1 to 25 of 34 Contract JavaScript Jobs in London

Experience with FastAPI , Flask , or Django REST API and Microservices development Object-Oriented Programming (OOP) SQL and database design Frontend Strong knowledge of React.js JavaScript (ES6+), TypeScript HTML5, CSS3 Redux, React Hooks Responsive UI development Databases PostgreSQL, MySQL, SQL Server MongoDB (preferred) Cloud & DevOps AWS, Azure, or GCP Docker ...

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 ...

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 ...

Platform Technologies AWS SageMaker Python scripting and automation Container orchestration platforms Infrastructure security and hardening Cloud networking and connectivity Application Support Knowledge C# .NET JavaScript React REST APIs Microservices architecture COTS Product Experience Supporting Commercial Off-The-Shelf products within secure environments Troubleshooting intelligence, analytical or partner-provided systems Exposure ...

request and work in an environment with some levels of governance Must have: Web applications expertise using modern web technologies (e.g. CSS, HTML, HTML5, JavaScript, jQuery). Knowledge in UX design principles and ability to apply them when building applications/solutions. Knowledge in database modelling and SQL programming (e.g. ...

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 ...

wider engineering team. Key requirements: 5+ years of software development experience. Strong hands-on Angular experience, ideally with modern Angular versions. Strong TypeScript, JavaScript, HTML and CSS skills. Full Stack development experience with Java, Kotlin or Go. Experience with REST APIs. Strong understanding of data structures and algorithms. Good problem ...

customer. Key Requirements:· Proven Full Stack Development experience in a large, complex organisation· 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 ...

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 ...

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 ...

applications using Python and React.js . Build and maintain REST APIs and microservices . Develop modern, responsive Front End applications using React.js, TypeScript and JavaScript . Work with architects, product owners, DevOps and QA teams to deliver high-quality solutions. Develop cloud-native applications and contribute to CI/… React.js experience. Banking/Financial Services experience - essential. Experience with FastAPI, Flask or Django . Strong experience developing REST APIs and microservices . Strong JavaScript/TypeScript knowledge. React Hooks and Redux. Strong SQL and database experience, ideally PostgreSQL, MySQL or SQL Server . Experience with Docker and Kubernetes . ...

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/ ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

hands-on engineer with strong Python development experience, Bloomberg expertise, and a solid understanding of investment data and financial markets. Key Skills Python Bloomberg JavaScript React Responsibilities Develop, enhance, and maintain investment applications supporting portfolio management and risk functions. Deliver system updates and enhancements across Bloomberg environments. Support and maintain ...

with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Tech Stack Copilot Powerapps Power platform Javascript Role Development and support of low code Business applications using Power platform, M365, C#, JavaScript. You will collaborate closely with business analysts, business users ...

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 ...

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 ...

experience as an Information Security Researcher or Engineer 3+ years' experience manually auditing source code, or strong programming skills in Java, .NET, Python, or JavaScript frameworks Strong understanding of OWASP Top 10, API security risks, and cloud-native application architecture Proven experience in application penetration testing and security code review ...

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 ...

workflows, integrations, automation and platform enhancements. Key skills: 7+ years' hands-on ServiceNow development experience Strong ITSM, Service Catalog, Flow Designer, IntegrationHub & CMDB Advanced JavaScript, Glide APIs, Business Rules & Script Includes Extensive REST/SOAP API, OAuth, JSON/XML & MID Server experience Strong enterprise integration and workflow automation experience ...