1 to 25 of 89 React Jobs in London

Frontend Engineer

Hiring Organisation
Oscar Technology
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£85,000 - £105,000 per annum
inspect data, work with documents and direct AI agents. You'll join the UK core team of around thirty people, working in React, React Native and TypeScript on data-dense enterprise surfaces and AI-assisted workflows. The role sits within a nine-person engineering cohort being hired across front … surfaces, the AI experience, the shared platform and the quality bar. Build advanced forms, analytics dashboards, real-time updates and rich document views in React and React Native with TypeScript. Make dense data usable through grid components such as AG Grid or MUI DataGrid, virtualisation and CSS Grid/Flexbox ...

Fullstack Developer (DV Cleared)

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Permanent
Salary
£70,000
technologies. Strong programming skills in languages such as JavaScript/TypeScript, Java, C#, Python, or Node.js. Experience with front-end frameworks such as React, Angular, or Vue.js. Experience building and consuming RESTful APIs and microservices. Knowledge of software engineering best practices, including testing, CI/CD, and version control ...

Lead Software Engineer

Hiring Organisation
Anson Mccade
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
modern software solutions. Build cloud-first applications using C#/ASP.NET Core and modern web technologies . Develop front-end applications using TypeScript/React, ASP.NET MVC or Blazor . Build resilient microservices and REST APIs , using messaging and cloud-based integration. Design and develop applications across Azure ...

Senior C# .Net Developer

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500/day Umbrella Inside IR35
capability Good stakeholder communication Desirable Banking, Capital Markets or Financial Services Azure Docker/Kubernetes Kafka, RabbitMQ or Azure Service Bus Event-driven architectures React/Angular Cloud-native development Application observability and performance engineering DevSecOps and secure coding Preferred Stack C# | .NET Core/.NET 8 | ASP.NET Core | REST ...

Principal Software Engineer

Hiring Organisation
TPXImpact Holdings Plc
Location
Erith, Kent, South East, United Kingdom
Employment Type
Permanent
Salary
£90,000
focus on large-scale, complex systems. Polyglot engineer comfortable working across multiple languages and frameworks (weve used Python, Java, Kotlin, Node.js, C#, JavaScript, Express, React and Next.js to name a few). Passion for learning new technologies and helping others do the same. Proven track record of leading software architecture ...

Java Developer

Hiring Organisation
Denizns Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400/day
/PostgreSQL, plus MongoDB or another document database Cloud experience (AWS, Azure or GCP) Working knowledge of Linux/Unix Nice to have Angular, React, Node.js or JavaScript Keycloak, Kafka or ActiveMQ, Mockito, Jackson, JAX-RS Experience with high-traffic sites or large data sets How to apply Apply with ...

Senior Python Developer - AI

Hiring Organisation
83zero Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
£70,000
/CD using GitHub, GitLab or Jenkins Agile engineering experience Experience with AI agents, tool calling, embeddings, prompt engineering or LLM observability is beneficial React/TypeScript and Terraform/IaC experience is beneficial Experience taking GenAI POCs into production is highly beneficial Why this role? You'll work ...

Python Developer - AI

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£55,000
/CD using GitHub, GitLab or Jenkins Agile engineering experience Experience with AI agents, tool calling, embeddings, prompt engineering or LLM observability is beneficial React/TypeScript and Terraform/IaC experience is beneficial Experience taking GenAI POCs into production is highly beneficial Why this role? You'll work ...

Lead Software Engineer

Hiring Organisation
Anson Mccade
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
lean Agile team using a scaled Scrum framework Building back-end services in C#/ASP.NET Core, with front-end work in TypeScript/React, ASP.NET MVC or Blazor Building cloud-first applications with strong unit test coverage, continuous delivery and 100% infrastructure-as-code Containerising and deploying applications ...

Lead Software Engineer Product Lead Technologist Business

Hiring Organisation
Anson Mccade
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
lean Agile team using a scaled Scrum framework Building back-end services in C#/ASP.NET Core, with front-end work in TypeScript/React, ASP.NET MVC or Blazor Building cloud-first applications with strong unit test coverage, continuous delivery and 100% infrastructure-as-code Containerising and deploying applications ...

Lead Software Engineer

Hiring Organisation
Anson Mccade
Location
London, United Kingdom
Employment Type
Permanent
Salary
£85,000
lean Agile team using a scaled Scrum framework Building backend services with C#/ASP.NET Core Contributing to frontend applications using TypeScript/React, ASP.NET MVC or Blazor Developing cloud-first applications with strong unit test coverage, continuous delivery and 100% infrastructure-as-code Containerising and deploying applications through Azure ...

Principle Engineer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
absence of other senior engineering leaders. Experience operating within Agile and DevOps delivery models. Desirable Skills: Application & Integration Technologies C# .NET Entity Framework JavaScript React Vue.js Windows Presentation Foundation (WPF) REST APIs Microservices architecture AI & Data Technologies AWS SageMaker Large Language Model (LLM) integrations AI-assisted analytics solutions Python-based ...

Senior Software Engineer

Hiring Organisation
Raytheon
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
need everything) Experience working in an Agile delivery team Java development with Spring Boot Front-end development using modern JavaScript frameworks (e.g., React, Vue) Building enterprise-grade web applications or backend services Cloud & DevOps Experience with cloud platforms such as AWS or Azure Containerisation and orchestration using Docker and Kubernetes ...

Software Engineer III (Java & JavaScript)

Hiring Organisation
Elsevier
Location
Greater London, United Kingdom
Employment Type
Full Time
principles. Ability to work with complex data models. Proficiency in development languages including but not limited to: Java/J2EE, JavaScript, JSP, HTML, Node.js, React, XML, SQL, Windows, UNIX. Experience with Keycloak, Auth0, or another identity provider, including realm configuration, authentication flows, and OIDC client setup. Familiarity with industry best ...

Senior Full Stack Developer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £85,000 per annum
Mentoring engineers Helping drive technical decisions and platform modernisation initiatives. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Node.js and TypeScript development. React and Next.js. GraphQL and REST API development. Microservices and event-driven architectures. Kafka or similar messaging technologies. PostgreSQL, MongoDB and Redis. AWS, Docker ...

Principal Software Engineer

Hiring Organisation
Raytheon
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
improvement within your team Collaborate with your peers on technical direction within your team Requirements/knowledge (you don't need everything) JavaScript frameworks (React, NextJS) TypeScript Python Java REST API development OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible ...

Senior Full Stack Software Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Qualifications Strong related work experience Undergraduate degree or equivalent combination of training and experience. Graduate degree preferred Experience Expertise in frontend technologies (e.g. Vue.js, React) with a strong sense for UI/UX Proven backend experience with Java, ideally with Python and Node.js experience as well, including building distributed microservices ...

Principal Technical Lead

Hiring Organisation
Rail Safety and Standards Board
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
domain modelling, integration patterns, and performance considerations. Experience with Entity Framework Core code-first migrations and data modelling. Strong front-end engineering skills in React and TypeScript, including component architecture, state management, and integration with REST/SignalR backends. Solid understanding of event-driven architectures. Hands-on experience with PostgreSQL ...

Technical Lead

Hiring Organisation
2mrw Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
£90000 - £115000/annum
influence technical decisions, mentor engineers and communicate with senior stakeholders. Technical Stack Experience with a selection of the following: Languages: TypeScript, JavaScript, Node.js, React, Go or Rust. Databases: PostgreSQL, Redis or MongoDB. Cloud & infrastructure: AWS, Docker, Kubernetes, Terraform or AWS CDK. Architecture: Microservices, event-driven systems, serverless and distributed systems. ...

Founding Software Engineer Python - Start-up

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
software from scratch and iterate quickly You have strong technical skills, primarily with Python You have experience with RESTful APIs (they use FastAPI); TypeScript, React and other web technologies such as HTML5, CSS3 would be of benefit You have experience with LLMs and agentic AI, like to get your hands ...

Senior Full Stack Software Engineer - Investment Management

Hiring Organisation
Harvey Nash
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£850 - £915 per day
Qualifications Strong related work experience Undergraduate degree or equivalent combination of training and experience. Graduate degree preferred Experience Expertise in frontend technologies (e.g. Vue.js, React) with a strong sense for UI/UX Proven backend experience with Java, ideally with Python and Node.js experience as well, including building distributed microservices ...

Principal DevOps Engineer

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£644/day £644 p/d Inside IR35
management experience. - Experience supporting secure, business-critical services. - GitLab, PostgreSQL, NGINX, VPN/OpenVPN, Elastic/Kibana and Windows administration. Desirable - C#, .NET, JavaScript, React, Vue.js and microservices. - AWS SageMaker, AI/LLM integrations and Python-based analytics tooling. - Enterprise cloud architecture and secure-by-design principles. - Disaster recovery ...

Senior Java Full Stack Engineer

Hiring Organisation
83zero Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
£70,000
delivery across complex digital transformation programmes. Your Role Design, develop and maintain scalable microservices using Java and Spring Boot. Build responsive web applications using React, JavaScript/TypeScript, HTML and CSS. Provide technical leadership and guidance to development teams, supporting engineers and encouraging best practice. Act as a key point … pipelines, DevOps practices and secure digital platforms. Skills & Experience Strong experience building RESTful microservices using Java and Spring Boot. Frontend development experience with React, JavaScript/TypeScript, HTML and CSS. Proven experience leading or mentoring development teams. Strong stakeholder management and client-facing communication skills. Experience working directly with clients ...

Principal Software Engineer

Hiring Organisation
Pathfinder Business Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£95,000
redesign. Requirements Significant software engineering experience and a track record of delivering large-scale enterprise web applications. Deep experience with Java, Spring Boot, microservices, ReactJS, SQL, MongoDB, DevOps, CI/CD, test automation, and Infrastructure as Code. Strong AWS experience, including the design and deployment of secure, resilient production workloads. ...

Engineering Manager

Hiring Organisation
Intec Select Ltd
Location
London, Billingsgate, United Kingdom
Employment Type
Permanent
Salary
£120000 - £130000/annum
long-term technology vision, while coaching engineers and setting the standard for how software gets built. Tech stack Backend: Python, C# or Go Frontend: React or Angular Cloud: AWS, Azure or GCP What you'll do Lead, coach and mentor software engineers across a range of experience levels ...