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13 Permanent API jobs in Hemel Hempstead + 20 miles
152 exact matches jobs are outside your preferred location
Senior Software Development Engineer in Test - Unleash Innovation with Mimecast! Join the momentum behind our award-winning platform at Mimecast! Embark on a journey with our Governance, Compliance, and Insights (GCI) and Threat Reporting and Response (TRR) engineering teams. As a vital part of Quality Engineering, you'll play a key role in elevating the quality of our archiving and security software. Together, were harnessing cutting-edge solutions that empower our customers to master Human Risk Management on an unprecedented scale. Dive in and be part of the future! Why Join Our Team? If you have a passion for creatively addressing complex challenges and wish to implement innovative solutions to develop and scale reliable, high-performing software in both private and public cloud environments, then the GCI and TRR teams are the perfect fit for you.
Senior Software Development Engineer in Test - Unleash Innovation with Mimecast! Join the momentum behind our award-winning platform at Mimecast! Embark on a journey with our Governance, Compliance, and Insights (GCI) and Threat Reporting and Response (TRR) engineering teams. As a vital part of Quality Engineering, you'll play a key role in elevating the quality of our archiving and security software. Together, were harnessing cutting-edge solutions that empower our customers to master Human Risk Management on an unprecedented scale. Dive in and be part of the future! Why Join Our Team? If you have a passion for creatively addressing complex challenges and wish to implement innovative solutions to develop and scale reliable, high-performing software in both private and public cloud environments, then the GCI and TRR teams are the perfect fit for you.
At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Superpowered by creativity and design. All underpinned by technology created with purpose. As a Agile Business Analyst Consultant, you will be joining the growing and exciting Digital Excellence community who are continually sharing knowledge and expertise. We are all passionate about user-centred design, critical thinking, problem solving and designing and building digital services and products. Working at Capgemini Invent would give you opportunities to develop and grow, working with major clients in both p
At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Superpowered by creativity and design. All underpinned by technology created with purpose. As a Agile Business Analyst Consultant, you will be joining the growing and exciting Digital Excellence community who are continually sharing knowledge and expertise. We are all passionate about user-centred design, critical thinking, problem solving and designing and building digital services and products. Working at Capgemini Invent would give you opportunities to develop and grow, working with major clients in both p
Experience in consuming a RESTful API.
Experience in consuming a RESTful API.
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Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
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Ability to learn and speak to eBays API, feeds, and other pathways for onboarding
Ability to learn and speak to eBays API, feeds, and other pathways for onboarding
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API calls, metadata and orchestrating principles
API calls, metadata and orchestrating principles
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Experience with AWS, Kubernetes, Service Mesh, and API Security (including authentication and authorization).
Experience with AWS, Kubernetes, Service Mesh, and API Security (including authentication and authorization).
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Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
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Experience with AWS, Kubernetes, Service Mesh, API gateways, and API Security (authentication and authorization).
Experience with AWS, Kubernetes, Service Mesh, API gateways, and API Security (authentication and authorization).
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Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
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Investigate and resolve production issues promptly from user interface (UI) through to application logic (API & database) and infrastructure
Investigate and resolve production issues promptly from user interface (UI) through to application logic (API & database) and infrastructure
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Cloud Security: Strong knowledge of AWS and Azure, especially services like WAF, Shield, IAM, and API Gateway
Cloud Security: Strong knowledge of AWS and Azure, especially services like WAF, Shield, IAM, and API Gateway
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Automated end-to-end and API testing tools and techniques
Automated end-to-end and API testing tools and techniques
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Experience creating RESTful APIs and ensuring API extensibility.
Experience creating RESTful APIs and ensuring API extensibility.
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Collaborate with backend teams on API integration and implementation - Experience with state management solutions (Context API)
Collaborate with backend teams on API integration and implementation - Experience with state management solutions (Context API)
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Show technical leadership, by identifying best practices for API integration and assisting customers with their implementation
Show technical leadership, by identifying best practices for API integration and assisting customers with their implementation
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Code quality and API-First principles are at the heart of all our development. * Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. * An interest in setting strategy and direction, backed by real-work experience, ideally in an API-First setting. * Experience designing, building, and deploying scalable micro-services using API-First principles using at least one of REST/gRPC. * Strong understanding of RESTful API design principles and best practices. * Experience with API authentication and authorization mechanisms (e.g., OAuth, JWT). * Experience with API gateway technologies (e.g., Apigee, Kong) is beneficial.
Code quality and API-First principles are at the heart of all our development. * Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. * An interest in setting strategy and direction, backed by real-work experience, ideally in an API-First setting. * Experience designing, building, and deploying scalable micro-services using API-First principles using at least one of REST/gRPC. * Strong understanding of RESTful API design principles and best practices. * Experience with API authentication and authorization mechanisms (e.g., OAuth, JWT). * Experience with API gateway technologies (e.g., Apigee, Kong) is beneficial.
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Web Services and API knowledge and understanding of conceptual use.
Web Services and API knowledge and understanding of conceptual use.
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In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
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This includes proficiency with Anypoint Studio, DataWeave for data transformation, and API-led connectivity design principles (RAML or OAS for defining APIs). Strong grasp of RESTful API design, SOAP services, and integration patterns. Familiar with data formats like JSON and XML for API communication. Experience implementing secure APIs (OAuth2.0, JWT) and managing APIs through MuleSofts API manager or similar.
This includes proficiency with Anypoint Studio, DataWeave for data transformation, and API-led connectivity design principles (RAML or OAS for defining APIs). Strong grasp of RESTful API design, SOAP services, and integration patterns. Familiar with data formats like JSON and XML for API communication. Experience implementing secure APIs (OAuth2.0, JWT) and managing APIs through MuleSofts API manager or similar.
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Company Description - Why does this matter? Because our platform makes trading fixed-income more accessible, ultimately improving transparency, efficiency, and competition in the marketplace. Changing the way an established industry transacts is no easy feat. There will be twists and turns, because no ones ever done this before. But now, more than 2,000 clients around the world rely on our solutions, and that number is only expected to grow in the years ahead. We know where were going. How we get there is up to us. Join us and help Take Us There. The Role - We are looking for a Senior Technical Product Manager (TPM) to join our software engineering team who will play a key role in the successful delivery of software across our next generation trading platform. This role differs from traditional Product roles in that it reports into the Technology organization rather t
Company Description - Why does this matter? Because our platform makes trading fixed-income more accessible, ultimately improving transparency, efficiency, and competition in the marketplace. Changing the way an established industry transacts is no easy feat. There will be twists and turns, because no ones ever done this before. But now, more than 2,000 clients around the world rely on our solutions, and that number is only expected to grow in the years ahead. We know where were going. How we get there is up to us. Join us and help Take Us There. The Role - We are looking for a Senior Technical Product Manager (TPM) to join our software engineering team who will play a key role in the successful delivery of software across our next generation trading platform. This role differs from traditional Product roles in that it reports into the Technology organization rather t
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We're creating a health and wellness experience that fits seamlessly into people's lives and we're using modern tech to get there. Whether it's through speed, convenience, or personalisation, we're building smarter, faster, and more engaging experiences for our customers both online and in-store. We're a cloud-first, automation-loving, build-over-buy kind of team. We move fast, collaborate deeply, and always keep our focus on delivering for our customers. About the Role - We're looking for a Senior Software Engineer to join our Loyalty Team within the BX Online vertical. This is a key moment in our journey we're wrapping up a multi-year digital transformation and embarking on the next big phase: designing and building a completely new customer loyalty proposition. You'll work across the full development lifecycle, contributing to roadmap features, shaping product dire
We're creating a health and wellness experience that fits seamlessly into people's lives and we're using modern tech to get there. Whether it's through speed, convenience, or personalisation, we're building smarter, faster, and more engaging experiences for our customers both online and in-store. We're a cloud-first, automation-loving, build-over-buy kind of team. We move fast, collaborate deeply, and always keep our focus on delivering for our customers. About the Role - We're looking for a Senior Software Engineer to join our Loyalty Team within the BX Online vertical. This is a key moment in our journey we're wrapping up a multi-year digital transformation and embarking on the next big phase: designing and building a completely new customer loyalty proposition. You'll work across the full development lifecycle, contributing to roadmap features, shaping product dire
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Use Your Power for Purpose - The vision for Pfizers Digital function is a more integrated and coordinated healthcare model that improves patient outcomes, fuels tomorrows breakthrough therapies, and brings medicines to patients faster.? Within Pfizer Digital, the Customer & Commercial Creation Center (C4) group builds solutions for external customers throughout the product lifecycle?. We support stakeholders to engage external ?customers through digital solutions, whether that is patients, HCPs, payors, pharmacists, or clinical sites. The Customer & Commercial Creation Center (C4) are thought partners and technical solution providers to commercial arms of the business (e.g., Pfizers ?sales force or marketers), working at the intersection of technology and healthcare. We are an enterprise facing team that drives to provide the best DevSecOps, security, standards, and q
Use Your Power for Purpose - The vision for Pfizers Digital function is a more integrated and coordinated healthcare model that improves patient outcomes, fuels tomorrows breakthrough therapies, and brings medicines to patients faster.? Within Pfizer Digital, the Customer & Commercial Creation Center (C4) group builds solutions for external customers throughout the product lifecycle?. We support stakeholders to engage external ?customers through digital solutions, whether that is patients, HCPs, payors, pharmacists, or clinical sites. The Customer & Commercial Creation Center (C4) are thought partners and technical solution providers to commercial arms of the business (e.g., Pfizers ?sales force or marketers), working at the intersection of technology and healthcare. We are an enterprise facing team that drives to provide the best DevSecOps, security, standards, and q
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Meet the Team - You will be a part of an outstanding technical pre-sales team in our Global Security Sales Organization (GSSO), responsible for driving the success of Ciscos Security Portfolio and focusing on protecting Customer Application Environments no matter where they live (on-prem / any cloud). Our mission is simple: democratize security by making it easy and effective for everyone. Were transforming security from the ground up by solving the worlds most pressing geopolitical challenge safe, secure information access. We engineer our business to enable our customers to easily address their ever-evolving security challenges. We believe that impactful work is rewarding work and that our team is at its best when everyone feels empowered to bring their whole self to work. We learn together by hiring for cultural contribution, not cultural fit, and recognize that di
Meet the Team - You will be a part of an outstanding technical pre-sales team in our Global Security Sales Organization (GSSO), responsible for driving the success of Ciscos Security Portfolio and focusing on protecting Customer Application Environments no matter where they live (on-prem / any cloud). Our mission is simple: democratize security by making it easy and effective for everyone. Were transforming security from the ground up by solving the worlds most pressing geopolitical challenge safe, secure information access. We engineer our business to enable our customers to easily address their ever-evolving security challenges. We believe that impactful work is rewarding work and that our team is at its best when everyone feels empowered to bring their whole self to work. We learn together by hiring for cultural contribution, not cultural fit, and recognize that di
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About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 60+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 60+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
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