1 to 25 of 30 Contract React Jobs in London

backend and DevOps teams across the full delivery lifecycle Required Experience Strong experience in UI or Frontend Architecture within complex environments Expertise in React, JavaScript (ES6+), TypeScript, HTML5 and CSS3 Experience designing SPA or micro-frontend architectures Strong understanding of API integration (REST, API gateway patterns, BFF) Experience working ...

performance and observability* Experience with monitoring tools such as CloudWatch and/or Datadog* Experience with testing strategy and LLM evaluation Nice to have: * React, Next.js and TypeScript experience* Experience delivering AI-enabled user experiences, such as chat-based interfaces or intelligent workflows* Familiarity with GenAI concepts, including LLMs ...

Cleared freelancer needed with a frontend focus to build modern, scalable web applications, with some backend/API work. Tech & Skills JavaScript/TypeScript, React/Angular/Vue Node.js, REST/GraphQL APIs HTML, CSS, responsive & accessible design Testing (Jest/Cypress), CI/CD, Git Experience integrating APIs ...

/CD and version control. Experience working in Agile environments. Previous Public Sector project experience. Desirable Skills Experience with modern frontend frameworks such as React, Angular, or Vue. Knowledge of serverless architectures and cloud-native development. Familiarity with DevOps practices and infrastructure as code. Experience working on government or regulated ...

development team Strong Java development skills, including experience with multi-threaded and mission critical applications Exposure and knowledge of front-end technologies such as React and Angular Experience with relational database technologies, including SQL proficiency Embed quality gates and parallelized execution in CI/CD ; reduce build times while increasing ...

engineers, establish technical standards, and contribute to capability development across the team. Required Skills & Qualifications: Strong hands-on experience in front-end & application development (React.js/Next.js), backend development (Java or Python), and building secure, scalable APIs and distributed applications. Expertise in data engineering & platforms including SQL, data warehousing ...

configuration management (Ansible) Experience operating and administering Linux distributions (RHEL, Ubuntu) Familiarity with cloud-native services (Azure AKS, ACR) Exposure to frontend frameworks (React, Vue.js) Operations and technical troubleshooting experience Candidates will ideally show evidence of the above in their CV in order to be considered. Please be advised ...

financial services client who are actively seeking multiple Frontend Developers for a brand-new business-critical project. What you'll need to succeed Extensive React/Typescript development experience, ideally within a highly agile environment. Fullstack development experience. Strong experience with AWS and Kubernetes. Strong Terraform experience. Good knowledge ...

office Duration - Initially 6 months Rate - £550-£650/day Inside IR35 via Umbrella Skills and Experience Required TypeScript or Javascript Next.js or React AWS Terraform Experience providing feedback to engineering teams via code review Exposure to a wide range of languages, frameworks, and cloud technologies Core Competencies: Highly proactive ...

assessment. Core skill requirements: Strong development capabilities in full-stack web applications at an enterprise level are a must-have. Proficiency in Python and React is a must-have. Chat or Messaging application integration is a must-have Experience in Ed-Tech, Education, or Consultancy would be highly desirable. Experience ...

life customers account management i.e. chat bots, live chat and comprehensive help articles. The team is based across London, Lisbon and Prague. Skills : React.js, Next.js, Unit testing, Agile, Typescript, Jenkins, Concource CI, TDD, Node.js, GraphQL, Microsoft Playwirght All profiles will be reviewed against the required skills and experience. ...

production experience building high-scale services using Java, Kotlin, or Go . Modern Frontend Skills: Hands-on experience building clean, intuitive internal tooling using React and TypeScript . System Design & Integrity: Deep understanding of API design, backward compatibility, and data modeling for complex, versioned systems where stability is critical. Data ...

Developer - (React, TypeScript & .NET) - Hybrid - Outside IR35 We are looking for a Web Developer with strong React and TypeScript experience and some knowledge of C# and .NET to join a development team on an initial 12-month contract. Responsibilities Develop and maintain web applications using React and TypeScript. Contribute … stand-ups, sprint planning, estimation sessions, and retrospectives. Support DevOps pipelines and deployment activities. Attend team meetings as required. Required Skills Commercial experience with React and TypeScript. Knowledge of C# and .NET. Experience with Git and source control. Understanding of automated testing practices. Experience working within an Agile environment. Good ...

using Figma. Define and maintain a design system aligned with accessibility and performance standards. Collaborate with developers to ensure design-to-code alignment for React (TypeScript) components. Document research findings, design decisions, and UX guidelines in Confluence. Advocate for inclusive design and compliance with WCAG accessibility standards. Essential Skills Design ...

Java based microservices, applying test driven development and following established engineering standards. You'll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React and AWS. You'll contribute to CI/CD pipelines, ensure non-functional requirements are met and collaborate with colleagues across engineering, analysis and design. …/CD pipelines (Jenkins or similar) Working in agile, multi-disciplinary teams Desirable experience Kafka Liquibase or similar migration tooling Swagger/OpenAPI Gradle React TypeScript Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built ...

false positives. Ability to work effectively within agile, cross-functional teams. Required Technical Skills TypeScript - Extensive experience developing within strongly typed TypeScript codebases. React - Strong knowledge of React and modern front-end development practices, with a focus on performance optimisation, scalability, and application stability. SQL - Proven experience writing and optimising ...

spearhead the development of the Single Dealer Platform within our Electronic Fixed Income Currencies business. The ideal candidate will have deep expertise in React, RxJS, and modern UI frameworks, combined with strong leadership and architectural skills to deliver high-performance, scalable, and intuitive trading interfaces. Key Responsibilities: · Lead UI Development … latency, high-frequency trading environments. · Innovation : Stay ahead of emerging technologies and propose improvements to enhance platform capabilities. Strong proficiency in React (Hooks, Context API, Redux or similar state management); RxJS for reactive programming and event-driven architectures Core Expertise: o Strong proficiency in React (Hooks, Context API, Redux ...

delivery team, helping build, improve and support a modern Azure-based platform. You will be: Building new full-stack features using Node, TypeScript and React Resolving defects and supporting production releases Working on secure, cloud-based services hosted on Azure Contributing to CI/CD pipelines, automated testing and DevOps … test teams Supporting documentation, troubleshooting and continuous improvement You will need: Active SC clearance Strong full-stack software engineering experience Commercial experience with Node, React and TypeScript Azure cloud delivery experience Good understanding of CI/CD, automated testing and DevOps ways of working Experience working in agile, multidisciplinary teams ...

Full Stack Developer - Active SC, C#, React, SQL Up to £410pd (Inside IR35) Primarily Remote 5 months initially My client is an instantly recognisable consultancy who are seeking a Full-Stack .NET Developer to join a small, collaborative team delivering secure, on-prem enterprise applications. Key Requirements: Proven expertise … C# and .NET Framework, with active Security Clearance (SC). Strong front-end experience using React and TypeScript, alongside ASP.NET MVC and/or WebForms. Demonstrated experience building and consuming RESTful APIs within microservices architectures. Solid background working with SQL Server or other relational databases. Experience writing and maintaining automated ...

modern platform that leverages large language models (LLMs) and advanced AI capabilities. Key Responsibilities * Build, enhance and maintain a full-stack application using Next.js, React and TypeScript. * Develop and optimise backend services and data models using PostgreSQL and Prisma. * Work closely with AI engineers and evaluation teams to translate data … platform. Essential Skills & Experience * Minimum 5 years' experience in full-stack software engineering. * Strong commercial experience with: o TypeScript o Next.js o React o PostgreSQL o Prisma ORM * Experience working with cloud platforms and infrastructure-as-code. * Hands-on experience with: o Google Cloud Platform (GCP) o Terraform o Docker ...

Title: Senior Front-End Developer (React/TypeScript/Python/Azure) Role Type: Contract Contract Length: 3 months initial Location: UK based (Onsite once a week in London) Summary Our client is looking for a Senior Front-End Developer to build modern, secure and high-performing user interfaces within … full-stack Azure environment. This role is ideal for someone with strong React, TypeScript and Next.js experience who can turn large API-driven data sets into intuitive, scalable and user-friendly front-end solutions. Responsibilities Build responsive, accessible and performant front-end applications using React, TypeScript and Next.js. Integrate with ...

Shipping production software with 3 to 5 of those in a tech lead or staff engineer role - Python and TypeScript/Node, with solid React/Next.js and NestJS/FastAPI experience - PostgreSQL, including schema design, query performance, ETL/ELT, and analytical workloads at scale - LLM/AI features … Please apply below. Tech Lead, Technical Lead, Staff Engineer, Principal Engineer, Private Credit, Private Markets, Capital Markets, AI Platform, Analytics Platform, Python, TypeScript, Node.js, React, Next.js, NestJS, FastAPI, PostgreSQL, pgvector, LangChain, LangGraph, LiteLLM, AWS, LLM, Fintech, Greenfield, Remote, Hybrid/Remote, Contract ...

Shipping production software with 3 to 5 of those in a tech lead or staff engineer role - Python and TypeScript/Node, with solid React/Next.js and NestJS/FastAPI experience - PostgreSQL, including schema design, query performance, ETL/ELT, and analytical workloads at scale - LLM/AI features … Please apply below. Tech Lead, Technical Lead, Staff Engineer, Principal Engineer, Private Credit, Private Markets, Capital Markets, AI Platform, Analytics Platform, Python, TypeScript, Node.js, React, Next.js, NestJS, FastAPI, PostgreSQL, pgvector, LangChain, LangGraph, LiteLLM, AWS, LLM, Fintech, Greenfield, Remote, Hybrid/Remote, Contract ...

Azure services , including Service Bus, API Management (APIM), Function Apps and Logic Apps Supporting pro-code extensibility using .NET and JavaScript , with exposure to React and Fluent UI for PCF controls (desirable) Engaging with emerging technologies such as Code Apps, AI-assisted development and 'vibe coding' approaches (desirable) Actively working … experience Strong expertise in Model-Driven Apps , with solid experience in Canvas Apps and PCF Good understanding of JavaScript-based frameworks used in PCF (React, Fluent UI - nice to have) Strong integration experience across Azure services, APIs and secure data exchange Experience working in Agile delivery teams with modern DevOps ...

approach. Analyze the existing manual RFP workflow and identify opportunities to streamline, simplify, and automate key steps. Design and develop a functional prototype using React, Node.js, and TypeScript to demonstrate proposed automation solutions. Iterate on the prototype based on feedback from stakeholders, refining functionality, usability, and performance. Scale the prototype … technical designs, implementation details, and user-facing aspects of the solution to support ongoing maintenance and enhancements. Essential Skills Strong hands-on experience with React for building modern, responsive user interfaces. Proficiency in Node.js for developing scalable server-side applications and APIs. Solid knowledge of TypeScript ...