Senior Full Stack Developer Barcelona 3–6 Month Engagement I’m currently working with a

high-growth AI-focused technology team

looking for a

Senior Full Stack Developer

to join them on an initial

3–6 month engagement .

This is a great opportunity for someone who wants to get involved in a technically interesting environment, working across modern frontend, backend, and cloud technologies.

What you’ll be doing:

Building and maintaining web applications using

Next.js and React

Developing responsive and intuitive interfaces with

Tailwind CSS

Working closely with backend engineers to design, integrate and test

FastAPI

services

Developing backend components in

Python , with a strong focus on quality and testing

Deploying and managing applications across

AWS

Improving application

performance, scalability and security

Troubleshooting and optimising existing applications

Working within a

Scrum/Agile environment ,



contributing to sprint planning, stand‑ups and retrospectives

Collaborating with designers, developers and product managers to deliver new features

Supporting and mentoring more junior developers and providing technical guidance

Tech stack:

Next.js & React

Tailwind CSS

Python & FastAPI

AWS

– EC2, S3, Lambda, RDS

Playwright, Cucumber & pytest

Git & Agile/Scrum

Looking for:

4–5+ years

of experience with React / Next.js and full-stack development

Strong Tailwind CSS experience

Solid Python backend experience

Hands‑on AWS experience

Strong testing and engineering practices

Comfortable working in an Agile environment

Nice to have: Docker, GitHub Actions, serverless architectures, SonarCloud/Snyk, TurboRepo and Storybook.

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📌 Full Stack Engineer (Madrid)
🏢 SustainRecruit Talent
📍 Madrid