1 to 25 of 43 RESTful Jobs in the City of London

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. ...

FullStack Solution Architect (Exp in RFP/RFI) - London, UK - Fulltime - Hybrid

Hiring Organisation
Capgemini
Location
london (city of london), south east england, united kingdom
skills and technical leadership across front-end (React, Angular, Vue,) Strong developmental skills and technical leadership across back-end (Node.js, Java, Spring Boot, .NET, RESTful APIs microservices), cloud platforms (AWS, Azure, GCP) and CICD tools GitLab, Jenkins Strong experience in responsive design principles Expertise in JavaScript(ES6+)/TypeScript, HTML5 ...

Javascript Developer

Hiring Organisation
Sanderson
Location
City of London, London, United Kingdom
Lambda functions Experience working with Contentful CMS (content modelling, delivery APIs) Familiarity with infrastructure as code Testing experience with Jest and Playwright Understanding of RESTful APIs and microservices principles Comfortable working in an Agile, DevOps environment Proficient with Git and CI/CD pipelines (GitLab preferred) Solid knowledge of HTML ...

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 ...

Software Engineer - Contract

Hiring Organisation
ONMO
Location
City of London, London, United Kingdom
serverless backend services. Proficiency in React with Next.js for frontend development. Proficiency in TypeScript and experience with infrastructure as code using Terraform. Understanding of RESTful APIs and web application architecture. Ability to write clean, readable, and maintainable code. Excellent problem-solving skills and attention to detail. Knowledge of Agile methodologies ...

Senior Java Developer (Low-Latency Payments Systems)

Hiring Organisation
RE Partners
Location
City of London, London, 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 ...

Java Full Stack Developer (Frontend Focus)- Farnborough, UK - Fulltime Hybrid

Hiring Organisation
Capgemini
Location
london (city of london), south east england, united kingdom
databases SQL and ObjectRelational Mapping ORM technologies like JPA Experience with version control systems GitHUb AgileScrum methodologies and CICD practices Understanding of microservices architecture RESTful APIs and other relevant architectural patterns Exceptional analytical skills to troubleshoot complex problems and propose innovative solutions Strong communication skills for effective collaboration with diverse ...

Senior Software Engineer

Hiring Organisation
TRITANIUM
Location
City of London, London, 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 ...

Senior Full Stack Developer (Python) - Networks, Vice President

Hiring Organisation
State Street
Location
london (city of london), south east england, united kingdom
knowledge of full stack application technologies such as message brokers, version control, authentication and authorization controls. · Extensive experience in communication with other systems via restful API's. · Solid experience with of web data formats including JSON and XML · Experience with automating networking technologies a plus. · Familiarity with front ...

Senior Full Stack Developer - 2 days a week in London - £60-80k

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
secure web applications Build backend services using Python (e.g. FastAPI, Flask, or Django) Develop modern frontend applications using React and TypeScript Design and maintain RESTful APIs 5+ years’ experience as a full-stack developer AI & Modern Development Practices (Required) Experience using AI coding tools or assistants ...

Java Multi-threading Developer - Capital Markets

Hiring Organisation
Ad Astra Consultants
Location
City of London, London, United Kingdom
production issues and optimize system performance Must-Have Skills Strong experience in Core Java (8/11+) Strong multithreading and concurrency concepts Experience building RESTful services/APIs Strong SQL skills (queries, data handling) Experience with Spring/Spring Boot framework Understanding of event-driven architecture (Kafka or similar) Domain ...

Mid-Level .NET / Full Stack Developer – Hybrid – £450/day Outside IR35 | C# | Azure | Event-Driven Systems | Payments | API-Driven

Hiring Organisation
VirtueTech Recruitment Group
Location
City of London, London, United Kingdom
month contract Responsibilities Build and maintain .NET services powering a global payments platform Contribute to event-driven microservices running in Azure Develop and maintain RESTful APIs used by internal systems and external partners Collaborate with senior engineers on system design and implementation Write clean, maintainable, and well-tested code Participate ...

Java Fullstack developer (AngularJS, ReactJS) - London, UK - Fulltime - Hybrid

Hiring Organisation
Capgemini
Location
london (city of london), south east england, united kingdom
responsiveness. Your Skills: Essential Skills & Experience Strong development experience with UI Angular AngularJS ReactJS CSS Experience in JAVA Core Java Java EE MultithreadingConcurrency RESTful Development Experience in Springboot Framework Exposure to GitOps Experience with OracleMySQL Mongo DB Test Driven development and automated testing tools like JUnit Cucumber Jasmine JIRA Gradle ...

Engineering Manager - Software & ML

Hiring Organisation
Capital One UK
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
What we're looking for Leadership Excellence: Proven experience leading and supporting software engineering teams to achieve business goals. Technical Breadth: Excellent knowledge of RESTful API development in modern languages (Java, Python, or .Net) and experience with Cloud environments (AWS or Azure). AI Awareness: You aren't necessarily ...

Senior Sharepoint Consultant

Hiring Organisation
Career Legal Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
SharePoint Framework (SPFx) development. Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices. Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph. Solid experience with C# and .NET Framework for backend and integration development. Hands-on experience administering SharePoint on-prem environments, including patching ...

Senior Fullstack Software Engineer

Hiring Organisation
Outsmart Insight
Location
City of London, London, United Kingdom
them into robust, production-ready solutions. What you’ll be doing Designing and maintaining backend services primarily in Python Developing and evolving well-structured RESTful APIs Designing and improving data models across relational (e.g. PostgreSQL) and NoSQL databases Working across the stack where needed, including JavaScript, modern HTML/ ...

Mid-Senior Ruby on Rails Engineer (B2B SaaS | Hybrid | UK)

Hiring Organisation
Transreport
Location
City of London, London, United Kingdom
Rails architecture Extensive experience with PostgreSQL, including performance tuning and complex queries. Experience with background job processing using Sidekiq and Redis. Solid understanding of RESTful API design, JSON serialization, and authentication (e.g., JWT, SSO). Hands-on experience with AWS services and containerised deployments (Docker). Experience troubleshooting and supporting ...

Engineering AI Software Engineer - Vice President - London

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
think critically and creatively. Excellent communication and collaboration skills, with the ability to work effectively in a team environment. Experience of using and developing RESTful web Services Experience or interest in building mission critical and highly available systems Experience of end‐to‐end design and implementation of software products Team ...

Sharepoint Developer & Administrator

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
SharePoint Framework (SPFx) development. - Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices. - Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph. - Solid experience with C# and .NET Framework for backend and integration development. - Hands-on experience administering SharePoint on-prem environments, including patching ...

Senior Backend Engineer

Hiring Organisation
Fruition Group
Location
City of London, London, United Kingdom
Employment Type
Permanent
years' experience in backend software development within a fast-paced, agile environment. Strong proficiency in Python (or similar modern backend language) and experience building RESTful APIs or microservices. Solid understanding of data structures, algorithms, and software design principles. Experience with cloud-based infrastructure (Google Cloud, AWS, or Azure) Passion ...

Senior Pre-Sales Solutions Engineer - Enterprise

Hiring Organisation
Klaviyo
Location
london (city of london), south east england, united kingdom
high-complexity Enterprise deals (6–7 figures) with minimal oversight 5+ years working across modern development stacks, including Python, JavaScript frameworks (Node.js, React), RESTful APIs, SQL, and some exposure to mobile development Familiarity with AI-assisted development tools (e.g. Codex, Claude Code) and emerging patterns such as MCP Strong domain ...

Sharepoint Engineer

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
SharePoint Framework (SPFx) development. - Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices. - Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph. - Solid experience with C# and .NET Framework for backend and integration development. - Hands-on experience administering SharePoint on-prem environments, including patching ...

Senior Software Engineer II - Contacts Team - Java

Hiring Organisation
Wise
Location
london (city of london), south east england, united kingdom
pain-points You enjoy collaborating with others and bringing people together to solve a problem You have experience in designing, deploying and maintaining clean RESTful APIs You believe in and follow best coding practices, code reviews and open feedback You enjoy writing testable code and believe in Test Driven Development ...

Senior Software Engineer I - Backend (Java) - Business Accounting Integrations and Reporting

Hiring Organisation
Wise
Location
london (city of london), south east england, united kingdom
more we do want to hear from you! Strong proficiency in backend programming languages like Java, Python or Go. Expertise in designing and implementing RESTful APIs. In-depth knowledge of distributed systems principles. Experience in designing and optimising distributed architectures is a plus. Demonstrated experience working in product-led companies ...

Mainframe Engineer

Hiring Organisation
Impellam Group
Location
City of London, London, United Kingdom
processing. Strong skills in mainframe transaction management, JCL, and system debugging tools. Familiarity with SOAP, WSDL, JSON, and integration patterns such as SOA and RESTful APIs. Good working knowledge of AWS services, particularly CloudWatch, DynamoDB, and Lambda, including monitoring, troubleshooting, and optimisation. Excellent verbal and written communication skills to effectively ...