201 to 225 of 383 Permanent API Development Jobs

value of technology and build a more sustainable, more inclusive world. Your Role We are seeking passionate and experienced Senior Kotlin Developer with strong backgrounds in Spring Boot and API design. The ideal candidates are forward-thinking individuals with a senior developer's mindset, capable of driving complex features end-to-end and collaborating with cross-functional teams to … to deployment. Define technical solutions aligned with business objectives and ensure scalability, security, and maintainability. Create robust, efficient, and scalable APIs for frontend integration. Promote best practices in RESTful API design, documentation, and implementation. Work closely with technical and product stakeholders to clarify requirements and align on deliverables. Translate business needs into technical solutions and maintain clear communication across … teams Proactively identify and address technical challenges, driving continuous improvement in the codebase and processes. Stay updated with the latest trends in Kotlin, Spring Boot, and API design. Work closely with Mobile and Web FE team to build Backend for Frontend that enables faster scalable FE development Your Profile Proficiency in Kotlin and Spring Boot with hands-on More ❯

expertise Define AI complexity to ensure optimal ROI and feasibility What We're Looking For: Expert-level experience with GPT and prompt engineering Mastery of Python and cloud-native development (Azure AI Services, Azure Functions) Experience with agentic AI frameworks like OpenAI Agent SDK or MCP Tools Strong skills in REST API development, containerization (Docker), and DevOps … environment to grow your AI expertise An influential role shaping AI strategy with enterprise-wide impact Collaborative, agile culture focused on innovation and knowledge sharing Continuous learning and career development opportunities Flexible hybrid work model balancing remote and on-site collaboration Meaningful impact on business transformation across multiple sectors Competitive salary and benefits aligned with your experience More ❯

the Southern Command Operations, Planning, and Engagement Support (SCOPES) program. This position will reside in the Office of the Chief Data Officer as part of a project spanning various development, data science, and knowledge management functions. This position requires a strong background in software development, data engineering principles, and cloud technologies. The ADVANA Developer will contribute to building … and enhancing capabilities that enable data-driven decision-making for SOUTHCOM. Responsibilities: • Design and Development: Participate in the full software development lifecycle, including requirements gathering, system design, development, testing, and deployment of applications and data pipelines within the ADVANA environment. • Data Engineering: Develop and maintain robust and scalable data pipelines to ingest, transform, cleanse, and integrate data … from various DoD source systems into the ADVANA data lake. • Cloud Technologies: Utilize and contribute to the development within ADVANA's cloud based architecture, leveraging cloud-native services for data storage, processing, and analytics. • Programming and Scripting: Write efficient and maintainable code in languages such as Python, Java, SQL, and others relevant to the ADVANA technology stack. • API More ❯

autonomy and clean architecture are valued. The role combines hands-on technical contribution with the opportunity to shape processes and practices. You will: Work on a Greenfield project Lead development efforts using C#, Ruby on Rails and PHP (Symfony), with a strong focus on object-oriented programming Guide backend infrastructure work using AWS, Terraform and Helm Mentor three direct … reports and foster technical growth across your team Contribute to API development, architectural discussions and containerisation efforts (Kubernetes) Collaborate with Product Managers and other Tech Leads to align engineering efforts with business goals About you You are likely an experienced backend developer with a history of working across multiple technologies and leading high-performing teams. You will bring … Proven experience in object-oriented development, ideally with Ruby, C# or PHP (or other OO languages such as Java) A strong understanding of cloud infrastructure, especially within AWS environments Familiarity with infrastructure as code tools such as Terraform or Helm Confidence in mentoring and developing others, with a people-first approach to leadership A keen eye for clean code More ❯

autonomy and clean architecture are valued. The role combines hands-on technical contribution with the opportunity to shape processes and practices. You will: Work on a Greenfield project Lead development efforts using C#, Ruby on Rails and PHP (Symfony), with a strong focus on object-oriented programming Guide backend infrastructure work using AWS, Terraform and Helm Mentor three direct … reports and foster technical growth across your team Contribute to API development, architectural discussions and containerisation efforts (Kubernetes) Collaborate with Product Managers and other Tech Leads to align engineering efforts with business goals About you You are likely an experienced backend developer with a history of working across multiple technologies and leading high-performing teams. You will bring … Proven experience in object-oriented development, ideally with Ruby, C# or PHP (or other OO languages such as Java) A strong understanding of cloud infrastructure, especially within AWS environments Familiarity with infrastructure as code tools such as Terraform or Helm Confidence in mentoring and developing others, with a people-first approach to leadership A keen eye for clean code More ❯

users to use social media or stream their favourite films and series on Netflix. What skills youll be needing C# .Net, Entity Framework, SQL/NoSQL databases, Cloud. REST API development using C# and ASP .Net Core. Computer Science fundamentals in data structures, algorithm design and complexity analysis. Experience developing, deploying and maintaining APIs onto AWS or Azure. … tests to system and integration tests. Willingness to develop across multiple platforms and architectures. Genuinely passionate about changing lives with assistive technology. What youll be doing Joining a growing development team, you will get involved in the full product lifecycle: understanding customer and business needs, idea generation, planning, designing and developing solutions and supporting features after theyve launched. The … insurance. Theres 25 days holiday plus BHs, flexible hours and hybrid working minimum 2 days a week to be spent in their Bristol office. They support continual learning and development to help you to reach your professional goals and as the development team continues to grow there will be opportunities to coach/mentor others if that appeals. More ❯

into engineering leadership or continue developing your technical expertise with a focus on architecture, the role offers a clear path in both directions. Key Responsibilities: Lead the design and development of scalable, high-performance backend systems. Establish and enforce best practices for backend development and system architecture. Provide solutions to complex technical challenges and continuously improve the product … background in multithreaded backend languages (Kotlin, Java, Go, Rust, etc.). Experience working in the HealthTech space Strong experience with PostgreSQL or similar relational databases. Proficient in system design, API development, and microservices architecture. Hands-on experience with cloud platforms (AWS, GCP), containerisation (Docker), and orchestration (Kubernetes). Experience in start-up environments is a plus, as the More ❯

Java Developers to partner with a financial services-based organisation to deliver cutting-edge solutions that drive real business value. The successful Java Developer who's passionate about backend development and building scalable, secure systems. If you thrive on solving complex problems and working in collaborative, agile environments - we'd love to hear from you. What You'll Be … high-performing. What We're Looking For: Strong experience in Java (v8 or above). Proven expertise with Spring Boot and the wider Spring Framework. Solid understanding of RESTful API design and development. Experience with microservices architecture. Proficiency in SQL and working with relational databases. More ❯

Developers to partner with a financial services-based organisation to deliver cutting-edge solutions that drive real business value. The successful Java Developer who's passionate about Back End development and building scalable, secure systems. If you thrive on solving complex problems and working in collaborative, agile environments - we'd love to hear from you. What You'll Be … high-performing. What We're Looking For: Strong experience in Java (v8 or above). Proven expertise with Spring Boot and the wider Spring Framework. Solid understanding of RESTful API design and development. Experience with microservices architecture. Proficiency in SQL and working with relational databases. More ❯

weeks) and paid holidays Transparent, people-first culture Discounted gym memberships Dependent care reimbursement accounts Employee assistance and discount programs Required qualifications: 7-15 years of full-stack development experience, including building complex systems from scratch. Demonstrated experience in: RESTful API development Modern JavaScript frameworks for front-end development Database design and integration Unit and End More ❯

direction and architectural decisions • Contribute to a high-feedback, asynchronous team culture Essential Criteria • 8–10+ years in software engineering, preferably in cloud-first or SaaS companies • Strong backend development experience with either: Golang, ideally with experience in Kubernetes-based systems • Proven experience in distributed systems and asynchronous architecture • Familiarity with scalable API development (REST/GraphQL More ❯

offer a fantastic benefits package including a 30% bonus scheme, private healthcare, salary sacrifice, car share scheme & more! Requirements- 7+ years in developing C#/.NET (.NET Core ideally) API Design & Development OOP Azure Personal attributes- fantastic communication skills Ability to work in a fast-paced environment A Keen problem solver Someone who is Methodical ***Please note you More ❯

complex information to diverse audiences, motivate others, and adapt communication style accordingly. Experience leading technological change, with relevant stories to tell. Proficiency in technologies such as cloud, platform engineering, API development, message buses, workflow engines, etc., and programming languages like C, C++, C#.NET, Python, PHP. Advocate for Agile methodologies, with the ability to drive Agile delivery, and a More ❯

/CD for data systems, and robust testing methodologies. Highly desirable skills include: Domain Experience: Familiarity with the unique structure of sports data (e.g., event, tracking, scouting, video). API Development: Experience building data-centric APIs, especially with FastAPI on serverless platforms like Google App Engine . Streaming Data: Practical experience building real-time data pipelines. DevOps & MLOps More ❯

/CD for data systems, and robust testing methodologies. Highly desirable skills include: Domain Experience: Familiarity with the unique structure of sports data (e.g., event, tracking, scouting, video). API Development: Experience building data-centric APIs, especially with FastAPI on serverless platforms like Google App Engine . Streaming Data: Practical experience building real-time data pipelines. DevOps & MLOps More ❯

/CD for data systems, and robust testing methodologies. Highly desirable skills include: Domain Experience: Familiarity with the unique structure of sports data (e.g., event, tracking, scouting, video). API Development: Experience building data-centric APIs, especially with FastAPI on serverless platforms like Google App Engine . Streaming Data: Practical experience building real-time data pipelines. DevOps & MLOps More ❯

/CD for data systems, and robust testing methodologies. Highly desirable skills include: Domain Experience: Familiarity with the unique structure of sports data (e.g., event, tracking, scouting, video). API Development: Experience building data-centric APIs, especially with FastAPI on serverless platforms like Google App Engine . Streaming Data: Practical experience building real-time data pipelines. DevOps & MLOps More ❯

/CD for data systems, and robust testing methodologies. Highly desirable skills include: Domain Experience: Familiarity with the unique structure of sports data (e.g., event, tracking, scouting, video). API Development: Experience building data-centric APIs , especially with FastAPI on serverless platforms like Google App Engine . Streaming Data: Practical experience building real-time data pipelines. DevOps & MLOps More ❯

governance, streaming architectures, Open Table Formats, etc. - Proficiency in at least one programming language (e.g., Python, Java, Scala, etc.) plus SQL. CI/CD experience and working knowledge of API development. - Ability to lead technical teams and facilitating discussions regarding technical/architectural trade-offs, best practices and risk mitigation. This is a hands-on leadership role. - Bachelor's … degree in Computer Science, Engineering, Mathematics or related field with 3+ years experience. PREFERRED QUALIFICATIONS - Full-stack development experience e.g. React/Angular and integration with backend - AWS experience or working knowledge of AWS partner solutions like Databricks or Snowflake - Expertise of implementing GenAI in production including LLMs, RAG architectures, vector databases. - Experience with automation and scripting (e.g., Terraform More ❯

Join us as a Fullstack API Developer Lead at Barclays, where you'll take part in the evolution of our digital landscape, driving innovation and excellence. You'll use the latest tech to revolutionise our digital offerings making sure our customers have the best experience possible. To be successful as a Fullstack API Developer Lead, you should have … experience with: Good manual experience on Java8/17 RESTful API, Spring boot, microservices architecture Development with AWS, lambda, API gateway, DynamoDB Some other highly valued skills may include: TDD, Junit, CT CIT Basic design principle knowledge Problem solving skills You may be assessed on the key critical skills relevant for success in role, such as risk … in Knutsford. Purpose of the role To design, develop and improve software, utilising various engineering methodologies, that provides business, platform, and technology capabilities for our customers and colleagues. Accountabilities Development and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance. Cross-functional collaboration More ❯

Java API Developer x3 Northampton £55,000 - £60,000 + Benefits A leading consultancy-based organisation is currently looking to recruit a number of Java API Developers to partner with a financial services-based organisation who have a passion for designing and building robust, scalable applications. The successful skilled developer will join a dynamic engineering team, where you … in peer code reviews and contribute to continuous improvement Ensure systems are secure, scalable, and optimised for performance Skills & Experience: Strong hands-on experience in Java, Spring Boot, and API Gateway Solid understanding of OOP, Core Java, and Advanced Java Proficient with REST API, Spring Core, Spring MVC, and Microservices Architecture Familiarity with tools and technologies such as … Maven, Gradle SOAP, Junit, Oracle Jenkins, Nexus Git, JBoss/Tomcat Linux/UNIX shell scripting JIRA, Exec API Exposure to cloud platforms (e.g., OpenShift V3, AWS, or Spring Cloud) is desirable More ❯

public holidays observed in the Republic of Ireland. Mandatory Requirements (Pass/Fail) ü Experience Level: The candidate must have more than 1+ years of relevant Java/JEE Development experience at a junior level. ü Availability: The candidate must be available to commence work from 3rd November 2025. ü English Language Proficiency: The candidate must be fluent in … with experience using industry-standard frameworks, e.g. Quarkus/Spring Boot. Coding in adherence to the standards of the application in question. Completing assigned tasks related to phases of development lifecycle of enterprise applications within given scope and timeframes requirements. Maintaining, tuning and repairing applications to keep them performing according to technical and functional specifications. Performing preventive maintenance activities … Microservice and API development (RESTful, experience of REST design and implementation). Understanding API security protocols (OAuth 2.0/0penID Connect). Knowledge of Kubernetes, API managers and WebLogic. Experience with OpenShift Container platform, 3scale API and KeyCloak. Testing frameworks and TDD (like Cucumber or Junit). Databases: Relational (Oracle). Integration of technical and More ❯

is expanding their technology team and seeking an experienced Cloud Integration Developer to join them for a 12-month contract. Role Overview: As part of their growing in-house development team, you'll define, design, and develop new features and capabilities, focusing on cloud services and architectures. The role involves creating tools and apps that enhance their data platform … directly impacting member experiences and back-office processes. Key Responsibilities: Designing scalable cloud architectures for workflow automation Integration of CRM, Finance, and other SaaS products Development of microservices and event-driven architectures Maintaining and improving our current tech stack Technical Requirements: 6+ years' experience in complex, multi-platform environments Strong background in Azure cloud architecture and deployment Proficiency in … TypeScript and Node.js Experience with enterprise middleware technologies Knowledge of API development and management Package & Working Pattern: Salary up to £80,000 per annum Performance-related bonus Comprehensive benefits package 2 days in our London office Fixed-term contract (12 months) Their approach is agile and data-driven, emphasizing collaboration within a cross-functional product team. #CloudComputing #Azure More ❯

is expanding their technology team and seeking an experienced Cloud Integration Developer to join them for a 12-month contract. Role Overview: As part of their growing in-house development team, you'll define, design, and develop new features and capabilities, focusing on cloud services and architectures. The role involves creating tools and apps that enhance their data platform … directly impacting member experiences and back-office processes. Key Responsibilities: Designing scalable cloud architectures for workflow automation Integration of CRM, Finance, and other SaaS products Development of microservices and event-driven architectures Maintaining and improving our current tech stack Technical Requirements: 6+ years' experience in complex, multi-platform environments Strong background in Azure cloud architecture and deployment Proficiency in … TypeScript and Node.js Experience with enterprise middleware technologies Knowledge of API development and management Package & Working Pattern: Salary up to £80,000 per annum Performance-related bonus Comprehensive benefits package 2 days in our London office Fixed-term contract (12 months) Their approach is agile and data-driven, emphasizing collaboration within a cross-functional product team. #CloudComputing #Azure More ❯

Description Position: Software Architect - Expert Location: Northern VA Clearance: TS/SCI Overall Assignment Description: Expert-level Software Architects lead the design and development of software solutions for complex applications problems, API design, data services, platform services, cloud services and infrastructure services to meet user requirements and align to strategic goals and the Enterprise Architecture. The Expert-Level … coding standards, tools, and platforms. The Expert-level Software Architect provides technical and software engineering support towards a model-based systems engineering approach to IT requirements engineering and architecture development, targeted at the Enterprise, Segment, and Solution Engineering levels. This consists of developing and transforming the A gency IT EA framework, processes & tools to realize EA vision, and the … SaaS, PaaS, custom software, third party offerings, open source and other technology components. Ensure a loosely coupled architecture through the use and management of APIs (e.g., REST, OData, AWS API management tools, etc ) as well as microservices. Establish standards and guardrails for internal and external use. Provide architectural guidance to support Agile/DevSecOps software development solutions, modern More ❯