Senior Full Stack Developer Barcelona
3–6 Month Engagement
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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. xkdbapo 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.

📌 Full Stack Engineer (Barcelona)
🏢 CareerWallet
📍 Barcelona