1 to 25 of 127 RESTful Jobs in London

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

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
Responsibilities Design & Develop: Create and maintain full stack applications using React JS and C#.NET Core. Build Services: Develop high-performance backend services and RESTful APIs with a focus on scalability and resilience. Create UI Components: Craft responsive and modular UI components using React JS and modern JavaScript/TypeScript patterns. ...

Senior Developer

Hiring Organisation
Reed.co.uk
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 per annum
APIs, or platforms into software solutions. Domain experience in Recruitment Technology, HRTech, or closely related fields is a must. Proficient in software architecture, microservices, RESTful API design, and cloud-native development (AWS, Azure, or GCP preferred). Experience with CI/CD pipelines, automated testing, and DevOps practices. Solid grasp ...

Senior FullStack Developer

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
advantageous Key Responsibilities Design, develop, and maintain full stack applications using React JS , C#.NET Core , and supporting technologies. Build high-performance backend services, RESTful APIs, and microservices with focus on scalability, maintainability, and resilience. Develop responsive, modular, and accessible UI components using React JS and modern JS/TS patterns. ...

Senior FullStack Developer

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £650 per day
advantageous Key Responsibilities Design, develop, and maintain full stack applications using React JS , C#.NET Core , and supporting technologies. Build high-performance backend services, RESTful APIs, and microservices with focus on scalability, maintainability, and resilience. Develop responsive, modular, and accessible UI components using React JS and modern JS/TS patterns. ...

Java Backend Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract, Work From Home
those whose recent experience is primarily in support, coordination, architecture-only, or line management. Key Responsibilities Design, develop, and deploy scalable backend services and RESTful APIs Build and maintain microservice-based architectures Write clean, maintainable, and well-tested code Contribute to code reviews and engineering best practices Work collaboratively within ...

Senior Software Engineer

Hiring Organisation
Espire Infolabs Limited
Location
London, United Kingdom
Employment Type
Permanent
full stack Strong proficiency in at least two languages (e.g. Python, TypeScript, C#, Node.js), with confidence picking up others as needed Solid grounding in RESTful API design, microservices architecture, and cloud-native development (Azure preferred) Proven experience with CI/CD pipelines, (Docker/Kubernetes), and DevOps practices Strong ...

AWS Architect

Hiring Organisation
ECM Selection Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
knowledge of Infrastructure-as-Code; DevOps, and experience with NoSQL databases. Demonstrably good coding skills, ideally in Java and/or Python; knowledge of RESTful APIs and service integration patterns and security frameworks such as OAuth 2.0 or OpenID Connect (OIDC). You must have full, existing, and unrestricted right ...

Senior Full Stack Engineer

Hiring Organisation
Prolo
Location
City of London, London, United Kingdom
engineering experience Strong proficiency in Python (3.10+) with deep understanding of async programming Experience with Poetry or similar Python dependency management tools Experience building RESTful APIs and micro-services Solid understanding of database design and optimisation (both SQL and NoSQL) Experience with graph databases (Neo4j preferred) or willingness to learn ...

Full Stack Engineer

Hiring Organisation
Prolo
Location
City of London, London, United Kingdom
engineering experience Strong proficiency in Python (3.10+) with deep understanding of async programming Experience with Poetry or similar Python dependency management tools Experience building RESTful APIs and micro-services Solid understanding of database design and optimisation (both SQL and NoSQL) Experience with graph databases (Neo4j preferred) or willingness to learn ...

Senior Software Engineer .Net

Hiring Organisation
Apprize Technology Solutions
Location
London Area, United Kingdom
stack software engineering experience with strong proficiency in at least two languages such as Python, TypeScript, C#, or Node.js Must have solid expertise in RESTful APIs, microservices, cloud-native development (Azure preferred), Docker/Kubernetes, and CI/CD pipelines Expected to design, build and own end-to-end technical ...

Backend Software Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, UK
Employment Type
Full-time
Security Clearance (SC) Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Strong experience building scalable backend and RESTful services using Java (Spring Boot) Ideally Java v21 (or very recent versions) Postgres (or other relational SQL databases) with a solid understanding of schema design ...

Backend Software Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
Security Clearance (SC) Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Strong experience building scalable backend and RESTful services using Java (Spring Boot) Ideally Java v21 (or very recent versions) Postgres (or other relational SQL databases) with a solid understanding of schema design ...

Senior Java Software Engineer

Hiring Organisation
Arrows
Location
City of London, London, United Kingdom
working in pair programming environments Experience working with cloud technologies, preferably AWS Solid understanding of containerisation and distributed systems Experience with PostgreSQL, Kafka, and RESTful APIs Familiarity with CI/CD tooling and engineering best practices Experience with monitoring and observability tools such as Prometheus, Grafana, or Kibana Knowledge ...

Python Developer

Hiring Organisation
Radley James
Location
City of London, London, United Kingdom
/NoSQL databases. Proven experience working in fast-paced environments, ideally within trading, financial services, or high-frequency environments. Proficiency in developing RESTful APIs, microservices, and working with cloud-based architectures (AWS, GCP, or similar). Expertise in testing frameworks, CI/CD, and containerization technologies such as Docker ...

Senior Software Developer

Hiring Organisation
Aristocrat
Location
Greater London, United Kingdom
Employment Type
Full Time
hands-on experience building backend systems using Java and Spring Boot Experience designing and implementing distributed systems or service-oriented architectures Solid understanding of RESTful APIs and backend service design principles Strong problem-solving skills and ability to work independently on complex technical challenges Effective communication skills and ability ...

Principal Technical Lead

Hiring Organisation
RSSB
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
lead on a complex, multi-service platform, with direct responsibility for technical delivery quality and team output. Extensive C# and ASP.NET Core experience, including RESTful APIs, dependency injection, domain modelling, integration patterns, and performance considerations. Experience with Entity Framework Core code-first migrations and data modelling. Strong front-end engineering ...

Principal Technical Lead

Hiring Organisation
RAIL SAFETY AND STANDARDS BOARD
Location
London, UK
Employment Type
Full-time
lead on a complex, multi-service platform, with direct responsibility for technical delivery quality and team output. Extensive C# and ASP.NET Core experience, including RESTful APIs, dependency injection, domain modelling, integration patterns, and performance considerations. Experience with Entity Framework Core code-first migrations and data modelling. Strong front-end engineering ...

Senior OMS Developer (Java)

Hiring Organisation
EC1 Partners
Location
London Area, United Kingdom
Management Systems (OMS) • Experience within trading, investment management, or capital markets environments • Solid understanding of multi-threaded systems and low-latency architectures • Experience with RESTful APIs and distributed systems • Strong problem-solving skills and attention to detail Desirable Skills • Experience with Spring/Spring Boot • Knowledge of messaging technologies (e.g. ...

Specialised Engineer HCL Commerce

Hiring Organisation
Vallum Associates Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £550 per day
platform improvements Essential Skills & Experience Strong hands-on experience with HCL Commerce/IBM WebSphere Commerce architecture Proficiency in Java, J2EE, GraphQL, and RESTful APIs Experience with Spring/Spring Boot backend development Strong knowledge of relational databases, particularly Oracle Experience with tools such as Eclipse, RAD, Git, Splunk, Dynatrace ...

Senior Java Application Engineer

Hiring Organisation
Experis
Location
Wembley, England, United Kingdom
contribute to Dockerfiles and GitHub Actions workflows as a developer who appreciates the operational path their code follows. API & Integration Expertise Deep knowledge of RESTful API design, OAuth2 authentication flows (including FusionAuth integrations), and DMARC‐compliant transactional email delivery using SendGrid. Testing Discipline & Standards A non‐negotiable focus on automated ...

Senior Java Developer (Low-Latency Payments Systems)

Hiring Organisation
RE Partners
Location
London Area, United Kingdom
hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput backend systems using Core Java and SpringBoot. Build and maintain RESTful APIs and microservices that power secure payment workflows. Work with XML-based messaging standards and protocols commonly used in financial transactions. Deploy, monitor, and scale applications ...

Senior Software Engineer

Hiring Organisation
TRITANIUM
Location
London Area, United Kingdom
APIs Strong understanding of Clean Architecture , CQRS , ideally with MediatR Experience with communication protocols: TCP/IP, UDP, REST, gRPC, SignalR Familiarity with RESTful API design Experience with event‐driven architectures and tools like RabbitMQ or Kafka Strong background in microservices and containerisation (Docker, Kubernetes) Proficiency with databases such ...

Lead Software Engineer

Hiring Organisation
Harrington Starr
Location
London Area, United Kingdom
resilient, scalable systems that automate complex operational workflows. Key responsibilities: Architect, develop, and maintain scalable backend systems using Node.js and TypeScript Design and build RESTful APIs, microservices, and event-driven architectures Integrate backend services with AI/LLM workflows and automation systems Build reliable data pipelines, background jobs, and operational ...

Senior .Net Developer

Hiring Organisation
LANCESOFT LTD
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
solutions in a regulated environment. Key Responsibilities Design, develop, and maintain C#/.NET applications supporting Risk or Securities Lending platforms Build and consume RESTful APIs to integrate with upstream/downstream systems Implement scalable, testable, and maintainable object oriented code following best practices Contribute to risk workflows including exposure ...

Senior .Net Developer

Hiring Organisation
Lancesoft Ltd
Location
Westminster, Greater London, UK
solutions in a regulated environment. Key Responsibilities Design, develop, and maintain C#/.NET applications supporting Risk or Securities Lending platforms Build and consume RESTful APIs to integrate with upstream/downstream systems Implement scalable, testable, and maintainable object oriented code following best practices Contribute to risk workflows including exposure ...