24 of 24 WebSockets Jobs in the Thames Valley

routing and state management Deep understanding of browser APIs, performance optimization, and responsive design Familiarity with Vite, pnpm, Git workflows, and OpenAPI integration via tools like Orval Experience with WebSockets, real-time data handling, and secure API communication Strong communication skills and ability to mentor and influence frontend standards This role is urgent and interviews can be arranged quickly. If More ❯

routing and state management Deep understanding of browser APIs, performance optimization, and responsive design Familiarity with Vite, pnpm, Git workflows, and OpenAPI integration via tools like Orval Experience with WebSockets, real-time data handling, and secure API communication Strong communication skills and ability to mentor and influence frontend standards This role is urgent and interviews can be arranged quickly. If More ❯

and a component-led design system (e.g. Shadcn/UI or similar). Work with real-time data and streaming endpoints , integrating AI-powered features into the frontend using WebSockets and SDKs. Implement secure user flows with OAuth-based authentication and token/session handling. Optimise performance and delivery using techniques like code splitting, lazy loading, and CDN-aware strategies. More ❯

What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed with long-term maintainability — quality and performance matter here Work on innovative challenges across document parsing, data visualisation, and ML integration Who You Are 5+ years’ experience in More ❯

Backend: Node.js • NestJS • MongoDB • Redis • BullMQ • Microservices • GCP AI/ML: Python • LangChain/LangGraph/LangSmith • Qdrant (vector DB) • Pydantic • FastAPI Integrations: WhatsApp Business API • Email • SMS • Webhooks • WebSockets ✅ What We're Looking For Must-Haves: Technical Chops 5+ years software engineering in production environments Strong in Node.js/TypeScript and Python Experience building microservices architectures Hands-on AI More ❯

RESTful APIs for mobile or web clients. Deep experience with distributed systems, microservices architecture, and event-driven patterns. Demonstrated experience with real-time applications and data streaming technologies (e.g., WebSockets, gRPC, Kafka). Experience integrating third-party AI/ML APIs (e.g., LLMs, STT/TTS, or other complex services) into production systems. Experience with containerization (Docker, Kubernetes) and deploying More ❯

develop backend services using Node.js/Nest.js and TypeScript . ->Architect and optimise data models and infrastructure within PostgreSQL . ->Build and maintain APIs and integrations (REST, GraphQL, tRPC, WebSockets). ->Collaborate with front-end teams using React to deliver complete features. ->DevOps best practices, including Docker , Kubernetes , and AWS for deployment & CI/CD. ->Support high engineering standards through More ❯

direction. Help define and implement end-to-end testing and deployment strategies. 🔧 Tech Stack: Frontend: React (Remix, SSR, and modern frameworks) Backend: Node.js, REST APIs, JSON:API standards Realtime: WebSockets, CRDTs (Yjs) Tooling: Tiptap, ProseMirror, CLI, IDE extensions Infra: CI/CD pipelines, Kubernetes, AWS ✅ What You Bring: ~6+ years building complex products in collaborative, cross-functional teams. Experience working More ❯

such as DevOps (Kubernetes) and Front end development (ReactJS modifications) Experience working with AWS Experience influencing the architecture and design of applications Tech Stack - Python, ReactJS, Kubernetes, APi's, websockets, AWS Contract Python Fullstack Software Engineer | £600-£800/day IR35 Exempt More ❯

Experience building real-time or streaming systems, or systems with very high throughput demands. Experience influencing the architecture and design of applications Tech Stack - Python, ReactJS, Kubernetes, APi's, websockets, AWS Staff Software Engineer | GO/Python | £600-£800/day | Outside IR35 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 ❯

Pre-trade analytics (liquidity/pricing/scenario/what-if) and risk calculation services used in real time on the desk. Low-latency data services and streaming APIs (WebSockets/gRPC etc.) for live market and risk data. High-performance trader-facing UIs: time series views, blotters, RFQ/axe views, portfolio & risk dashboards. End-to-end systems: you More ❯

of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs , websockets, and authentication/security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving infrastructure. Background More ❯

or similar). A proven track record of delivering polished, performant, and elegant user interfaces. Deep appreciation for UI/UX craftsmanship and accessibility. Familiarity with HTTP, REST APIs, websockets, and secure frontend patterns. A creative streak — you think visually and love turning complexity into clarity. Nice-to-haves Experience with 3D or WebGL rendering , or other data-rich visualisations. 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 ❯

experience, tooling, and mentoring. Degree in Computer Science or equivalent experience. Bonus points for: Open source contributions to front-end tooling, design systems, or data-visualisation libraries. Experience with WebSockets, PWAs, offline support, or design-token pipelines. How They Work Speed with craftsmanship: Continuous delivery, short feedback loops, and peer review excellence. Performance first: Time-to-Interactive, bundle size, and More ❯

Full stack Python Developer – Sports betting Hedge fund – London Option to work from home up to 4 days a week or fully remote. Full stack Python Developer is required for a leading provider of sports betting brokerage software worldwide based More ❯

years commercial experience with Flutter 1+ years leading technical teams of 3-5 (will consider mentorship experience) Deep Flutter expertise: architecture, state management, testing, deployment Solid backend integration (REST, WebSockets, microservices) Experience with Firebase, AWS, and CI/CD pipelines This role can offer up to £100,000, requires 4-days per week onsite in central London, and is made More ❯

where engineering excellence and code quality are non-negotiable Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep understanding of front-end architecture, performance 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 ❯

This is an opportunity for a technical problem solving SRE to join a leading global fintech who are currently growing their presence in Europe. Role Responsibilities; Investigate, troubleshoot and diagnose incidents Provide first-third line investigation and diagnosis of incidents More ❯

Your team Swissblock is a proprietary investment fund specializing in systematic trading algorithms and advanced global macro and crypto analytics. Our in-house technology powers a suite of innovative financial solutions, delivering deep market insights and actionable intelligence for professional More ❯

from the ground up. Key Responsibilities: Develop and enhance interactive dashboards for trading and analytics Collaborate directly with trading desks and stakeholders Build and maintain React-based UIs, leveraging WebSockets for real-time data Contribute to framework design and implementation (VP) Provide technical leadership and deeper FX/e-trading expertise Must-Have Skills: Strong React development experience (WebSockets a More ❯

Youll Do Build IoT and cloud software for charger connectivity and monitoring Create telemetry and data pipelines (PLC, CAN) Enable secure remote control and bi-directional communication (MQTT/WebSockets) Deliver OTA firmware updates and REST APIs (OCPP/OCPI) Develop secure, scalable cloud infrastructure (AWS IoT, Azure, etc.) Collaborate closely with hardware and IoT partners to integrate systems end … years experience in IoT software, cloud integration or embedded systems Strong skills in PLC, CAN, Modbus or similar protocols Proficiency in API and cloud development (AWS/Azure, MQTT, WebSockets) Knowledge of secure firmware updates and encryption (TLS, AES) Comfortable working autonomously in a fast-moving start-up environment Background in EV charging, energy storage or industrial automation is a More ❯