Lead .Net Developer

Purchasing 4.0 : Fully Digitized & Networked?

At Onventis we don’t hand out solutions we focus on understanding what truly matters to our customers. Our teams are immersed in the challenge, experiencing it firsthand to craft products that genuinely make a difference.

The greatest joy for us is being part of the entire journey from discovering the core of a problem to delivering solutions that our users love and rely on every day .

It’s not just about getting the job done; it’s about creating something meaningful.

As part of an empowered, purpose-driven team, you’ll have the autonomy to shape your own path, collaborate closely with the business, and make decisions that drive real impact.

You’ll be encouraged to push back when necessary and always aim for the best outcome.

We believe work should be enjoyable, and we’re confident you’ll feel the same way. Every day brings new challenges and rewards, and we think you’ll find it fun to be part of a team that’s driven by passion and purpose.

Your job

What Competencies We Are Searching For :

Leadership in Backend Development : Manage and lead a team of developers working on both front-end (Angular) and back-end (.Net) systems.

Backend Expertise : Exceptional knowledge in .Net development, with extensive experience in designing and implementing scalable backend systems.

Hands-on Coding and Problem Solving : Ability to deep dive into complex problems and provide solutions.

Mentorship : Provide guidance, code reviews, and technical mentorship to the development team, ensuring quality and adherence to best practices.

Collaboration with other Cross-Functional Teams : Work closely with QA, DevOps, and product teams to ensure seamless project delivery.

What You Will Practice :

Technical Leadership : Guide the team in architecture decisions, technology stack choices, and best practices for both front-end and back-end development.

Set technical goals for the team and manage by objectives.

Maintain High Code Quality : Ensure that the team delivers maintainable, secure, and efficient code through rigorous code reviews and mentorship.

Create Complex Applications : Manage and optimize a robust architecture that integrates seamlessly with various frontend, third-party services and matches target architecture.

Agile Methodologies : Work together with the team and Scrum Master to change the processes to support innovations and new challenges.

Code Quality and Security : Oversee and enforce secure coding practices, code reviews, and integration with tools like SonarQube and OWASP ZAP.

Continuous Integration & Deployment : Work closely with SRE and DevOps team to ensure that CI / CD pipelines are robust, scalable, and support rapid deployment.

Stakeholder Engagement : Collaborate with business stakeholders to translate requirements into technical solutions, balancing business needs with technical feasibility.

Your Profile

Technical Competencies Required :

Backend (Primary Focus) :

6+ years of experience in C# development (.NET Core & .NET Framework);

Expertise in designing RESTful APIs and microservices architecture, DDD.

Strong knowledge of database technologies (MS SQL, Redis, MongoDB;).

Deep understanding of asynchronous programming and performance optimization.

Experience with cloud platforms (Azure preferred) and scalable system design.

DevOps & CI / CD :

Experience with CI / CD tools like Azure DevOps, GIT, Jenkins, or similar.

Docker, k8s;

Security :

Familiarity with OWASP standards and web security practices.

Nice to have competences :

• Elastic & Kibana;
• Prometheus & Grafana;
• Helm charts;
• CQRS / CQS; Event Sourcing;

We offer you

Become part of the Onventis cloud platform for buyers and suppliers. Our solutions are used by 450,000 registered users in 17 languages worldwide.

A dynamic environment with flat hierarchies, fast decision-making processes and innovative development projects with creative freedom are included!

In addition, we offer you :

• Time to think and collaborate with your team to create the best features.
• Work alongside platform teams who care and drive success.
• Focus on your job with a high-class workstation, dual monitors, and licensed software.
• Experience our CORE culture in action : Customer-oriented, Open-minded, Responsible, Excellent.
• Biannual feedback sessions on your expectations and performance.
• Annual salary reviews to ensure your growth is rewarded.
• Regular informal 1-1 meetings with your manager to stay connected.
• Professional growth through collaboration with technical architects and senior colleagues.
• Access to workshops, conferences, and an e-learning platform for continuous learning

Join Us!

It’s time to meet you!

Apply online or send your application with your salary expectations and the earliest possible starting date to the following e-mail address : [email protected]

About us

We work every day to make global procurement simple, secure and connected with cloud services". At Onventis, we are driven by a common goal : to provide the best digital network for buyers and suppliers.

We are a software pioneer that makes online procurement possible for companies. In addition to digital technology, this requires great ideas for the procurement management of tomorrow.

Who makes them a reality? The Onventis team from Research & Development, IT, Product Management, Consulting & Services, Support, Sales, Marketing and Finance & Administration makes purchasing fit for the future for our internationally active customers, such as Conrad, Federal Mogule, Kühne & Nagel, Schott and Steigenberger - every day.

Expressed in figures : From 6 locations - Stuttgart, Düsseldorf, The Hague, Stockholm, Paris and Vienna - around 160 colleagues ensure every day that around 450,000 users process an annual business volume of 10 billion euros and more via the Onventis platform.

The flat hierarchies, the broad scope for creativity and our interlinked teams create the space for innovation and personal development.

Show us that you are a digital talent and make the Onventis success story yours.