1 to 25 of 164 REST Jobs in London

Java Software Engineer

Hiring Organisation
Information Tech Consultants
Location
Greater London, England, United Kingdom
testing and cloud platforms . Key Responsibilities: Design, develop, and maintain backend services using Java and Spring Boot Build and maintain microservices and REST APIs In-depth experience in building RESTful APIs and microservices using Spring Boot. Proficient in using Spring Boot starters, auto-configuration, and Spring Security. Integrated Spring ...

Software Engineer Java/Full Stack Contract-to-Perm London

Hiring Organisation
LMA Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
Excellence: Promote code quality, security best practices, and knowledge sharing within internal tech communities. Technical Requirements Backend: Strong proficiency in Java 17+ , Spring Boot, REST APIs, and Microservices. Frontend: Experience with Angular (with an interest in React/TypeScript for future workstreams). Data: Solid SQL skills (PostgreSQL, MSSQL ...

Senior Engineer

Hiring Organisation
&Dine
Location
London, England, United Kingdom
async patterns, clean architecture Frameworks – Vue/Nuxt (or React/Next.js), component-based development State management – Vuex, Pinia, or equivalent patterns API integration – REST/JSON, error handling, loading states Performance – bundle optimisation, code splitting, rendering strategies Accessibility & UX – semantic HTML, responsive design, usability best practice Testing – unit ...

Principal Software Engineer

Hiring Organisation
Verifone
Location
City of London, London, United Kingdom
highest standards for availability and performance. Required Skills and Experience Needed Programming Languages Java 17 or higher Frameworks and Libraries Spring Boot Spring Web (REST APIs) Spring Data Spring Security with JWT/OAuth2 Architecture & System Design Deep experience designing and operating microservice‐based architectures Strong application of clean code ...

Senior Backend Developer

Hiring Organisation
Skilliantech Ltd
Location
London, United Kingdom
Employment Type
Contract
years of hands-on backend development experience Strong proficiency in Java (8+) and Spring Boot Solid experience designing and implementing microservices architectures Experience with REST APIs , messaging, and asynchronous processing Hands-on experience with cloud platforms (AWS/Azure/GCP) Good experience in SQL and NoSQL databases Familiarity with ...

Senior React Developer

Hiring Organisation
Intec Select
Location
London Area, United Kingdom
Experience Experience deploying apps to the Apple App Store Knowledge of web security best practices and cyber threat mitigation Familiarity with microservices and REST API architecture Exposure to Infrastructure as Code tools (e.g. Terraform) Experience working with real-time trading or data visualisation platforms Package: Initial 12 month contract (high ...

.Net Developer

Hiring Organisation
Wave Talent
Location
City of London, London, United Kingdom
Work within Agile/Scrum delivery teams Required Skills & Experience Strong commercial experience with C# and .NET/.NET Core Experience building and consuming REST APIs Solid understanding of object-oriented design and software engineering principles Experience with SQL Server and relational databases Familiarity with unit testing frameworks (e.g. xUnit ...

Senior Software Engineer

Hiring Organisation
Cyber Guardian Consulting Group, LLC
Location
London Area, United Kingdom
improve observability (logging, alerts, retries) Help shape engineering culture and hiring as we build out the London team Required Qualifications Strong experience working with REST APIs and JSON/XML payloads Proficiency in Python or other backend languages Proficient or experienced with cloud technologies such as AWS, Azure ...

Test Automation Specialist

Hiring Organisation
83zero
Location
City of London, London, United Kingdom
gain experience across a broad technical landscape, including but not limited to: Java, JavaScript, Node.js, Kotlin Spring Boot and RESTful microservices Selenium, Playwright, Cucumber, REST testing NoSQL databases Git-based version control systems Your Profile Essential experience: ISTQB Foundation certification (or equivalent experience) Strong experience in functional, integration, exploratory ...

Software Developer

Hiring Organisation
JAM Recruitment Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 595 Daily
proud of. What You'll Do Design, develop, and deliver high-quality software solutions in Java, React, PostGres, Kafka, ElasticSearch, AWS, Ansible, REST, Docker, API Gateways, JavaScript, Mongo, and SQL. Work hands-on across the full stack while ensuring delivery pipelines, NFRs, and industry best practices are met. Collaborate with ...

Software Developer

Hiring Organisation
JAM Recruitment Ltd
Location
South East London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £595 per day + Umbrella, inside IR35
proud of. What You'll Do Design, develop, and deliver high-quality software solutions in Java, React, PostGres, Kafka, ElasticSearch, AWS, Ansible, REST, Docker, API Gateways, JavaScript, Mongo, and SQL. Work hands-on across the full stack while ensuring delivery pipelines, NFRs, and industry best practices are met. Collaborate with ...

Test Engineer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £435/day
scripting or programming skills (e.g. Java, Python, JavaScript, C#, or similar) Hands-on experience with test automation tools/frameworks (e.g. Selenium, Cypress, Playwright, REST Assured, pytest, etc.) Experience testing APIs and services Familiarity with CI/CD tools (e.g. Jenkins, GitHub Actions, Azure DevOps) Solid understanding of software testing ...

Mainframe Developer with CICS Webservices

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £350 to £400 per day
Requirement (if hybrid): 2 3 days a week Key Skills Required Mainframes CICS Webservices Required Skills Experience working in ZOS Connect EE and DB2 REST, with extensive knowledge in CICS webservices. Development experience using FileAid, Xpeditor, IBM Explorer for z/OS, and Visual Studio. Proficient with SOAP, WSDL ...

💻 C#.NET Core Backend Engineer | 💳 Greenfield Payments Platform | £130,000 + Bonus + Benefits | Hybrid (London)

Hiring Organisation
VirtueTech Recruitment Group
Location
Greater London, England, United Kingdom
teams to build compliant, scalable payment systems 🧩 Driving engineering excellence — CI/CD, testing, observability, and automation across the stack 🧠 Tech Stack 💻 C#.NET Core , REST/gRPC, microservices architecture 📬 Kafka , RabbitMQ , or Azure Service Bus (event-driven systems) ☁️ Azure/AWS , Docker/Kubernetes , IaC, CI/CD ( Azure DevOps ...

AI Director

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Ecosystems Guide the integration of AI/ML pipelines into enterprise‐scale .NET Core applications and service‐oriented architectures. Modernize legacy systems through microservices, REST/gRPC APIs, and event‐driven architectures (Azure Service Bus, Kafka). Implement secure DevSecOps practices—SonarQube, Checkmarx, Vault, Azure API Management—in line with ...

Engineering Manager

Hiring Organisation
Stepstone UK
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Proficient in Web Technologies like HTML, CSS, JavaScript, React.js, Next.js and Node.js, and in event-driven and eventual consistency systems using Kafka, .Net, Java, REST APIs, AWS, Terraform and DevOps Nice to have:experience in data pipping and modelling using SQL, DBT, ETL, Data Warehousing, Redshift and Python, and ecommerce ...

Senior Backend Developer - Fintech & Payment Orchestration(High-Risk Payments, iGaming & Fintech)

Hiring Organisation
Payomatix Technologies
Location
London, UK
Employment Type
Full-time
help architect, build, and optimize this infrastructure. Technology Stack (Current & Expected)Backend Node.js (Primary) NestJS/Express.js Python (Microservices/Risk modules) REST & Webhook-based APIs GraphQL (where required) Database PostgreSQL MongoDB Redis (Caching & Queue management) Messaging & Queues Kafka/RabbitMQ Bull Queue (Node-based background jobs) Cloud & Infrastructure ...

Developer (MS) (18 Months FTC)

Hiring Organisation
London Borough of Barnet
Location
Barnet, London, United Kingdom
Employment Type
Contract
Contract Rate
£56376 - £61653/annum
sources. - Knowledge of core development languages such as PowerShell, JavaScript, C#, Python or similar. - Experience working with data sources including MS SQL, Dataverse, APIs, REST services, JSON/XML and other integration methods. - Strong problemsolving skills and the ability to identify creative solutions to longstanding challenges. - Excellent communication skills, with ...

Lead Developer - Angular/C# - Financial Services

Hiring Organisation
Harvey Nash
Location
City of London, London, United Kingdom
Circa 10+ years’ software development experience, ideally with recent team‐lead responsibilities Strong full‐stack expertise: Angular 16+, C#, .NET 8+, Typescript, SQL Server, REST APIs (Focus on UI Development of modern web apps) Experience with NHibernate/Entity Framework, Git, Jira, Confluence Ability to navigate complex multi‐system environments ...

C#/.Net Developer

Hiring Organisation
Xcede
Location
City of London, London, United Kingdom
continuous improvement initiatives Required Experience 5+ years’ experience in C#/.NET backend development Strong understanding of microservices architecture Experience building and consuming REST APIs Hands-on experience with Azure services (App Services, Functions, Azure SQL, Service Bus) CI/CD pipeline experience using Azure DevOps Strong knowledge of performance ...

Quality Assurance Automation Engineer

Hiring Organisation
Retelligence
Location
City of London, London, United Kingdom
Behavioral Testing: BDD implementation using SpecFlow or Reqnroll . Modern UI & API: Advanced automation utilizing Playwright and Selenium for both interface and deep-layer REST API validation. Cloud-Native Infra: Working within Azure environments, specifically leveraging AKS (Kubernetes) and Service Bus architectures. CI/CD & AI: Fully integrated pipelines ...

Senior Full Stack Developer

Hiring Organisation
Glite Tech
Location
City of London, London, United Kingdom
KISS principles, decomposition principles, and resolving monolith vs. microservices trade-offs. Experience with SQL and NoSQL databases. 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 ...

Azure AI Engineer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £500 to £550 per day
automated document workflows. Implement RAG (Retrieval-Augmented Generation) architectures using Azure Search or vector databases. Integrate AI capabilities with enterprise systems through REST APIs, Azure Functions, Logic Apps, or Power Platform. Ensure adherence to security, data governance, and compliance standards, including data encryption, responsible AI, and regulated-industry guidelines. Develop ...

Principal Software Engineer - (Frontend & Mobile)

Hiring Organisation
Hargreaves Lansdown
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
module federation, stateless, SPA and others Advanced knowledge of React and React Native Eco system and AWS technology stack. Strong API/integration experience: REST/GraphQL, auth flows, contract design and resilience patterns Well versed in latest CI/CD practises and tools, deployment methodologies and experienced in tools ...

Head of Engineering

Hiring Organisation
Zeus® | AI-Powered Logistics
Location
City of London, London, United Kingdom
/S/4HANA patterns), TMS, WMS, carrier/telematics platforms, customer master systems Own integration architecture across: Inbound/outbound APIs (REST/JSON), event-driven messaging (queues/topics), batch feeds, file-based interfaces (S3-based exchanges), structured email fallbacks Demonstrate practical experience with API management and integration ...