API Developer – .NET (Valencia)

Vitrolife Group; Paterna; Hybrid; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Private health insurance

Hybrid working model

Job summary

Vitrolife Group is seeking an hands‑on API Developer to join our Valencia API Team, delivering robust .NET APIs in a hybrid setup. You will design, build, and maintain API surfaces, emphasizing security, observability, and scalable architectures across domains.

You will collaborate with Product Owners, Architects, Security and Platform teams to ensure reliable services and timely delivery, while mentoring peers and driving best practices in API development.

Qualifications

• Hands-on experience as a .NET API developer.
• Experience designing, building, and consuming REST and/or gRPC APIs.
• Knowledge of OpenAPI/Swagger, contract testing, API gateways, and security best practices.
• Cloud experience with Azure or AWS.
• DevOps, CI/CD, automated testing, and observability know-how.
• Strong collaboration with security, privacy, and EA teams.

Responsibilities

• Design and evolve API architecture with contracts, versioning, security and observability.
• Break down features into technical tasks and actionable work items.
• Implement REST and/or gRPC APIs with 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.

Skills

.NET API development

REST & gRPC APIs

OpenAPI/Swagger & contract testing

Cloud: Azure or AWS

DevOps & CI/CD

Security, privacy & audit in API data

Cross-team collaboration & comms

Tools

API gateways

Job description

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, flexible working hours, and private health insurance.

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