226 to 250 of 999 React Jobs in London

Principal Engineer (Platform Architecture)

Location
Greater London, England, United Kingdom
should have strong experience with most of them or equivalent technologies. Core Languages & Frameworks Python (Flask, SQLAlchemy, NumPy, Pandas) for services and analytics React, Typescript, Redux for the front end Cloud & Infrastructure AWS (ECS, Lambda, RDS, S3) Docker Linux Data, Messaging & Caching MySQL RabbitMQ Redis Tooling & DevOps GitLab for source ...

Product Engineering - Team Lead

Location
Greater London, England, United Kingdom
high‐data‐volume systems (e.g., trading dashboards, live data feeds, streaming analytics, order management systems). Strong command of the modern frontend stack: TypeScript, React, Node.js — and the ability to evaluate and adopt new technologies as needed. Hands‐on server‐side experience: building and maintaining backend services, APIs, and data ...

Principal Software Engineer - C#

Location
City Of 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 Software Engineer - Java Full Stack

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
related discipline and extensive applied experience.Strong hands-on experience with Java and modern application development frameworks.Deep experience designing and building modern user interfaces using ReactJS or similar technologies, including micro-frontend architectures, component-based design systems, and scalable frontend engineering patterns.Experience working with high-volume data processing, analytics or reporting ...

Lead Software Engineer - Python / AI - Athena Core - Vice President

Location
Greater London, England, United Kingdom
Skills: Strong software engineering fundamentals and passion for developer tooling Proficiency in multiple programming languages, with emphasis on Python; familiarity with TypeScript/React and SQL for full stack development Solid understanding of testing, reliability, and maintainable system design Ability to operate independently in ambiguous problem spaces and collaborate effectively ...

Senior Software Development Engineer

Hiring Organisation
Expedia
Location
London, United Kingdom
Salary
£ 80 K
communicate the trade‐offs between them for scale, reliability, and speed of delivery.Hands on experience with Kotlin for server side, or/and React and Typescript for the frontend. Proven track record of refactoring and modernising legacy codebases and architectures, improving performance and maintainability while minimising risk and customer impact.Track ...

Technical Lead

Location
Wimbledon, England, United Kingdom
bring experience of: Leading engineering teams and delivering complex digital products. Architecture and technical strategy in modern technology environments. Technologies such as TypeScript, React, Node.js, Go or Rust. AWS, cloud-native platforms and Infrastructure as Code. Docker, Kubernetes and CI/CD practices. Microservices, distributed systems and modern databases. Coaching ...

Senior Software Development Engineer

Location
Greater London, England, United Kingdom
communicate the trade‐offs between them for scale, reliability, and speed of delivery. Hands on experience with Kotlin for server side, or/and React and Typescript for the frontend. Proven track record of refactoring and modernising legacy codebases and architectures, improving performance and maintainability while minimising risk and customer ...

Staff Full-Stack Software Engineer, (Forward Deployed), GPS

Location
Greater London, England, United Kingdom
Computer Science or equivalent deep industry experience in architecting complex, distributed systems. 10+ years of full‐stack expertise across Python, Node.js, and React, with a proven track record of designing high‐scale architectures on Kubernetes and global cloud infrastructures (AWS/Azure/GCP). Expert ability to design ...

Front End Engineer

Hiring Organisation
Interactive Brokers
Location
London, United Kingdom
Salary
£ 80 K
strong emphasis on single-page application (SPA) development Deep, production-level experience with at least one major JavaScript framework — Vue3 (ideally), Angular or React; experience with more than one is a strong plus Strong TypeScript skills; able to design and build robust, well-typed libraries and components Solid command ...

Staff Full-Stack Software Engineer, (Forward Deployed), GPS

Hiring Organisation
Scale AI
Location
London, United Kingdom
Salary
£ 80 K
Computer Science or equivalent deep industry experience in architecting complex, distributed systems.10+ years of full-stack expertise across Python, Node.js, and React, with a proven track record of designing high-scale architectures on Kubernetes and global cloud infrastructures (AWS/Azure/GCP).Expert ability to design and oversee production ...

Product Engineering - Team Lead

Location
Greater London, England, United Kingdom
high‐data‐volume systems (e.g., trading dashboards, live data feeds, streaming analytics, order management systems). Strong command of the modern frontend stack: TypeScript, React, Node.js — and the ability to evaluate and adopt new technologies as needed. Hands‐on server‐side experience: building and maintaining backend services, APIs, and data ...

AI Engineer

Hiring Organisation
IFS
Location
London, United Kingdom
Salary
£ 80 K
validate logic)Fullstack Product EngineeringBuild end‐to‐end product features spanning:Backend services (Python/TypeScript)APIs (REST/GraphQL/FastAPI)Frontend experiences (React)Create human‐in‐the‐loop interfaces for AI systems (review, override, explainability)Collaborate closely with Product and Design to ship usable, explainable AI featuresPlatform & Engineering ...

Full Stack Engineer

Location
Greater London, England, United Kingdom
APIs and their data models. Solid working knowledge of the frontend stack: JavaScript and TypeScript, the Node.js/npm ecosystem, and a modern framework — React.js ideally, though experience with a comparable one is fine (please feel free to share any available examples of applications you built). Experience in client ...

Senior Full Stack Engineer – Industrial Sustainability Reporting Platform

Hiring Organisation
IFS
Location
London, United Kingdom
Salary
£ 80 K
experience in full stack software engineering, with proven capability across both front-end and back-end developmentSolid experience with modern front-end technologies, particularly React or similar frameworksStrong back-end engineering experience, ideally including GoLang or comparable general-purpose programming languagesExperience designing and building scalable APIs, services, and cloud-native ...

Lead Software Engineer - Python / AI - Athena Core - Vice President

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
Capabilities, and Skills:Strong software engineering fundamentals and passion for developer toolingProficiency in multiple programming languages, with emphasis on Python; familiarity with TypeScript/React and SQL for full stack developmentDemonstrated experience leading effective use of enterprise-authorized AI-assisted software development tools within the work environment (e.g., for coding ...

Lead Software Engineer

Location
Greater London, England, United Kingdom
software engineering experience in the following areas: Experience implementing distributed systems Strong experience with Python and JavaScript Experience building frontend applications using TypeScript and React Experience with various database technologies and query languages (we use Snowflake, MySQL, Neo4j, Kafka, OpenSearch, and more) Experience designing microservices and APIs using REST, HTTP ...

Software Development Lead, Data and Analytics

Hiring Organisation
FTI Consulting
Location
London, United Kingdom
Salary
£ 80 K
applications using a continuously evolving toolkit. Recent solutions have integrated with bespoke AI models, shipped using containerization, and leveraged technologies such as Angular, React, NestJS, TypeScript, Python, Django, Laravel and a wide range of AWS and cloud services. You will have a direct impact on driving innovation by promoting ...

Full Stack Engineer

Location
Greater London, England, United Kingdom
delivered via tasks. Collaborating as part of a cross‐functional team of backend, front‐end, and full‐stack engineers. Essential Experience with React and TypeScript. Proficiency in writing modern web applications. Experience writing REST APIs and services. A keen eye for detail and a passion for writing clean, readable, properly ...

Senior Python Platform Engineer

Location
Greater London, England, United Kingdom
working with data in Python, across data engineering and analytics. Background in data science, quantitative finance, or risk analytics. Proficiency in TypeScript/JavaScript (React preferred). Experience with Kubernetes and containerization. Experience with AWS or another public cloud provider. Assessment Criteria You may be assessed on key critical skills ...

Software Engineering Lead

Hiring Organisation
Elliptic
Location
London, United Kingdom
Salary
£ 80 K
mentoring a team of 3–5 software engineers for at least 2 years.Strong experience with TypeScript across backend (Node.js/NestJS) and frontend (React/Redux) development.Proven track record of architecting scalable UI applications and APIs with ability to make informed decisions about technology choices and architectural patterns.Experienced in leading ...

Senior Software Engineer - London

Hiring Organisation
Perk
Location
London, United Kingdom
Salary
£ 80 K
booking and managing business travel. As a Senior Software Engineer, this position involves:Product development in Python/Django and/or React of a travel-related web-based productIntegrations between our product to 3rd party APIsSystem architecture design, implementation, and testingWork in an Agile environment with strong attention ...

Senior Systems Engineer

Location
London, United Kingdom
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 Engineer, AI Platforms

Location
Greater London, England, United Kingdom
BRING:*** 5+ years of software engineering experience, including technical leadership.* Expertise in Java/Kotlin, Spring Boot, REST APIs, and MongoDB.* Experience with ReactJS, JavaScript, and TypeScript.* Strong understanding of secure coding (e.g., OWASP principles).* Strong experience with CI/CD, Git workflows, automated testing.* Experience leading AI feature ...

Lead Engineer, AI Platforms

Hiring Organisation
London Stock Exchange Group
Location
London, United Kingdom
Salary
£ 80 K
monitoring.WHAT YOU'LL BRING:5+ years of software engineering experience, including technical leadership.Expertise in Java/Kotlin, Spring Boot, REST APIs, and MongoDB.Experience with ReactJS, JavaScript, and TypeScript.Strong understanding of secure coding (e.g., OWASP principles).Strong experience with CI/CD, Git workflows, automated testing.Experience leading AI feature development ...