1 to 25 of 63 Permanent WebSockets Jobs in the UK

Backend Engineer

Hiring Organisation
algo1
Location
Slough, Berkshire, UK
Employment Type
Full-time
Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object) Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE) Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar) Experience with container orchestration and service containerisation (Kubernetes, Docker) Built ...

Backend Engineer

Hiring Organisation
algo1
Location
City of London, London, United Kingdom
Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object) Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE) Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar) Experience with container orchestration and service containerisation (Kubernetes, Docker) Built ...

Full Stack .NET Developer

Hiring Organisation
Jola Cloud Solutions Ltd
Location
Nottingham, England, United Kingdom
unit testing frameworks (MSTest, xUnit, or NUnit), integration testing, and mocking libraries (Moq or NSubstitute). Bonus Skills: Exposure to SignalR, gRPC/WebSockets, Microservices architecture, or advanced design patterns (CQRS, Mediator) would be a huge plus! Other General Information: This job description is not designed to be a complete ...

Frontend Engineer

Hiring Organisation
algo1
Location
Slough, Berkshire, UK
Employment Type
Full-time
Extensive experience with modern web frameworks and patterns (eg. React, Next.js, Tailwind) Experience with real-time and bi-directional communication protocols and patterns (eg. WebSockets, SSE) Built and deployed services on any major cloud providers' services (Azure, GCP, AWS) AI-Native development: fast iteration & prototyping using AI tools such ...

Frontend Engineer

Hiring Organisation
algo1
Location
City of London, London, United Kingdom
Extensive experience with modern web frameworks and patterns (eg. React, Next.js, Tailwind) Experience with real-time and bi-directional communication protocols and patterns (eg. WebSockets, SSE) Built and deployed services on any major cloud providers' services (Azure, GCP, AWS) AI-Native development: fast iteration & prototyping using AI tools such ...

Full Stack Engineer

Hiring Organisation
algo1
Location
Slough, Berkshire, UK
Employment Type
Full-time
React) Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object) Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE) Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar) Experience with container orchestration and service containerisation (Kubernetes, Docker ...

Full Stack Engineer

Hiring Organisation
algo1
Location
London Area, United Kingdom
React) Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object) Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE) Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar) Experience with container orchestration and service containerisation (Kubernetes, Docker ...

React Developer

Hiring Organisation
Huxley Associates
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£130000 - £150000/annum
reusable UI components and libraries for advanced data visualisation. (Charts, grids, real-time feeds). Optimise performance for handling high-volume realtime data streams (Websockets, API's). Integrate with backend services for pricing, trade booking and market data. Required Experience: Minimum 5 years of of professional front end development ...

Senior Software Engineer

Hiring Organisation
Williams Racing
Location
Grove, England, United Kingdom
based UIs Python for analysis, tooling, and rapid prototyping Cloud-native services ( Azure, Docker, Kubernetes ) alongside HPC and on-prem systems Data transport via WebSockets, TCP , and custom protocols for real-time telemetry and control You’ll Be a Great Fit If You Have: A degree in Computer Science, Engineering ...

Frontend Software Engineer : React/TypeScript/JavaScript : Elite Trading Firm, London

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
seriously — every single day Tech Stack Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar state management) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: WebSockets, performance profiling, custom charting (D3.js, Highcharts) What They’re Looking For Deep expertise with React and modern TypeScript/JavaScript Strong architectural thinking, performance tuning ...

Frontend Software Engineer : React/TypeScript/JavaScript : Elite Trading Firm, London

Hiring Organisation
Hunter Bond
Location
Slough, Berkshire, UK
Employment Type
Full-time
seriously — every single day Tech Stack Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar state management) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: WebSockets, performance profiling, custom charting (D3.js, Highcharts) What They're Looking For Deep expertise with React and modern TypeScript/JavaScript Strong architectural thinking, performance tuning ...

Senior React Engineer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Senior React Engineer - £700 - £800 p/day – On-site (Central London) Overview We are hiring a Senior React Engineer to join a high-performance technology team within a leading financial services organisation operating in ...

Android Engineer

Hiring Organisation
algo1
Location
Slough, Berkshire, UK
Employment Type
Full-time
mobile architecture using modern patterns Work closely with design & product to ship polished, scalable user interactions Essential Qualifications: Experience with real-time protocols (eg. WebSockets gRPC, MQTT, SSE or similar) Experience with implementing on-device machine learning (eg. PyTorch Mobile, ML Kit, TensorFlow Lite) Strong understanding of Android performance: lifecycle ...

Android Engineer

Hiring Organisation
algo1
Location
London Area, United Kingdom
mobile architecture using modern patterns Work closely with design & product to ship polished, scalable user interactions Essential Qualifications: Experience with real-time protocols (eg. WebSockets gRPC, MQTT, SSE or similar) Experience with implementing on-device machine learning (eg. PyTorch Mobile, ML Kit, TensorFlow Lite) Strong understanding of Android performance: lifecycle ...

Javascript Software Engineer

Hiring Organisation
DCS Recruitment
Location
Salford, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum
WebRTC and SIP interoperability. Proven ability to design and implement responsive, user-friendly dial pad interfaces. Experience building event-driven, real-time systems using WebSockets and asynchronous workflows. Familiarity with SIP servers such as Asterisk or FreeSWITCH . Strong debugging skills across signalling and media layers. Comfortable working in Linux ...

Quantitative Developer (Rust/C++)

Hiring Organisation
TechShack
Location
City Of London, England, United Kingdom
measured it , and the impact on latency/throughput/stability. Nice to have: Exchange protocols (FIX, ITCH/OUCH/binary feeds, multiplexed WebSockets), colocation realities, Aeron/SBE. Kernel bypass/DPDK/tuning Why this role Trading desk environment (fast feedback, clear ownership). Real upside tied ...

UI Lead

Hiring Organisation
Ascendion
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
Title: UI Lead Location: Bromley, UK Job Type: Hybrid 3/Day WFO Job Description: We are seeking a highly skilled UI Developer to spearhead the development of the Single Dealer Platform within our Electronic ...

UI Lead

Hiring Organisation
Ascendion
Location
BR1, Bromley Town, Greater London, United Kingdom
Employment Type
Permanent, Contract
Title: UI Lead Location: Bromley, UK Job Type: Hybrid 3/Day WFO Job Description: We are seeking a highly skilled UI Developer to spearhead the development of the Single Dealer Platform within our Electronic ...

Front End Developer

Hiring Organisation
Noir
Location
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £80,000 per annum
Front End Developer - FinTech - Newcastle (Tech stack: Front End Developer, React, TypeScript, Websockets, SignalR, Containers, Orchestration, UX, Usability, Programmer, Developer, Architect, Front End Developer) Our client is a cutting-edge FinTech company with a reputation for innovation and excellence. They design and build advanced trading and analytics platforms used globally … Science (essential). Strong recent experience with modern front-end frameworks, particularly React, alongside TypeScript. Background working with real-time communication tools such as Websockets or SignalR. Familiarity with containerisation and orchestration platforms. A genuine enthusiasm for creating clean, usable, and engaging interfaces. The confidence to collaborate across different teams ...

Frontend Developer

Hiring Organisation
Noir
Location
Newcastle Upon Tyne, England, United Kingdom
Front End Developer – FinTech – Newcastle (Tech stack: Front End Developer, React, TypeScript, Websockets, SignalR, Containers, Orchestration, UX, Usability, Programmer, Developer, Architect, Front End Developer) Our client is a cutting-edge FinTech company with a reputation for innovation and excellence. They design and build advanced trading and analytics platforms used globally … Science (essential). Strong recent experience with modern front-end frameworks, particularly React, alongside TypeScript. Background working with real-time communication tools such as Websockets or SignalR. Familiarity with containerisation and orchestration platforms. A genuine enthusiasm for creating clean, usable, and engaging interfaces. The confidence to collaborate across different teams ...

Front End JavaScript Developer

Hiring Organisation
Enigma Software Solutions
Location
United Kingdom
Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date ...

Front End JavaScript Developer

Hiring Organisation
Enigma Software Solutions
Location
Cheltenham, Gloucestershire, UK
Employment Type
Full-time
Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date ...

Front End JavaScript Developer

Hiring Organisation
Enigma Software Solutions
Location
Basingstoke, Hampshire, UK
Employment Type
Full-time
Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date ...

Front End JavaScript Developer

Hiring Organisation
Enigma Software Solutions
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date ...

Front End JavaScript Developer

Hiring Organisation
Enigma Software Solutions
Location
London, UK
Employment Type
Full-time
Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date ...