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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Engineer - **Company:** Sustainrecruit Talent - **Location:** Spain - **Contract:** Temporary contract - **Skills:** Agile Methodology, Artificial Intelligence, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Application Performance Management, Cloud Computing, Github, Design of User Interfaces, Python (Programming Language), Scrum Methodology, Next.js, Web Applications, Tailwind, ReactJS, Backend, Git, Fastapi, Amazon Relational Database Service, Pytest, Playwright, Front End Software Development, Functional Programming, Cucumber (Software), Serverless Computing, Docker - **Published:** September 25, 2026 - **Apply:** https://www.buscojobs.com.es/full-stack-engineer-en-espana-ID-373111269 ## About the Role with designers, developers and product managers to deliver new features- Supporting and mentoring more junior developers and providing technical guidanceTech stack:- Next.Js & React- Tailwind CSS- Python & FastAPI- AWS - EC2, S3, Lambda, RDS- Playwright, Cucumber & pytest- Git & Agile/ScrumLooking 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 environmentNice to have:Docker, GitHub Actions, serverless architectures, SonarCloud/Snyk, TurboRepo and Storybook. #J-*****-Ljbffr ## Description Senior Full Stack DeveloperBarcelona3-6 Month EngagementI'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 guidanceTech stack:- Next.Js & React- Tailwind CSS- Python & FastAPI- AWS - EC2, S3, Lambda, RDS- Playwright, Cucumber & pytest- Git & Agile/ScrumLooking 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 environmentNice to have:Docker, GitHub Actions, serverless architectures, SonarCloud/Snyk, TurboRepo and Storybook.#J-*****-Ljbffr ## Related Videos - [pytest: Simple, rapid and fun testing with Python](https://www.wearedevelopers.com/videos/213-pytest-simple-rapid-and-fun-testing-with-python) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Web development best practices in 2021](https://www.wearedevelopers.com/videos/280-web-development-best-practices-in-2021) - [Automagic Configuration in Python](https://www.wearedevelopers.com/videos/363-automagic-configuration-in-python) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025)