51 to 75 of 101 WebSockets Jobs in the UK

XiP is building a next-generation cross-asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs. Team & Role Overview Our team owns More ❯

joining a high-performing backend team working in a Node.js and TypeScript monorepo. You'll design and scale services via REST and GraphQL APIs, build real-time functionality over websockets, and ship robust production-ready features in a collaborative, remote-first environment. What You'll Be Doing Craft scalable backend solutions using modern tooling and APIs Collaborate with engineers, product More ❯

system You will be collaborating closely with the Data Science team, contributing to our AI offerings You will explore a diverse range of technologies, including AWS, Linux, Docker, PostgreSQL, WebSockets, APIs... You will have exposure to other technologies such as Linux, Docker, AWS, PostgreSQL Your ideas will be highly valued in our collaborative team environment You will make a real More ❯

systems at scale. A strong understanding of modern dev practices like 12 Factor, CI/CD, and observability tools such as Datadog or Prometheus. Exposure to GraphQL APIs and WebSockets for real-time interactions. As part of our commitment to information security, all employees are expected to adhere to company security policies and procedures, participate in mandatory security awareness training More ❯

Job Role: Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven More ❯

Job Role: Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven More ❯

We aim to bring innovation to all our products and those of our clients. We are seeking a talented React Native Developer for various projects. If you're eager to be part of a successful team, BAP is a great More ❯

Job Role:Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven More ❯

At SEI we value our employees and believe in driving growth through change. Part of building brave futures is making a concerted effort to develop and challenge our employees to achieve their goals through internal job mobility. Quantitative Investment Management More ❯

Job Role: Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven More ❯

The Structured Documents team (Structured Modes stream) is seeking a highly skilled and passionate FullStack Software Engineer to join our team responsible for the structured formats at Miro. Our platform empowers millions of users daily to visually collaborate, brainstorm, and More ❯

Remote working is the new norm. Do you want to avoid a daily commute, reduce stress, achieve work-life balance, spend more time with your family, be more creative and improve productivity? At RemoteStar, we follow a remote-first work More ❯

Job Role:Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven More ❯

Job Role:Product Engineer (backend C# .net core) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£85k per annum About The Client: Our client builds AI-driven More ❯

Engineer, you must have the following experience: 10+ commercial experience as a Frontend Developer Architecting and developing desktop and mobile interfaces React, React Native, Redux, React Hooks CSS, Typescript, Websockets, REST APIs Leading cross-functional teams to drive product launches and realise end-to-end solutions Bonus points : understanding of trading interfaces, financial experience, blockchain knowledge, start-up experience With More ❯

Engineer, you must have the following experience: 10+ commercial experience as a Frontend Developer Architecting and developing desktop and mobile interfaces React, React Native, Redux, React Hooks CSS, Typescript, Websockets, REST APIs Leading cross-functional teams to drive product launches and realise end-to-end solutions Bonus points : understanding of trading interfaces, financial experience, blockchain knowledge, start-up experience With More ❯

deep understanding of React (ideally with Next.js) and responsive UI design. Backend proficiency: TypeScript (or other modern equivalent) full-stack development, including scalable serverless architectures, real-time technologies like WebSockets, and accounting for runtime safety in application design. Experience in product development, with a focus on delivering user value and intuitive, seamless user experiences. Skilled in prototyping and rapid iteration More ❯

happen, a real entrepreneurial spirit Bonus points Familiarity with building on the cloud AWS services - we use over 30 AWS services Experience working with ML technologies Protocols such as websockets and XMPP What you'll accomplish Collaborating on building new product features for our members. Building highly secure services (we handle sensitive personal data). Improving performance with investigative work. More ❯

happen, a real entrepreneurial spirit Bonus points Familiarity with building on the cloud AWS services - we use over 30 AWS services Experience working with ML technologies Protocols such as websockets and XMPP What you'll accomplish Collaborating on building new product features for our members. Building highly secure services (we handle sensitive personal data). Improving performance with investigative work. More ❯

Role Overview As a quantitative developer, you will play a pivotal role in building and optimising our quant trading systems, backtesting infrastructure, and research tools. You will collaborate closely with quantitative researchers, traders, and engineers to translate complex financial models More ❯

Role Overview As a quantitative developer, you will play a pivotal role in building and optimising our quant trading systems, backtesting infrastructure, and research tools. You will collaborate closely with quantitative researchers, traders, and engineers to translate complex financial models More ❯

We are seeking a skilled and proactive Electronic Trader to join our growing electronic trading team. This role is ideal for someone with a strong technical background and a deep understanding of electronic execution workflows within the crypto trading industry. More ❯

We are seeking a skilled and proactive Electronic Trader to join our growing electronic trading team. This role is ideal for someone with a strong technical background and a deep understanding of electronic execution workflows within the crypto trading industry. More ❯

Develop real-time systems that support complex broadcast technology solutions. Collaborate with internal teams to ensure scalability , maintainability , and performance of the software. Work on networking protocols (UDP, TCP, WebSockets) to handle real-time data and API development for system integration. Support integration with third-party systems and collaborate with external vendors. Participate in Agile sprints , code reviews , and retrospectives … or device drivers). Proficient in Windows application development (experience with Visual Studio is essential). Solid understanding of multithreaded programming , real-time systems , and networking protocols (UDP, TCP, WebSockets). Experience working with RESTful APIs and system integration. Familiarity with Agile methodologies and collaborative development environments (Jira, BitBucket, etc.). Knowledge of performance optimisation techniques in software applications. Desirable More ❯

architecture (This will be tested) Proven record of complex software delivery in the Interest Rates domain Excellent Java 21, Spring Boot, strong practical experience with containers, REST APIs, and WebSockets Strong experience of Agile, SCRUM, and test-driven development processes Strong leadership experience (at least 5 years of leading a team) Contact Ciara Clarke at Harrington Starr for a confidential More ❯