Fullstack Developer

Were nowon AG an early-stage Swiss startup in stealth mode backed by Innosuisse and leading music-industry investors. Our mission is to reimagine how live events are organized and reported ensuring copyright compliance and transparency through our in house AI-powered music recognition and B2B products. Were a small but strong interdisciplinary team of live music professionals product owners music AI researchers and engineers working fully remote across the Europe. Together we combine deep R&D with real-world product expertise building systems that will be used directly by artists festivals and other key music industry stakeholders. If youre excited to help shape this future wed love to build alongside you.

Who you are

Were building fast and were looking for a Full-Stack Developer based in Spain whos excited to move between backend and frontend shipping user-facing products while scaling reliable systems. The systems you build wont just live in code; theyll be used by artists event organizers and music industry stakeholders to streamline live performance reporting and unlock new possibilities in the music ecosystem.

• You have hands-on experience building and deploying backend and/or frontend systems for products.
• You enjoy working across the stack from backend services to frontend components.
• Youre curious creative and excited to solve problems in a small ambitious team.
• You care about impact: building products that actually get used.
• Youre comfortable taking ownership but also learning from others.
• You might not check every single box but youre eager to grow into the role.

Tasks

Your responsibilities

• Build and scale backend services with Python (FastAPI).
• Design and manage data models migrations and storage (PostgreSQL Redis).
• Implement and maintain distributed background jobs.
• Develop modern frontend components with React/TypeScript.
• Own features end-to-end: design development deployment and maintenance.
• Integrate third-party APIs into internal systems.
• Contribute directly to product and culture in a flat agile team.

Requirements

Youll be great at this if you

• Have real-world experience shipping scalable backend and frontend systems.
• Are comfortable across the Python backend stack: REST/WebSockets DB design management migrations (PostgreSQL Redis ORMs) distributed jobs.
• Write modern frontend: React (or similar) HTML/CSS TypeScript/JavaScript.
• Are passionate about writing clean and pragmatic code.
• Think in product outcomes not just ticketslove fast feedback loops.
• Work autonomously communicate crisply and raise the bar for the team.
• Are based in Spain.

Bonus points

• Familiarity with distributed task processing systems (eg: Celery Kafka AWS SQS RabbitMQ etc.).
• Cloud Infra and DevOps: AWS Docker Kubernetes Terraform GitHub Actions etc.
• Track record of shipping user-facing products.
• Passion for live music whether as a musician DJ engineer or through hands-on experience with concerts festivals or the live entertainment industry.
• Interest in music audio processing and AI systems.

Note: We dont expect you to tick every single box. If youre excited about our mission and bring most of the skills or the drive to grow into them quickly wed still love to hear from you.

Benefits

• Impact: join early and shape core architecture product and culture.
• Flexibility: fully remote in Spain.
• Growth: clear path to senior/lead roles as we scale.
• Comp & equity: competitive salary stock options.
• Culture: deep-tech builder-mindset high trust low ego.

If building at the intersection of AI music excites you wed love to talk.