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

Software Engineer

Hiring Organisation
Opus Enterprise Ltd T/A Real Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
solid understanding of the software development lifecycle (SDLC). Technical experience with OOAD, SOA, Java, J2EE, Spring, React.js, Node JS, Hibernate, SOAP/REST web services, Spring security, SpringBoot, and AMQP/RabbitMQ. Experience with application servers (Jboss/WebSphere). Experience in writing SQL query reports and data correction ...

Senior Fullstack Developer - C#/.Net, Angular, Azure

Hiring Organisation
JLA Resourcing Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£75,000
Azure Building and consuming RESTful APIs using OpenAPI 3, OAuth, and modern integration standards Working with WCF services and integrating external web services (SOAP, REST, JSON, XML) Developing rich user interfaces using Angular or similar Javascript Frameworks The Person We're looking for a technically strong Senior Fullstack Developer with ...

.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
JNC Recruitment Limited
Location
City of London, London, United Kingdom
Angular development and principles (TypeScript, HTML, CSS/SCSS) Strong SQL Server (T-SQL) Experience of building and consuming web services and APIs (SOAP, REST using XML, JSON ) In line with the Conduct Regulations 2003, when advertising permanent vacancies JNC Recruitment are acting as an Employment Agency, and when advertising ...

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 ...

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 ...

Software Engineer (Backend, AI Systems)

Hiring Organisation
Locai Labs
Location
City of London, London, United Kingdom
experience, ideally working on backend systems, APIs, or AI-related products Proficiency in Python and JavaScript/TypeScript (Node.js) Strong understanding of backend architectures, REST/GraphQL APIs, and data modelling Experience with containerisation (Docker) and cloud platforms ( GCP , AWS , or similar) Familiarity with LLM or AI APIs Exposure ...

Lead Developer - C#/Angular - Commodities

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: C#, .NET 8+, Angular 16+, Typescript, SQL Server, REST APIs Experience with NHibernate/Entity Framework, Git, Jira, Confluence Ability to navigate complex multi‐system environments Strong communication and problem‐solving skills Background ...

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 ...

Automation Assurance Specialist

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
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 ...

SC Cleared QA SDET

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £540/day Inside IR35
passion for quality. Preferred Qualifications Salesforce certifications (e.g., Salesforce Administrator, Platform App Builder) are a plus. Experience with API testing tools (Postman, REST Assured) is desirable. Understanding of enterprise-level integration testing. Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited ...

ServiceNow Development Manager

Hiring Organisation
Veolia
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£83500/annum Car, Pension, Bonus, Medical
certifications 3+ years people management experience in technical environments Expert knowledge of ServiceNow modules (ITSM, ITOM, HRSD, CSM) Strong experience with JavaScript, REST/SOAP APIs, and system integrations Proven track record of delivering complex ServiceNow implementations Excellent communication and stakeholder management skills Experience with SAFe/Agile/Scrum ...

Software Engineer, Frontend

Hiring Organisation
Travelex
Location
City of London, London, United Kingdom
Demonstrated fluency with TypeScript, React and frameworks such as NextJS Familiarity with state management libraries (Zustand, Redux, MobX etc.) Experience working with GraphQL/REST APIs Knowledge of the web platform, including HTML, CSS and Browser APIs Experience with the testing pyramid and tools such as Vitest, Jest, Playwright Understanding ...

Web Developer

Hiring Organisation
Reed
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £50,000 per annum, Inc benefits
JSON. Experience with UI binding frameworks such as Vue.js, AngularJS, React, or Knockout is beneficial. Strong understanding of the MVC pattern, REST APIs, and asp.net controllers. Knowledge of security practices, particularly those identified in OWASP, to mitigate security vulnerabilities. Experience in debugging, profiling, and deploying web applications. Strong interpersonal skills ...

Full-Stack Software Developer

Hiring Organisation
Greenpixie
Location
City Of Westminster, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
rough designs using UI frameworks such as shadcn and Tailwind UI. Experience building web applications with React and NextJS. Strong understanding of APIs (REST, GraphQL) and how to build and consume them, using Python in FastAPI, Flask or similar framework Experience using Claude Code and/or Cursor to build ...

ACBS Developer

Hiring Organisation
83zero Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day
Oracle, or DB2 databases Knowledge of ACBS APIs, batch jobs, and reporting tools Experience with Unix/Linux environments Familiarity with integration technologies (REST, SOAP, MQ) Version control tools (Git, Bitbucket ...

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 ...

Application Security Engineer

Hiring Organisation
Atrium Global
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £650 per day
strengths and weaknesses of each At least one programming language (e.g. Java, Go) At least one major cloud provider (e.g. AWS, GCP, Azure) REST API design HTTP Authentication Linux at the terminal, including scripting and automation (e.g. shell, Python) Some other highly valued skills may include: Experience with CI/ ...

Site Reliability Engineer

Hiring Organisation
Global Fintech
Location
City of London, London, United Kingdom
implementing monitoring and alerting tools (DataDog, Grafana). Solid experience with AWS Cloud Infrastructure and related operational processes. Deep understanding of and experience troubleshooting REST APIs and WebSockets. Exposure to crypto, blockchain (DLT), trading, and risk management systems is highly beneficial. Familiarity with financial services infrastructure standards and processes (e.g. ...

SAP BTP Lead

Hiring Organisation
DXC
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
side-by-side extensions using CAP/RAP and low-code tools. Own integration and API strategies leveraging BTP Integration Suite (APIs, OData, REST/SOAP, event-driven patterns). Provide technical leadership, mentoring developers and ensuring adherence to coding standards and best practices. Manage BTP governance including subaccount design ...

Senior Mobile Engineer

Hiring Organisation
AdvisoryAI
Location
City of London, London, United Kingdom
Target : Swift (iOS), Kotlin (Android), native UI frameworks (SwiftUI, Jetpack Compose) Architecture : MVVM/MVI, Clean Architecture, Reactive patterns (Combine, Coroutines/Flow) Networking : REST APIs, WebSocket for real-time features, GraphQL consideration Local Storage : Core Data/SQLite, Room Database, secure keychain/keystore AI Integration : Real-time transcription ...

Head of Mobile Engineering & Architecture - React & AWS

Hiring Organisation
Sanderson Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £900 per day + Outside IR35
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 ...

Azure AI Architect

Hiring Organisation
Infoplus Technologies UK Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
controls) and completing architecture risk assessments. Proficiency in Python and/or C# for service integration, evaluation tooling, and adapters; solid understanding of REST APIs, JSON, and async patterns. Mode of working: Hybrid(3 days) Work locations: London, Tunbridge wells, Ipswich, Bolton ...

Scala Developer (Remote)

Hiring Organisation
Stealth iT Consulting
Location
City of London, London, United Kingdom
HTTP filters. Solid understanding of functional programming concepts and idiomatic Scala (e.g., immutability, monads, cats/Scalaz familiarity advantageous). Experience designing and consuming REST APIs, JSON validation/serialization (Play JSON, Circe). Experience with relational databases (PostgreSQL) and/or NoSQL (MongoDB), including schema design and query optimisation. ...