Description:
As a Senior Full-Stack Developer, you’ll play a key role in shaping the future of Business Partner Transparency (BPT) within our osapiens HUB. This enterprise-grade platform helps companies comply with critical ESG regulations like:
- The German Supply Chain Due Diligence Act (LkSG) - ensuring suppliers uphold human rights and environmental standards.
- The Whistleblower Directive - providing secure, anonymous reporting channels.
- The Corporate Sustainability Due Diligence Directive (CSDDD) - upcoming EU-wide sustainability compliance.

This role is based in Madrid, where you'll collaborate with a talented, forward-thinking team. We embrace a hybrid work model, with three days a week in the office, ensuring the perfect balance between in-person collaboration and remote flexibility.

Your Responsibilities:
- Design, build, and optimize full-stack features using modern back-end technologies, ensuring scalability and maintainability. Front End experience is good to have.




- Develop and enhance innovative software solutions that automate complex compliance workflows for businesses of all sizes.
- Collaborate closely with product managers, designers, and engineers in small, agile squads (5-7 people) to define, refine, and implement features.
- Ensure high-quality, secure, and efficient code through rigorous reviews, automated testing, and continuous integration/deployment (CI/CD) practices.
- Own the architecture and design of JavaScript-based solutions, optimizing for performance, reliability, and user experience.
- Contribute to technical strategy and decision-making, identifying opportunities for innovation and process improvements.
- Mentor and support junior developers, fostering a culture of learning and technical excellence within the team.

Your Experience:
- Strong experience (6+ yrs) in full-stack development with a focus on Backend (Node.JS and TypeScript) React.JS is desirable
- Expertise in web services development and integration (REST, GraphQL

📌 Senior Full Stack Engineer (Madrid)
🏢 osapiens
📍 Madrid