1 to 25 of 178 REST Jobs in London

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 Engineer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
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 ...

Senior Cyber Security Analyst (OWASP / SAST /DAST )

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
€500 - €800 per day
Cloud security tooling Technology Environment Exposure to modern technology environments including: Cloud platforms (AWS, Azure or GCP) Containerised platforms (Docker/Kubernetes) Microservices architectures REST APIs and modern application frameworks Identity and access management solutions Ideal Candidate Background 7-12+ years experience in cyber security Strong focus on application ...

Senior Full-Stack Engineer - React

Hiring Organisation
Robert Walters
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £90,000 per annum
Requirements Strong commercial experience with JavaScript/TypeScript React Mandatory Backend expertise in Node.js or Java (JVM-based frameworks) Proven experience designing and building REST-based microservices architectures Strong understanding of scalability, security and system design in production environments Experience working on mobile-backed systems , ideally with exposure to React ...

Full Stack Software Developer

Hiring Organisation
Genesis Code
Location
City of London, London, United Kingdom
using modern testing frameworks such as Jest, React Testing Library, Cypress, or similar to ensure code quality and reliability. Good understanding of REST APIs, Git, and modern development practices Strong problem-solving skills and attention to detail Ability to work independently and collaboratively in a team environment A degree ...

Artificial Intelligence Specialist

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
/K8s), serverless, CI/CD Solid programming skills (one or more): Python, TypeScript/JavaScript, Java, C# Experience with APIs and integration patterns: REST/gRPC, event-driven systems, queues, workflow engines Security & Governance (Must Have) Understanding of GenAI-specific threats: prompt injection, data leakage, jailbreaks, insecure tool calling ...

Solution Architect

Hiring Organisation
NEEV LIMITED
Location
London, United Kingdom
Employment Type
Contract, Work From Home
effectively across business, product and delivery teams o Experience operating within agile delivery environments Data & Integration Expertise o Strong understanding of integration design patterns (REST APIs, message queues, eventdriven integration, ETL, batch processing). o Experience working with master data domains (Party, Facility, Instrument, Product, Country, Sector, Ratings). Technology ...

Automation Tester-with Python, Pytest, CosmosDB, Azure

Hiring Organisation
Vallum Associates
Location
City of London, London, United Kingdom
knowledge of software testing lifecycle (STLC). Strong analytical and problem-solving skills. Preferred Skills: Experience in Banking or Financial Services domain. Knowledge of REST APIs and tools like Postman. Experience with version control tools (Git). Familiarity with Agile/Scrum methodology Priyanka Sharma Senior Delivery Consultant Office ...

Solidity/Node.JS Developer - Up to £100K

Hiring Organisation
RP Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Experience integrating blockchain with web apps (wallets, APIs, indexing services). Strong understanding of security, scalability, and distributed systems. Technical Competencies TypeScript/JavaScript, REST/GraphQL APIs CI/CD pipelines and DevOps tooling Cloud security, identity, and access management Blockchain tooling (Hardhat, Foundry, Web3.js/Ethers.js or similar ...

SharePoint/Office 365 Developer - 6 Month Contract

Hiring Organisation
RedCat Solutions
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 415 Daily
Skills & Experience Hands-on experience with SharePoint Online , PowerApps, Power Automate, SPFX, or ReactJS. Proficiency in CSS, JavaScript, jQuery, HTML5 . Solid knowledge of REST API and Graph API . Experience with SQL Server (T-SQL) and/or Oracle (PL/SQL) for database querying and analysis. Understanding ...

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 ...

Manager, Software Engineering - RiskOS Analytics

Hiring Organisation
Socure
Location
City of London, London, United Kingdom
Platform teams to define project scope, sequence milestones, and proactively de-risk execution for iterative releases. Own design of APIs and microservices, including REST and event-driven patterns, and enforce best practices for versioning, contracts, and backward compatibility. Advance operational excellence by defining SLOs, improving observability and alerting, hardening ...

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 ...

Senior Manager - Delivery Lead - Tier 1 Global Consultancy

Hiring Organisation
Robert Walters
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £110,000 per annum
Proven ability to break down intricate problems into manageable components while designing scalable solutions that stand up to rigorous demands. Hands-on expertise with REST APIs for seamless integration between systems. Solid background working with relational databases as well as familiarity with NoSQL technologies such as MongoDB. Experience implementing continuous ...

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 ...

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 ...

Software Engineering Manager (UCX) (Mobile)

Hiring Organisation
Hargreaves Lansdown
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
development in React Native is essential , with a strong grasp of front-end design patterns and best practices in mobile SDLC. Proven experience of REST/GraphQL API integration with mobile applications Solid understanding of mobile application fundamentals: iOS/Android app lifecycle, performance constraints and release management Proven hands ...

Quality Assurance Tester

Hiring Organisation
Harrington Starr
Location
City of London, London, United Kingdom
issues end-to-end. Key requirements: Strong manual and/or automated testing of complex web apps Experience testing Java/Spring Boot backends REST API testing (Postman/Swagger etc.) Strong SQL skills React/Next.js frontend testing experience AWS familiarity (EC2, RDS, S3, CloudWatch) Docker/Kubernetes exposure ...

Back End Developer

Hiring Organisation
Albert Bow
Location
City of London, London, United Kingdom
architecture, and help move millions in daily transactions. Requirements: • 5+ years backend engineering experience. • Strong JavaScript/TypeScript/NodeJS expertise. • Experience with microservices, REST APIs, and event-driven systems. • Solid knowledge of PostgreSQL, Redis, Docker, Kubernetes, and AWS. • Strong focus on security, scalability, and reliability. Nice to Have: • FinTech ...

Full Stack Engineer

Hiring Organisation
Qurated
Location
City of London, London, United Kingdom
reporting initiatives Participate in agile ceremonies, discovery work, prototyping, testing, and deployments Ideal Candidate Strong experience with C#, .NET Core, Angular Solid understanding of REST APIs , microservices, and secure coding practices Experience with cloud platforms (AWS preferred) , CI/CD pipelines, Docker/Kubernetes Background in financial services or regulatory ...