Lead .NET Engineer: Architect Scalable Backend

Twipe; Vlaams-Brabant; On-site; EUR 90,000 - 120,000; Full time

Job summary

Twipe, a mediatech scale-up based in Leuven, Belgium, is scaling its backend platform. As a Lead .NET Engineer, you will take technical ownership of our .NET backend, shaping its architecture and engineering standards while remaining hands-on in the code.

You will lead technical decisions, mentor the team, ensure code quality and maintainability, and drive integrations with external systems such as authentication, APIs, and content distribution.

Qualifications

• 5+ years of backend engineering experience with .NET/C#.
• Master’s degree in Computer Science or equivalent experience.
• Experience owning backend systems and driving architecture decisions.
• Mentoring engineers and leading code reviews.
• Experience building large, scalable, high-availability systems.
• Strong experience with relational databases and cloud platforms.
• Familiarity with infrastructure as code, CI/CD, and modern DevOps practices.
• Strong understanding of software architecture, design patterns, secure coding practices (OWASP), automated testing, and maintainable software design.

Responsibilities

• Take technical ownership of our .NET backend, including architecture, system design, performance, scalability, and reliability.
• Stay hands-on in the code, contributing to complex features and solving challenging technical problems.
• Lead technical decisions and establish engineering best practices across the backend.
• Collaborate with Product, Customer Success, and fellow engineers to design, build, test, and deploy high-quality solutions.
• Coach and mentor backend engineers through technical guidance, code reviews, and knowledge sharing.
• Ensure our codebase remains clean, maintainable, well-tested, and well-documented.
• Drive integrations with external systems, including authentication, authorization, APIs, and content distribution.

Skills

.NET/C#

Backend engineering

Mentoring

Code reviews

CI/CD

Cloud platforms

Relational databases

Security best practices

Automated testing

Backend architecture

Team leadership

Education

Master’s degree in Computer Science

Tools

CI/CD pipelines

Relational databases

Cloud platforms

Job description

Twipe, a mediatech scale-up based in Leuven, Belgium, is scaling its backend platform. As a Lead .NET Engineer, you will take technical ownership of our .NET backend, shaping its architecture and engineering standards while remaining hands-on in the code.

You will lead technical decisions, mentor the team, ensure code quality and maintainability, and drive integrations with external systems such as authentication, APIs, and content distribution.