1 to 25 of 275 Permanent React Jobs in London

design and performance optimisation Contribute to architectural decisions and UI standards across the platform Required Skills & Experience: Strong commercial experience with TypeScript, React, and modern JavaScript Proven background building data-intensive, low-latency UI applications Experience with AG Grid, complex tables, charting, and data visualisation Solid understanding of UI performance ...

technical or team lead role Strong ownership mindset; you execute and lead from the front Excellent communication and decision-making under ambiguity Node.js, React, and TypeScript Python for AI workflows and automation Microservices and distributed system design Experience with AI/LLM frameworks (e.g. LangChain, OpenAI API, Vertex, LiteLLM ...

energised by pace, change and unconventional problem-solving rather than legacy ways of working. You'll Work With Cross-functional teams spanning: Web Engineering (React/TypeScript) Data Engineering (distributed systems, Spark-based platforms) Data Science & Machine Learning A highly technical CTO who is deeply invested in AI adoption ...

have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management ...

Full Stack Java Software Engineer (React.Js) required for my client in London. Paying £50k-£75k. My client are a growing B2B & B2C technology company. They require a Full Stack Java Software Engineer (React.Js) to join them on a full-time basis. This role is remote but there is expectation … week in London. Required experience Java 18+ experience Spring/Spring Boot PostgreSQL or similar Maven/Gradle REST APIs Microservices React.Js Desirable: Vue.Js experience ...

.NET Developer, .NET 10.0, C# 14, Azure SQL - Investment Bank - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is the world's most respected banking institution. … skill set that encompasses: .NET, .NET Core, C# and Azure SQL. Our client offers training in: .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Node.js, Elasticsearch and MongoDB. This is a truly amazing opportunity to work for a prestigious banking ...

Developer, .NET 10.0, C# 14 - Digital Download Site - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, .NET Developer)With operations in over 20 countries our client has fast become a major … Core, C# and Azure SQL. You will be trained in all aspects of: .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Azure, Bootstrap, Agile and MongoDB. Top performers can expect to receive their first promotion (and pay rise) within 6 months. ...

ready to move forward. Step 2 - Online Training The second step includes a selection of more advanced courses to get you up to speed. React-js JavaScript JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. ...

ready to move forward. Step 2 - Online Training The second step includes a selection of more advanced courses to get you up to speed. React-js JavaScript JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. ...

About The Role Job Level: 10 UK Wide - We work in a hybrid-first way. This role includes regular travel to the London or Leeds offices (on average once per week), and were happy to ...

closely with other developers, UX/UI designers and stakeholders to ensure that our products meet the highest standards. Your expertise in C#, .NET, React and Azure will be crucial in driving our technology initiatives forward. The Senior Developer is a key role within BDO IT's Solutions Development team … track record of successfully building and delivering digital products (web apps and services) to market using agile methodologies. Strong proficiency in C#, .NET, React and Azure. Other development skillsets: JavaScript, HTML/CSS, Azure PaaS (Azure Functions, Azure Logic Apps, Cosmos DB, Azure App Service, Azure Service Bus), ARM/ ...

ready to move forward. Step 2 - Online Training The second step includes a selection of more advanced courses to get you up to speed. React-js JavaScript JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. ...

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 ...

delivery of 2+ substantial features end-to-end (0?production), including architecture decisions Technical Skills: Expert-level TypeScript/JavaScript and modern frameworks (Next.js, React, or equivalent) Strong database skills (Postgres, MySQL) - can design schemas, optimize complex queries, debug performance issues independently Solid DevOps foundation: CI/CD, Docker, cloud ...

including the ones we havent discovered yet) Tech youll work with Python + TypeScript/Node.js (in equal measure) API integrations, ETL, schema validation React/TypeScript, Supabase, AWS Data quality systems and pipeline tooling Whatever the mission requires we optimise for impact, not rigidity What matters most Ownership ...

using LLMs, RAG and agentic workflows GraphRAG/Knowledge Graph expertise - deep knowledge with Knowledge Graphs and vector databases Strong technical fluency - TypeScript/React, Langgraph/Langchain, neo4j, Docker, AWS (SageMaker, Bedrock, Hugging face), to name a few Benefits include: Flexibility - the team works fully remotely, albeit with frequent ...

focus on intuitive front-end creation, robust backend Frameworks and strong data design Lead, a globally dispersed team Experience with AWS, Databricks, DBT, PySpark, React, JavaScript Terraform. Experience with AI/ML/Gen AI/LLM What you need to do now If you're interested in this role ...

them in their key skills, accountabilities and development areas. Desirable Skills: 5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Strong experience in working with Azure (preferably certified) including App Services, Azure Function, Service Bus Experience leading and mentoring … driven development tools such as Claude Experience developing REST API-driven mobile first web applications Experience of frontend application development, with a focus on React.js, Next.js and TypeScript Jira, Bitbucket, Git Flow, Confluence, Azure Devops, Azure App Centre, Service Bus Explorer, SSMS and agile software development process/practices ...

market-making Strong understanding of FX microstructure , order management, or regulatory flows Bonus experience: Spring Boot, Gradle, Solace, FIX, concurrent programming, JVM tuning, React/Vue Ability to utilise AI coding assistants effectively while maintaining code quality Strong communicator with the ability to influence technical and business stakeholders Degree ...

Team Development Architect, design, and deliver scalable, high-performance full-stack solutions. Lead complex feature development across PHP (Symfony/Laravel), JavaScript (Vue.js or React.js or Node.js), and AWS. Own technical direction, architecture decisions, and engineering standards. Manage end-to-end delivery of features from discovery and planning through deployment … observability, and production readiness. Essential Technical Experience: Significant full-stack engineering experience, particularly with PHP (Symfony or Laravel). Strong experience with JavaScript (Vue.js, React.js, and/or Node.js). Solid database expertise across MySQL and PostgreSQL. Hands-on experience with AWS architecture, Docker, and CI/CD automation. Experience ...

Senior UI Developer - React - FX e-trading A leading global investment bank is expanding its Electronic FX franchise and is seeking an Electronic FX UI Specialist to join a high-performing front-office technology team. This role sits within a strategic e-trading function responsible for the front-end experience … proactively to product evolution and platform scalability Essential Experience Strong hands-on experience with HTML5, CSS3, TypeScript Expertise in modern UI frameworks such as React or Vue.js Proven experience building institutional trading tools within financial markets FX trading systems experience highly advantageous Experience with testing frameworks (Jest, Cypress, etc. ...

push the boundaries of how AI can be applied to connectivity challenges. Our stack Backend: PHP (Laravel), Python (for AI/ML workflows) Frontend: React, Next.js (preferred), with flexibility for other modern frameworks Infrastructure: AWS (including Lambda, S3, DynamoDB), DigitalOcean Data: MySQL, Redis, NoSQL stores Dev tools: GitHub, CI/… equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Tags/Skills: Lead Software Engineer, Laravel, React, Python, AWS, AI/ML, n8n, Claude Code, Cursor, Docker, Startups, DevOps ...

About The Role Job Level: 10 UK Wide - We work in a hybrid-first way. This role includes regular travel to the London or Leeds offices (on average once per week), and were happy to ...

solving & communication skills Adaptability/willingness to learn (e.g., Agile) Technical leadership (mentoring, best-practice guidance) Desirable: Experience with modern frameworks and libraries (e.g., React, Node.js, Terraform, Celery) Experience with database schema design and query optimisation Employee Benefits As if contributing to and supporting work that makes life better ...

Java backend (Spring Boot) You have experience with relational databases and SQL query writing You have some front end experience with JavaScript, Angular or React You have a strong understanding of REST APIs and real-time systems You're comfortable working with legacy Ruby You have a strong knowledge ...