Design, develop, optimize, and maintain backend services using C# and .NET Core.
Build and maintain secure, scalable RESTful APIs (ASP.NET Core).
Work with relational databases, ensuring optimized queries and robust data integrity.
Configure and maintain rulesets and governance policies for autonomous AI development agents.
Apply SOLID principles and design clean, maintainable software architectures.
Design, implement, and maintain unit, integration, and performance/load tests.
Conduct code reviews and provide constructive technical feedback.
Work closely with front‑end engineers to design efficient and scalable APIs.
Collaborate with product managers to translate business needs into technical specifications.
Monitor system health using logging, metrics, and tracing; drive performance and reliability improvements.

Minimum 6 years of experience in backend development.
Proven experience building and maintaining scalable backend services.
Strong hands‑on experience with unit, integration, and load testing.
Familiarity with Agile methodologies and DevOps practices.
Experience with AI development tools (GitHub Copilot, Cursor, Claude‑Code), including configuration and rule management.
Experience working in cloud environments such as Azure, AWS, or GCP.
Fluent in English (mandatory).
French language proficiency is a plus.

Hybrid Work: Rotational model, 2 days onsite, three days remote.
Annual Payments: 14 payments per year (12 monthly payments + 1 summer bonus + 1 Christmas bonus in November).
Meal Voucher: €10.20 per working day.
Vacation: 23 vacation days, plus 24th or 31st December off.
Language Training: Access to group classes in Spanish, English, or French.
Private Medical Insurance: Multicare coverage.
Teambuilding: Join us for memorable afterworks and team activities!

Senior .NET Backend Engineer

Key skills