Tech Lead .Net Developer

International engineering and technology consulting firm, Fortil operates with an independent model and brings together more than 2,500 employees. With offices in 30 locations across 14 countries, Fortil supports entrepreneurial freedom and the development of individual potential.

JOB DESCRIPTION

We are looking for a Tech Lead .Net. for one of our clients in Luxembourg, you will lead application projects technically and guide a small team of .Net engineers.

RESPONSIBILITIES

• Design, develop, and maintain backend solutions based on the .Net ecosystem (C#, .Net Core / .Net).
• Define the application architecture, propose suitable patterns (DDD, Clean Architecture, CQRS, etc.), and ensure adherence to best practices.
• Technically lead and coach a development team: code reviews, skills development, and follow-up on deliverables.
• Work closely with Product Owners, QA, and DevOps teams to ensure the quality, maintainability, and reliability of releases.
• Participate in defining technical specifications and assessing estimates, risks, and technical dependencies.
• Set up and improve continuous integration and continuous delivery processes, as well as automation pipelines (CI/CD).
• Ensure performance, security, and scalability of services (monitoring, tracing, performance optimization).
• Contribute to the selection of technologies, libraries, and tools, and lead industrialization and automation initiatives.
• Participate in technical reviews and arbitrate implementation choices in line with the product and technical strategy.

YOUR PROFILE

• 5+ years of experience in backend development, including at least 2 years in a technical lead or architect role.
• Expertise in C# and the .Net ecosystem (.Net Core / .Net 6+), with knowledge of web frameworks (ASP.NET Core).
• Experience with relational databases (SQL Server, PostgreSQL) and NoSQL, as well as query optimization.
• Strong knowledge of automated testing practices (unit, integration) and experience with code reviews.
• Knowledge of DevOps principles and experience with CI/CD tools (Azure DevOps, GitHub Actions, GitLab CI, etc.).
• Ability to design robust, scalable architectures, strong analytical skills, and experience solving complex problems.
• Excellent communication skills, teamwork mindset, and experience collaborating with international or cross-functional teams.

Nice to have

• Experience with microservice architectures, Kafka or RabbitMQ, gRPC or RESTful APIs.
• Knowledge of cloud environments (Azure, AWS) and managed services (App Services, Functions, AKS, etc.).
• Experience in application security and implementing authentication/authorization policies (OAuth2, OpenID Connect).
• Interest in observability (Prometheus, Grafana, ELK) and resilience in distributed systems.

LANGUAGES

• Fluent English and French required.

WHY JOIN US

At Fortil, we set up concrete initiatives to support your growth and ensure an engaging work environment:

• Ongoing support for skills development.
• An ecosystem that encourages taking initiative and stepping out of your comfort zone.
• The opportunity to become a company partner.
• Commitment to social and community projects.
• A dedicated parental support policy.

Fortil is committed to equal opportunities. All of our job offers are open to people with disabilities, without any distinction of gender, origin, or sexual orientation.