Description
Backed by GCO Ventures and Byld, we are building **Maia Care**: a new startup whose mission is to help women comprehensively manage peri- and menopausal symptoms through an evidence-based, personalized digital platform.
We are looking for a person to join as a **Full Stack Developer**, developing and evolving the digital product from its earliest stages alongside the CTO, contributing across the entire development lifecycle.
**Responsibilities**
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* Develop end\-to\-end product features alongside the CTO, from technical design through to production deployment.
* Develop and maintain the **back\-end**: APIs, data models, integrations, and business logic.
* Contribute to the **front\-end** in Next.js when required by the product, ensuring a smooth and consistent user experience.
* Rigorously apply **health data security and privacy** practices, and raise concerns immediately upon identifying any risk.
* Work on AI, agent, and automation integrations as a core part of the product.
* Assist in architectural evolution (cloud environment), code reviews, testing, observability, and technical debt reduction.
* Help define engineering processes, best practices, and standards as the technology team grows.
This role is strongly back\-end oriented, though front\-end contribution is expected when necessary.
**Stack: We use Next.js, TypeScript, Nest.js, Python (Django), Google Cloud, Strapi, and MongoDB.**
**Requirements**
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* 3\+ years of experience developing web products in production environments, with knowledge of the full development lifecycle.
* Demonstrable Full Stack development experience, **with proficiency in: Python (Django or equivalent) and TypeScript.**
+ Experience with Next.js, React.js, JavaScript or Bun; and Nest.js, Node.js, Express or similar frameworks is valued.
* Experience designing APIs and modeling databases (relational and/or NoSQL).
* Daily hands\-on experience with **cloud and CI/CD**: deploying, debugging, and monitoring (GCP preferred).
* Careful judgment and sensitivity regarding **sensitive data**, and comfort operating in a startup environment where not everything is yet defined.
* Experience in agile environments with cross\-functional teams, where security and sound development practices are prioritized.
**Especially valued**
* Prior experience in healthtech, femtech, or products handling health data.
* Experience building products from early stages (0\-1, MVP, or *early stage*).
* Knowledge of regulatory compliance in health and privacy.
* Experience integrating AI into products.
**What we offer**
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* The opportunity to build a product from scratch as part of the founding team, with high ownership and direct impact.
* Support from Venture Builders, combining autonomy and innovation with access to resources, expertise, and the networks of GCO Ventures and Byld.
* A purpose\-driven project focused on solving a real problem with social impact.
* Office located in Barcelona.
* Hybrid model (2 remote workdays per week).
Start date: September \- October 2026