26 to 50 of 109 WebSockets Jobs in London

/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 ❯

/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 ❯

/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 ❯

/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 ❯

/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 ❯

/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 ❯

/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 ❯

/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 ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

and co-designing production-grade RESTful APIs ideally with an API-first approach. Strong knowledge of frontend polling and other async interactions patterns such as: polling/SSE/WebSockets for long-running tasks, optimistic updates, progress states, idempotent actions. Proficiency in integration, component and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps More ❯

Android or iOS) with 3+ years of commercial experience Expert in Flutter architecture, state management, widget testing, and store deployment workflows Experience with REST APIs, real-time communication (e.g., WebSockets), and microservices integration Strong cloud infrastructure knowledge—Firebase and AWS Solid understanding of relational and NoSQL databases Proficient in TDD (and familiar with BDD) within Flutter environments Experienced with tools More ❯

Android or iOS) with 3+ years of commercial experience Expert in Flutter architecture, state management, widget testing, and store deployment workflows Experience with REST APIs, real-time communication (e.g., WebSockets), and microservices integration Strong cloud infrastructure knowledge—Firebase and AWS Solid understanding of relational and NoSQL databases Proficient in TDD (and familiar with BDD) within Flutter environments Experienced with tools More ❯

Android or iOS) with 3+ years of commercial experience Expert in Flutter architecture, state management, widget testing, and store deployment workflows Experience with REST APIs, real-time communication (e.g., WebSockets), and microservices integration Strong cloud infrastructure knowledge—Firebase and AWS Solid understanding of relational and NoSQL databases Proficient in TDD (and familiar with BDD) within Flutter environments Experienced with tools More ❯

Android or iOS) with 3+ years of commercial experience Expert in Flutter architecture, state management, widget testing, and store deployment workflows Experience with REST APIs, real-time communication (e.g., WebSockets), and microservices integration Strong cloud infrastructure knowledge—Firebase and AWS Solid understanding of relational and NoSQL databases Proficient in TDD (and familiar with BDD) within Flutter environments Experienced with tools More ❯

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 ❯

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 ❯

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 ❯