1 to 25 of 88 React Jobs in the City of London

Collaborate with cross-functional teams to deliver key milestones Provide support for production systems when required Technical Skills & Experience Essential: Strong experience with Next.js, React, and TypeScript Solid front-end engineering experience, ideally within real-time or trading environments Experience with WebSockets or SignalR for real-time communication Backend development ...

Full Stack Engineer with a strong track record in senior or principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST ...

interact with databases efficiently Familiarity with Python, Java, Swift, C, C++ and/or Objective-C ; and JavaScript and/or Typescript/React is a plus ...

interact with databases efficiently Familiarity with Python, Java, Swift, C, C++ and/or Objective-C ; and JavaScript and/or Typescript/React is a plus ...

priorities in a fast-paced environment Technical Skills Power Platform (Power Apps, Power Automate, Power Pages, Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI, Claude, Gemini) Docker, Kubernetes ...

client stakeholders. Key Responsibilities Design and build applications using ASP.NET Core, C# and modern JavaScript frameworks Develop responsive, accessible front-end interfaces using React, Angular or Blazor/Razor Contribute to cloud-native architectures on AWS or Azure Implement modern DevOps practices including CI/CD pipelines and automated testing ...

Sitecore, Optimizely, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 10.0, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This ...

traditional software projects. Required Skills and Experience Backend development using Python with FastAPI or TypeScript with Node.js or Express Experience building microservices architectures React and TypeScript front end development experience Familiarity with Next.js or Vite Experience with Generative AI frameworks such as LangChain, LangGraph or CrewAI Experience working with Large ...

components Experience enabling data scientists and engineers with Python-based development workflows and tooling Technology Stack: Azure Cloud Services C# (.NET 10) Python React.js and modern JavaScript (ES6+) Snowflake (Data Warehouse) Apache Airflow Terraform dbt SQL Server ...

Inside IR 35, hybrid working. Initially 6-9 months About the role: Experience with C#/.NET Additional languages highly desirable ie Java, Python React/TypeScript RESTful API design Apache Kafka PostgreSQL Git/GitHub workflows Experience with Kubernetes deployments; able to build CI/CD pipelines About ...

Full Stack Engineer (Data): 5+ years experience in full-stack development or data integration/migration . Strong hands-on experience with JavaScript, TypeScript, React and Python . Strong data analysis and problem-solving skills . Experience in agile/continuous delivery environments . Ability to work proactively with minimal ...

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 ...

Responsibilities Design and deliver scalable, secure web applications Build backend services using Python (e.g. FastAPI, Flask, or Django) Develop modern frontend applications using React and TypeScript Design and maintain RESTful APIs 5+ years’ experience as a full-stack developer AI & Modern Development Practices (Required) Experience using AI coding tools ...

advanced skills with backend C# .Net, and SQL You have experience with public cloud platforms, AWS preferred You are comfortable creating GUIs with WPF, React or Angular You have experience of working with stakeholders and users to understand problems and build effective solutions You're comfortable with using AI tools ...

Senior Engineers to help define the next chapter of growth. The Engineering Environment A modern, cloud-native platform engineered for serious scale: Node.js, TypeScript React (frontend) AWS cloud infrastructure Kubernetes Terraform (Infrastructure as Code) Architecture Highlights Event-driven, distributed systems (EventBridge, SQS) Public-facing REST APIs Fully automated CI/ ...

experience in production environments and enjoy seeing your code solve tangible business problems. Stack Versatility: You are highly proficient in Python ( FastAPI ) and TypeScript ( React/Next.js ), with a solid grasp of SQL and GCP . Independent Execution: You are comfortable working with high levels of trust and minimal oversight ...

Desirable skills: We would love to hear from you if you also have experience in multi-threaded application development, JavaScript front-end frameworks like React, network programming (TCP/UDP), or distributed version control systems like Git or PlasticSCM. Salary: £40,000 to £110,000, Benefits: Gym membership, pension scheme ...

contribute to architectural decisions across services, data models, and how AI is integrated into a production-grade system. Stack: Python, FastAPI, Pydantic, LangGraph, Claude, React, TypeScript, Terraform What you need Strong experience building production Python backend systems Deep knowledge of FastAPI (or similar), async Python, and PostgreSQL Comfortable working across ...

Collaborate with engineers, product, and design to ship high-quality features Requirements Experience in product-focused engineering environments Strong skills in TypeScript, Node.js, and React Experience with modern frontend tooling (e.g. Tailwind or similar) is a plus Solid knowledge of relational databases (e.g. PostgreSQL) Experience with cloud platforms and infrastructure ...

. Comfortable working with Python and familiar with modern cloud infrastructure (AWS, Terraform, PostgreSQL, Modal). Ability to create intuitive, polished user interfaces using React and Tailwind CSS. Value fast iteration and a hands-on, collaborative approach. Excellent problem-solving and communication skills. Benefits: Above-market compensation and significant founding ...

detail typography, spacing, and design consistency. Experience with Azure DevOps, CI/CD pipelines, and Azure Monitor. Familiarity with LogicApps, Azure Web Apps, React, or additional front-end frameworks. Experience with automated testing frameworks. Skills & Competencies Ability to communicate complex technical concepts clearly to non-technical audiences. Excellent time management ...

frontend systems into a new bespoke solution incorporating an API currently being developed in Python (FastAPI with PostgreSQL) and a web-app frontend in React.js or similar. WHAT YOU’LL DO Lead the CMS architecture, the heart of the creation and distribution of our assets and data. In collaboration with ...

scale-up experience (ideally in fast-growth environments) Role 1: AI Engineer Expert-level Python with exposure to frontend technologies (TypeScript/React preferred) Hands-on experience with LLMs, prompt engineering, and evaluation frameworks Ability to ship AI-powered features end-to-end Minimum 3 years of experience Role ...

stack and contributing to key decisions around architecture, product, and technical direction. What You’ll Be Doing Designing and building full-stack features across React, TypeScript, and Python Developing scalable backend systems and APIs Working with AWS cloud infrastructure (or similar) Contributing to AI/LLM-driven workflows and product ...

workflows across messy company systems Turn ambiguous business problems into clear technical components that can be automated Work across Ruby, Python, Rust, TypeScript, and React depending on the problem Ship production features that affect revenue, retention, and operational efficiency Improve reliability, scalability, and developer speed as the platform expands Collaborate ...