Valencia: Senior .NET API Engineer (Hybrid)

Vitrolife & Igenomix Brasil, part of Vitrolife Group; Paterna; Hybrid; EUR 45,000 - 75,000; Full time

Benefits offered by this job

Hybrid working model

Private health insurance

Job summary

Vitrolife Group is seeking an API Developer to design and implement robust .NET APIs in Valencia, Spain. You will work within the API team, delivering scalable services, aligning with Platform and Security teams, and driving API‑first practices in a hybrid work setting.

The role focuses on API surface development, maintaining quality, and collaborating with Product Owners and Architects to balance rapid delivery with long‑term API health and security.

Qualifications

• Strong hands‑on experience as a .NET API developer.
• Proven expertise in designing, building, and consuming APIs (REST and/or gRPC).
• Deep knowledge of API tooling: OpenAPI/Swagger, contract testing, API gateways, security best practices.

Responsibilities

• 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

Skills

NET API development

API design and consumption (REST/gRPC)

API tooling (OpenAPI/Swagger)

Security best practices for APIs

Cloud platforms (Azure/AWS)

DevOps/CI-CD/observability

Team collaboration and communication

Tools

OpenAPI/Swagger

API gateways

Contract testing

Docker

Kubernetes

CI/CD tooling

Observability tools

Job description

Vitrolife Group is seeking an API Developer to design and implement robust .NET APIs in Valencia, Spain. You will work within the API team, delivering scalable services, aligning with Platform and Security teams, and driving API‑first practices in a hybrid work setting.

The role focuses on API surface development, maintaining quality, and collaborating with Product Owners and Architects to balance rapid delivery with long‑term API health and security.