1 to 25 of 26 WebSockets Jobs in the South East

level proficiency in JavaScript/TypeScript and modern front-end frameworks (e.g., React, Vue, or Angular). Strong understanding of web technologies (HTML5, CSS3, WebSockets) and browser APIs. Proficient in responsive design and cross-browser compatibility techniques. Knowledge of RESTful APIs and experience integrating front-end with back-end services. More ❯

capabilities. Experience with AI/ML integrations or recommendation systems. Expertise in Matrix/Synapse integration for real-time messaging and communication. Knowledge of WebSockets, real-time messaging, and event-driven architectures. Background in platform monetisation and payment integration. Strong familiarity with access control, authentication (OAuth, JWT), and data privacy More ❯

query optimisation Docker Experience in deploying/troubleshooting applications specifically in a Microsoft Azure environment (including SQL Azure, Web Apps, Service Bus) Azure DevOps Websockets/SignalR experience Experience with FIX protocol Package/Benefits: £100,000 - £120,000 Basic Salary 25 days annual leave A gym membership with one More ❯

with Docker & Kubernetes What You’ll Need: Deep expertise in React, TypeScript & frontend architecture Strong problem-solving & performance optimization skills Experience with GraphQL, REST & WebSockets Excellent communication & ability to align tech with business goals What’s on Offer: Competitive salary + performance bonuses High-impact role with senior stakeholder exposure More ❯

Requirements Commercial experience 2+ years JS, ES6+, Typescript OOP and SOLID principles; Reactjs, Angular, Webpack based web-applications; Familiarity with functional programming REST API, Websockets Reactive Programming (RXJS); Experience of using Test Frameworks (JEST) SCSS/BEM Performance Testing Experience with DevTools and Performance Improvements CI/CD GIT Cross More ❯

Care about inclusion and accessibility - especially for overlooked communities Our tech stack Frontend & Backend React, Nuxt, JavaScript/TypeScript FastAPI, Node.js REST, CRUD, GraphQL, WebSockets Cloud & Infra Azure (core platform) Microservices architecture CI/CD via GitHub Actions & Azure DevOps Infrastructure as Code: Terraform, Bicep, Pulumi, etc. Databases & Messaging PostgreSQL More ❯

Care about inclusion and accessibility - especially for overlooked communities Our tech stack Frontend & Backend React, Nuxt, JavaScript/TypeScript FastAPI, Node.js REST, CRUD, GraphQL, WebSockets Cloud & Infra Azure (core platform) Microservices architecture CI/CD via GitHub Actions & Azure DevOps Infrastructure as Code: Terraform, Bicep, Pulumi, etc. Databases & Messaging PostgreSQL More ❯

Familiarity with the React reconciliation process and browser debugging tools Experience in functional programming and Jest for testing Bonus Experience: Knowledge of RxJS, Node.js, WebSockets, Vite/ESBuild, Docker, and more Familiarity with back-end technologies such as C#, Kafka, and Snowflake This opportunity offers not just career growth, but More ❯

experience (Oracle preferred) Comfort with Unix/shell scripting Agile mindset (Scrum, TDD, pair programming) Passionate problem solver & team player? Frontend experience: React, HTML5, Websockets Knowledge of Structured Products (Notes, Warrants, etc.) Location: Hybrid Be part of a team where your code actually matters. Ready to make an impact? Apply More ❯

/CD, and Agile/Scrum experience Nice to Have: Exposure to cross-asset trading environments (FX, Equities, Fixed Income, etc.) Experience with Node.js, WebSockets, or API gateway patterns Testing frameworks (Jasmine, Karma, Cypress) Contract Details: Inside IR35 6 months rolling contract Up to £800 per day Hybrid More ❯

between business, product, and engineering teams. Nice-to-Have : Experience with Event-Driven Architecture using AWS services (SNS, SQS, EventBridge). Knowledge of GraphQL, WebSockets, or real-time data streaming. Exposure to DevOps and observability practices (e.g., Prometheus, Datadog, AWS CloudWatch, OpenTelemetry). Prior experience in leading distributed engineering teams. More ❯

experience with prior startup exposure Proficiency in Python and JavaScript; familiarity with frameworks such as FastAPI, Express.js, and React Strong understanding of REST APIs, WebSockets, and webhook integrations Experience with Git and GitHub for collaborative development Knowledge of cloud infrastructure, preferably GCP (Cloud Run, App Engine) Willingness to learn quickly More ❯

SQL-based databases with at least 2-3 years of experience . ✔ Real-time Streaming & Low Latency – Implement real-time communication protocols such as WebSockets to create engaging, live betting and gaming experiences. ✔ Code Quality & CI/CD – Lead the coding standards across the backend team, drive unit testing, automated More ❯

quickly and excellent problem-solving skills Technical: · Five years Python core development experience working in an enterprise environment. · Experience in creating libraries, restful services, websockets · Libraries: Polars, Pandas, AMPS, Asyncio, Threading, multiprocessing · Two years’ experience SQL Databases (PostGreSQL desirable) – preferred but not essential More ❯

front-end applications in a fast-paced environment Knowledge of low-latency design principles and performance optimisation Experience with real-time data streaming technologies (WebSockets, FIX, TCP) Familiarity with OpenFin or other containerized front-end frameworks Proven ability to build responsive, high-performance UIs for trading environments Understanding of FX More ❯

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 More ❯

Integrate and display real-time data on interactive maps (i.e. Google Maps, HERE Maps). Ensure smooth and secure network communication using REST APIs, WebSockets, or other relevant protocols. Collaborate with designers, backend developers, and data scientists to improve app features. Debug and optimise app performance, ensuring reliability and information More ❯

years of professional Java or C++ experience. - 3+ years of professional script development experience, preferably Python. - Demonstrated knowledge of network communication, including multicast and WebSockets - Experience with inter-process messaging, micro-service architectures, and API design - Experience with Functional Programming and Immutable Design - Experience with trading systems is desirable, but More ❯

Full Stack UI/UX Developer Core Technical Requirements 1. Strong proficiency in JavaScript and TypeScript Minimum 3+ years of experience writing production-level code Ability to understand, learn and enhance existing codebase is a must 2. Advanced experience with More ❯

and scale game services globally. Incorporate cloud-native technologies for greater efficiency and flexibility. Real-time Communication: Implement real-time communication protocols such as WebSockets to provide responsive and interactive gaming experiences for players, ensuring low-latency and reliability. Database Management: Design, develop, and manage efficient databases (SQL and NoSQL … technologies, with experience deploying and scaling services in the cloud. Real-time Communication Protocols: Expertise in implementing and managing real-time communication protocols like WebSockets for interactive, low-latency gaming experiences. Database Proficiency: Proven experience with database design and management, specifically with PostgreSQL , MongoDB , and other relevant SQL/NoSQL More ❯

Lead Java Developer London, Hybrid A modern fintech company is seeking an exceptional Lead Java Developer to join their innovative and high-performing team. This permanent position offers a competitive salary of up to £130,000, along with hybrid working More ❯

Java Developer - London, Hybrid A modern fintech company is seeking a talented individual to join their dynamic team. This permanent role offers hybrid working arrangements and a competitive salary of up to £75,000. What is in it for you More ❯

About the Role Chapter 2 is working with a top creative agency to seek a Senior Frontend Engineer to help shape and scale the future of our platform. You’ll play a critical role in designing and delivering high-performance More ❯

Senior Infrastructure Engineer London (2 days per week) £140,000 - £150,000 Equity Ownership and Impact! About the Role: We are a forward-thinking AI company dedicated to transforming how individuals and small businesses obtain essential support. Our unique platform More ❯

C++ Exchange Connectivity Engineer - Algorithmic Execution Services – London – Up to £200k base A leading FinTech specializing in algorithmic execution for digital asset markets is seeking a C++ Engineer to join the Core Engineering team in London. You’ll design, build More ❯