1 to 25 of 95 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 Software Engineer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £85,000 per annum, Inc benefits
Design, and QA to deliver high-value solutions Design and optimise CI/CD pipelines to enable efficient, reliable software delivery Build and maintain RESTful APIs and distributed systems with a focus on scalability and performance Own complex technical challenges, from design through to production support and optimisation Promote ...

Senior Developer

Hiring Organisation
Reed.co.uk
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 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. ...

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 ...

Lead Full-Stack Java Developer - SC Cleared

Hiring Organisation
Searchability NS&D
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £95,000 per annum
. Strong Java and Spring Boot development experience. Proven experience delivering full-stack solutions (e.g. React, Angular, or Vue). Good knowledge of microservices , RESTful APIs , and containerisation (Docker/Kubernetes). Experience working with AWS or other cloud environments. Understanding of secure software design and deployment in government ...

Senior Full Stack Engineer

Hiring Organisation
Prolo
Location
London Area, 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 ...

Software Engineer - Golang Developer - AWS - Kubernetes - Financial Services

Hiring Organisation
Rothstein Recruitment Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
systems and services, particularly in areas such as trading platforms, investment management, and risk analytics. Experience in building microservices architectures and working with APIs (RESTful, gRPC, etc.) to integrate various systems. Strong knowledge of containerization (Docker) and continuous integration/deployment (CI/CD) practices. Experience with database systems (relational ...

Senior Back End Developer

Hiring Organisation
KodeLab
Location
London Area, United Kingdom
such as Nest.js, Express.js, or FastAPI . Database Mastery – Strong SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) expertise. API Development & Security – Experience in building RESTful & GraphQL APIs , JWT authentication, OAuth, and cryptographic security. Scalability & Optimization Skills – Ability to optimize database queries, caching strategies, and event-driven architectures (Kafka, RabbitMQ) . ...

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 Web Application Developer (Full Stack)

Hiring Organisation
CPS Group (UK) Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £525/day
Entity Framework * HTML5, CSS3, JavaScript, jQuery, and React experience. * Strong knowledge of Object-Oriented Programming, SOLID principles, and common design patterns. * Experience working with RESTful API design and integration; SOAP WebServices and XML/XPath * Skilled in using IoC containers (Autofac, Ninject) and unit testing frameworks * Experienced with CI/ ...

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 ...

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
critical microservices programme.Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Active Security Clearance (SC) Strong capability building scalable RESTful APIs and backend services in Java (Spring Boot): Postgres (or other relational SQL databases) with solid understanding of schema design and SQL Docker: Confident containerising ...

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 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 ...

Staff Engineer

Hiring Organisation
Tata Consultancy Services
Location
London Area, United Kingdom
across Java, microservices, performance engineering, and distributed systems. Backend Engineering Build and optimize backend services using Java (Java 17+), Spring Boot/Micronaut Design RESTful APIs, asynchronous messaging systems, and microservices. Own performance, reliability, monitoring, and observability for critical services. Ensure high engineering standards: code quality, design reviews, testing ...

Head of Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
.NET Framework, with deep proficiency in C#, applying best practices in design, implementation, testing, and performance optimisation. API development : experience building and supporting RESTful and SOAP APIs, including authentication, versioning, and documentation. Data layer proficiency : solid experience with SQL Server (queries, stored procedures, optimisation) and general database design. Cloud deployment ...

SC Java Developer

Hiring Organisation
Sanderson Government and Defence
Location
South East London, London, United Kingdom
Employment Type
Permanent
Salary
£60,000
contribute to API development, containerised applications, and cross-functional engineering initiatives. Must-Have Skills Strong commercial experience with Java Hands-on expertise with RESTful APIs Proficiency in Spring Boot Experience working with Docker Solid understanding of Java interfaces and object-oriented design Must be eligible for SC Clearance Nice ...

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 SharePoint Developer and Administrator

Hiring Organisation
Ryder Reid Legal Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Develop and maintain SharePoint Online intranet structures including architecture, navigation, branding, and content design. Integrate SharePoint with internal systems and third-party platforms using RESTful APIs and Microsoft Graph. SharePoint Administration & Operations Administer both SharePoint SE (on-prem) and SharePoint Online environments. Manage updates, cumulative patches and platform maintenance. Monitor ...

Server-Side Java/AWS engineer

Hiring Organisation
Harvey Nash
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £80,000 per annum
critical systems that support transaction reporting across EMEA/APAC. What you'll do: Build scalable microservices using Java (Spring Boot) on AWS Develop RESTful APIs and cloud-native solutions Work on regulatory reporting platforms with real business impact Collaborate closely with product and business teams Tech stack: Java (17+ ...

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 ...