1 to 25 of 45 WebSockets Jobs

Fullstack Developer

Hiring Organisation
Devonshire Hayes Recruitment Specialists Limited
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £55,000 per annum
Support production systems and troubleshoot issues when required. Technical Skills Required Front End Next.js React TypeScript Web Components AG Grid Real-time communication using WebSockets or SignalR Strong experience building real-time trading or financial applications Back End C# .NET 8 Python REST APIs/Web APIs Microservices Architecture Messaging ...

Full Stack Software Engineer (Contract)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, 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) Actively utilising and experimenting with AI development tools (eg. Claude ...

Staff Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
high-performance frontends ( React/TypeScript ). Real-time Protocols: Mastery of async real-time, bi-directional communication protocols and patterns whether that's ( WebSockets, SSE ) for low-latency, real-time user experiences. "AI-First" Mindset: With AI tools, you have optimised your entire workflow around and can teach others ...

Product Engineering - Team Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
data pipelines using languages such as Node.js, Python, Go, or similar. Solid understanding of end‐to‐end system architecture: APIs, microservices, event‐driven architectures, WebSockets, message queues, databases, and how frontend and backend systems work together in high‐performance environments. Experience with infrastructure and DevOps fundamentals: CI/CD, cloud ...

Product Engineering - Team Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
data pipelines using languages such as Node.js, Python, Go, or similar. Solid understanding of end‐to‐end system architecture: APIs, microservices, event‐driven architectures, WebSockets, message queues, databases, and how frontend and backend systems work together in high‐performance environments. Experience with infrastructure and DevOps fundamentals: CI/CD, cloud ...

VP Lead Engineer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£120,000 - £130,000 per annum
technical leader, raising the bar across engineering standards and design decisions Tech Environment Java | React (Vite, NX) | Kafka/Solace/RabbitMQ | WebSockets/SSE | Rx | Kubernetes | SQL About You You are a strong technologist and technical leader with a passion for building high-performance systems in complex environments.You will ...

Lead Software Engineer

Hiring Organisation
ARM
Location
Fareham, Hampshire, United Kingdom
Employment Type
Permanent
technologies (across Windows and Linux environments): C++, Python, JavaScript XML, JSON, HTML, CSS Web frameworks and backend technologies (e.g. Angular, Django, Node.js, React, Apache) WebSockets and real-time data systems Docker and containerisation Networking protocols (TCP/IP, UDP) SQL and database technologies Debugging and diagnostic tools (e.g. Wireshark, system ...

Senior C++ Network Engineer – Real-Time SDK

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
will work across Windows and Linux with cloud deployments on Azure or AWS. The ideal candidate has strong C/C++ skills, experience with websockets and JSON, and familiarity with Kubernetes, Docker, and CI/CD #J-18808-Ljbffr ...

Frontend Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, 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 ...

Software Engineer, Back End

Hiring Organisation
Jobleads-UK
Location
United Kingdom
write clean, maintainable code regardless of which frameworks you use or how you learnt them. Understanding of the protocols IP, HTTP, TCP, FTP, UDP, Websockets, RMI, RCP. Experience in Java, Spring, REST, XML & JSON and have an understanding of how web technologies work. Experience with Docker & Kubernetes & AWS will ...

AI Engineer - Retail (LH)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
call rota as required Experience with LLM’s including realtime models Experience with Docker, Container Apps, containerised distributed systems, Terraform, Kafka, New Relic, MCP, Websockets Experienced in writing automated tests and maintaining CI/CD pipelines Proven experience of source and version control tools such as GitHub Be experienced working ...

Principal AI Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
data infrastructure that directly feeds ML models or AI agent systems Familiarity with prompt engineering, fine-tuning, or AI model optimisation Real-time systems, WebSockets, or live data pipelines Experience with real-time location/proximity data (Bluetooth/RFID/UWB-based systems) Prior experience in a platform/ ...

Software Engineer - Frontend - Payments

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
mobile applications Deep understanding of JavaScript/TypeScript and proficiency with React and React Native frameworks Experience with Next.js, RESTful APIs and WebSockets Experience with frontend testing frameworks Familiarity with modern front-end build pipelines and tooling Strong understanding of UI/UX best practices and principles Experience within ...

Senior Full Stack Engineer

Hiring Organisation
Develop
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
operate autonomously in a fast-moving environment Highly Desirable Sidekiq and background job processing expertise Stripe or payment platform integrations Event-driven architectures WebSockets/real-time applications AI-assisted development workflows and tooling Experience scaling SaaS platforms Startup or scale-up experience The Ideal Person You'll likely thrive ...

Back-End Engineer, Trading

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Professional experience building backend services, ideally in Kotlin and/or Python. Solid experience designing and building backend services and REST APIs; experience with WebSockets or other real-time streaming protocols such as NATS/JETSREAM is a plus. Working knowledge of SQL and experience integrating with multiple internal ...

Principal Engineer, CoinDesk Data Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
experience designing, building, and operating complex, large-scale distributed systems. You should have specific experience with both synchronous (e.g. REST APIs) and asynchronous (e.g. WebSockets, message queues like Kafka or RabbitMQ, event streams) communication patterns. Operational Resilience: Experience with High Availability or sophisticated disaster recovery strategies for global, 24/ ...

Real-Time Backend Engineer | Crypto Trading Platform (London)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
time client APIs, collaborating closely with product, frontend, and trading teams. Applicants should have Kotlin or Python backend experience, proficiency with REST APIs and WebSockets, and knowledge of SQL, Docker/Kubernetes, and AWS. #J-18808-Ljbffr ...

Software Engineer

Hiring Organisation
SRG
Location
City of London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
Competitive salary
full stack development experience Strong Angular, Strong .NET and legacy ASP.NET MVC Solid grounding in SOLID principles, clean code and software craftsmanship Experience with WebSockets; Git and Jira; XL Deploy/XL Release a bonus SQL Server and investment banking experience advantageous An agile mindset and genuine care for code ...

Full Stack Engineer

Hiring Organisation
Develop
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
operate autonomously in a fast-moving environment Highly Desirable Sidekiq and background job processing expertise Stripe or payment platform integrations Event-driven architectures WebSockets/real-time applications AI-assisted development workflows and tooling Experience scaling SaaS platforms Startup or scale-up experience The Ideal Person You'll likely thrive ...

Software Engineer

Hiring Organisation
Accountancy Action
Location
Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
building backend systems with Node.js (5+ years) Proven experience designing scalable APIs and distributed systems Familiarity with real-time or event-driven architectures (e.g. WebSockets, queues, streaming) Experience with cloud platforms (AWS preferred) Solid understanding of databases (SQL and/or NoSQL) Experience integrating with external APIs and third-party ...

Director Data & Analytics API Experience - Data Services

Hiring Organisation
Jobleads-UK
Location
Belfast, Northern Ireland, United Kingdom
code for public consumption. Experience designing and building cloud‐native SDKs and APIs on Google Cloud Platform (GCP), Apigee, and related technologies. Familiarity with WebSockets, REST, GCS, OAuth 2.0, GitHub, Protobuf/Avro, and SQL. Polymathic ability to bridge business strategy, engineering, and technical writing. Demonstrated problem‐solving skills ...

Backend Engineer

Hiring Organisation
Technical Futures Ltd
Location
CB2, Cambridge, Cambridgeshire, United Kingdom
Employment Type
Permanent
Salary
£55000 - £70000/annum Dep on Exp + Shares + Hybrid + 30DH
Ansible, OpenTofu). Modern Python tooling and packaging such as uv. Data storage and pipelines, including large simulation results and model serving. API, REST, WebSockets such as FastAPI. Hybrid working available (3 days office/2 WFH), a very generous base salary dependent on your level of skills and experience ...

Backend Engineer

Hiring Organisation
Robert Half Limited
Location
London, United Kingdom
Employment Type
Contract, Work From Home
architectural patterns. The role combines hands-on ownership of backend services with architectural leadership responsibilities. Elixir and the Phoenix framework GraphQL PostgreSQL Redis WebSockets and Phoenix Channels for real-time communication Message-driven architectures and asynchronous processing patterns Cloud-native infrastructure supporting globally distributed workloads You may interact with services ...

S&T - Credit Systematic Trading Developer - Director

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Who we are United by a sense of purpose towards our customers – to be a trusted partner for the long‐term – and our universal banking platform in EMEA, SMBC Group has an international growth agenda ...

Senior Software Engineer (C++ network programming)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
About Us:LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our ...