251 to 275 of 999 React Jobs in London

Senior Systems Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
Pipelines Datadog C#, .NET Core/.NET Framework (being phased out) REST APIs, Hangfire, MediatR, Entity Framework, Mass Transit, xUnit/NUnit Node, Next.js, React PowerShell, Bash What you'll do Lead the design, build, and operation of cloud infrastructure, platform services, and ops tooling that underpin our live service ...

Lead AI Software Engineer

Hiring Organisation
Vodafone
Location
London, United Kingdom
Salary
£ 80 K
engineering productivity.Who you areSignificant experience delivering production-grade software within complex engineering environments.Strong hands-on expertise in Java and Spring Boot, with experience in React or Angular.Proven experience designing and implementing RESTful APIs, microservices, integrations, platform services, and digital applications.Strong understanding of cloud-native architectures, distributed systems, containerised environments ...

Principal Software Engineer - C#

Location
Greater London, England, United Kingdom
.NET host); comfortable with WebSocket bridges, local service APIs, or IPC mechanisms to connect web UIs with native desktop applications.* Sufficient front-end literacy (React, TypeScript, Node) to make architectural decisions, review code, and collaborate effectively with dedicated front-end teams.* Demonstrated ability to leverage coding agents in spec-driven ...

Lead AI Software Engineer

Hiring Organisation
Vodafone
Location
London, UK
Employment Type
Full-time
areSignificant experience delivering production-grade software within complex engineering environments. Strong hands-on expertise in Java and Spring Boot, with experience in React or Angular. Proven experience designing and implementing RESTful APIs, microservices, integrations, platform services, and digital applications. Strong understanding of cloud-native architectures, distributed systems, containerised environments ...

Lead Software Engineer - Python / Athena Trade and Risk Services

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
advanced applied experienceStrong software engineering fundamentals and a genuine passion for developer and operations toolingProficiency in Python, with working knowledge of TypeScript/React for web tooling and SQL for full-stack workProficient user of enterprise-authorized AI-assisted development tools (coding, review, test acceleration, troubleshooting), with the ability ...

Senior Product Engineer

Hiring Organisation
Zapp
Location
London, United Kingdom
Salary
£ 100 K
knowNestJS. Our backend is a NestJS service, and you'd feel at home when features need backend work.React Native. Our apps run on React Native and Expo. You'll touch them when features cross stack boundaries.GraphQL Federation. We run a federated gateway across multiple subgraphs, and federation experience makes schema ...

Senior Software Engineer, SCRIBE

Location
Greater London, England, United Kingdom
substantial experience developing Python web applications and backend services using frameworks such as FastAPI or Flask, alongside modern JavaScript or TypeScript frameworks such as React or Vue. You will be confident designing RESTful APIs and secure, scalable cloud infrastructure, ideally on AWS, and integrating AI and data-processing services into ...

Lead AI Software Engineer London, United Kingdom Value Stream Engineering Posted 12 hours ago

Location
Greater London, England, United Kingdom
## * Significant experience delivering production-grade software within complex engineering environments.* Strong hands-on expertise in **Java and Spring Boot,** with experience in **React or Angular.*** Proven experience designing and implementing RESTful APIs, microservices, integrations, platform services, and digital applications.* Strong understanding of cloud-native architectures, distributed systems, containerised environments ...

Full Stack Web Developer - Website Development (mid-level)

Hiring Organisation
Moneycorp
Location
London, United Kingdom
Salary
£ 80 K
maintenance of the Moneycorp Website. Manage and update website templates, components, and landing pages.Build, test, and deploy new front‐end features using HTML, CSS, REACT, JavaScript, following responsive design best practices.Support back‐end development including API integrations, data handling, and server-side logic.Ensure cross-browser compatibility, accessibility compliance, and optimisation ...

Head of Data Science (12m fixed-term contract)

Location
Greater London, England, United Kingdom
μService, Spring Boot with Spring Cloud, Dynamodb, Terraform, Docker, AWS Fargate, Datadog, Opslevel, and TeamCity. Frontend and Mobile: TypeScript, CSS-in-JS (Styled Components), React, Redux, Redux Hooks, and other modern state management libraries. Kotlin on Android and Swift on iOS. Data: SQL, Python, Snowflake, dbt, Airflow & Looker ...

Principal Software Engineer - C#

Hiring Organisation
Liquidnet
Location
London, United Kingdom
Salary
£ 100 K
custom .NET host); comfortable with WebSocket bridges, local service APIs, or IPC mechanisms to connect web UIs with native desktop applications.Sufficient front-end literacy (React, TypeScript, Node) to make architectural decisions, review code, and collaborate effectively with dedicated front-end teams.Demonstrated ability to leverage coding agents in spec-driven development ...

Principal Software Engineer - C#

Hiring Organisation
Liquidnet
Location
London, UK
Employment Type
Full-time
.NET host); comfortable with WebSocket bridges, local service APIs, or IPC mechanisms to connect web UIs with native desktop applications. Sufficient front-end literacy (React, TypeScript, Node) to make architectural decisions, review code, and collaborate effectively with dedicated front-end teams. Demonstrated ability to leverage coding agents in spec-driven ...

Full Stack Software Engineer - Application Development

Hiring Organisation
Palantir Technologies
Location
London, United Kingdom
Salary
£ 80 K
technical usersCreating low-code/no-code WYSIWYG tools, which enable application builders within Foundry to build products for their usersTechnologies We UseTypescript, React, and GQL are central to our frontend development.Blueprint as a re-usable front end component library.A combination of open-source and internal technologies that suit ...

Sales Engineer - Italian Speaking

Hiring Organisation
Algolia
Location
London, United Kingdom
Salary
£ 80 K
consultant, PM), ideally in the SaaS spacePrevious software development experience in one or more of the following areas: Front End: JavaScript, TypeScript, React, Back-End: Java, Ruby, Go, Node, Python, Swift/Objective-CExperience with data formats and data transformationGreat oral and written communication skillsSuperior organisational skills working with multiple ...

Senior Front End Software Engineer - Application Development

Hiring Organisation
Palantir Technologies
Location
London, United Kingdom
Salary
£ 80 K
Foundry.Engaging with signal directly from our forward deployed engineers and deployment strategists to rapidly evolve our product to meet real world requirements.Technologies We UseTypescript, React, and GQL are central to our frontend development.Blueprint as a re-usable front end component library.A combination of open-source and internal technologies that suit ...

Senior Front End Software Engineer - Application Development

Hiring Organisation
Palantir Technologies
Location
London, UK
Employment Type
Full-time
with signal directly from our forward deployed engineers and deployment strategists to rapidly evolve our product to meet real world requirements. Technologies We UseTypescript, React, and GQL are central to our frontend development. Blueprint as a re-usable front end component library. A combination of open-source and internal technologies ...

Senior Software Engineer | API Enterprise | Full-Stack

Location
Greater London, England, United Kingdom
design fundamentals and system design are core to how you work. Roughly 80-90% of the work is backend; working on the frontend (React/TypeScript) is a welcome plus, not a requirement. Enterprise Platform Fluency: You bring hands-on experience with the building blocks of modern enterprise APIs ...

Senior Software Engineer | API Enterprise | Full-Stack

Hiring Organisation
DeepL
Location
London, United Kingdom
Salary
£ 80 K
design fundamentals and system design are core to how you work. Roughly 80-90% of the work is backend; working on the frontend (React/TypeScript) is a welcome plus, not a requirementEnterprise Platform Fluency: You bring hands-on experience with the building blocks of modern enterprise APIs (MCP, CLIs ...

Senior Fullstack Engineer (Python + React.js)

Location
Greater London, England, United Kingdom
schemas to improve performance, scalability, and reliability. Implement security features, including authentication and authorization using industry-standard practices. Develop and maintain web interfaces using ReactJS Implement and maintain state management using tools such as Redux or React Query Collaborate with frontend developers to ensure efficient API integration and a seamless ...

Senior Full Stack Developer | C#.NET, React | London

Hiring Organisation
Source Group International
Location
London, United Kingdom
Salary
> £ 150 K
technical direction.Key Responsibilities Design, develop, test, and maintain scalable services using C#/.NET (ASP.NET Core) and RESTful APIs.Build responsive, accessible user interfaces using React, TypeScript, HTML, and CSS.Implement secure authentication/authorisation (e.g., OAuth2/OIDC) and follow secure coding practices.Optimise performance, reliability, and observability (logging, metrics, tracing).Work … Extensive commercial experience in full stack development with C#/.NET and React.Strong knowledge of .NET Core, dependency injection, asynchronous programming, and API design.Strong React experience including state management and modern front-end tooling.Solid understanding of software design principles, patterns, and clean code practices.Experience with SQL databases, ORM tooling (e.g. ...

Senior .NET Developer — Trading IT Platform

Location
Greater London, England, United Kingdom
Trading Ltd is seeking a Senior .NET Developer to design, build, and maintain multi-asset class applications. The role focuses on Angular front-end (React acceptable) with C# .NET Core backend, Web API, and strong UX considerations. You will collaborate with IT and business teams, contributing to architecture, testing ...

Senior Software Engineer — Scale AI Platform with Autonomy

Location
Greater London, England, United Kingdom
stack and owning projects from design through deployment. You should have strong full-stack experience, fluency in Python or TypeScript, and experience with React, Kubernetes, and GCP. This role offers a high-trust culture and meaningful impact on AI data workflows across Europe. #J-18808-Ljbffr ...

Software Engineer

Hiring Organisation
LinuxRecruit
Location
London, United Kingdom
Salary
£ 80 K
have experience with microservices, APIs, and all stages of web development. Bonus points if you have experience with GraphQL, Neo4j, Event Driven Architecture, React or AngularJS, Serverless Frameworks, or IoT. As a member of the team, you will benefit from a tailored learning and development programme and gain exposure ...

Graduate Developer (.NET)

Hiring Organisation
Avanti
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £45,000 per annum
range of customers around the world. You will be working with .NET as the main language, however you will also use Java, TypeScript and React for the front-end development and built on Kubernetes. Skills required: Strong .NET experience 2:1 or above in Computer Science degree Desirable: Kubernetes Java ...

Junior .NET Developer

Hiring Organisation
Avanti Recruitment
Location
EC1, Farringdon, Greater London, United Kingdom
Employment Type
Permanent
Salary
£35000 - £45000/annum
range of customers around the world. You will be working with .NET as the main language, however you will also use Java, TypeScript and React for the front-end development and built on Kubernetes. Skills required: Strong .NET experience 2:1 or above in Computer Science degree Desirable: Kubernetes Java ...