Fullstack / Heavy-Backend Developer (NestJS + PostgreSQL)
? Madrid, Spain
About Street
Street Smash Burgers was born in Lisbon in 2024 with a simple idea: going back to the roots of the burger with quality product and the smash technique. 100% beef, an open kitchen and a casual, authentic atmosphere. Today we're growing across nearly 40 restaurants in 4 countries, and we're looking for people with the drive to learn, energy and rhythm to grow with us.
The role
We're looking for a Fullstack Developer with a strong backend focus to own features end to end, from the data model to the interface. You'll build with solid engineering practices and use AI tools to move faster without cutting corners.
What you'll do
• Design and build scalable backend systems, applying patterns like Repository, Factory, CQRS and Dependency Injection
• Design relational schemas and optimize complex queries in PostgreSQL and PostgREST
• Build modular, strongly typed APIs and services with NestJS
• Build and connect clean, functional interfaces in React (Vite or Next.js)




• Use Claude Code and other AI tools to speed up your work, guiding them with clear patterns and context
• Break down ambiguous problems, research them and ship pragmatic solutions
• Ask questions early and challenge ideas when there's a better way

Who we're looking for
Must-have
• Solid backend experience with Node.js, TypeScript and NestJS
• Strong PostgreSQL and advanced SQL skills (schema design, query optimization)
• Hands-on use of SOLID, design patterns, Clean Architecture and testing
• Experience building interfaces in React
• Autonomy, pragmatism and open communication
• Professional working proficiency in English

Nice-to-have
• Experience with PostgREST
• Experience with Next.js or Vite
• Experience using AI coding tools (e.g. Claude Code) in your daily workflow

What we offer
• A structured, fast-growing company
• Dynamic, results-oriented environment
• Continuous training and real career growth
• Compensation pack

📌 Fullstack / Heavy-Backend Developer (NestJS + PostgreSQL) (Madrid)
🏢 Street Smash Burgers
📍 Madrid