26 to 50 of 58 WebSockets Jobs in England

communication and stakeholder management skills. Comfortable working in an agile, fast-moving environment from proof-of-concept to MVP. Preferred Qualifications Experience with Real Time messaging and streaming data (WebSockets, Kafka). Exposure to f inancial APIs, market data feeds, or AI chat integrations. Strong grasp of design systems and responsive design principles. If you're a freelance UX developer More ❯

customer reasons. Help drive DevOps maturity: automate deployments, and monitor systems. Collaborate with stakeholders to influence product direction and operational strategies. Company Tech Stack: Backend: PHP(Laravel) APIs (OAuth) WebSockets Node.js (used in Electron apps) Frontend: PHP server-side rendering (Laravel Blade), Vue.js, Bootstrap, JavaScript Databases: MySQL (RDS), MSSQL Redis (ElasticCache) Heavy data compliance: audit logging, long-term data retention 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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

Contribute to platform modernisation, helping define long-term technology direction Key Requirements: Strong expertise in React, TypeScript, and modern web technologies Proven experience building real-time, event-driven systems (WebSockets, Web Workers, asynchronous data flow) Solid background in backend development, ideally with Java, REST APIs, and messaging frameworks Deep understanding of architecture and system design, including distributed and low-latency More ❯

understanding of front-end architecture principles, including state management patterns (such as Redux or Context API) and responsive design techniques for optimal usability across devices. Hands-on familiarity with WebSockets, real-time messaging protocols, REST APIs, and micro-frontend architectural patterns to enable seamless system integration. Experience in financial services ideally trading environment Excellent communication skills A track record of More ❯

time, data-intensive user interfaces (e.g., chat applications, financial dashboards, real-time streaming apps). ? Strong experience integrating with backend APIs and services, particularly consuming real-time data via WebSockets, gRPC, or similar protocols. ? Proficiency in translating high-fidelity designs (e.g., Figma, Sketch) into beautiful, performant, and maintainable code. ? A strong understanding of Android UI performance optimization, memory management, and 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 ❯

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 ❯

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 ❯

API-first architecture, and software design patterns. Proficiency in JavaScript (React/Next) or another backend language, with knowledge of Ruby as a plus. Experience with Pub/Sub, websockets, and Server-Sent Events (SSE). A strong product engineering mindset - able to translate requirements into technical designs and ship features end-to-end. The Interview Process Initial Chat with More ❯

Do you love building scalable applications and working with modern PHP frameworks? Are you excited by the chance to develop a fast-growing SaaS platform and see the direct impact of your work? We’re supporting a dynamic tech-driven More ❯

Senior Test Engineer - Trading Technology Overview A leading financial services organisation is seeking a talented Senior Test Engineer to join their dynamic Trading Technology team. The firm operates globally, offering real-time trading and risk management platforms that underpin complex More ❯

Senior Test Engineer - Trading Technology Overview A leading financial services organisation is seeking a talented Senior Test Engineer to join their dynamic Trading Technology team. The firm operates globally, offering real-time trading and risk management platforms that underpin complex More ❯

Front End Developer - FinTech - Newcastle (Tech stack: Front End Developer, React, TypeScript, Websockets, SignalR, Containers, Orchestration, UX, Usability, Programmer, Developer, Architect, Front End Developer) Our client is a cutting-edge FinTech company with a reputation for innovation and excellence. They design and build advanced trading and analytics platforms used globally by some of the world's leading financial institutions. With … or higher degree in Computer Science (essential). Strong recent experience with modern front-end frameworks, particularly React, alongside TypeScript. Background working with real-time communication tools such as Websockets or SignalR. Familiarity with containerisation and orchestration platforms. A genuine enthusiasm for creating clean, usable, and engaging interfaces. The confidence to collaborate across different teams and engage directly with users More ❯

OTC Trading Software 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 team. We are More ❯