15 of 15 WebSockets Jobs in Central London

Senior Python Developer/ Engineer

Location
City of Westminster, England, United Kingdom
Have Skills: Experience with React/NextJS. Experience with automated testing frameworks such as Pytest, Unit Testing, Integration Testing, and API Testing. Exposure to WebSockets, event‐driven architectures, or real‐time data patterns. Familiarity with modern authentication approaches such as OAuth2, OpenID Connect, JWT, and AWS Cognito. Experience with OpenAPI ...

Senior Front-End Engineer React

Hiring Organisation
Halian Technology Limited
Location
Central London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
tracking platforms Azure Static Web Apps Azure DevOps CI/CD pipelines Vite performance optimisation and bundle analysis Storybook or other component documentation platforms WebSockets or SignalR Client onboarding platforms KYC/KYB workflows Regulated financial services environments If you don't have industry-specific experience but are an exceptional ...

Frontend Architect - React AI

Location
City Of London, England, United Kingdom
testing, and deployment. Technical Skills & Expertise- Frontend Technologies: Expert-level proficiency in HTML, CSS, JavaScript, React, and TypeScript Real-Time Communication: Strong understanding of WebSockets, Server-Sent Events (SSE), and REST APIs State Management & Programming: Solid experience with state management libraries (e.g., Redux) and reactive programming paradigms Architecture: Strong understanding ...

Senior C++ Engineer – Trading

Location
City Of London, England, United Kingdom
performance derivatives trading across international markets. You’ll be responsible for: Developing low-latency exchange connectivity using native exchange APIs and protocols including FIX, WebSockets and HTTP. Building and enhancing high-performance trading algorithms alongside traders and quantitative analysts. Optimising application performance through techniques such as kernel bypass, TLS optimisation ...

Senior Frontend Architect — Real-Time React & TypeScript

Location
City Of London, England, United Kingdom
full UI development lifecycle, from design through testing and deployment, using HTML, CSS, JavaScript, React and TypeScript. Strong experience with real-time communication (WebSockets, SSE) and REST APIs, plus state management (Redux) and SPA architectures, is essential. #J-18808-Ljbffr ...

Full Stack Software Engineer

Hiring Organisation
Acacia Green Technologies
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
About Acacia Acacia Green Technologies develops and delivers connected technology for hotels and other complex buildings. Our work brings together hospitality television and guest experience platforms, IoT sensors, energy and environmental monitoring, building controls, systems ...

Real-Time React UI Architect - Low-Latency

Location
City Of London, England, United Kingdom
delivering high-performance interfaces. The ideal candidate will have hands-on experience with HTML, CSS, JavaScript, React and Redux, plus real-time communication via WebSockets/SSE and testing with RTL/Jest. #J-18808-Ljbffr ...

Senior Engineer (Full-Stack)

Location
City Of London, England, United Kingdom
ReactQuery Experience with modern JavaScript frameworks - React Knowledge of version control systems (Git) Understanding of cross-browser compatibility Familiarity with RESTful APIs, GraphQL and Websockets Experience with CSS pre-processors e.g. Tailwind Back-end skills Proficiency in backend programming languages (Typescript and/or other OOP language such as c# …/Java) Strong database knowledge (SQL and NoSQL) Proficiency with RESTful APIs and GraphQL APIs and Websockets Experience with microservices architecture Knowledge of version control systems (Git) Experience with Terraform Experience with automated testing Experience with AWS (AWS Lambda, AWS Fargate, Amazon API Gateway, AWS AppSync) Worked within an Agile ...

Integrations Engineer

Location
City Of London, England, United Kingdom
connected devices, or software integrations is a plus. A basic understanding of REST APIs, HTTP, and JSON; familiarity with API testing tools like Postman. WebSockets and OAuth2 experience is a bonus. Knowledge of OCPP is advantageous but not required. Experience in EV charging or energy is a plus ...

Front End Developer - React, RxJS, Typescript, Websockets, EDA

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £800/day £700-£800
Front End Developer - React, RxJS, Typescript, Websockets, EDA Working with a global financial services organisation who are looking for a Front-End Developer with expertise in React, RxJS, Typescript, Websockets and Event Driven Development (EDA) t o join a small, collaborative team responsible for building a modern trading application …/day Inside IR35 via Umbrella Skills and Experience Required Frontend: Proven experience as a Front-End Developer with expertise in React, RxJS, Typescript, Websockets and Event Driven Development (EDA) Real-Time: Experience with Real-time Data. Stakeholder Management: Interface with project stakeholders to gather requirements and build solutions that ...

Engineer C# (Full Stack)

Location
City Of London, England, United Kingdom
Group Overview The TP ICAP Group is a world‐leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of ...

Principal Software Engineer - C#

Location
City Of London, England, United Kingdom
The TP ICAP Group is a world leading provider of market infrastructure.Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible ...

Principal Software Engineer - C#

Location
City Of London, England, United Kingdom
Role Overview ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands‐on delivery of a desktop platform automating and streamlining trading desk workflows. This is a high‐visibility player‐coach ...

Principal Engineer I — Prepurchase Platform

Location
City Of London, England, United Kingdom
Job Summary: JOB DESCRIPTION –Principal Engineer I, Prepurchase Platform Location:London, UK Division:TicketmasterUK Limited LineManager:VP Engineering, Accounts, Identity and Pre-Purchase Contract Terms:Full-time permanent, 40h/per week THE TEAM The ...

WPF UI Developer

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Permanent
Top Tier Investment Bank requires an experienced senior WPF C Sharp .Net developer to lead on the direction and delivery of a low latency, high through put etrading UI platform. Responsibilities Software engineering experience in ...