Full Stack Engineer - Madrid

Avance Consulting; Madrid; Presencial; EUR 45.000 - 65.000; Jornada completa

Descripción de la vacante

Avance Consulting is seeking a Full Stack Software Engineer to own features end-to-end, delivering high-quality back-end and front-end work in Madrid, Spain. This is an individual contributor role in an Agile environment, focused on solving real engineering problems and shipping reliable software.

You’ll collaborate with Product and Design, write clean, well-tested code, and contribute to architecture decisions, with Go on the backend and React/TypeScript on the frontend.

Formación

• Bachelor’s degree in Computer Science or related field.
• Strong Go/Golang backend experience and React frontend experience.
• Experience with microservices, REST APIs, and SQL databases.
• Proven testing experience with modern JS testing frameworks.

Responsabilidades

• Build and deliver high-quality back-end and front-end features across web platforms.
• Design and develop reliable, scalable, and maintainable services.
• Contribute to technical design, architecture, and implementation decisions.
• Collaborate with Product Managers and Designers to turn ideas into working solutions.
• Write clean, well-tested, and well-documented code.
• Participate in code reviews and raise engineering quality.
• Work in an Agile/Scrum environment with a collaborative team.

Conocimientos

Go/Golang

React

TypeScript

REST APIs

Microservices

gRPC

SQL

Unit testing

API integration

React Hooks

Educación

Bachelor’s degree in Computer Science or related field

Herramientas

pgx

sqlx

GORM

Jest

Vitest

React Testing Library

Cypress

Playwright

Descripción del empleo

We’re looking for a strong Full Stack Software Engineer who enjoys building scalable products, solving real engineering problems, and working closely with Product and Design teams.

This is a hands-on individual contributor role where you’ll have the opportunity to own features end-to-end - from technical design to development, testing, and delivery.

What you’ll be working on

• Build and deliver high-quality back-end and front-end features across web platforms.
• Design and develop reliable, scalable, and maintainable services.
• Contribute to technical design, architecture, and implementation decisions.
• Work closely with Product Managers and Designers to turn ideas into working solutions.
• Write clean, well-tested, and well-documented code.
• Participate actively in code reviews and help raise the engineering quality of the team.
• Work in an Agile/Scrum environment alongside a collaborative engineering team.

Must-have technical skills

Backend - Go/Golang

• Strong professional experience with Go/Golang
• Goroutines, channels and concurrency
• Microservices
• REST APIs
• gRPC and/or net/http
• Strong understanding of backend/system design
• Go database experience with SQL + Go, pgx, sqlx or GORM
• Go testing / unit testing

Frontend - React

• Strong hands-on experience with React
• React + Next.js OR React Native
• TypeScript
• React Hooks
• API integration
• Experience building and supporting production-grade UIs

Testing

Experience with one or more of:

• Jest
• Vitest
• React Testing Library
• Cypress
• Playwright
• E2E Testing

Nice to have

• Experience with distributed systems or high-traffic applications
• Experience working with data-intensive platforms
• Experience integrating third-party video conferencing platforms through APIs/SDKs

What we’re looking for

We’re looking for someone who:

• Takes ownership and can drive work independently.
• Enjoys solving complex technical problems.
• Communicates clearly with engineers, Product, Design, and stakeholders.
• Is comfortable working in a fast-paced Agile environment.
• Cares about code quality, testing, performance, and maintainability.
• Has a Bachelor’s degree (or equivalent) in Computer Science or a related field.

Ideal profile

If you’re a Full Stack Engineer who loves Go on the backend and React on the frontend, we’d love to hear from you.

Know someone who would be a great fit? Please feel free to share this post with them.

Full Stack Engineer - madrid madrid, es