We’re seeking a hands‑on API Developer to join our API Team in Valencia, Spain, working within the Labs Domain or another internal domain depending on the assignment. Reporting to the Platform Engineering Manager or equivalent, the role follows a hybrid working model aligned with the needs of the team. You’ll turn product goals into robust technical solutions, craft high‑quality .NET APIs, champion API‑first practices, and collaborate closely with Product Owners, Architects, Security, and Platform teams to deliver reliable, scalable services.

Location Parque Tecnológico, Paterna, Valencia, Spain

Your Mission Your mission will be to develop and take ownership of the API surface supporting the domain’s applications, enabling the team to deliver efficiently, safely, and sustainably. You will balance the need for rapid delivery with the long‑term health, scalability, and maintainability of the APIs.

What You’ll Do

Design and evolve the API architecture; define contracts, versioning, security, and observability

Break down features into technical tasks and actionable work

Implement REST and/or gRPC APIs; ensure thorough testing (unit, integration, contract)

Lead or contribute to sprint planning and technical refinement

Maintain DevOps pipelines, CI/CD, monitoring, and operational readiness

Collaborate with Platform, Security, and Enterprise Architecture teams

Mentor peers and raise the technical bar across the team

Identify and mitigate technical risks, dependencies, and debt

Support incident resolution and root cause analysis

What You Bring

Strong hands‑on experience as a .NET API developer

Proven expertise designing, building, and consuming APIs (REST and/or gRPC)

Deep knowledge of API tooling: OpenAPI/Swagger, contract testing,



API gateways, security best practices

Cloud experience with Azure or AWS

Experience with DevOps, CI/CD, automated testing, and observability

Strong collaboration and communication skills; able to work with DPO/EA/security teams

Awareness of security, privacy, and audit considerations in API data

Nice to Have

Experience with interoperability standards or cross‑domain integrations (non‑FHIR)

Regulatory/compliance exposure is a plus but not required

LIMS or enterprise SaaS experience

Containerization and orchestration (Docker, Kubernetes)

Observability tooling and APM solutions

Spanish would be a plus

Background & Experience

Strong background as a senior engineer or API specialist

Experience delivering API‑centric products in agile teams

Proficient with cloud platforms, modern architectures, and DevOps practices

Ability to collaborate with Enterprise Architecture on standards

Why Join Us?

Work on real‑world products where technology has a direct impact on the business, laboratory operations, and ultimately patient outcomes.

Join an IT organization that is investing in modern technologies and giving engineering teams a strategic role in the company’s growth.

Have a clear mandate, ownership, and the opportunity to influence technical decisions and ways of working.

Collaborate closely with Product Owners, Architects, Security, and Platform teams in an international environment.

Be part of a culture that values engineering quality, innovation, collaboration, and sustainable development.

Benefit from a hybrid working model, versátil working hours, and private health insurance.

Vitrolife Group is an equal opportunity employer. We welcome and encourage applications from people with disabilities.

📌 API Developer –.NET (Valencia) (Madrid)
🏢 Vitrolife Group
📍 Madrid