMPscript, GTL, SQL. Experience with REST and SOAP APIs is highly desirable. Knowledge of HTML, CSS, and JavaScript a plus. - Marketing Knowledge: Strong understanding of digital marketing principles and strategies - Analytical Skills: Ability to analyze data and metrics to inform decision-making and improve campaign ...

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 ...