Software Engineer (f/m/d)

Most engineering jobs are about optimizing a button or maintaining a legacy system. This is not one of them. At Wunderflats, our vision of "living and working anywhere" hinges on one thing: trust. Your mission as Software Engineer (f/m/d) will be to build and scale the engine of that trust — our core payments and pricing platform. You will own mission-critical financial systems from the database to the API to the user interface. If you're looking for leverage and direct impact on the business, this is it.

Does this sound like the right next step in your career? We would like to hear from you!

YOUR (FIRST) MISSION

-> The Contract Engine

• If you fall in love with a single project (like the Contract Engine) and get upset when the mission shifts, do not apply.
• We need you to fall in love with our company, our agility, and the vision of taking over Europe.
• You will experience ambiguity. You will need resilience. Lean-Agile thinking isn’t a buzzword here; it’s a survival mechanism.
  
  

YOUR PROFILE

• You're a Systems Thinker: You don't just write code; you model systems. You think about race conditions, data consistency, and edge cases before they become production incidents.
• You Have a High "Say-Do" Ratio: You are accountable. You commit and you deliver. You communicate blockers with clarity and focus on outcomes, not activity.
• You're Product-Obsessed: You understand the "why" behind the "what." You push back on requirements that don't make sense and collaborate to find the simplest solution that solves the user's problem.
• You Thrive on Ownership: You want to own a problem, not just a ticket. You're comfortable taking a feature from an idea on a whiteboard to a deployed, monitored service.
• Core Strength: Significant professional experience building and shipping applications using Node.js and TypeScript. You know how to build robust, scalable backend services.
• Frontend Capability: You are proficient with modern React (with JS/TS) and have experience building and maintaining user-facing applications. Experience with Next.js is a strong plus.

Nice to have:

Experience here is a bonus, but your ability to engineer solutions is what matters.

• Platform: GCP, Kubernetes, Terraform, GitHub Actions
• Data: MongoDB Atlas
• API: GraphQL (Apollo/Nexus), some REST

While this is a full-stack role, the core challenge is on the backend. You are the engineer who is comfortable building a UI but is truly passionate about the reliability and architecture of the underlying financial systems.

OUR PITCH

• #empathyculture: Become part of our international team with a scale-up atmosphere, where you as a person really count and your ideas and work make a real impact.
• #radicalimpact: You will own a critical business domain. The code you write will move millions of euros and be the foundation of our platform's trust.
• #worklifeinbalance: Our working hours are flexible and family-friendly. Your main working hours are spent in the office, but you are also welcome to work from home from time to time.
• #personaldevelopment: We support you in your personal & professional development, e.g. through individual training programs, workshops, or participation in trade fairs and conferences.
• #compensationpackage: Receive an attractive compensation package and a company pension plan with a 20% employer contribution.
• #wunderoffice: Work from our brand new office in Berlin (Hackescher Markt), with ergonomically equipped workstations, detox room, playroom, roof terrace and fruit & drinks on us.
• #welovetohavefun: Celebrate with us at our annual summer or winter party, and regular after-work gatherings, and power up in our office with yoga, table soccer and table tennis.
• #morebenefits: A special discounted membership at Urban Sports Club? Decent discounts at FutureBens? Yearly travel ticket? - here you go! - and even more!