22 of 22 WebSockets Jobs in London

Azure), and how front-end and backend services fit together in distributed systems. Strong understanding of front-end performance optimisation , including data streaming (WebSockets, server-sent events, chunked responses). Solid experience with testing strategies (unit, integration, E2E) – Playwright, Cypress or similar tools a plus. Bonus points for experience with ...

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. ...

high- performance trading platform . Work primarily with: TypeScript ( Node. js & React) Monorepo tooling, GitHub, GitHub Actions Jest, Playwright Redis, MS SQL, WebSockets Docker, Kubernetes Observability tools ( Grafana, Prometheus, SonarQube) Take end- to- end ownership of features from design to production. Collaborate closely with platform and DevOps engineers on build ...

high- performance trading platform . Work primarily with: TypeScript ( Node. js & React) Monorepo tooling, GitHub, GitHub Actions Jest, Playwright Redis, MS SQL, WebSockets Docker, Kubernetes Observability tools ( Grafana, Prometheus, SonarQube) Take end- to- end ownership of features from design to production. Collaborate closely with platform and DevOps engineers on build ...

features across the entire stack: Designing, building, and maintaining features for an internal trading platform Working with: TypeScript, Node.js, React, Redis, MS SQL, WebSockets Docker, Kubernetes, GitHub Actions, Jest, Playwright Grafana, Prometheus, SonarQube Taking end‐to‐end responsibility from design → production Collaborating closely with platform/DevOps engineers Enhancing observability ...

programming Strong expertise in modern front-end development (e.g. Vite, Nx, Playwright) Experience building low-latency, event-driven UIs handling large, fast-moving datasets (WebSockets, SSE, Rx) Strong understanding of distributed systems and event-driven architectures Experience with messaging technologies such as Kafka, Solace or RabbitMQ Solid experience building RESTful ...

Apollo Client. Experience building Single Page Applications (SPAs). Reactive mobile UI development experience. Experience with Material UI or similar component libraries. Familiarity with WebSockets and real-time applications. Knowledge of CI/CD pipelines and end-to-end testing frameworks. Exposure to browser APIs and UX/UI design ...

contributing to how the system evolves. Responsibilities: Building and maintaining full-stack features using TypeScript, Node.js and React Working on real-time systems using WebSockets, Redis and SQL Driving high-quality engineering through automated testing (Jest, Playwright) Collaborating closely with DevOps on observability, pipelines and system performance Taking ownership from ...

acceptance tests Comfortable in an agile working environment Self-starter and proactive DESIRED SKILLS: Experience with modern web UI technologies; HTML5, React, RESTful services, Websockets Knowledge of Structured Products (Notes, Warrants, Certificates) BUSINESS KNOWLEDGE Equity Derivatives Regional variations of Products and Trading ...

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 ...

Distributed Systems . Infrastructure: Hands-on experience with Azure (or AWS/GCP) and architecting high-concurrency load balancing. The "Edge": Experience with WebRTC, WebSockets, or real-time audio processing is a massive bonus. Mindset: You prefer a blank canvas to a pre-filled coloring book. You take extreme ownership. ...

existing Python/SQL reporting framework. The AI enablement Engineer will have experience with the following technologies/tools: Docker, Postgres, REST APIs, SFTP, Websockets OOP + Asynchronous Design Patterns PowerQuery/DAX/M Industry standard libraries used in software development within finance (pandas, numpy, scipy etc) MS Graph ...

Nice-to-Haves Experience with search-oriented databases (e.g., ElasticSearch) or vector databases (e.g., ChromaDB) for text and semantic search Real-time foundations with WebSockets, SSE, or CRDT/collaboration-aware system design Server-side rendering knowledge (e.g., Next.js) to support the frontend team during migration Experience with analytics ...

backend development) Knowledge of graph databases (e.g. Neo4j) and workflow orchestration (DAGs) Familiarity with Elasticsearch/OpenSearch and query optimisation Experience building REST APIs, WebSockets , and real-time systems Cloud experience ( Azure preferred ) Interest in solving complex data and system design challenges 💬 If you’re interested in building real-time ...

Apple App Store and Google Play Store - Experience in a small team working independently - Comfortable using BLoC for state management - Experience using WebSockets - Experience working with home automation The perks: - Full autonomy to direct your area of Tewke. - Breakfast in the office every morning before 10am. - Working with an environmentally ...

We have a current opportunity for a React Developer on a permanent basis. The position will be based in London. For further information about this position please apply. - 10+ years engineering; 5+ years building production ...

Frontend Engineer STS Digital (www.stsdigital.io) is a leading regulated digital asset trading firm specialising in OTC trading and market making. While trading is headquartered in Bermuda, technology development is provided by a vibrant global engineering ...

Senior C++ Software Engineer - Systematic Trading 12-month contract - £600 to £850/day (Inside IR35) Global Trading & Supply | High-Performance Systematic Trading Technology As a Senior C++ Software Engineer , you'll work closely with ...

C++ Engineer Certain Advantage are hiring for a C++ Engineer based in London. This role is on an initial contract till the end of the year and is hybrid. The company Were working with an ...

We are working with a pioneering financial technology firm that is building a global institution for digital assets, designed from the ground up for market integrity and efficiency. Their disciplined, first-principles approach underpins everything ...

Senior C++ Engineer Certain Advantage are hiring for a Senior C++ Engineer based in London. This role is on an initial contract till the end of the year and is hybrid. You will play a ...

Role Overview As a Senior C++ Engineer, you will be a member of a small, high performing team responsible for global derivatives algorithmic trading platform. Working closely with technologists, quants and traders to develop our ...