1 to 25 of 90 RESTful Jobs in London

Mandatory hands-on experience with React js , Redux (or similar state management libraries). Solid understanding of HTML5, CSS3, JavaScript (ES6+) . Experience with RESTful API design and integration. Familiarity with databases such as MySQL, PostgreSQL, or MongoDB. Experience with version control systems like Git. Strong understanding of object-oriented ...

Business Analysts, and Transformation Leads to deliver next-generation payments solutions. Key responsibilities Application Development & Integration Design and develop Java-based backend services and RESTful APIs for payment processing, reconciliation, and message translation. Implement ISO 20022 (MX) to MT message transformation logic and related schema validation using XML/JSON ...

Design, and QA to deliver high-value solutions Design and optimise CI/CD pipelines to enable efficient, reliable software delivery Build and maintain RESTful APIs and distributed systems with a focus on scalability and performance Own complex technical challenges, from design through to production support and optimisation Promote ...

enhance backend services using frameworks including .NET, Flask, and Django Develop user friendly front end interfaces with React, Angular or similar Create and maintain RESTful API’s, microservices, and integrations with third party systems Troubleshoot and debug issues across the stack Participate in code reviews Requirements: Experience working ...

enhance backend services using frameworks including .NET, Flask, and Django Develop user friendly front end interfaces with React, Angular or similar Create and maintain RESTful API’s, microservices, and integrations with third party systems Troubleshoot and debug issues across the stack Participate in code reviews Requirements: Experience working ...

development, APIs, and modern software engineering practices. Key Responsibilities Develop, test, and maintain applications using .NET/.NET Core/ASP.NET Design and implement RESTful APIs and microservices Write clean, scalable, and efficient code Collaborate with front-end developers, QA, and product teams Troubleshoot, debug, and upgrade existing systems Participate ...

blockers and solve systemic issues. Requirements Proven senior-level Java experience (Java 11+), including modern language features and best practices. Strong Spring Boot expertise (RESTful APIs, security, configuration, testing). Essential: scale up banking or financial services background within a regulated environment. Cloud-native experience (e.g., AWS/Azure/ ...

scalability, and maintainability Candidate requirements - 8+ years' experience in digital development, with a strong portfolio in bespoke eCommerce and enterprise web applications Experienced in RESTful APIs, with knowledge of SOAP, XML, and XPath Expertise in C#, ASP.NET MVC 5, SQL Server, and Entity Framework; experience with HTML5, CSS3, JavaScript ...

innovative solutions. Key Skills & Experience: Proven senior-level Java experience (Java 11+) including modern language features and best practices Strong expertise in Spring Boot (RESTful APIs, security, configuration, testing) Banking or financial services background within a regulated environment Cloud-native experience (AWS/Azure/GCP) Containerisation (Docker) and orchestration ...

engineering experience Strong proficiency in Python (3.10+) with deep understanding of async programming Experience with Poetry or similar Python dependency management tools Experience building RESTful APIs and micro-services Solid understanding of database design and optimisation (both SQL and NoSQL) Experience with graph databases (Neo4j preferred) or willingness to learn ...

systems and services, particularly in areas such as trading platforms, investment management, and risk analytics. Experience in building microservices architectures and working with APIs (RESTful, gRPC, etc.) to integrate various systems. Strong knowledge of containerization (Docker) and continuous integration/deployment (CI/CD) practices. Experience with database systems (relational ...

Entity Framework * HTML5, CSS3, JavaScript, jQuery, and React experience. * Strong knowledge of Object-Oriented Programming, SOLID principles, and common design patterns. * Experience working with RESTful API design and integration; SOAP WebServices and XML/XPath * Skilled in using IoC containers (Autofac, Ninject) and unit testing frameworks * Experienced with CI/ ...

such as Nest.js, Express.js, or FastAPI . Database Mastery – Strong SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) expertise. API Development & Security – Experience in building RESTful & GraphQL APIs , JWT authentication, OAuth, and cryptographic security. Scalability & Optimization Skills – Ability to optimize database queries, caching strategies, and event-driven architectures (Kafka, RabbitMQ) . ...

hybrid working. Initially 6-9 months About the role: Experience with C#/.NET Additional languages highly desirable ie Java, Python React/TypeScript RESTful API design Apache Kafka PostgreSQL Git/GitHub workflows Experience with Kubernetes deployments; able to build CI/CD pipelines About you (ideally ...

/NoSQL databases. Proven experience working in fast-paced environments, ideally within trading, financial services, or high-frequency environments. Proficiency in developing RESTful APIs, microservices, and working with cloud-based architectures (AWS, GCP, or similar). Expertise in testing frameworks, CI/CD, and containerization technologies such as Docker ...

APIs. Develop and maintain SharePoint Online intranet structures including architecture, navigation, branding, and content design. Integrate SharePoint with internal systems and thirdparty platforms using RESTful APIs and Microsoft Graph. SharePoint Administration & Operations Administer both SharePoint SE (onprem) and SharePoint Online environments. Manage updates, cumulative patches and platform maintenance. Monitor performance ...

Develop and maintain SharePoint Online intranet structures including architecture, navigation, branding, and content design. Integrate SharePoint with internal systems and third-party platforms using RESTful APIs and Microsoft Graph. SharePoint Administration & Operations Administer both SharePoint SE (on-prem) and SharePoint Online environments. Manage updates, cumulative patches and platform maintenance. Monitor ...

hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput backend systems using Core Java and SpringBoot. Build and maintain RESTful APIs and microservices that power secure payment workflows. Work with XML-based messaging standards and protocols commonly used in financial transactions. Deploy, monitor, and scale applications ...

improve efficiency and maintainability. Ensure high automation coverage across UI, API, and integration layers. API and Integration Testing Develop and maintain automated tests for RESTful APIs, GraphQL services, and distributed microservices. Validate service contracts, data integrity, and system interactions across complex integrations. Utilize tools such as Postman, SuperTest, or Playwright ...

development. Understanding of ITIL principles (incident, change, problem). Exposure to DevOps, CI/CD, or structured testing and release methodologies. Knowledge of APIs, RESTful services, and authentication methods. ...

across Java, microservices, performance engineering, and distributed systems. Backend Engineering Build and optimize backend services using Java (Java 17+), Spring Boot/Micronaut Design RESTful APIs, asynchronous messaging systems, and microservices. Own performance, reliability, monitoring, and observability for critical services. Ensure high engineering standards: code quality, design reviews, testing ...

month contract Responsibilities Build and maintain .NET services powering a global payments platform Contribute to event-driven microservices running in Azure Develop and maintain RESTful APIs used by internal systems and external partners Collaborate with senior engineers on system design and implementation Write clean, maintainable, and well-tested code Participate ...

HTML5 , CSS3 , and modern JavaScript (ES6+). Proven experience with state‐management libraries (e.g., Redux, Zustand). Solid experience integrating front‐end apps with RESTful APIs, (GraphQL is a bonus). Experience with testing frameworks (e.g., Jest , React Testing Library ). Comfortable with CI/CD pipelines, version control ...

SharePoint Framework (SPFx) development. - Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices. - Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph. - Solid experience with C# and .NET Framework for backend and integration development. - Hands-on experience administering SharePoint on-prem environments, including patching ...

moving datasets Strong understanding of distributed systems and event-driven architectures Experience with messaging technologies such as Kafka, Solace or RabbitMQ Solid experience building RESTful and event-driven APIs Strong knowledge of SQL and relational database design Experience deploying applications using containerisation and orchestration (e.g. Kubernetes) Track record of driving ...