1 to 25 of 45 Permanent React Jobs in the City of London

Front-End Developer – React/React Native Up to £65k + Bonus + Equity London, UK (Hybrid 3 days a week in office) An award-winning AI company at the cutting edge of natural language processing and data visualisation is looking for a Front-End Developer to join their growing team. This business works on complex knowledge aggregation and insight … moving – ideal for someone who enjoys working closely with peers and bringing elegant frontend solutions to life. What You’ll Be Doing Developing modern, responsive front-end applications using React.js, React Native, Expo, and Redux Collaborating with the Lead Visual Designer to craft a consistent and intuitive UI/UX Building and maintaining scalable applications hosted on AWS Writing high … version-controlled code using Git Staying up to date with the latest front-end frameworks and practices What experience you will have Strong experience building production-ready apps with React.js and ideally React Native Deep understanding of JavaScript , HTML5 , and CSS3 Experience using Git/GitHub in a team environment Good grasp of cross-browser compatibility, performance optimisation, and responsive More ❯

skills and ability to work in a collaborative team environment. Bachelor’s degree in Computer Science, Engineering, or related field. Preferred Skills: Experience with front-end frameworks such as React . Working knowledge of database technologies: SQL and NoSQL . Exposure to project management and Agile delivery tools (e.g., Jira, Confluence). Understanding of FinOps, SRE practices, and cloud service More ❯

Database development: e.g. SQL, PostgreSQL, SQLAlchemy, data warehousing, ETL pipelines Cloud computing & DevOps: e.g. AWS (EC2, Lambda, S3), Docker, CI/CD, serverless architecture Frontend development: JavaScript/TypeScript, React, Dash, or similar frameworks Backend APIs: FastAPI, Flask, RESTful API design UI/UX design for data tools (e.g. streamlining internal workflows and dashboards) Experience with energy systems modelling/ More ❯

Content Management System (CMS) such as Sitecore, EpiServer, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a unique opportunity to join a More ❯

Developer candidates should be able to demonstrate strong knowledge of: .NET Core/ASP.NET MVC, C# and Azure SQL. Any experience in the following is desirable: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. Training will be provided in any of the More ❯

in a technical field, computer science, software engineering or similar. • 10+ years’ experience in software development, spanning backend, web frontend and large scale systems • In-depth knowledge of Angular, React or NextJS, including state management (NGRX, Redux) • Expert knowledge of Typescript and reactive patterns • Strong understanding of modern Domain Driven Design or similar methodologies • Knowledge of SOLID principles and Test More ❯

mindset Iteration mindset 'If it's not code and documented, it doesn't exist' mindset Bonus points: Experience in deployment and management of streaming data architecture Experience with TypeScript, React, or Node.js Experience maintaining data pipelines written in Java Cybersecurity experience or experience with best practices Benefits: What you build impacts the lives of people around the world Highly collaborative More ❯

team to drive efficiencies in Guidewire estate with multiple products/LOBs. Desirable skills/knowledge/experience: Programming Languages: Java, Python, Pl/sql Development Frameworks: Spring boot, React, Angular Databases: Oracle/Microsoft sql DevOps: Jenkins, Docker, Kubernetes Agile Methodologies: Kanban ,Scrum Monitoring: App dynamics/Splunk Guidewire Ace certified. Rewards & Benefits TCS is consistently voted a Top More ❯

with stakeholders to define technical requirements Ensure best practices, including security by design Be hands on when needed Requirements Back-End: Node.js (preferred), .NET, or Java Front-End: JavaScript, React, TypeScript Degree: 2:1 or higher in a relevant field Methodologies: Agile and Lean Skills: Strong communication, UI/UX awareness, system visualization More ❯

with customers to iterate quickly on feedback What's Required: 3+ years experience developing across the stack in C# or Python Proficiency with a modern JS front end framework (React, Vuejs, Angular) Experience with cloud architecture (Azure, AWS or GCP) In depth knowledge of relational database Degree in Maths, Engineering, Computer Science or related Proven experience building scalable systems/ More ❯

You'll focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for More ❯

Monday to Friday. About you: You 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 skills You are degree More ❯

You'll focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for More ❯

to evolve those pipelines to improve velocity while maintaining quality. Ensure all systems have the appropriate level of automated tests and monitoring. Paid On-Call rota. Qualifications : Knowledge of React/Next.js/Node.js. Required Skills : Expert in creating DRY, documented, maintainable, extendable, secure systems. Experience delivering web apps at scale. Experience building out and maintaining CI/CD pipelines. More ❯

Proven success building and launching products in heavy data platforms (for example, health, finance, insurance etc) Experience with Backend OR AI is a very big bonus! 🛠️ Tech stack: Typescript, React, Python, Jest 📍 Location: London, hybrid role 💰 Salary: £70k - £85k If you have a design background as a Product/UI/UX Designer or a Design Engineer that will be More ❯

You'll focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for More ❯

These roles would be suitable Graduate/Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, JavaScript, PHP, React, React Native, Django, Postgres, Docker and Agile; which might have been acquired as part of your degree course or through a placement year in industry. All Graduate/Junior Developer More ❯

then be serving as an extension of these product teams building microservices and libraries to solve the common needs. Skills: • Experience with Unit Testing • Preferably PyTest • HTML/CSS • React • Typescript • FastAPI framework With a focus within Energy Trading, Oil & Gas, Financial Markets and Commodities, we offer a transparent Recruitment Service that has proven to be reliable and effective for More ❯

and investors in a fast paced, high-impact environment Get a front row seat to cutting-edge innovation across synthetic biology, AI, energy, and more Skills Needed: Skilled in React, Typescript, and modern JavaScript frameworks Proficient in backend language e.g. Python Previous experience within an innovative engineering culture or startup environment Passionate attitude, keen to learn, fail and grow Love More ❯

packing, shipping) Receiving and put-away processes Warehouse layout and slotting Logistics and transportation planning Returns management Barcode and RFID integration Proficiency in coding languages such as TypeScript, JavaScript (React), or Python. An eagerness to adapt and integrate new AI-assisted development tools into your workflow. Experience building customer-facing products. Strong problem-solving skills and attention to detail. Excellent More ❯

and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending December 2024 totaled $13.8 billion. Java Full Stack SME (Java with React) Responsibilities Lead full-stack development initiatives across enterprise-grade applications. Collaborate with cross-functional teams including product, design, and DevOps to deliver scalable and secure software solutions. Drive technical excellence … Agile environment. Skills Required 15+ years of strong experience in full-stack software development. Backend: Proficiency in Java (17+) , Spring Boot , Node.js , and RESTful APIs . Frontend: Expertise in React , TypeScript , HTML5 , CSS3 , and other modern frontend frameworks. DevOps: Familiarity with CI/CD tools such as GitHub , Jenkins , Harness , and containerization using Docker and Kubernetes . Cloud Platforms: Experience More ❯

massive tick-by-tick market data streams Technical Requirements: 4+ years of software engineering experience Proven ability to handle massive real-time data streams Strong expertise in TypeScript and React Deep understanding of JavaScript performance optimisation Experience with memory management and execution strategies What They Offer: Cutting-edge trading technology platform Intellectually stimulating engineering challenges Performance-based bonus Medical insurance More ❯

contributor, directly responsible for your tasks and ready to dive into the work. Candidate must have software development skills with the following programming languages: o Frontend: TS, JS, Next.js, React,js, redux, Java o Backend: TS, JS, Nest.js o Mobile: Expo RN o DB: Postgres, MongoDB, Elasticsearch, Redis o Other: Git, Docker, AWS, Google Cloud. This vacancy is being advertised More ❯

.NET Developer - Financial Trading - C#, React - London (Tech stack: .NET Developer, .NET 9, C#, React, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client, a market-leading financial trading firm, renowned for its innovation, lightning-fast technology and elite engineering culture, is seeking talented .NET Developer to join their award winning team. With a strong presence in global markets, they More ❯

.NET Developer, .NET 9, C#, Agile - London (Tech stack: .NET Developer, .NET 9, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, Web API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) We are pleased to announce the arrival in the UK of one of Silicon Valley's most successful and exciting brands. They're at the … solutions. .NET Developer applicants should have commercial experience with: .NET, .NET Core/ASP.NET MVC, C#, Azure SQL and Agile. Full training will be provided into: .NET 9, JavaScript, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. If you are dedicated to the youthful optimism of More ❯