1 to 25 of 81 React Jobs in the City of London

Senior Software Engineer

Hiring Organisation
JSS
Location
City of London, London, United Kingdom
frontend and backend), and who cover the following skills and experience. Strong experience designing and building scalable full-stack web applications using TypeScript/React and C#/.NET (or equivalent technologies). Deep understanding of core software engineering principles, including design patterns, modular architecture, and maintainable, testable code. Proven ...

Python Software Engineer

Hiring Organisation
Roc Search
Location
City of London, London, United Kingdom
control workflows Desirable Experience with Streamlit or similar Python frameworks Knowledge of Rust, C, or C++ Basic HTML/CSS/JavaScript (They used React) Understanding of networking and web architecture Experience with SaaS platforms or IoT environments This role can be hybrid in London or remote first paying ...

.NET Developer, CMS, Sitecore, EpiServer, Umbraco

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £75,000 per annum
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 ...

Senior Developer – Investment Management Technology

Hiring Organisation
Pharos Resource Partners
Location
City of London, London, United Kingdom
proactive, solution-oriented mindset Strong technical expertise across: Microsoft Azure & Fabric .NET/C# SQL & APIs PowerShell Docker, Jenkins, Terraform, and Azure DevOps React, ASP.NET, and Angular Jira and Confluence What We’re Looking For The successful candidate will combine strong technical engineering capability with a deep understanding of investment ...

Lead Software Engineer

Hiring Organisation
Formula
Location
City of London, London, United Kingdom
tooling and practices across the engineering function Requirements as Lead Software Engineer: Strong engineering background in Python Frontend exposure - ideally in Angular but React/Vue or related frameworks is also ok Expertise designing and building systems with performance and scalability in mind Familiarity with Gen AI frameworks such ...

Principal Technical Lead

Hiring Organisation
RSSB
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
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 ...

Senior Staff Forward Deployed Engineer

Hiring Organisation
Uniphore
Location
City of London, London, United Kingdom
roles Proven track record deploying AI/ML or data-intensive applications in production Strong full-stack skills: Python, Node.js/Go, React/Vue, SQL, REST/GraphQL DevOps proficiency: Docker, Kubernetes, CI/CD, and major cloud platforms Expertise in LLMs, Prompt Engineering, Vector DBs, RAG pipelines ...

Senior Full Stack Engineer

Hiring Organisation
Humanoid
Location
City of London, London, United Kingdom
tools, processes, and best practices to support team knowledge and future development. Expertise Proficiency in one of Python, Javascript, Golang or Rust Familiarity with React (or similar frameworks) for creating user-friendly web applications. Expertise in API design, data modeling, and distributed architectures Proficiency with CI/CD pipelines, containerization ...

Software Engineer

Hiring Organisation
Sing King
Location
City of London, London, United Kingdom
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 ...

Senior C# Developer C# .Net - Sports Trading

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent
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 ...

Senior JavaScript Engineer | DataGrid & Charting Libraries | London

Hiring Organisation
techstack Recruitment
Location
City of London, London, United Kingdom
C#, Java, Python, etc.) Deep understanding of algorithms, data structures, and software design Experience building complex systems — not just application-layer UI Familiarity with React, Angular, or Vue (and how they interact with the DOM) Ability to reason about performance, memory usage, and rendering behaviour High standards for code quality ...

Senior Software Engineer

Hiring Organisation
Plan:it
Location
City of London, London, United Kingdom
requirements, think about the customer, and understand the bigger picture Contribute to architecture decisions as the team and platform scale Stack: Java, GoLang, Python - React, TypeScript, Next.js - Terraform, GCP, GitHub Actions. AI? YES - They're shipping LLM-powered products 👉 Exact tech match less important than strong backend fundamentals ...

Full Stack Engineer

Hiring Organisation
Accenture
Location
City of London, London, United Kingdom
bring solid full‐stack engineering experience (not purely front end or back end), working across the full development lifecycle. Your core technology experience includes React, Node.js, Python, and Java. You have hands‐on cloud experience, designing and delivering solutions on AWS and/or Azure. AI experience is essential ...

Backend Software Engineer C# .Net SQL - Sports Trading

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
.Net/ASP.Net backend experience You have a good knowledge of SQL or Oracle databases You've had some frontend exposure with JavaScript/React You have a solid understanding of Computer Science fundamentals (OOP, Data Structures, Design Patterns, Algorithms) You have strong communication and teamwork skills What ...

Senior Frontend Developer

Hiring Organisation
Pentasia
Location
City of London, London, United Kingdom
senior engineering role with ownership of complex systems. - Strong expertise in front-end technologies (JavaScript/TypeScript frameworks) or another core area such as React - Ability to work beyond a single specialization (T-shaped skillset) — preferred but not strictly mandatory. - Experience integrating front-end applications with APIs and backend services. ...

Senior Engineer

Hiring Organisation
Formula
Location
City of London, London, United Kingdom
Strong commercial Kotlin experience for backend development, ideally within payments or financial services Domain expertise in payment gateway systems or payments infrastructure Comfortable with React.js for full stack contribution where required Proven ability to take requirements through to architecture, design, and delivery Senior Software Engineer level ownership of technical decisions ...

Principal Engineer

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
Knowledge of financial markets or trading systems. Knowledge of FCA Market Abuse Regulation. Experience with performance optimisation and profiling. Familiarity with modern UI frameworks (React, TypeScript) and design principles. Exposure to containerisation and orchestration tools. Understanding of architectural frameworks and best practices. Knowledge of AWS or other cloud platforms. Role ...

Software Engineer (AI+Fullstack)

Hiring Organisation
83zero Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£45000 - £55000/annum benefits, perks, healthcare
engineering practices. Key Skills: AI & GenAI: LLMs, RAG, Agents, LangChain, LangGraph, CrewAI, Vercel AI SDK, OpenAI, Anthropic, Mistral, Llama. Full Stack Engineering: Python, TypeScript, React, APIs, Microservices, FastAPI. Cloud & DevOps: AWS/Azure, Docker, Kubernetes, Terraform, CI/CD. Data & Vector Search: PostgreSQL, MongoDB, Pinecone, Qdrant, ChromaDB, PGVector. Observability & Tooling … experience: Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript ...

Lead Full-Stack Web Developer - Hedge Fund

Hiring Organisation
Vertus Partners
Location
City of London, London, United Kingdom
involved throughout the entire software lifecycle; design, deployments and continuous improvement whilst leading a small global team. Requirements: -Strong experience with Vue.js/React for frontend development -Python knowledge for backend services -Experience with security protocols -Understanding of the AWS stack -Lead experience is ideal - direct reports/mentoring This ...

Solutions Architect - Payment Domain

Hiring Organisation
Infinity Quest
Location
City of London, London, United Kingdom
Spring Boot, microservices, REST/gRPC Cloud: AWS (EKS/ECS, SQS/SNS, API Gateway, Terraform) API: OpenAPI/AsyncAPI, versioning, governance Frontend: React/TypeScript (working knowledge) Domain Expertise (any of these) Real-Time Ledger (accounting, event sourcing) Payments (SWIFT, ISO 20022, settlement) FX (trade lifecycle, rates, positions ...

Full Stack Engineer

Hiring Organisation
Arrows
Location
City of London, London, United Kingdom
scalable backend foundations from the ground up to support a massive global market. Human-Centric UI: Collaborate on the planning and iteration of our React-based front-end to ensure our complex AI systems are intuitive and widely adopted. Product Roadmap: Partner with the founders to extract insights from customer ...

Senior Ruby Developer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
development, and confidence in a product-focused environment. Comfort with distributed systems and B2B integrations is a must. Desired Skills ⚙️ Ruby on Rails TypeScript React or Vue.js AWS They are willing to move quickly with this role, please apply now if interested. Senior Ruby Developer - Leading Health Tech - Hybrid ...

Senior Software Engineer (Rust - Any Backend Language Accepted)

Hiring Organisation
Understanding Recruitment
Location
City Of London, England, United Kingdom
Engineers to their team. The team are open to hiring pure backend engineers, or full-stack engineers. Their technical stack is Rust , Typescript and React on the frontend. They do not require any experience in any of these technologies , the team hire on pure technical acumen rather than years ...

Application Developer

Hiring Organisation
ALFA TECHNOLOGY RECRUITMENT LTD
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 Annual
firm in London is looking for an Applications Developer who can work across the full stack: ASP.NET MVC, SharePoint (on-prem and Online), SQL, React, Power Platform, and everything in between click apply for full job details ...

Sharepoint Developer

Hiring Organisation
Eutopia Solutions ltd
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum, Inc benefits
Core MVC application development • C# and Web API development • SQL Server, Entity Framework & SSRS • Power Platform (PowerApps/Power Automate) • Front-end technologies including React, Angular, jQuery & Bootstrap You’ll be working across a mix of: Custom SharePoint solutions Enterprise workflow automation Internal web applications Systems integration projects Reporting ...