1 to 25 of 157 REST Jobs in London

Senior Full Stack Developer (React & C#.NET)

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
proficiency in React.js, JavaScript/TypeScript, Redux/RTK, and modern UI patterns, develop framework is essential Back-end: Expertise in C# .NET Core, REST APIs, and microservices-based development is essential Python (pyspark): Experience with data pipelines and analytics is a plus. Power BI: Familiarity with developing dashboards ...

Oracle Developer

Hiring Organisation
GIS Recruiter Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
£45000 - £55000/annum + Benefits (Neg)
ongoing maintenance of applications Skills & Experience Required Oracle Database development (SQL/PL-SQL) SQL Server Experience designing and consuming RESTful APIs/REST API services Proficiency in at least two of the following programming languages: Python Java JavaScript .NET (C#) Experience working in Agile/Scrum environments Excellent problem ...

Full Stack Engineer

Hiring Organisation
FryerMiles Recruitment
Location
London, UK
Engineer C# (preferably .NET), Python and JavaScript/Typescript Proven experience developing front end applications using React, Vue xehkeey or Angular Good knowledge of REST API’s, microservices and distributed systems Experienced working with SQL and NoSQL databases Understanding of CI/CD pipelines Azure, AWS or GCP Experienced working ...

Principal Software Engineer

Hiring Organisation
83zero Ltd
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 110,000 - 130,000 Annual
Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST APIs, microservices architecture, and event-driven systems Cloud experience with Azure with knowledge of serverless and containerised architectures Solid understanding of DevOps practices, CI/ ...

Principal Software Engineer

Hiring Organisation
83zero Ltd
Location
London, Lime Street, United Kingdom
Employment Type
Permanent
Salary
£110000 - £130000/annum
Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing and building scalable, distributed systems Strong experience with REST APIs, microservices architecture, and event-driven systems Cloud experience with Azure with knowledge of serverless and containerised architectures Solid understanding of DevOps practices, CI/ ...

Vice President, Fullstack Software Engineer (Java/React)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
TypeScript. Solid experience with object‐oriented design and applying standard design patterns Experience designing, building, and deploying scalable microservices using API‐first principles with REST and/or gRPC. A strong appreciation for best practices, attention to detail, and building secure and stable systems. A collaborative mindset, with a drive ...

Senior Java Developer

Hiring Organisation
Response Informatics
Location
Croydon, Surrey, South East, United Kingdom
Employment Type
Permanent
Salary
£70,000
hands-on Java 8+ development experience with strong Spring, Spring Boot & Hibernate Strong understanding of Microservice architecture Experience building web services and APIs on REST Strong understanding of unit & integration tests, following TDD/BDD Experience using test frameworks like Junit, Mockito, PowerMockito & Wiremock Experience and understanding of CICD pipeline ...

Senior Integration Engineer (Azure)

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £600 per day
lasting legacy by actively mentoring our permanent engineering team. What You Bring Integration Expertise: 5+ years of software development experience building robust APIs (REST, SOAP, JSON, XML) using C#, .NET, JavaScript, or Python. Azure Mastery: Deep, proven knowledge of Azure Integration Services, including API Management, Logic Apps, Service Bus, Azure ...

Java Developer - Java Frameworks, SC Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Croydon, London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £475/day
Clearance Desirable Skills React Next.js Experience working within Agile delivery teams Responsibilities Develop backend services using Java and Spring Boot Build and maintain REST APIs Work with AWS cloud infrastructure Contribute to microservices and containerised deployments Support delivery of new system builds (greenfield) Collaborate with cross-functional teams ...

Principal Software Engineer (Payments)

Hiring Organisation
X4 Technology
Location
City of London, London, United Kingdom
pipelines and cloud infrastructure Mentor developers and promote engineering best practices Tech Stack: Frontend: TypeScript, JavaScript, (React/Angular), HTML5, CSS3 Backend: Python REST APIs Data: MySQL, PostgreSQL, Redis Cloud & DevOps: AWS, Docker, CI/CD, Kubernetes (nice to have) Architecture: API design, OAuth/JWT authentication, queues, webhooks, payment ...

Senior Automation QA Engineer (Data Engineering)

Hiring Organisation
IntaPeople
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 450 - 500 Daily
Experience Strong background in automation testing for microservices based architectures. Hands on experience building automation frameworks using Java or similar languages. Solid experience testing REST APIs, backend services, and service to service integrations. Proven experience validating data engineering pipelines (ETL/ELT, batch jobs, scheduled data builds). Strong ...

Senior Automation QA Engineer (Data Engineering)

Hiring Organisation
IntaPeople
Location
Remote, Sutton South, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day
Experience Strong background in automation testing for microservices‑based architectures. Hands‑on experience building automation frameworks using Java or similar languages. Solid experience testing REST APIs, backend services, and service‑to‑service integrations. Proven experience validating data engineering pipelines (ETL/ELT, batch jobs, scheduled data builds). Strong ...

Data Engineer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £560 per day
platforms and services. Maintain data quality, security, and compliance across workflows. What you'll bring: Strong programming skills in Java. Hands-on experience developing REST APIs or microservices with Spring Boot. Experience containerising applications with Docker. Understanding of relational and NoSQL databases. Familiarity with modern data architectures (ETL/ ...

Lead Dynamics 365 Developer and Support

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Permanent
Salary
£85,000
customisation. Hands-on with Power Platform including Power Apps, Power Automate, Power BI, and Dataverse . Strong integration skills with Azure Logic Apps , REST/SOAP APIs , and KingswaySoft . Experience with CI/CD , DevOps , and GIT version control. Proficient in SQL , SSIS , and Azure Data Factory (ADF) . ...

Lead Dynamics 365 Developer and Support

Hiring Organisation
Salt Search
Location
London, UK
configuration and customisation. Hands-on with Power Platform including Power Apps, Power Automate, Power BI, and Dataverse. Strong integration skills with Azure Logic Apps, REST/SOAP APIs, and KingswaySoft. Experience with CI/CD, DevOps, and GIT version control. Proficient in SQL, SSIS, and Azure Data Factory (ADF). ...

Full Stack Engineer /Software Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£60 - £80/hour Negotiable
Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud & DevOps: Kubernetes (BKS), AWS, and advanced observability (Metrics, Dashboards, Alerts). What You Will Do End-to-End Ownership: Own the design ...

Full Stack Engineer /Software Engineer

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£60.00 - £80.00 per hour
Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud & DevOps: Kubernetes (BKS), AWS, and advanced observability (Metrics, Dashboards, Alerts). What You Will Do End-to-End Ownership: Own the design ...

Back End Engineer

Hiring Organisation
Zuma Labs
Location
Greater London, England, United Kingdom
trading/finance experience. Experience with writing unit and integration tests and maintaining CI/CD pipelines. Preferred Qualifications & Experience Experience with GraphQL or REST API development. Knowledge of asynchronous programming, message queues, or real-time streaming architectures. Familiarity with cloud platforms (AWS, GCP, Azure) and container orchestration (Kubernetes/ ...

Automation QA Analyst

Hiring Organisation
Vallum Associates
Location
City of London, London, United Kingdom
automation testing using Selenium/Playwright/Cypress Proficiency in programming languages such as Java, Python, or C# Experience with API testing (Postman, REST Assured, or similar) Knowledge of testing frameworks (TestNG, JUnit, Pytest, etc.) Familiarity with CI/CD tools (Jenkins, Azure DevOps, GitHub Actions) Good understanding of SDLC ...

SC Cleared Salesforce Developer

Hiring Organisation
Experis
Location
London, UK
years of unbroken UK residency. Nice to have: Experience with Agile methodologies and version control systems like Git. Knowledge of Salesforce APIs (REST, SOAP), Einstein, and AI features. Familiarity with DevOps tools such as Azure DevOps. Salesforce certifications (e.g., Salesforce Developer, Technical Architect). Knowledge of ITIL framework and service ...

Lead Developer AI

Hiring Organisation
Datatech Analytics
Location
London, United Kingdom
Employment Type
Permanent
capability Tech environment - Not set in Stone Frontend: React, Next.js, TypeScript (or similar) Backend: Node.js (Express, NestJS) or Python (FastAPI, Django) (or similar) APIs: REST, GraphQL (or similar) Databases: PostgreSQL, MongoDB (or similar) AI/Data: Experience integrating AI/ML features via APIs (e.g. OpenAI, Anthropic or similar) Exposure ...

Senior Full Stack Developer

Hiring Organisation
Glite Tech
Location
London Area, United Kingdom
decomposition principles, and resolving monolith vs. microservices trade-offs. Experience with SQL and NoSQL databases. Understanding of best practices in building scalable mobile APIs (REST, HTTPS, etc.). Good principles of security management (secrets, protocols, etc.). Experience with some Python web frameworks (Django, Flask, FastAPI, etc.). Desirable Skills ...

IT Development Team Lead (Full Stack)

Hiring Organisation
Euro Car Parks
Location
Central London, London, United Kingdom
Employment Type
Permanent
DevOps CI/CD processes, Service bus Architecture, Microservices, Functions, Web apps, IAC Experience with AI driven development tools such as Claude Experience developing REST API-driven mobile first web applications Experience of frontend application development, with a focus on React.js, Next.js and TypeScript Jira, Bitbucket, Git Flow, Confluence, Azure ...

Full Stack Developer - .Net React

Hiring Organisation
Youngs Employment Services
Location
Hammersmith and Fulham, Greater London, Ravenscourt Park, United Kingdom
Employment Type
Permanent
Salary
£50000 - £75000/annum Bonus + Bens
/AKS deployment, Azure Service Bus, Blob Storage SQL Server — T-SQL, EF Core migrations, query optimisation Azure DevOps — Repos, Boards, Pipelines, Test Plans REST API design and OpenAPI/Swagger documentation This is an exciting time to be joining our client with salary will be based on experience ...

Senior Full Stack Engineer

Hiring Organisation
Access Computer Consulting
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 - 440 Daily
React, Kubernetes & Docker. Experience in building responsive, component based user interfaces using modern front end frameworks. Hands on expertise in API design and development (REST/JSON), including versioning and backward compatibility. Experience with UI testing, component testing, and front end build tooling. Experience in CI/CD pipelines, GitOps ...