Technical Team Lead (Full stack) (m/f/d)

Permanent employee, Full-time · Stuttgart, GER, Düsseldorf, GER

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:
  1. Leadership in Full stack Development: Manage and lead a team of developers working on both front-end (Angular) and back-end systems.
  2. Backend Expertise: Exceptional knowledge in .Net development, with extensive experience in designing and implementing scalable backend systems.
  3. Project Deliveries: Drive end-to-end project development, from planning to execution and delivery, ensuring all deliverables meet business objectives and quality standards.
  4. Hands-on Coding and Problem Solving: Ability to deep dive into complex technical problems and provide solutions on the level of specific product area.
  5. Mentorship: Provide guidance, code reviews, and technical mentorship to the development team, ensuring quality and adherence to best practices.
  6. Collaboration with other Cross-Functional Teams: Work closely with QA, DevOps, Architects, Product Managers, and other product teams to ensure seamless project delivery. 
  7. Communication with Stakeholders: Provide regular updates to senior management on project status, risks, and mitigation strategies.
 
What You Will Practice:
  1. 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.
  2. Maintain High Code Quality: Ensure that the team delivers maintainable, secure, and efficient code through rigorous code reviews and mentorship.
  3. Create Complex Applications: Manage and optimize a robust architecture that integrates seamlessly with various frontend, third-party services and matches target architecture.
  4. Agile Methodologies: Work together with the team to change the processes to support innovations and new challenges.
  5. Code Quality and Security: Oversee and enforce secure coding practices, code reviews.
  6. Continuous Integration & Deployment: Work closely with SRE and DevOps team to ensure robust delivery.
  7. Stakeholder Engagement: Collaborate with business stakeholders to translate requirements into technical solutions, balancing business needs with technical feasibility. 
Your Profile
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:
  • Experience with Angular or other front-end frameworks
  • Helm charts
  • CQRS/CQS
We offer more than just a job
Join the Onventis cloud platform for buyers and suppliers. Our solutions are used by 1.2 million registered users in 21 languages worldwide. We live innovation, support each other, and grow together and we show it with real benefits.

Flexibility & mobility
      · Hybrid working & modern equipment (High class workstation with 2 monitors and licensed software)
      · Job ticket, free parking, company bike

Health & well-being
      · Urban Sports Club subsidy
      · Fresh fruit & drinks

Working environment & culture
      · Supportive team culture with clear structures and growth opportunities
      · IT campus & regular team- & company events
      · 24/7 access to modern office

Development & Prospects
      · Structured onboarding
      · Further education & training
      · Permanent full-time position in a growing SaaS company

Collaboration & Growth
      · Professional growth through close collaboration with a Technical Architect and senior colleagues

Remuneration & Extras
      · Attractive salary
      · Company pension scheme
      · Employee discounts & referral bonuses
      · Sabbatical
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 190 colleagues ensure every day that around 1,2 million users process an annual business volume of 20 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.
Your application
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