51 to 75 of 269 API Development Jobs in the UK

large-scale data and asset modelling using Python, with particular expertise in Pydantic-based data modelling, schema definition and validation. Experience with AI-assisted development and agent orchestration tools is highly desirable, particularly where these technologies are used to accelerate high-quality software delivery. In this role, you will … models. Develop high-quality Python solutions for data modelling and governance use cases, using Pydantic for schema definition, validation, serialization, configuration-driven models and API-ready data structures. Build reusable Python libraries, modelling components and automation patterns supporting data ingestion, governance workflows, data quality, lineage, integrations and reporting ...

production-grade software. This role is ideal for someone who enjoys working at pace in secure, technically challenging environments, with opportunities to contribute across API development, cloud-native services and data integration. Typical responsibilities include: Developing software services using languages such as Java, JavaScript, TypeScript, Python or C++ … platforms, data services and streaming technologies Implement monitoring, logging and observability to support live service operation Support secure deployment and operation of applications across development, test and production environments Skills Required Experience working within the UK Security & Intelligence, defence or other secure government environments Strong knowledge of modern software ...

Toshiba Europe Limited has pioneered the development of quantum communication systems and networks over the past decade, setting new standards for cryptography and data security. We are currently seeking a Software Engineer (or Senior Software Engineer, depending on experience) to join the growing team developing our products within Toshiba … dynamic organisation, working within a diverse team of engineers, with the ability to make a significant impact and playing a major role in the development of next-generation secure communication and networking products. Responsibilities Architect, build and maintain command and control software to orchestrate hardware and implement quantum communication ...

Tech: ASP.NET MVC 5, Restful API, Angular, SQL, Azure Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known fintech50 business, 40 man flat Dev Team Pay: 120k, Bonus- 750 training budget, Pension, Life/Health, Some Flex Working Technical Architect FintechQuant is urgently looking … hands on Technical Architect to join our high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is well known in the WRAP and SIPP market as a full service provider.The environment is that of Facebook or Google, relaxed ...

Description Sage Embedded Services is a modular, API-first solution that enables software platforms, banks, and fintechs to integrate Sages accounting and compliance capabilities directly into their own products. This projectExternal Partner Integrationsfocuses on embedding Sages core offerings into third-party platforms, ensuring seamless interoperability and data flow. This … Strengthen Brand Loyalty: Becoming a core component of partner platforms increases customer stickiness and long-term engagement with Sage services. Key Skills detailed below. API Development. Understanding and Development of Microservices. Designing Config templates for API's. Understanding of YAML templated and YAML code ...

Description Sage Embedded Services is a modular, API-first solution that enables software platforms, banks, and fintechs to integrate Sages accounting and compliance capabilities directly into their own products. This projectExternal Partner Integrationsfocuses on embedding Sages core offerings into third-party platforms, ensuring seamless interoperability and data flow. This … Strengthen Brand Loyalty: Becoming a core component of partner platforms increases customer stickiness and long-term engagement with Sage services. Key Skills detailed below. API Development. Understanding and Development of Microservices. Designing Config templates for API's. Understanding of YAML templated and YAML code ...

Description Sage Embedded Services is a modular, API-first solution that enables software platforms, banks, and fintechs to integrate Sage's accounting and compliance capabilities directly into their own products. This project-External Partner Integrations-focuses on embedding Sage's core offerings into third-party platforms, ensuring seamless interoperability … Strengthen Brand Loyalty: Becoming a core component of partner platforms increases customer stickiness and long-term engagement with Sage services. Key Skills detailed below. API Development. Understanding and Development of Microservices. Designing Config templates for API's. Understanding of YAML templated and YAML code ...

will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment. The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes … handling, and backpressure management. Experience designing and developing cloud-native applications with a microservices architecture running on Docker/OpenShift/Kubernetes. Strong application development skills in Java, SQL (SQL Server, Oracle, etc.) and messaging platforms such as Kafka and MQ. Experience with the Spring framework and Spring Boot ...

Liverpool | Hybrid Working | Competitive Salary We're looking for an experienced Lead Solutions Architect & Development Lead to join our senior IT team, reporting directly to the IT Director. This is a hands-on technical leadership role where you'll shape the firm's technology strategy while remaining actively involved … software development, architecture, database management and team leadership. You'll play a key role in designing scalable enterprise solutions for a 1,000-user organisation and work closely with senior stakeholders to deliver technology that drives the business forward. Key Responsibilities Lead the design of enterprise-wide software architecture ...

Agile ceremonies, including sprint planning, backlog refinement, stand-ups, and retrospectives. Produce and maintain technical documentation within Confluence. Contribute to continuous improvement initiatives across development processes, tooling, and code quality. Essential Skills & Experience Technical Skills 8+ years of Java development experience. Strong experience with Java 17+. Spring Boot. … Spring Data JPA/Hibernate. Microservices architecture. REST API development and integration. PostgreSQL or similar relational database technologies. Docker containerisation. AWS cloud platforms and services. Jenkins CI/CD pipelines. Maven. JUnit and automated testing frameworks. Git source control. Agile development methodologies (Scrum/Kanban). Jira ...

work at home 100% of the time. Mandatory Skills 5 years of Full Stack Engineering experience 5 years of React or React Native development 5 years of Java development experience Spring Boot framework expertise RESTful API design development and integration Microservices architecture and implementation … database technologies Test Driven Development TDD and Behaviour Driven Development BDD Unit integration and end-to-end testing practices GitLab and CICD pipeline implementation Open API Specification OAS YAML Cloud engineering experience AWS preferred Secure coding and application security best practices DevOps and Continuous Delivery methodologies Strong ...

high profile client.My client is a growing global Fintech business and market leaders in the invoice finance space. They are currently expanding their development team with an additional 3 developers in the City of London.The ASP.NET MVC Development role is expansionary due to a brand new international platform … being created. The ASP.NET MVC Developer will be involved in greenfield platform development for a global high demand high transaction payments gateway. The frontend development of their web platform in HTML5, Javascript, angular.js and CSS3 and the backend in ASP.NET MVC and noSQL (which will be gained ...

high profile client.My client is a growing global Fintech business and market leaders in the invoice finance space. They are currently expanding their development team with an additional 3 developers in the City of London. The ASP.NET MVC Development role is expansionary due to a brand new international … platform being created. The ASP.NET MVC Developer will be involved in greenfield platform development for a global high demand high transaction payments gateway. The frontend development of their web platform in HTML5, Javascript, angular.js and CSS3 and the backend in ASP.NET MVC and noSQL (which will be gained ...

high profile client.My client is a growing global Fintech business and market leaders in the invoice finance space. They are currently expanding their development team with an additional 3 developers in the City of London. The ASP.NET MVC Development role is expansionary due to a brand new international … platform being created. The ASP.NET MVC Developer will be involved in greenfield platform development for a global high demand high transaction payments gateway. The frontend development of their web platform in HTML5, Javascript, angular.js and CSS3 and the backend in ASP.NET MVC and noSQL (which will be gained ...

Tech: C# 5, Visual Studiuo, AWS, Angular.JS, Bootstrap, Docker Challenge: Greenfield Financial platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 30 man flat Dev Team Pay: 70k, Bonus- training budget, Pension, Life/Health, Some Flex WorkingC# Senior Developer FintechQuant Capital … looking for a C# developer who wants to work in a tech driven bleeding edge business creating truly greenfield products. Working within the Development team the C# Developer will helping to introduce a new architecture as well as creating new products. This role also involves a clear career progression ...

Tech: ASP.NET MVC 5, Restful API, Angular, SQL, Azure Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 10 man flat Dev Team Pay: 40k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingJunior ASP.NET MVC Developer … FintechQuant is urgently looking for an ASP.NET MVC Developer to join our high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is well known in the WRAP and SIPP market as a full service provider.The environment is that ...

contribute to the design, implementation, and maintenance of new features and platform enhancements. You will work as part of a collaborative team, following best development practices to deliver high-quality software that meets business needs.Key ResponsibilitiesParticipate in the design, development, and testing of platform features adhering to Edenred … with peers and senior engineers to deliver software that meets quality and performance benchmarks.Support knowledge sharing through documentation and teamwork to ensure maintainability.Follow agreed development processes and contribute to continuous improvement of our platform and practices.Work collaboratively to deliver projects on time and to specification.Core Technical SkillsExperience with Java ...

ASP.NET Developer – FintechTech: C# .net, Azure, SQL, Team City, GIT, TFS Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known Insurtech software business, West London, 10 man flat Dev Team Pay: 65k Some Flex WorkingQuant is urgently looking for an ASP.NET MVC Developer to join … high profile client.Current challenges include cloud migration, greenfield trading platform development, and bank-based API creation. Our client is a well-known fintech software house in central London.This is an expansionary role building a greenfield financial modelling platform used by major finance business’.Working together with our team ...

gender expression, disability, origin, religious belief and sexual orientation or any other criteria. Software Engineer – Edenred PayTech Location: London/Swindon Department: Technology & Product Development About Edenred PayTech Edenred PayTech is a leading global e-money institution, processing over €100bn in payments annually across more than 30 countries. … contribute to the design, implementation, and maintenance of new features and platform enhancements. You will work as part of a collaborative team, following best development practices to deliver high-quality software that meets business needs. Key Responsibilities Participate in the design, development, and testing of platform features adhering ...

every tool at their disposal — including generative AI — to ship quality work faster than anyone thought possible. Key Responsibilities Lead the design, development, and delivery of full-stack applications, owning technical direction from architecture through production deployment Drive technical decisions and trade-offs, communicating rationale clearly to both engineering … peers and non-technical stakeholders Leverage generative AI tools (coding assistants, LLM APIs, AI-augmented workflows) to accelerate development, improve code quality, and build AI-powered features into products Architect and implement cloud-native systems using containerized deployments, infrastructure as code, and modern CI/CD practices Identify ...

Tech: ASP.NET MVC 5, JavaScript, Angular 2, Entity Framework, WEB API, JQuery, MySQL, MicroservicesChallenge: Greenfield Trading platform, API development, Azure development.Firm: Well known FX fintech50 business, City of London, 10 Man flat Dev TeamPay: 110k, Bonus, Pension, Life/Health, Some Flex Working, HybridFull Stack Developer FintechQuant … urgently looking for a Full Stack Developer to join our high profile client.Current challenges include cloud migration, greenfield trading platform development, and bank based API creation.Our client is a well known broker in the equities space. They are currently building a greenfield trading platform based in equities.The environment ...

Tech: ASP.NET MVC 5, JavaScript, Angular 2, Entity Framework, WEB API, JQuery, MySQL Challenge: Greenfield Trading platform, API development, Azure development. Firm: Well known FX fintech50 business, City of London, 10 Man flat Dev Team Pay: 65k, Bonus, Pension, Life/Health, Some Flex WorkingASP.NET MVC Developer … FintechQuant is urgently looking for an ASP.NET MVC Developer to join our high profile client.Current challenges include cloud migration, greenfield trading platform development, and bank based API creation.Our client is a well known broker in the equities space. They are currently building a greenfield trading platform based ...

technical stakeholders Contribute to CI/CD and automated deployment Support production systems and continuous improvement What we're looking for Strong commercial Java development experience Spring Boot and Microservices REST API development SQL and database design Oracle experience Unix or Linux JUnit and automated testing ...

energized by technical leadership, modern cloud technologies, and building products at scale, we'd love to hear from you. Responsibilities Lead the design and development of large-scale software solutions that support critical business capabilities Shape technical architecture and engineering standards across multiple products and teams Build modern, cloud … design principles Contribute across the full technology stack, from user interfaces to APIs and backend services Mentor engineers and provide technical guidance on complex development initiatives Drive best practices in software quality, performance, security, and maintainability Collaborate closely with Product, Engineering, and Architecture teams to translate business needs into ...

energized by technical leadership, modern cloud technologies, and building products at scale, we'd love to hear from you. Responsibilities Lead the design and development of large-scale software solutions that support critical business capabilities Shape technical architecture and engineering standards across multiple products and teams Build modern, cloud … design principles Contribute across the full technology stack, from user interfaces to APIs and backend services Mentor engineers and provide technical guidance on complex development initiatives Drive best practices in software quality, performance, security, and maintainability Collaborate closely with Product, Engineering, and Architecture teams to translate business needs into ...