26 to 50 of 91 React Jobs in the City of London

Backend Software Engineer 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 ...

Software Engineer

Hiring Organisation
Axiōma Search
Location
City of London, London, United Kingdom
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 ...

Python Developer

Hiring Organisation
Robert Walters
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
Formal software engineering training or certification with 3+ years of experience. * Strong analytical and development skills with computer science fundamentals. * Proficiency in Python and React/TypeScript. * Experience developing, debugging, and maintaining code in large corporate environments. * Knowledge of the software development life cycle and agile practices (CI/ ...

Forward Deployed Engineer - High Profile AI Scale-Up [Dubai based]

Hiring Organisation
oryxsearch.io
Location
City of London, London, United Kingdom
academic group Experience with production machine learning or LLM-based systems Exposure to enterprise data platforms or similar tools Frontend development experience (e.g., React) Familiarity with distributed computing frameworks (e.g., Spark) What’s on Offer Competitive compensation package, including equity Comprehensive benefits Hybrid working model Opportunity to build products ...

Senior Full Stack Engineer

Hiring Organisation
Access Computer Consulting
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £440/day
scale systems end-to-end, not those with superficial exposure or purely design-focused experience. Candidates must have strong experience of Java Full Stack, React, Kubernetes & Docker. Experience in building responsive, component based user interfaces using modern front end frameworks. Hands on expertise in API design and development (REST/ ...

Technical Lead

Hiring Organisation
Arrows
Location
City of London, London, United Kingdom
best practices, CI/CD and platform reliability Helping scale engineering processes and team structure as the company grows Tech Environment Go GCP Linux React/TypeScript GitHub/CI/CD Cloudflare Sentry What they’re looking for Strong backend engineering experience with Go Good understanding of distributed/ ...

Full Stack Engineer

Hiring Organisation
Reelables
Location
City of London, London, United Kingdom
Experience Core Technical Skills • Strong full-stack experience, with confidence working across frontend and backend codebases • Frontend: Solid experience with TypeScript and modern frameworks (React/Vue) • Backend: Experience building and modifying APIs and services (Node.js or similar) • Data & Infrastructure: Comfortable working with databases, data models, and cloud-hosted systems ...

Senior FullStack Developer

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
Banking client is seeking to recruit a Senior Full Stack Developer (React & .NET Core) on an initial 6 month based in London. It is hybrid and will require 3x days onsite per week. About the Role We are seeking a highly experienced Senior Full Stack Developer with deep expertise … React JS on the front-end and C# .NET Core on the backend. The ideal candidate will have substantial hands-on experience developing scalable applications, strong exposure to cloud-native architectures, with experience in the financial sector. Experience with CI/CD , microservices , and event-driven architectures is essential ...

Graduate / Junior Developer, Python, JavaScript, PHP - London

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £50,000 per annum
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. ...

Senior Software Engineer

Hiring Organisation
Understanding Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
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 ...

Lead Fullstack Engineer

Hiring Organisation
Immersum
Location
City of London, London, United Kingdom
Strong experience building modern full-stack applications (JS/TS/Node or similar) Deep knowledge of at least one modern frontend framework (React, Vue, Next.js) Experience designing and delivering scalable, cloud-based systems (AWS, Azure or GCP) Strong understanding of API design (REST/GraphQL), databases and system architecture ...

Founding Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
solutions to real-world legal challenges. You’ll join early enough to have true influence on product and direction. 💻 Tech Stack: Python | TypeScript | Next.js | React | GCP | AI-native systems 📍 Working setup: London (3 days in-office) 💰 Compensation: Up to £140,000 + meaningful early-stage equity 🔍 What they’re looking ...

Full Stack Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
+ meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe ...

Software Support Engineer - UI / JavaScript

Hiring Organisation
Principle
Location
City of London, London, United Kingdom
support high-end, high-value clients Good exposure to UI development with scripting skills – JavaScript Tech tools & skills such as CSS, Angular, Ajax, or React would be very useful SQL skills are also needed The Role This Support Engineering role will require you to liaise with technical counterparts in major ...

Python Developer

Hiring Organisation
Apex Systems
Location
City of London, London, United Kingdom
business-critical applications in a dynamic environment. Key Responsibilities Design and implement backend Python software solutions within the structured notes domain. Collaborate on a React UI application, ensuring clean API contracts and integration with backend services. Work in close collaboration with Quants, Sales, Trading, and other technology teams. Contribute ...

Applications Developer

Hiring Organisation
Larbey Evans
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
SharePoint. Strong knowledge of programming language with expertise in web development. Experience with client-side and front-end frameworks such as jQuery, Bootstrap, React, and Angular. ...

Artificial Intelligence Engineer

Hiring Organisation
Omnis Partners
Location
City of London, London, United Kingdom
Experience taking LLM or agent-based systems into production – Strong understanding of system design: orchestration, memory, deployment, monitoring – Exposure to tools such as LangGraph, ReAct, CoT — or building similar systems from scratch – Familiar with PyTorch/TensorFlow, RAG architectures, vector databases, modern cloud infra – Experience in startup or consulting environments ...

Principal Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
diagnosed the problems, fixed them, and unlocked the next phase of growth. This is about scaling products, not just teams. Tech Stack: Python · FastAPI · React · TypeScript · GCP Salary: £190,000 - £270,000 + Equity Working Arrangements: 3 days per week in Central London office Why it might interest ...

Product Engineer

Hiring Organisation
Alecto
Location
City of London, London, United Kingdom
measured on your impact Low ego and self-critical, open to feedback Give honest feedback directly and kindly Preferred Skills A TypeScript monorepo, React, tRPC and Tailwind Inngest for background jobs and event-driven workflows Deployed on Google Cloud Platform with Postgres Pay range and compensation package ...

.NET Developer

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
.NET Developer, C# 14 - Global Technology Brand - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET, C# 14, WPF, React, Angular 21, Microservices, Azure, ASP.NET Core Web API, Entity Framework, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Our clients fascinating story dates back to 1981; today they have fast become … development (.NET Core, C#) or winforms/WPF (C#) development. Our client will provide you with training into: .NET 10.0, WPF, MVVM, Prism, 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 Azure SQL. ...

Senior Product Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
Title: Senior Product Engineer Location: Hybrid – 3 days/week in Central London office Salary: Up to £150k + Equity Tech Stack: Go, TypeScript, React (open to other strong technical backgrounds) ✅ What They’re Looking For Engineers who think like product owners Prior startup success or fast-paced environment experience ...

Founding Engineer

Hiring Organisation
SEEKR
Location
City of London, London, United Kingdom
systems that support government planning at a local level Writing software that helps real-world projects get built Must-haves: Full Stack Typescript with React Built production AI before Product mindset. You will work directly with your users FAQ’s Salary: Up to £110 000 + Equity of course Working ...

.NET Developer

Hiring Organisation
Noir
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £80,000 per annum
.NET Developer, .NET 10.0, C# 14 - Consultancy - London Or Surrey (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 an award winning Microsoft consultancy. They specialise … software development methodologies is of interest (Agile, Scrum). My client will provide training in: .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, MongoDB, Azure, AWS, Node.js and Elasticsearch. This is a truly exciting project, one which if you are given the opportunity ...

Design Engineer

Hiring Organisation
Few&Far
Location
City of London, London, United Kingdom
work in an early stage company. Please apply if this sounds like you: Interest and experience in both engineering and design - they use typescript, react, node Previous startup experience is highly valued Any experience with Motion/GSAP; Three.js/WebGL or highly interactive web experiences is valued Enjoy ...

Full Stack Developer (C#)

Hiring Organisation
Ibex Talent Solutions
Location
City of London, London, United Kingdom
highly regulated industries (finance, healthcare, government). We're hiring Junior and Mid-level Fullstack Engineers with C#/.NET expertise and solid React front-end skills. This is a 4-DAY WORKING WEEK – focused on outcomes, not hours. No condensed hours, just genuine work-life balance. 🔧 What … Build & maintain secure, scalable backend services using .NET (Core 6/8+) + C# Develop frontend features with JavaScript + React (REST/GraphQL APIs) Own CI/CD pipelines (GitHub Actions, GitLab CI, or Azure DevOps) Integrate AI capabilities – e.g., message routing, anomaly detection, compliance checks Collaborate ...