Fullstack .Net Developer (+bonus) in Germany, Aachen

We see the semiconductor industry as a realm of possibility. We invite you to join us in driving change with our fundamentally human-centered approach, uniting bright minds around a shared vision. The semiconductor industry's growing demand for more powerful chips with higher bandwidth and lower power finds its solution in our technology. In short, we connect chips to create powerful and energy-efficient networks, overcoming connectivity limitations in the semiconductor industry. Black Net is our internal digital platform — the operational backbone that keeps the company running as we scale. It handles everything from time tracking and absence management to project reimbursements, procurement, and more. It is not a side project: it is how our employees get things done every day. Black Net is greenfield in the truest sense. We are looking for a Full Stack Developer with a genuine passion for AI-augmented development .

Design and implement full-stack features across our internal network (Angular, https://jobeax.com/link/8MHzF9oNGdGmx126 closely with the Product Owner to translate requirements and user stories into working software
Contribute to architecture decisions as Black Net expands its feature surface (ERP integration, procurement workflows, and beyond)
Integrate AI coding agents and automation into Black Net's processes
Occasionally run knowledge-sharing sessions so that all team members can benefit from AI coding tools

At least 3 years of hands-on experience in full stack web development
Proficiency in TypeScript and experience with a modern frontend framework — Angular is our stack, but strong React or Vue candidates will be considered
Hands-on experience with a document or relational database (we use MongoDB)
A self-starter mindset: comfortable working in a small team where there is no large support structure, and where you will often define the way things get done

Background in B2B environments, building enterprise applications, internal tooling or integrating systems like ERP or HR (e.g. SAP, Personio, Workday)
Experience with LLM APIs (Anthropic, OpenAI, etc.), You will have real influence over how AI-augmented development takes root at Black Semiconductor — and the results will be visible across the entire company.
At the same time, you are joining a company at one of the most exciting points in its journey: construction of FabONE has started, pilot production is planned for 2026, and the team is scaling fast.

At Black Semiconductor, flexibility is key—we ensure work adapts to life, not the other way around. We invest in your journey for professional and personal development.
We offer a comprehensive benefits package with outstanding insurance, pension and virtual stock options for your mental, physical, and financial health. We encourage qualified individuals from any background to apply. We foster an inclusive and supportive work environment that values collaboration, innovation, and growth. If your application results in an employment relationship, your Applicant Data will be transferred to our personnel records and processed in accordance with applicable legal requirements; otherwise, your Applicant Data will be retained for up to six (6) months after completion of the recruitment process.