226 to 250 of 275 REST Jobs in London

Principal Data Engineer – Crypto Market Data Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Principal Backend Engineer on the CoinDesk Data Engineering team in the UK. You’ll shape the technical direction for high‐throughput services, spanning REST and streaming, and own core infrastructure in a 24/7 financial environment. You’ll mentor senior engineers, drive architectural decisions, and advance observability, tooling ...

Field AI Engineer: Production-Ready Multimodal Systems

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
architect, build, and deploy intelligent agent solutions that solve real business problems. You will collaborate with customers, design end-to-end pipelines, integrate with REST/GraphQL, and help shape AI strategy from concept to production. #J-18808-Ljbffr ...

Product Manager

Hiring Organisation
ManpowerGroup
Location
London Area, United Kingdom
efficiency, and modernised architecture aligned to the North Star vision. The Channel Product Domain currently consists of two closely aligned capability areas: • Product APIs (REST, Sub-graphs, legacy assembly apis) • PIM (Product Information Management) As the PIM platform is undergoing a significant modernisation programme requiring dedicated strategic focus, additional product ...

Senior Solutions Engineer - Healthtech

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
5+ years of experience in Sales Engineering or Solutions Architecture, preferably in SaaS, healthcare, or enterprise software. Strong working knowledge of integration protocols (REST APIs, SAML/OIDC, SCIM), enterprise architecture, and security standards. Experience supporting sales cycles with large healthcare providers, health systems, or EMR vendors is highly valued ...

Dynamics 365 Solution Architect & Developer

Hiring Organisation
Matchtech
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£60 - £86/hour
platforms. Work closely with business stakeholders to define requirements and solution roadmaps. Lead integration design using Azure Functions, Logic Apps, Service Bus, and REST APIs. Establish development standards, governance, and best practices. Support application lifecycle management, deployment approaches, and release governance. Provide technical leadership to developers, analysts, and project stakeholders. … Power Apps (Model-Driven Apps) Power Automate Customer Insights Sales Accelerator Strong hands-on development capability including: C# .NET JavaScript Plugins Custom Workflow Activities REST APIs Experience designing enterprise integrations using: Azure Functions Logic Apps Service Bus Azure Data Factory Azure Key Vault Strong stakeholder management and communication skills. Experience ...

Senior Backend Engineer | London, UK | JPMC

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
United Kingdom and 1 more Job Description Key Responsibilities Design, develop, and maintain scalable backend services, REST APIs, and microservices supporting the Personal Loans platform. Build and enhance event-driven, distributed application components, including Kafka-based integrations where applicable. Collaborate with product, architecture, engineering, QA, and delivery teams to clarify … continuous improvement initiatives. Required Skills & Experience Strong hands-on experience in Java development, Spring Boot, and microservices architecture. Experience designing, developing, testing, and supporting REST APIs for enterprise-scale platforms. Hands-on experience with AWS cloud services and cloud-native backend development. Experience building event-driven systems and distributed applications ...

ERP Integration Architect - Contract - Remote

Hiring Organisation
IO Associates
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
high-performance integration solutions while supporting mission-critical customer environments. Key Responsibilities Design, develop, and maintain API integrations between ServiceNow and enterprise applications using REST, SOAP, XML, and JSON. Develop custom integration solutions for applications and platforms not natively supported by ServiceNow. Troubleshoot compatibility issues across Legacy applications running … system issues. Experience supporting ERP systems and enterprise applications. Strong understanding of software engineering principles and enterprise integration patterns. Essential Technical Skills ServiceNow Integration REST, SOAP, XML and JSON .NET C++ Python Windows and Linux Microsoft Azure CI/CD and DevOps Enterprise API Development ERP Systems and Enterprise Application ...

Forward Deployed AI Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
agent orchestration, automation triggers, prompt integration, exception handling and reusable delivery patterns. API integration and service connectivity: Connect AI workflows to enterprise systems through REST APIs, event streams and Microsoft Fabric data pipelines, ensuring secure and reliable data flows across platforms such as SAP, Salesforce and Convatec’s data lake. … ownership, model versioning, automated testing and live system monitoring - not as adjacent knowledge but as daily practice. Strong proficiency in Python and SQL; solid REST and event-driven API integration experience including enterprise systems such as SAP (via SAP Joule) or Salesforce. Hands-on experience with Azure AI Foundry, Microsoft ...

Senior Backend Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
data services, and platform integrations. Define patterns for microservices, domain boundaries, caching, queuing, resiliency, and error handling. Build robust service‐to‐service communication mechanisms (REST, gRPC, event‐driven patterns). Implement secure authentication, authorization, rate limiting, and multi‐tenant access controls. Hands‐On Backend Development Write high‐quality, maintainable, production … impairments or a medical condition) that may affect your assessment, please inform your Talent Acquisition Partner. We will discuss possible adjustments to ensure fairness. Rest assured, disclosing this information will not impact your treatment in our process. #J-18808-Ljbffr ...

Principal Product Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
/or Android, with strong fluency in Swift and/or Kotlin and the surrounding ecosystem - offline sync, push, auth, persistence, networking, REST/GraphQL) - and credible breadth beyond it Demonstrated breadth: you've worked seriously in at least one of {web frontend, backend services, data/infra, platform tooling ...

Junior Data Engineer

Hiring Organisation
TechNET IT Recruitment Ltd
Location
London Area, United Kingdom
monitoring to ensure data assets are accurate, reliable and fit for use. You will also help integrate data from internal and external systems via REST APIs , working with JSON payloads, authentication, pagination and basic error handling. Essential Skills Strong SQL fundamentals, including joins, aggregations and subqueries Understanding of ETL/… Exposure to Apache Kafka or similar streaming platforms Basic knowledge of AWS services, particularly managed databases Awareness of Docker and Kubernetes concepts Understanding of REST APIs, HTTP methods and JSON payloads Ability to consume data from APIs as part of a data pipeline Good problem-solving skills and ability ...

IAM Security Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
solutions using CI/CD pipelines with automated testing and validation. Develop secure cloud-native IAM solutions across AWS and GCP. Develop and secure REST and SOAP APIs. Contribute to DevOps and Agile delivery practices. Requirements Minimum 6 years of IT experience, including at least 4 years within Cyber Security … Python coding experience (Java or Go also considered). Experience with automated testing frameworks such as PyTest, Behave or JUnit. Experience developing secure REST and SOAP web services. Associate or Professional AWS or GCP Cloud Certification (mandatory). Associate or Professional Cyber Security Certification (mandatory). Excellent communication and stakeholder ...

Oracle Technical Developer – DV cleared

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Build custom connectors, adapters, and integration flows to connect Oracle Fusion ERP, HCM, and SCM with third-party and legacy systems. Write and maintain REST/SOAP web services, handling authentication, error handling, and payload transformations (XSLT, JSON/XML mapping). Develop data conversion and migration components using FBDI … building integrations using Oracle Integration Cloud (OIC). Working technical knowledge of Oracle Fusion ERP, HCM, or SCM data structures and APIs. Proficiency with REST/SOAP web services, JSON, XML, and XSLT transformations. Experience with FBDI, HDL, and BI Publisher (BIP) for data loads and reporting integrations. Understanding ...

Senior QA Automation Engineer

Hiring Organisation
Noir
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £65,000 per annum
stack: C#, .NET Core, .NET 8/9/10, AI-Assisted Testing, Test Automation, Reqnroll, SpecFlow, NUnit, Azure DevOps, SQL Server, ASP.NET Core, REST APIs, CI/CD, BDD, Automation Frameworks, Investment Management, Wealth Management) Our client is a market-leading FinTech organisation developing an award-winning front … evaluate emerging AI technologies, prototype innovative automation approaches and champion an automation-first culture that supports faster, higher-quality software delivery. Experience with BDD, REST APIs, distributed systems and shift-left testing will be highly beneficial. Successful Senior QA Automation Engineer candidates will have proven experience building enterprise-scale automation ...

Lead Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
develop, test, and deploy Appian applications, including process models, records, interfaces, reports, business rules, and integrations. Develop and support integrations with enterprise systems using REST/SOAP APIs and modern authentication mechanisms. Collaborate with business stakeholders, product owners, architects, and development teams to deliver innovative business solutions. Drive application quality … development experience delivering enterprise applications. Strong expertise in Appian Process Models, SAIL, Records/Data Fabric, Security, Reports, Rules, and Integrations. Experience with REST APIs, SQL, relational databases, and Agile development methodologies. Strong analytical, problem‐solving, and communication skills. Appian Certified Senior Developer (or higher) preferred. Experience building workflow, case ...

AI Native Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
/MSI status, and ctDNA results seamlessly map to the exact same case record as the histology diagnosis. Interoperable Interface Engineering: Implement robust REST APIs, HL7 v2, or HL7 FHIR interfaces to feed structured pipelines directly into downstream matching layers or ecosystems like Proscia Concentriq and Aperture. Future Ecosystem APIs … mastery of Python and SQL, capable of debugging asynchronous, multi-step pipelines independently. Regulated API Design: Deep familiarity with constructing and consuming production-grade REST APIs within highly regulated or clinical environments. Cloud & Containerization: Practical deployment experience across cloud infrastructure providers (AWS, Azure, or GCP) utilizing Docker containerization. Data Standards ...

Dynamics 365 Developer - London (Remote) - c£70K

Hiring Organisation
Nigel Frank International
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 per annum
forms, views and business processes to meet evolving business requirements Build integrations between Dynamics 365 and third-party applications using Azure services, APIs and REST/SOAP web services Support the full software development lifecycle, including solution design, development, testing, code reviews and deployments Skills & Experience Proven experience developing solutions … TypeScript, Power Apps, Power Automate and Dynamics 365 plugin development Experience working with Dataverse, SQL Server and relational database design Knowledge of Azure services, REST/SOAP APIs and enterprise system integrations Strong understanding of secure coding practices, solution architecture and performance optimisation Excellent analytical, debugging and problem-solving skills ...

Automation Test Engineer - up to £70,000 + Bonus + Benefits

Hiring Organisation
Involved Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £70,000 per annum
scale. Responsibilities for the Automation Test Engineer: Design, develop and maintain scalable UI and API automation frameworks Build automated test suites using Java, Selenium, REST Assured and Cucumber BDD Develop and execute functional, regression, integration and end to end automated tests Perform UI automation using Selenium WebDriver and Playwright Carry … testing using REST Assured, Postman and Swagger Conduct accessibility testing to ensure compliance with WCAG standards Support CI/CD pipelines and continuous testing throughout the development lifecycle Work closely with developers, DevOps engineers, Business Analysts and Product Owners Contribute to performance and load testing using K6 Support testing across ...

Integration Architect

Hiring Organisation
Third Nexus Group Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£85000 - £120000/annum
aligned with enterprise standards Lead end-to-end integration delivery across multiple systems and teams Design event-driven, API-first, cloud-native solutions (NATS, REST, async messaging) Create architecture artefacts (blueprints, APIs, ADRs) Act as integration authority across platforms and stakeholders Mentor teams on integration patterns, API governance, and best … tools to improve development efficiency Tech Stack Integration: Event-driven architecture, NATS (or Kafka/Pulsar), messaging patterns Backend: Java, Spring Boot, microservices, REST/gRPC Cloud: AWS (EKS/ECS, SQS/SNS, API Gateway, Terraform) API: OpenAPI/AsyncAPI, versioning, governance Frontend: React/TypeScript (working knowledge) Domain ...

ServiceNow Technical Architect- Outside IR35

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
leading practices, coding standards, design patterns, security standards, data governance, and configuration over customization.* Manage or oversee integrations between ServiceNow and other systems (via REST, SOAP, IntegrationHub, MID Servers, etc.), ensuring reliability, security, latency, error handling, monitoring.* Establish/enforce architecture governance: review designs from development teams/partners, perform … seniority.* Deep experience across **multiple ServiceNow modules/workflows (for example, ITSM, ITOM, Discovery, ITAM, CSM, HRSD, SecOps, GRC, etc.).*** Strong integration experience: REST/SOAP APIs, IntegrationHub, MID Server, custom integrations.* Understanding of **data modeling, CMDB, metadata, core data, data governance, security.**### Preferred Skills:* Experience in defining ...

Integration Architect, Banking, Hybrid

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550 per day + Hybrid
architecture aligned to enterprise standards Define and implement integration patterns across distributed teams Design and deliver event-driven, API-first, and messaging solutions (NATS, REST) Lead end-to-end integration delivery, including hands-on development where required Produce key architecture artefacts such as blueprints, contracts, and ADRs Engage with stakeholders … team integration initiatives Key Skills & Experience: Strong experience with event-driven architecture and messaging systems (NATS, pub/sub) Expertise in API-first design (REST, gRPC) and microservices architecture Hands-on experience with Java/Spring Boot Proven delivery of cloud-native solutions on AWS (ECS/EKS, SQS/ ...

Senior Java Developer

Hiring Organisation
Pontoon
Location
Bromley, London, United Kingdom
Employment Type
Contract
development experience. Multithreading. SQL & PL/SQL. Excellent communication skills. Core Java, J2EE, Multithreading, Collections, OOP, Data Structures Strong skills in Spring, Spring Boot, REST APIs, Hibernate Experience with Oracle Database. Front-end experience with AngularJS/Angular Working knowledge of Git, JIRA, Artifactory, Ansible Experience building and consuming … Previous experience working in Agile/Scrum teams Key Responsibilities Develop and enhance enterprise Java applications. Build scalable backend services using Spring Boot and REST APIs. Work on a large-scale migration to new source systems. Support client-facing reporting platforms. Provide technical guidance and mentor junior developers. Collaborate with ...

AI Deployment Engineer

Hiring Organisation
Emponics
Location
City of London, London, United Kingdom
Employment Type
Permanent
storage supporting current and future AI deployments Troubleshoot integration failures, data inconsistencies, and production issues Key Skills Python & SQL (production-grade pipeline development) REST APIs, webhooks, OAuth, event-driven architecture Orchestration tools: Airflow, Prefect, or Dagster Cloud platforms: AWS, GCP, or Azure Docker & Kubernetes Microsoft 365 & Microsoft Copilot Desirable Skills … data pipelines, and production infrastructure. Strong Python and SQL skills; experienced building robust, production-grade data pipelines from scratch. Deep familiarity with integration patterns: REST APIs, webhooks, OAuth, and event-driven architectures. Experience with orchestration tools (Airflow, Prefect, or Dagster) and transformation frameworks (dbt or similar). Comfortable across cloud ...

Full Stack Engineer

Hiring Organisation
Aspect
Location
City of London, London, United Kingdom
front-end interface through to the APIs, data models, and services that support them. Design and build backend services in Node.js, along with the REST and GraphQL APIs that connect our products. Model and work with relational data in PostgreSQL, keeping schemas clean and queries efficient. Collaborate with Product … with React and TypeScript. Solid full stack ability, comfortable owning both the front end and the services behind it. Experience with Node.js and building REST or GraphQL APIs. Good working knowledge of relational databases, ideally PostgreSQL. A strong eye for design detail, usability, and accessibility. Experience with cloud platforms such ...

C# .Net Developer

Hiring Organisation
Pontoon
Location
Bromley, Kent, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £750 per day
experience with: C# development .NET 6.0/.NET 8.0 .NET Core .NET Framework 4.7+ Web & API Development Experience designing and developing Web Services, including: REST APIs SOAP Services Strong understanding of API design principles and documentation standards. ASP.NET MVC 5 ASP.NET Web API 2 Front-End Development Angular (v2+) JavaScript … generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention. ...