API Developer – .NET (Valencia)

Location: Hybrid role based at Parque Tecnológico, Paterna, Valencia, Spain

Company

hirify.global develops medical devices and genetic services that support fertility treatment, personalized genetic information, laboratory operations, and patient outcomes.

What you will do

• Design and evolve API architecture, including contracts, versioning, security, and observability.
• Implement REST and/or gRPC APIs and ensure unit, integration, and contract testing.
• Break down product features into technical tasks and contribute to sprint planning and refinement.
• Maintain DevOps pipelines, CI/CD, monitoring, and operational readiness.
• Collaborate with Product Owners, Platform, Security, and Enterprise Architecture teams.
• Mentor peers, mitigate technical risks and debt, and support incident resolution and root cause analysis.

Requirements

• Strong hands-on experience as a .NET API developer and a strong background as a senior engineer or API specialist.
• Proven experience designing, building, and consuming REST and/or gRPC APIs.
• Deep knowledge of OpenAPI/Swagger, contract testing, API gateways, and API security best practices.
• Cloud experience with Azure or AWS, plus modern architectures and DevOps practices.
• Experience with CI/CD, automated testing, observability, and delivering API-centric products in agile teams.
• Strong collaboration and communication skills, including the ability to work with DPO, Enterprise Architecture, and Security teams.
• Awareness of security, privacy, and audit considerations in API data.

Nice to have

• Experience with interoperability standards or cross-domain integrations, excluding FHIR.
• Regulatory or compliance exposure.
• LIMS or enterprise SaaS experience.
• Docker, Kubernetes, observability tooling, or APM solutions.
• Spanish language skills.

Culture & Benefits

• Hybrid working model with flexible working hours.
• Private health insurance.
• Opportunity to influence technical decisions and ways of working through ownership of API solutions.
• Collaboration with international Product, Architecture, Security, and Platform teams.
• Engineering culture focused on quality, innovation, collaboration, and sustainable development.
• Work on products affecting business operations, laboratory services, and fertility-treatment outcomes.

Hiring process

• The interview process will be conducted in English.
• Applications are reviewed on an ongoing basis.