1 to 25 of 39 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. ...

Front Office Java Developer

Hiring Organisation
Albany Beck
Location
City of London, London, United Kingdom
high-throughput systems. Experience with the following technologies: Spring Boot/Spring Framework Messaging technologies such as Kafka, Solace, Tibco, JMS, or MQ RESTful APIs and service-oriented architectures Microservices and event-driven architectures Maven or Gradle Git and modern CI/CD pipelines Linux/Unix environments ...

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 ...

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 ...

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 .NET Engineer

Hiring Organisation
Whitehall Resources
Location
City of London, London, United Kingdom
modernization where needed. • Implement comprehensive observability (metrics, distributed tracing—OpenTelemetry) and SLOs for critical services. Key Skills: • .NET Expertise: .NET 8, C#, ASP.NET Core, RESTful APIs, background jobs, async programming, dependency injection, unit/integration testing frameworks. • Security Concepts: OWASP Top 10/ASVS, threat modelling, OAuth2/OIDC ...

Java Fullstack Technical Lead

Hiring Organisation
Capgemini
Location
City of London, London, United Kingdom
leadership role. Strong experience delivering solutions in Agile/Scrum environments. Full‐stack development expertise using Angular and Java. Strong understanding of microservices architectures, RESTful APIs, and cloud platforms (AWS and/or Azure). Experience with automation testing frameworks and performance testing tools. Excellent communication skills with the ability ...

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 ...

Dotnet Developer

Hiring Organisation
LanceSoft UK
Location
City of London, London, United Kingdom
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 ...

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 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 ...

Sr AI Solutions Consultant

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
business automation Platform knowledge with strong technical knowledge of the TotalAgility platform or similar intelligent automation platforms Integration experience with expertise in using APIs, RESTful web services, and Tungsten Automation's SDK to integrate and customize solutions Cloud deployment experience with cloud architecture and deployments, including designing scalable and secure ...

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/ ...

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 ...

Scala Developer (Remote)

Hiring Organisation
Stealth iT Consulting
Location
City of London, London, United Kingdom
functional teams to deliver enterprise‐grade solutions. Key responsibilities: Design, develop and maintain backend services and APIs using Scala and Play Framework . Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. Write well-structured, idiomatic Scala and use functional programming patterns where appropriate. Build ...

Front-End Engineer (React) : Trading : £120-180k plus excellent bonus : London

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
real-time UI updates D3.js, charting libraries, or custom data visualisation Backend languages such as Python, C++, Java, or Go Familiarity with GraphQL, RESTful APIs, or event-driven systems Nice to Have (But Not Required) Exposure to financial markets, trading systems, or time-series data Experience working closely with quantitative ...

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 ...

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 ...

Python Developer

Hiring Organisation
Digisourced
Location
City of London, London, United Kingdom
Agile framework. Key Requirements: Languages/Frameworks: Python (Django, FastAPI, Flask). AWS Ecosystem: Lambda, S3, RDS, DynamoDB, VPC, Step Functions. API Design: RESTful, GraphQL, AppSync. IaC: Terraform or AWS CDK. CI/CD: GitLab Cloud, GitHub Actions, or AWS CodePipeline. Experience: Typically 10+ years of professional cloud engineering experience. ...

Python Developer

Hiring Organisation
Apex Systems
Location
City of London, London, United Kingdom
experience. Technical Skills: Hands-on experience with automated testing, mocking frameworks, and CI/CD pipelines. Experience with the design and implementation of JSON RESTful APIs, including versioning and backward compatibility. Strong understanding and exposure to object-oriented practices and principles. ...

Sr Python Developer

Hiring Organisation
Ampstek
Location
City of London, London, United Kingdom
years) • Strong SQL skills with ability to handle complex queries and large datasets • Experience with Python libraries (Pandas, NumPy) for data processing • Experience building RESTful APIs/services (Flask/FastAPI/Django) • Strong understanding of data structures and performance optimization • Experience working with large-scale data processing and performance ...

Senior Software Engineer

Hiring Organisation
JSS
Location
City of London, London, United Kingdom
Mentor and coach engineers, promoting high standards of code quality and craftsmanship Drive technical decision-making, ensuring scalability, reliability, and performance Design and implement RESTful APIs and microservices architectures Oversee and improve CI/CD pipelines, automation, and deployment strategies Define and champion testing strategies, including unit and integration testing … C#/.NET (or similar technologies) Deep understanding of software engineering principles, including modular architecture and design patterns Proven experience designing and developing RESTful APIs and microservices Experience architecting end-to-end systems across frontend, backend, and data layers Strong knowledge of distributed systems and complex integrations Hands-on experience ...

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 ...

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 ...