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 https://jobeax.com/link/Z30sZYC3jcRenVso)
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 https://jobeax.com/link/JSd7UYCSg572jJDY, 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 https://jobeax.com/link/Z30sZYC3jcRenVso 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 package based on experience
Company benefits

Fullstack / Heavy-Backend Developer (NestJS + PostgreSQL)

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