Fullstack Developer

nowon AG; Barcelona; A distancia; EUR 40.000 - 70.000; Jornada completa

Descripción de la vacante

A growing technology startup is seeking a Full-Stack Developer to build user-facing products that enhance live event organization. The role is remote, targeting candidates based in Spain. You will work on scalable backend frameworks with Python and develop modern frontend interfaces with React. Ideal candidates have a solid understanding of both backend and frontend technologies, along with a passion for solving problems in a dynamic environment.

Servicios

Competitive salary plus stock options

Fully remote work in Spain

Growth opportunities to senior roles

Deep-tech, builder-mindset culture

Formación

• Experience shipping scalable backend and frontend systems.
• Comfortable with Python backend stack and modern frontend technologies.
• Ability to work autonomously and communicate effectively.

Responsabilidades

• Build and scale backend services with Python (FastAPI).
• Design and manage data models.
• Develop modern frontend components with React.

Conocimientos

Backend development with Python

Frontend development with React

Database management (PostgreSQL, Redis)

Clean code practices

Good communication skills

Herramientas

Docker

AWS

Kubernetes

Descripción del empleo

We’re 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. We’re a small but strong interdisciplinary team of live music professionals, product owners, music AI researchers, and engineers, working fully remote across 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 you’re excited to help shape this future, we’d love to build alongside you.

Who you are

We’re building fast, and we’re looking for a Full-Stack Developer based in Spain who’s excited to move between backend and frontend, shipping user-facing products while scaling reliable systems. The systems you build won’t just live in code; they’ll 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.
• You’re curious, creative, and excited to solve problems in a small, ambitious team.
• You care about impact : building products that actually get used.
• You’re comfortable taking ownership but also learning from others.
• You might not check every single box, but you’re eager to grow into the role.

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

• 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 tickets—love 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 don’t expect you to tick every single box. If you’re excited about our mission and bring most of the skills or the drive to grow into them quickly, we’d 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, we’d love to talk.