26 to 50 of 67 Contract React Jobs

Senior Web Application Developer ASP.NET MVC 5, C#, & React Location: Hybrid 3/4 days p/w onsite West London Must have right to work in the UK and located near West London 3 months contract (extension TBC) Start ASAP (Immediate start/within 2 weeks notice) Inside IR35 … experience with a strong portfolio in bespoke eCommerce and enterprise web applications. * Proven expertise on C#, ASP.NET MVC 5, SQL Server, Entity Framework, and React experience desirable to have HTML5, CSS3, JavaScript, jQuery. * Strong knowledge of Object-Oriented Programming, SOLID principles, and common design patterns. * Experienced in RESTful API design ...

someone who enjoys solving complex technical challenges in a secure, mission driven setting. Key Focus of the Role Building quality, scalable applications using JavaScript , React , and Node.js Designing and deploying cloud native solutions on AWS , leveraging best-practice architectures Implementing and maintaining Infrastructure as Code using Terraform Contributing to secure ...

fine-tuning of foundation models. Technical expertise in languages such as Python and Typescript. Good coding experience with knowledge of CI/CD, GIT, React and testing. Understanding of data privacy, AI ethics, and responsible AI principles. Ability to explain complex AI concepts to non-technical audiences and co-create ...

vector databases (PG vector/croma DB) Hands-on Experience with GenAI Performance Evaluation tools like Pegasus, Ragas, DeepEval Create Conversational Interface with React JS or other Frontend components, Develop and deploy AI agents using LangGraph and ADK, A2A, MCP Strong programming skills in Python (experience with LangChain/LangGraph ...

Senior Full-Stack Web Application Developer Role: Senior Web Application Developer (Full-Stack) Specialism(s): eCommerce, ASP.NET MVC 5, C#, React, Migrations, Microsites, Cloud-Native, HTML5/CSS3/JavaScript, API, CI/CD, IoC Containers, Agile Type: Contract, Daily Rate Duration: 3+ Months Location: London Pay Rate … supporting the journey toward a fully cloud-ready environment. Role Requirements * Develop and maintain complex web solutions using ASP.NET MVC 5, C#, and React * Support migration activities, ensuring clean architecture, scalable design, and efficient implementation * Produce secure, maintainable, scalable, and fault-tolerant code following SOLID principles and OO design patterns ...

Data Engineering expertise Strong experience in Google Cloud Platform (Vertex AI, BigQuery, GKE) Infrastructure as Code using Terraform Proficiency in Python, Java, and ReactJS Experience with frameworks: Quarkus (Java) and Google Agent Development Kit (Python ...

easier to consume for the end users. Understand usability for service capability and automation scope. Change user exp, visualization. Skills mainly include Java technologies, Reactjs with flavor of UX and UI both. ...

from other locations The Role A Front-End Developer (Senior) is expected to have a deep understanding of front-end technologies such as React JS, HTML, CSS, and JavaScript. They should also have experience collaborating with designers and back-end developers and be able to optimize applications for performance … responsiveness. Your Responsibilities Responsible for the front-end build quality of responsive web sites/mobile apps using React native, HTML, CSS and JavaScript under frameworks like React.js aligning with software development standards. Good understanding of DevOps concept and Azure ADB2C. App deployment experience in iOS and Playstore. Understanding ...

week client-side working, with occasional travel required to the customer site. Key Responsibilities: Designing and developing modern, responsive front end interfaces using React and TypeScript Building real-time, data-driven features using technologies such as WebSockets or SignalR Collaborating with full stack engineers, architects, and end users to shape … defence or national security environments is advantageous but not essential Core Front End Skills: Proficiency in JavaScript Experience with front end frameworks such as React, Vue.js, or AngularJS Useful/Modern Front End Engineering Skills: Experience with Node.js (for tooling, SSR, or full stack JavaScript) Understanding of web servers/ ...

work across the full stack, the roles are usually more back end orientated with an element of UI. There is also scope for React cross-training and there may be some React projects too. Exposure to Nodejs is nice to have Good knowledge around AWS is preferred or at least ...

Your new role We are looking for an experienced Full Stack C# Web Developer with strong React expertise to support the development and enhancement of a web-based compliance portal for a key programme. Responsibilities Design, develop, and maintain a secure, scalable compliance web portal Build and enhance back … services using C# and .NET/.NET Core Develop modern, responsive front-end applications using React Integrate front-end components with RESTful APIs Work closely with product owners, business analysts, and QA engineers Ensure high standards of security, performance, and maintainability Contribute to code reviews, documentation, and technical standards What ...

delivering modern, responsive user interfaces, working closely with cross-functional teams and end users. Key Responsibilities Develop modern, responsive front end applications using React and TypeScript Build real-time, data-driven features (e.g. WebSockets/SignalR) Collaborate with engineers, architects, and users to define and deliver requirements Contribute to scalable … solutions Support containerised environments as part of the wider platform Produce clear documentation and prototypes Key Skills Strong JavaScript and front end development experience React (or similar frameworks such as Vue or Angular) Experience building responsive, user-focused interfaces Real-time data handling (e.g. WebSockets) Strong stakeholder engagement and collaboration ...

Build and configure applications using ArcGIS Enterprise components such as ArcGIS Portal, ArcGIS Server, and Data Store. Develop custom tools and widgets using JavaScript, React JS, ArcGIS Experience Builder, and related frameworks. Support GIS data integration, migration, and transformation using tools like FME. Implement server side components and web services … using ESRI technology. Designing of GIS components. Server-side programming in ESRI Experience in ArcGIS Experience builder app with COTS and custom tool through React JS. ArcGIS Portal and ArcGIS Server Proficiency in .Net or Java. Working knowledge of Spatial Indexing. Knowledge and experience with Web Services, Open standards ...

month contract based in London. It is hybrid and will require 2x days onsite per week. Key responsibilities Front end implementation for a React application Visualizing and interacting with scientific data and workflow progression Integration of AI/ML components with frontend, backend, data and compute infrastructure Responsible for high … across allied teams, to build an end-to-end pipeline consuming other data products Basic qualifications: Demonstrated experience with frontend software development (e.g. React) Demonstrated experience of Python development (e.g. using FastAPI) Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience Cloud experience (e.g. ...

month contract based in London. It is hybrid and will require 2x days onsite per week. Key responsibilities Front end implementation for a React application Visualizing and interacting with scientific data and workflow progression Integration of AI/ML components with frontend, backend, data and compute infrastructure Responsible for high … across allied teams, to build an end-to-end pipeline consuming other data products Basic qualifications: Demonstrated experience with frontend software development (e.g. React) Demonstrated experience of Python development (e.g. using FastAPI) Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience Cloud experience (e.g. ...

scalable CRM features across both frontend and backend systems. The ideal Full Stack Software Engineer candidate will have strong experience with TypeScript, Node.js, React, and cloud-based architectures, along with experience working in microservices environments, building APIs, and managing customer-centric data systems. This position is offered as a remote … Design, develop, and maintain CRM platform features across the full stack Build scalable backend services using Node.js and TypeScript Develop modern user interfaces using React and Next.js Design and maintain relational and document databases (PostgreSQL, MongoDB) Build secure and performant RESTful APIs Implement scalable backend services and microservices Optimise application ...

Robert Half Technology are assisting a market leading financial services organisation to recruit a React Developer on a contract basis . Hybrid working - London based. Role * The React Developer will be responsible for designing, building, and maintaining high-quality front-end applications using React and TypeScript within a secure, data …/CD pipelines, testing strategies, and overall engineering best practices. * Provide clear technical documentation and contribute to front-end architectural decisions. Profile * The React Developer will have strong commercial experience building modern React and TypeScript applications in financial services or similarly regulated environments. * Proven experience delivering complex, enterprise-grade front ...

core stack is Java-first, with increasing importance on Python-based services (including orchestration, agents, and modern AI/LLM integrations), alongside a strong React frontend. This is not a leadership/management role, but you must be able to operate at senior level, challenge decisions, and drive engineering quality. … requirement, must be recent - ideally last 12-24 months) Python (recent hands-on experience essential - services, orchestration, or AI/LLM work highly valued) React (strong frontend experience is critical) Experience building and delivering end-to-end full stack applications (frontend, backend, APIs) Plus exposure to: Cloud platforms (AWS preferred ...

features across secure communications and decision support platforms Building and maintaining backend services using C# and related technologies Developing and enhancing user interfaces using React Contributing to security focused system design when working with highly sensitive data Taking ownership of work items, collaborating closely with engineers, product specialists and stakeholders … contributing to mentoring and technical discussions About You Strong commercial experience in backend development using C# and the .NET ecosystem Frontend development experience using React or a similar modern JavaScript framework Solid understanding of software engineering fundamentals and agile delivery practices Experience working in live production environments, ideally within regulated ...

into intuitive, high-performance analyst experiences. The Tech Ecosystem You will be working in a modern, distributed environment that prioritizes engineering excellence: Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud … improvements. Who You Are The Professional: You have 4+ years of experience building production-grade web applications. The Specialist: Deeply proficient in TypeScript and React . A willingness to work within a Micro-frontend architecture is essential. The Collaborator: You enjoy working closely with Product, Design, and Compliance teams ...

into intuitive, high-performance analyst experiences. The Tech Ecosystem You will be working in a modern, distributed environment that prioritizes engineering excellence: Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud … improvements. Who You Are The Professional: You have 4+ years of experience building production-grade web applications. The Specialist: Deeply proficient in TypeScript and React . A willingness to work within a Micro-frontend architecture is essential. The Collaborator: You enjoy working closely with Product, Design, and Compliance teams ...

Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high-performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) Design … develop responsive, modular, and accessible user interfaces using React Build reusable React components, shared libraries, and frontend design systems Manage complex client-side state and optimize frontend performance Integrate frontend applications with REST APIs Ensure high standards of UX, accessibility, and cross-browser compatibility Backend (Python) Design and implement scalable ...

Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high-performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) · Design … develop responsive, modular, and accessible user interfaces using React · Build reusable React components, shared libraries, and frontend design systems · Manage complex client-side state and optimize frontend performance · Integrate frontend applications with REST APIs · Ensure high standards of UX, accessibility, and cross-browser compatibility Backend (Python) · Design and implement scalable ...

Full Stack Engineer who's excited to build secure, high-performance products used at scale. You'll work across Kotlin backend services and React/TypeScript frontends, while helping shape modern CI/CD pipelines and internal AI tooling. What you'll be doing Build and scale backend services using … Kotlin & JVM frameworks Develop sleek, responsive UIs with React + TypeScript Own code from idea production with CI/CD pipelines Contribute to cutting-edge agentic AI tooling for engineering teams Collaborate closely with engineers, product, and stakeholders Debug, optimise, and continuously improve live systems Essential experience Experience with Kotlin ...

frontend development across key products, working closely with compliance stakeholders to design and deliver intuitive, scalable solutions. Build and enhance modern web applications using React and TypeScript Work across a micro-frontend architecture Contribute to end-to-end feature development, from design through to deployment Collaborate with cross-functional teams … platform Challenge and improve existing processes and workflows Work with APIs (GraphQL & REST) to integrate backend services Skills & Experience: Essential: Strong frontend expertise with React & TypeScript Experience with GraphQL and REST APIs Background working in product-focused environments Experience in modern engineering practices (CI/CD, cloud environments, etc.) Ability ...