Senior Software Engineer (m/f/d)

CoCrafter (YC W24) is a fast-growing Munich-based startup building the Operating System for subcontractor management in construction, already serving medium-sized construction companies and trade businesses across Germany.

The engineering team is small, high-performing and growing rapidly. As a Senior Software Engineer (m/f/d), you will ensure that the system architecture and engineering processes scale alongside the business, from an early-stage startup setup to enterprise-level requirements. You will remain hands-on, contribute to feature development wherever needed and lead by example. You will work closely with the CTO and have real ownership and influence over the technical direction.

What You'll Do

• Evolve the system architecture and optimize performance to handle 10x growth in load and meet enterprise requirements.
• Build and improve CI/CD pipelines, automated deployments, and a testing strategy that enables the team to ship quickly and reliably.
• Stay hands-on and develop features wherever the team needs support.
• Define technical standards for observability, security, and code quality.
• Help the team grow through code reviews, pair programming, Architecture Decision Records (ADRs), and mentoring.
• Prepare and document technical decisions, clearly outlining trade-offs and implications.

What We're Looking For

• A degree in Computer Science or a related field.
• Experience guiding a product or system through a significant growth phase.
• A strong Senior Engineer who enjoys building features hands-on and delivering pragmatic solutions.
• Several years of backend engineering experience, ideally with TypeScript/Node.js (our stack: NestJS, PostgreSQL, Next.js, Docker, AWS).
• Strong knowledge of databases, performance optimization, cloud infrastructure, CI/CD, and observability.
• You think in terms of trade-offs and take ownership beyond the scope of your individual tickets.
• Excellent German or English skills. German is a plus.

What We Offer

• Competitive compensation, including equity (ESOP).
• 28 days of paid vacation per year.
• WellPass.
• Team events including bowling, mini golf, offsites, and regular feedback sessions.
• An outstanding network of founders, investors, and mentors.
• A beautiful office in the heart of Munich (Maxvorstadt).