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# Senior Software Engineer (Y Combinator Startup)

- **Company:** CoCrafter
- **Location:** München, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Cloud Computing, Software Quality, Code Review, Databases, Continuous Integration, PostgreSQL, Node.Js, Pair Programming, Performance Tuning, Next.js, Systems Architecture, TypeScript, Information Technology, Deployment Automation, NestJS, Docker
- **Published:** November 5, 2026
- **Apply:** https://www.adzuna.de/details/5954173854

## About the Role

* A degree in Computer Science or a related field
 * Experience guiding a product or system through a significant growth phase
 * You are 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

## Description

We are a small, high-performing engineering team that is growing rapidly. As a Senior Software Engineer (m/f/d), you will ensure that our system architecture and engineering processes scale alongside the business - from our early-stage startup setup to enterprise-level requirements.

At the same time, you will remain hands-on: You will actively contribute to feature development wherever needed and lead by example. You will work closely with our CTO and have real ownership and influence over our technical direction.

Responsibilities

 * Evolve our 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