1 to 25 of 48 Permanent WebSockets Jobs in the UK excluding London

Senior Software Engineer JBLE1 NI

Hiring Organisation
VANRATH
Location
Belfast, UK
experience with: TypeScript, JavaScript, React and modern front-end technologies Backend development using TypeScript, Java, C# or a similar OOP language REST, GraphQL and WebSockets AWS and cloud-based technologies Microservices and event-driven architecture SQL and NoSQL databases Automated unit, integration and E2E testing Terraform and containerisation CI/ ...

Senior Full-Stack Developer (Bath Area)

Location
Bath, England, United Kingdom
Good understanding of cloud deployment Strong understanding and proven experience working with browsers and web APIs including HTML Canvas, Drag and Drop, SSE, WebSockets, etc. Effective communication skills through written reports and presentations. Ability to version control code using tools such as Git, GitHub and Azure DevOps in a collaborative ...

Senior Full Stack Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
beneficial: TypeScript, JavaScript, React and modern front-end frameworks Backend development using TypeScript, Java, C# or another object-oriented language REST APIs, GraphQL and WebSockets AWS and modern cloud platforms Microservices and event-driven architectures SQL and NoSQL databases Unit, integration and end-to-end testing Terraform and containerisation technologies ...

Full Stack Software Engineer JBLE1 NI

Hiring Organisation
Ocho
Location
Belfast, UK
TypeScript and/or another OOP language such as C# or Java Strong SQL and NoSQL database knowledge REST and GraphQL APIs, and WebSockets Microservices architecture and containerisation AWS ecosystem including Lambda, Fargate, API Gateway and AppSync Terraform and CI/CD within an enterprise environment Automated testing including unit ...

Full Stack Software Engineer

Hiring Organisation
McGregor Boyall
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
gaining exposure to cutting-edge AWS architecture and engineering best practices. Key Skills: TypeScript React, Redux, React Query HTML5, CSS3, Tailwind REST APIs, GraphQL, WebSockets AWS (Lambda, Fargate, API Gateway, AppSync) Terraform, CI/CD, Containerisation SQL & NoSQL databases Git and automated testing Experience Required: Commercial experience as a Full ...

Software Development Engineer

Location
Cambridge, England, United Kingdom
backend, modern TypeScript with React (or comparable) on the frontend. Designing and working with APIs and real‐time data streams (REST and WebSockets). Comfortable owning deployment and operations across Linux, Docker, CI/CD, cloud (AWS) and on‐premise. Fluency with AI‐assisted (agentic) coding tools, and the judgment ...

Software Engineer

Location
Nottingham, England, United Kingdom
testing. Experience building desktop or mobile apps using web technologies (we use Electron and Capacitor ). Experience with real‐time UI features (e.g. SignalR, WebSockets). Full‐stack capability or backend experience with C#/.NET (or similar) and basic SQL/Azure knowledge. Experience working with design systems ...

Lead Enterprise Technical Architect

Location
Cirencester, England, United Kingdom
optimize AWS cloud environments (EKS, Lambda, RDS, S3, IAM) focusing on resilience, scalability, and cost control. Integration Leadership: Implement REST, event-driven (Kafka), WebSockets, and Salesforce integration patterns. Containers & DevOps: Drive containerized architecture (Docker/Kubernetes) and embed complete CI/CD/DevSecOps lifecycles. Data & AI Architecture: Provide technical ...

Senior Full Stack Software Engineer

Hiring Organisation
Allen Associates
Location
Oxfordshire, Oxford, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum
dashboard development - PostgreSQL and database design - AWS, Azure or equivalent cloud infrastructure - Authentication, permissions and secure application development - Real-time data, alerts, notifications and WebSockets - Mapping, geospatial data or location-based services - Integration with iOS applications, including push notifications and mobile APIs - Git, CI/CD, testing and production deployment ...

VP Lead Engineer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£120,000 - £130,000 per annum
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. ...

Lead Software Engineer, C#, C++, Rust

Hiring Organisation
Corriculo Ltd
Location
Wantage, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
experience with control systems or telemetry is a strong advantage Solid knowledge of distributed systems and real-time streaming technologies such as Kafka or WebSockets, plus familiarity with a range of data persistence approaches including relational, document, and time-series stores Confidence with modern DevOps practices including CI/ ...

Frontend Architect - React AI

Location
Slough, England, United Kingdom
testing, and deployment. Technical Skills & Expertise- Frontend Technologies: Expert-level proficiency in HTML, CSS, JavaScript, React, and TypeScript Real-Time Communication: Strong understanding of WebSockets, Server-Sent Events (SSE), and REST APIs State Management & Programming: Solid experience with state management libraries (e.g., Redux) and reactive programming paradigms Architecture: Strong understanding ...

Senior C++ Engineer – Trading

Hiring Organisation
Certain Advantage
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£700.00 - £750.00 per day
performance derivatives trading across international markets. You'll be responsible for: Developing low-latency exchange connectivity using native exchange APIs and protocols including FIX, WebSockets and HTTP. Building and enhancing high-performance trading algorithms alongside traders and quantitative analysts. Optimising application performance through techniques such as kernel bypass, TLS optimisation ...

IT Software Engineer Developer

Location
Wolverhampton, England, United Kingdom
platforms (App Services, databases, CI/CD pipelines). Experience with RESTful API design in C#/.NET. Exposure to real-time technologies (e.g., WebSockets/Socket.io). About Us GSF Car Parts is one of the UK’s leading automotive parts distributors, supplying thousands of independent garages throughout ...

Senior UI Engineer

Hiring Organisation
McGregor Boyall Associates Limited
Location
South East, United Kingdom
Employment Type
Permanent, Work From Home
Integrate AI-powered features via backend APIs. Optimise startup time, memory usage and overall performance. Manage local state and message history efficiently. Work with WebSockets and other real-time technologies. Troubleshoot complex desktop and production issues. What We're Looking For Strong software engineering background. Proven experience building production Electron ...

Director Data & Analytics API Experience - Data Services

Hiring Organisation
CME- Group
Location
Belfast, UK
Employment Type
Full-time
proficient in Python, with the ability to write clean, idiomatic, and robust code for public consumption. Technical StackEnvironment: Google Cloud Platform (GCP), Apigee. Protocols: WebSockets, REST, GCS.Tooling: Python (Expert), OAuth 2.0, GitHub, Protobuf/Avro, SQL.Company Benefits: Bonus ProgrammeEquity ProgrammeEmployee Stock Purchase Plan (ESPP)Private Medical and Dental coverageMental Health ...

Director Data & Analytics API Experience - Data Services JBLE1 NI

Hiring Organisation
CME Technology Support Services Ltd
Location
Belfast, UK
Python, with the ability to write clean, idiomatic, and robust code for public consumption. Technical Stack Environment: Google Cloud Platform (GCP), Apigee. Protocols: WebSockets, REST, GCS. Tooling: Python (Expert), OAuth 2.0, GitHub, Protobuf/Avro, SQL. Company Benefits: Bonus Programme Equity Programme Employee Stock Purchase Plan (ESPP) Private Medical ...

Director Data & Analytics API Experience - Data Services

Location
Belfast, Northern Ireland, United Kingdom
Python, with the ability to write clean, idiomatic, and robust code for public consumption.**Technical Stack*** Environment: Google Cloud Platform (GCP), Apigee.* Protocols: WebSockets, REST, GCS.* Tooling: Python (Expert), OAuth 2.0, GitHub, Protobuf/Avro, SQL.**Company Benefits:*** Bonus Programme* Equity Programme* Employee Stock Purchase Plan (ESPP)* Private Medical ...

Full Stack Software Engineer

Hiring Organisation
Acacia Green Technologies
Location
EC2M, Broad Street, Greater London, United Kingdom
Employment Type
Permanent
About Acacia Acacia Green Technologies develops and delivers connected technology for hotels and other complex buildings. Our work brings together hospitality television and guest experience platforms, IoT sensors, energy and environmental monitoring, building controls, systems ...

Full Stack Platform Engineer

Hiring Organisation
Hackajob Ltd
Location
Wallingford, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
TypeScript interfaces that make large volumes of telemetry and scan data legible and fast to work with. Real-time data systems: work with WebRTC, WebSockets, gRPC and Zenoh to move live telemetry and video from robot to browser. Backend proficiency: hands-on experience building backend services ...

Senior Software Engineer (Full Stack)

Location
Belfast City District, Northern Ireland, United Kingdom
modern JavaScript frameworks - React + Knowledge of version control systems (Git) + Understanding of cross-browser compatibility + Familiarity with RESTful APIs, GraphQL and Websockets + Experience with CSS pre-processors e.g. Tailwind* Back-end skills + Proficiency in backend programming languages (Typescript and/or other OOP language such … c#/Java) + Strong database knowledge (SQL and NoSQL) + Proficiency with RESTful APIs and GraphQL APIs and Websockets + Experience with microservices architecture + Knowledge of version control systems (Git) + Experience with Terraform + Experience with automated testing + Experience with AWS (AWS Lambda, AWS Fargate, Amazon ...

Senior Software Engineer (Full Stack) JBLE1 NI

Hiring Organisation
TP ICAP Group Services Ltd
Location
Belfast, UK
ReactQuery Experience with modern JavaScript frameworks - React Knowledge of version control systems (Git) Understanding of cross-browser compatibility Familiarity with RESTful APIs, GraphQL and Websockets Experience with CSS pre-processors e.g. Tailwind Back-end skills Proficiency in backend programming languages (Typescript and/or other OOP language such as c# …/Java) Strong database knowledge (SQL and NoSQL) Proficiency with RESTful APIs and GraphQL APIs and Websockets Experience with microservices architecture Knowledge of version control systems (Git) Experience with Terraform Experience with automated testing Experience with AWS (AWS Lambda, AWS Fargate, Amazon API Gateway, AWS AppSync) Worked within an Agile ...

Senior Software Engineer (Full Stack)

Location
Belfast City District, Northern Ireland, United Kingdom
ReactQuery Experience with modern JavaScript frameworks - React Knowledge of version control systems (Git) Understanding of cross-browser compatibility Familiarity with RESTful APIs, GraphQL and Websockets Experience with CSS pre-processors e.g. Tailwind Back-end skills Proficiency in backend programming languages (Typescript and/or other OOP language such as c# …/Java) Strong database knowledge (SQL and NoSQL) Proficiency with RESTful APIs and GraphQL APIs and Websockets Experience with microservices architecture Knowledge of version control systems (Git) Experience with Terraform Experience with automated testing Experience with AWS (AWS Lambda, AWS Fargate, Amazon API Gateway, AWS AppSync) Worked within an Agile ...

Senior Software Engineer

Hiring Organisation
The Portfolio Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 per annum
We're looking for a Senior Software Engineer to join a growing AI team and take ownership of the application and integration layer behind a new generation of AI-powered products. This is a genuinely ...

Android Developer

Location
Dundee, Scotland, United Kingdom
including good disposal discipline. Shipped a hardware integration using a vendor SDK, AIDL service, Bluetooth device or partner‐app Intent. Shipped realtime functionality using WebSockets, including fallback and dead‐connection handling. Worked with custom Dagger scopes or subcomponents with explicit teardown. Exposure to XML/ViewBinding, Room, Crashlytics, payment SDKs ...