51 to 75 of 191 REST Jobs in London

Junior Software Engineer (Client Facing Analytics)

Hiring Organisation
permutable.ai
Location
London Area, United Kingdom
signals, or quantitative strategies Basic SQL knowledge Exposure to financial or commodities markets Tech & Tools You’ll Work With Python, AWS, CI/CD REST APIs & real-time data pipelines LLM-driven analytics & event-based data Client-facing dashboards & research workflows Why Join Permutable? Learn how AI and quant signals ...

Back End Integration Engineer

Hiring Organisation
Primus Connect
Location
London Area, United Kingdom
security, risk, and compliance expectations Essential experience Strong hands on experience designing and building APIs, services, and system integrations Solid understanding of integration patterns (REST, messaging, event driven, orchestration) Experience with cloud integration services such as Azure API Management, Service Bus, Event Grid, Functions Proficiency in back end development (C# ...

Head of Software Development

Hiring Organisation
Avanti
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£100,000 - £120,000 per annum
enterprise-scale teams Experience working in technical, multidisciplinary environments Clear communicator with strong stakeholder management skills Technology Environment Frontend: React, TypeScript Backend: Node.js, Python, REST and GraphQL APIs Cloud and Infrastructure: AWS, Docker, CI/CD Data and ML: Python-based data and ML tooling Working Pattern Hybrid working model ...

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. ...

Software Engineer AI

Hiring Organisation
E.ON
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
with model APIs (OpenAI, Anthropic, Gemini, or internal endpoints) and managing configurations Experience with production deployment: Git, CI/CD pipelines, Docker, microservices via REST/gRPC Curiosity about end-user problems -you enjoy designing solutions that are intuitive, reliable and impactful Ability to understand business goals and define success ...

Software Engineer AI

Hiring Organisation
E.ON
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
internal endpoints) and managing model configuration. Familiarity with the production deployment lifecycle, including Git, CI/CD pipelines, containerisation (Docker), and consuming microservices via REST/gRPC. A strong passion for understanding end-user problems and designing AI solutions that are intuitive, reliable, and delightful to use. The ability ...

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 ...

Head of Mobile Engineering & Architecture - React & AWS

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £900 per day
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 ...

Senior React Native Engineer - London Hybrid : £100-120k+

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
What You Bring 5+ years’ experience delivering production mobile apps for iOS and Android. Strong expertise with iOS/Android SDKs, remote data handling (REST/JSON) and third-party integrations. Solid understanding of mobile architecture, trends and best practices across the entire development lifecycle. Clear, confident communication skills — written ...

C# Developer - Risk IT

Hiring Organisation
Harvey Nash
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £720 per day
inside iR35* What You'll Be Doing Designing and developing enterprise-grade solutions in an Agile team. Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices . Leading architecture discussions, code reviews, and release management. Collaborating with users and cross-functional teams to define ...

Senior SalesForce Developer - Service Cloud - Experience Cloud - Apex - LWC - SOQL

Hiring Organisation
Nexere Consulting Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 - 90,000 Annual
issues for both projects and BAU. Essential Skills & Experience Extensive hands-on Salesforce development experience in complex environments. Strong skills in Apex, LWC, SOQL, REST/SOAP APIs, and Salesforce configuration. Solid understanding of Service Cloud and Experience Cloud (essential); Marketing Cloud and Sales Cloud (desirable). Experience with ...

Senior Java Developer

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £120,000 per annum
experienced Senior Java Developer, predominantly on version 21 with PostGres Database and Spring Boot, to help develop their rapidly growing application, by building REST APIs, Microservices and evolving their current financial systems. In return, you’ll get a competitive salary of up to £120k, and sign-on stock option ...

Python Developer

Hiring Organisation
Forsyth Barnes
Location
South London, UK
Employment Type
Full-time
development, while collaborating closely with a wider AWS platform team. What you'll be working on Building a FastAPI-based headless service to manage REST APIs for user and group IAM relationships in AWS Designing and delivering a technical audit service for the IAM system Supporting the IAM syncing solution ...

Developer

Hiring Organisation
VIA MATCH LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £45,000 per annum
supportive, collaborative environment. What you’ll be doing Contributing to features and improvements in a JavaScript and Python-based codebase Supporting the development of REST APIs for customer onboarding, transactions, and reporting Helping fix bugs and improve performance in existing services Participating in code reviews and learning the team ...

Senior Scala Developer

Hiring Organisation
SF Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £90,000 per annum
well-established friendly team then please apply now to be considered and for further details. Senior Scala Developer Up to £90,000 Scala, REST Api, NoSQL, TDD/BDD, functional programming, CI/CD, Play, Akka ...

Oracle Developer (local government)

Hiring Organisation
Morson Edge
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£450 - 500 per day
solving, communication, and stakeholder management skills. Desirable: Knowledge of payroll, HR, or finance processes within local government. Exposure to integration tools such as OIC, REST/SOAP APIs, or middleware platforms. InterQuest Group is acting as an employment agency for this vacancy. InterQuest Group is an equal opportunities employer ...

Salesforce Quality Assurance consultant

Hiring Organisation
mthree
Location
London, UK
Employment Type
Full-time
tools (e.g., Selenium, Provar). Experience with Accessibility requirements and testing Experience with Salesforce Lightning Web Components (LWC). Knowledge of Salesforce integrations using REST and SOAP APIs. Experience with tools like Zephyr. Proven experience in test automation Active SC Clearance required please ...

salesforce test analyst

Hiring Organisation
mthree
Location
South London, UK
Employment Type
Full-time
tools (e.g., Selenium, Provar). Experience with Accessibility requirements and testing Experience with Salesforce Lightning Web Components (LWC). Knowledge of Salesforce integrations using REST and SOAP APIs. Experience with tools like Zephyr. Proven experience in test automation. ...

Junior Back-end Engineer

Hiring Organisation
ivee
Location
London Area, United Kingdom
experience (including internships or personal projects) in backend development Proficiency in at least one backend language (Node.js, Python, Go, etc.) Basic understanding of how REST APIs work Familiarity with databases and version control (e.g. Git) Strong problem-solving mindset and attention to detail A willingness to learn fast and take ...

Integration Developer (Banking / Financial Services Industry) - this vacancy is based in Gibraltar

Hiring Organisation
Qudos Recruitment
Location
London Area, United Kingdom
Temenos Integration Frameworks, including: IRIS, TCIB/Infinity APIs, Transact OFS, T24 Web Services, TAFJ/Java services o Message queues (MQ/Kafka), REST/SOAP APIs, file-based integrations. • Build and maintain integrations with: Bloomberg – market data, corporate actions, price feeds, securities reference data. Panovate – debit/credit … Services, Integration Framework, TAFC/TAFJ Java. • Strong understanding of banking domains: Payments (SEPA, SWIFT, FPS), cards, treasury, securities, customer onboarding. • Experience with: REST/SOAP API design & development Message queues (MQ/Kafka/RabbitMQ) ETL/data mapping o Microservices (Java/Spring Boot preferred) • Strong SQL skills ...

Junior Software Engineer

Hiring Organisation
Morson Talent
Location
South London, UK
Employment Type
Full-time
Agile delivery and user story–based development Ability to follow defined development standards and processes Desirable ServiceNow ATF (Automated Test Framework) Experience supporting integrations (REST APIs, data sources) Exposure to regulated or enterprise-scale environments Key Deliverables & Success Measures High-quality ServiceNow code that meets acceptance criteria Unit-tested components ...

Senior Full Stack Engineer (Freelance)

Hiring Organisation
WORTH
Location
London Area, United Kingdom
apply) 5+ years of professional software engineering experience Advanced React + TypeScript , including state-heavy and form-heavy workflows Node.js + TypeScript backend experience (REST APIs) Strong relational data modelling (Postgres or equivalent) Experience shipping production systems end-to-end Comfort working with ambiguity, edge cases, and incomplete data Ability ...

Lead Software Engineer, React Native

Hiring Organisation
Travelex
Location
City of London, London, United Kingdom
shipping complex mobile applications to production Comfortable mentoring peers and supporting technical decision-making. Solid understanding of API integration (GraphQL and/or REST). Strong communication skills — able to work effectively with engineers, product managers, and designers. Experience with native modules and bridging in React Native Familiarity with state ...

Full Stack Java Software Engineer (React.Js)

Hiring Organisation
4Square Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £75,000 per annum
office 1 day per week in London. Required experience Java 18+ experience Spring/Spring Boot PostgreSQL or similar Maven/Gradle REST APIs Microservices React.Js Desirable: Vue.Js experience ...

Software Engineer - Cloud Security

Hiring Organisation
Harvey Nash
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £90,000 per annum
CloudFormation, CDK, Terraform) Building and consuming services using TypeScript/JavaScript with Node.js (exposure to Nest JS and microservices is a plus) Designing secure REST APIs with strong foundations in IAM, networking, and encryption. Working across a modern stack including AWS, CloudFormation, Node.js, Next.js, Auth0, and cloud security tooling. ...