1 to 25 of 325 Permanent API Development Jobs

/CD processes • Investigate and resolve technical issues, defects, performance problems and production incidents • Address security, accessibility, privacy, resilience, scalability and performance throughout the development lifecycle • Contribute to technical documentation, knowledge sharing, development standards, patterns and best practices • Support an inclusive engineering culture and mentor colleagues where appropriate … Experience with RESTful APIs and integration with external or internal services Experience with automated unit and integration testing Experience using Git and modern software development workflows Understanding of clean code, modularity, maintainability, version control and design patterns Experience diagnosing and resolving application defects, performance issues and production problems Understanding ...

Senior .Net Developer, C#/VB.Net, API, SQL, NW London to £85K A Back End Developer is required to join this established financial software house based in North London. They work with some of the leading brands in retail and media, offering financial management systems developed in house … required with expertise in Visual Basic .NET, C#, SQL Server, and SAP Business One integration. The ideal candidate should have strong skills in RESTful API development, database optimization, and Azure DevOps pipeline management. Knowledge of API security, CI/CD automation, and Swagger documentation is recommended. Responsibilities ...

Senior .Net Developer, C#/VB.Net, API, SQL, NW London to £85K A Back End Developer is required to join this established financial software house based in North London. They work with some of the leading brands in retail and media, offering financial management systems developed in house … required with expertise in Visual Basic .NET, C#, SQL Server, and SAP Business One integration. The ideal candidate should have strong skills in RESTful API development, database optimization, and Azure DevOps pipeline management. Knowledge of API security, CI/CD automation, and Swagger documentation is recommended. Responsibilities ...

responsible for designing, developing and maintaining software solutions that support the continued evolution of the Lima platform. This role combines full-stack software development with practical experience in AI-assisted software engineering, helping to identify opportunities where AI can improve software quality, developer productivity and innovation. The Software Developer … supports the adoption of AI-assisted development practices across the team, promoting knowledge sharing and encouraging the effective, secure and responsible use of AI technologies throughout the software development lifecycle. Working closely with the Head of Lima Development (technical leadership and delivery), the Product Manager (product strategy ...

define technical requirements, make trade-offs and ensure that solutions are both sustainable and maintainable in the long term. Experience with mobile app development, particularly React Native, is a strong plus and a passion for promoting wellbeing and reducing stress through technology is essential. This role requires wearing many … including monitoring and maintenance Passionate about building innovative solutions and thriving as an individual contributor (IC) within a dynamic team Experience with mobile app development (React Native) is a plus, especially for those with strong web frontend experience An interest in reducing stress and promoting wellbeing through technology Experience ...

Tech: ASP.NET MVC 5, Restful API, Angular, SQL, Azure Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known fintech50 business, 10 man flat Dev Team Pay: 75k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingLead ASP.NET MVC Developer FintechQuant is urgently … looking for a Lead 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 ...

Focus on greenfield development and improvement of existing systems Build REST APIs Engineer microservices Evolve systems supporting card payments, treasury management, transaction booking, and crypto liquidity Develop predominantly with Java 25 on the backend and PostgreSQL Use Spring Boot for delivery Develop business logic with emphasis on clean, maintainable … delivery Collaborate with a talented team to create solutions that drive financial inclusion and transform how people manage money Requirements Demonstrable experience in Backend development, with fluency in Java Bachelor's Degree (or above) in Computer Science, Mathematics, Physics, or other Engineering/Science disciplines Quick learner with ...

powered applications, intelligent agents, APIs, and integrations while ensuring solutions align with enterprise architecture, security standards, and AI governance policies.**Essential Responsibilities****AI Solution Development*** Design, develop, deploy, and maintain AI-powered applications, intelligent agents, and automation solutions.* Build AI workflows utilizing Large Language Models (LLMs), Retrieval Augmented Generation … practical solutions that deliver measurable business value.* Monitor AI solution performance and continuously improve accuracy, reliability, cost efficiency, and user experience.**Full-Stack Application Development*** Design, develop, test, and maintain modern web applications using front-end and back-end technologies.* Build secure RESTful APIs, microservices, and system integrations.* Develop ...

Software Engineer API's and Integration | Java/TypeScript | AWS | APIs Permanent, Market+ Salary and Bonus Location: UK Remote, Home-Based We're looking for an API Software Engineer to join a growing engineering team responsible for building and evolving a critical API platform sitting between customer … enjoys working on APIs, integrations and cloud-native platforms , and wants to play a key role in the evolution from a mature Java-based API platform to a modern TypeScript architecture . The platform is already live and being used by major third parties, with the next phase focused ...

days onsite is mandatory) Rate: £400 - £475 Role Summary We are looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures . This role focuses on building secure, scalable identity and access workflows … orchestrate identity provisioning and identity lifecycle management. Build policy-based orchestration workflows for adaptive authentication and contextaware access using industry standards (like OPA). API Development Design, build, and secure RESTful APIs and backend services supporting identity, provisioning, and governance workflows. Integrate APIs with our new authentication service ...

Software Engineer – APIs & Integration | TypeScript | AWS | REST APIs Permanent | Market+ Salary + Bonus UK Remote | Home-Based We're looking for an experienced API Software Engineer to join a growing engineering team building and evolving a critical API platform that sits between customer-facing applications, third parties … Lead and wider technical teams. Designing, developing and maintaining REST APIs used by internal and external customers. Building new functionality using TypeScript and modern API development practices. Developing new API endpoints and services as the platform continues to evolve. Building integrations between external applications, third-party systems ...

designing, developing, and supporting enterprise-wide integration solutions using the Boomi AtomSphere Integration Platform. The successful candidate will have deep expertise in middleware development, APIs, enterprise application integration, cloud technologies, and system architecture. This position offers the opportunity to work on enterprise-scale initiatives while partnering with business leaders … developing, implementing, and supporting enterprise integration solutions across cloud and on-premise applications. This individual will serve as a technical leader for integration architecture, API development, middleware governance, and enterprise connectivity while ensuring secure, reliable, and scalable integration services. The ideal candidate possesses extensive experience with Boomi, REST ...

global business and technology consultancy seeking a API Platform Lead to work for our client within the Financial Services sector. This is initially a 6-12 month contract with the potential to extend and will be a hybrid role that will be based in Edinburgh. Our client is seeking … Platform Engineering Lead to own the strategy, engineering, governance, and operation of critical enterprise platforms, with a particular focus on API and integration capabilities. This role will lead the evolution of a global API platform, enabling secure, scalable, and reusable services across multiple product and engineering teams. ...

days a week onsite)- £40-50k depending on experience We're looking for a Mid-Level Node.js Developer to join a growing development team working on a technology led QA and automation platform. This is a hands on development role where you'll be building and improving … using Node.js and TypeScript. You'll work closely with other developers and wider technical teams in a collaborative, TDD focused environment, contributing to the development of reliable, scalable software. Skills & Experience Required- 2-3 years of commercial experience developing applications with Node.js Strong knowledge of Typescript Good understanding ...

range of well-known clients. You'll work across backend services, APIs and cloud infrastructure, while also having the opportunity to contribute to frontend development where appropriate. Working within a collaborative product team, you'll be involved throughout the software development lifecycle, helping to deliver secure, high-performing … application architecture. Contribute to technical discussions and continuous improvement initiatives. Tech Stack Essential C# .NET/.NET Core TypeScript REST APIs Microsoft Azure Backend Development API Development Desirable React Node.js Azure Functions CI/CD Infrastructure as Code Docker Microservices Headless CMS Cloud-Native Development About ...

range of well-known clients. You'll work across backend services, APIs and cloud infrastructure, while also having the opportunity to contribute to frontend development where appropriate. Working within a collaborative product team, you'll be involved throughout the software development lifecycle, helping to deliver secure, high-performing … application architecture. Contribute to technical discussions and continuous improvement initiatives. Tech Stack Essential C# .NET/.NET Core TypeScript REST APIs Microsoft Azure Backend Development API Development Desirable React Node.js Azure Functions CI/CD Infrastructure as Code Docker Microservices Headless CMS Cloud-Native Development About ...

Description: Software Development Engineer For over two decades, Aspirion has delivered market-leading revenue cycle services. We specialize in collecting challenging payments from third-party payers, focusing on complex denials, aged accounts receivables, motor vehicle accident, workers' compensation, Veterans Affairs, and out-of-state Medicaid. At the core … health system partners. Aspirion maintains a strong partnership with Linden Capital Partners, serving as our trusted private equity sponsor. We are seeking a Software Development Engineer (SDE) to play a key role in designing, developing, and delivering high-quality software solutions to drive innovation and operational excellence. This role ...

This is one of the bank's first major Agentic AI initiatives and is considered a highly visible, strategic program. Role Overview • Hands-on development role with a strong coding focus. • Resources will primarily be building, enhancing, and supporting AI agents rather than spending significant time in meetings. • Daily … orchestration concepts. • Experience working with MongoDB and vector databases. • Financial services experience is not required. Required Experience • Python: 5+ years • Microservices: 5+ years • API Development/Integration: 5+ years • MongoDB: 5+ years • Agentic AI: 2+ years preferred Why Candidates Are Interested • Opportunity to work on cutting-edge Agentic ...

department at Cardiff and Vale University Health Board. The successful candidate will join the Digital Service Transformation team. Our focus is on software development, integration, and interoperability. We are looking for an organised, enthusiastic and motivated individual, who can work in a rapidly changing and challenging environment. This post … Essential Degree or equivalent experience Desirable Post Graduate qualification in an I.T. related subject Experience Essential IT experience, managing all aspects of the systems development life-cycle. Management within a large complex organisation, of in-house software or API development Systems with responsibility ...

Tech: C# .Net, ASP.NET, WPF, MySQL Challenge: Greenfield High Data Throughput platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 10 man flat Dev Team Pay: 80k, Bonus- training budget, Pension, Life/Health, Some Flex Working Development Team Lead Fintech Quant … Lead Developer will• Manage the Dev. team including recruitment • Build and deliver business requirements • Collaborate with Product Owner on defining development requirements and schedule • Become enlightened on the system architectureThe environment is that of Facebook or Google, relaxed open with time to think and make the right decisions. ...

pipelines and deployment automation. Participate in peer reviews, code reviews, and design discussions. Troubleshoot and resolve application, platform, and integration issues. Support deployments across development, test, and production environments. Develop technical documentation and operational runbooks. Ensure solutions meet security, performance, scalability, and resilience requirements. Collaborate with engineering, security, architecture … Drive continuous improvement and automation across the engineering lifecycle. Required Skills & Experience Essential Strong software engineering background. Experience building cloud-native applications and services. API development expertise, including RESTful services. Experience with microservices and distributed architectures. Event-driven architecture Experience. Hands-on Experience with Kubernetes and containerised environments. ...

/d Umbrella inside IR35 About The Project The Developer Experience (DevX) Standards and Controls function is building a platform for control owners and development teams to manage/view their compliance with a range of software development controls. The candidate would be working on Kotlin and Java … built using modern coding techniques. Role purpose/summary Experience in Kotlin (or significant Java experience with a willingness to learn Kotlin) Experienced in API development, SQL/databases, HTML/Javascript Excellent writing skills and attention to detail in code Proactive person who will not wait ...

though also like the idea of the equally important social/client-facing aspect of the role. The role is responsible for defining the development architecture across a blend of in-house bespoke solutions and 3rdparty products and helping to shape the longer-term strategic development architecture … developing architecture strategy and target architecture model. You will be working closely with delivery team members to coach and promote best-practice solution development architecture as well as supporting business analysts and product owners in planning and story-mapping for new development. You will act as technical design authority ...

Ideally looking for experience in - expertise in LookML Semantic model Development - Development of custom visualisations using Looker API - Development of custom calculations using link vertex AI - Creation of LookML dashboards - Ability to use strong Github expertise Head of Data, Analytics & Digital Transformation Manchester City Centre, Greater ...

Full-Time/Contract TBA Job Summary: We are seeking an experienced Software Developer with strong skills in .NET technologies, Azure cloud services, REST API development, and SQL Server. The ideal candidate will have a proven track record in building scalable business applications, working in Agile teams … both backend and frontend environments. Job Description: We are seeking an experienced Software Developer with strong skills in .NET technologies, Azure cloud services, REST API development, and SQL Server . The ideal candidate will have a proven track record in building scalable business applications, working in Agile teams ...