19 of 19 WebSockets Jobs in Central London

AI Agents Solution Architect - Future Talent (Q2/Q3 opportunities) for leading GSI in the software engineering market AI Solution Architect to design and implement AI-driven agent solutions for the online commerce space. Deep understanding of AI/ML More ❯

environments Design and implement modular, event-driven architectures (e.g., Lambda + SQS/SNS + Step Functions) to enable scalable agent workflows Develop and manage API layers (REST, GraphQL, WebSockets) to orchestrate intelligent interactions between agents, models and services Lead implementation of full-stack interfaces and services using Node.js, TypeScript, React.js, Express, Next.js Integrate ML models and embeddings into production More ❯

ceremonies including stand-ups, backlog refinement, and retrospectives Evaluate and improve the frontend architecture, including state management and API integrations Help implement real-time frontend/backend communication using WebSockets Extend and optimise the use of Nx for a frontend monorepo setup Leverage Zustand and TanStack Query for state/data handling, and React Router for navigation Work on real More ❯

ceremonies including stand-ups, backlog refinement, and retrospectives Evaluate and improve the frontend architecture, including state management and API integrations Help implement real-time frontend/backend communication using WebSockets Extend and optimise the use of Nx for a frontend monorepo setup Leverage Zustand and TanStack Query for state/data handling, and React Router for navigation Work on real More ❯

and designing clean data models (SQL/NoSQL) Bonus Points For: Familiarity with AI/LLM tools (LangChain, Vercel AI SDK, OpenAI APIs) Experience building real-time apps (e.g., WebSockets) Understanding of authentication/authorization flows in web apps Knowledge of financial services, fintech, or enterprise-grade products This is a rare opportunity for a Senior Full Stack Engineer to More ❯

to unleash their inner self-starter and work in an environment that fosters entrepreneurial minds. The FS role should have everything from BE plus: Experience: React, Webpack, SCSS etc, WebSockets, Federated Modules Good to have: Rspack, Micro-frontends We are using HackerRank for the pair programming Tooling: JIRA, Splunk, Slack More ❯

/Java/Go + 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) Built and deployed services on More ❯

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: ASAP Purpose of the role More ❯

strong full stack engineer, proficient in TypeScript or JavaScript and Python. You have experience building high-performance, responsive web applications, and a deep understanding of HTTP protocols, REST APIs, WebSockets, and the DOM. You are comfortable operating across the stack, with strong knowledge of relational databases, web security best practices, and authentication. You have experience architecting distributed systems and deploying More ❯

developing with: Relational databases (PostgreSQL, MySQL, etc.) OpenSearch DynamoDB S3 Event-driven architectures Third-party API integration Access control and user permissions Implementing APIs used by single-page applications WebSockets Infrastructure as code (AWS CDK, Terraform, etc.) Docker AWS IoT What we’re looking for Circa 2 years of commercial or equivalent experience in a software development role building cloud 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 ❯

a focus on flexibility, speed, and accuracy. Core Tech Stack Languages: Python (Python 3.10+), JavaScript and TypeScript for frontend Tools: RabbitMQ and ZeroMQ for messaging; PostgreSQL for data storage; Websockets for frontend communication Environment: Linux servers Observability: Prometheus, Grafana, Zabbix Benefits: Working alongside other extremely talented and driven engineers Extremely lucrative salary, bonus upto 30% and excellent benefits Greenfield Python 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 ❯

Social network you want to login/join with: Electronic Trader, london (city of london) col-narrow-left Client: Nonco Location: london (city of london), United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views 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 ❯

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 ❯

modern JavaScript (ES6+) Proven experience delivering front-end applications in electronic trading environments Strong understanding of performance optimisation and low-latency UI design Experience with real-time data technologies (WebSockets, FIX, etc.) Familiarity with containerized front-end platforms such as OpenFin is a plus Prior exposure to Fixed Income products (Rates, Credit, Bonds) or other capital markets Experience in data More ❯

Go Developer/Backend Software Engineer (Golang API Messaging) London/WFH to £100k Are you a senior, backend focussed Software Engineer with strong Go/Golang coding skills and real-time messaging experience? You could be progressing your career More ❯

define and evolve a robust 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, coroutines, memory, and threading Familiarity More ❯