Senior Full Stack Developer JS - EdTech
Paradox EN is looking for a senior full‑stack developer to lead the next generation of our online learning platform.
Location: Remote worldwide or in our offices in Dubai or Lisbon. French and English fluency is required.
Employment type: Full‑time.
Responsibilities
- Build & Innovate
- Develop new features that enhance the Paradox App and redefine how users learn online.
- Implement AI‑driven functionalities that personalize the learning experience.
- Continuously test, iterate, and push boundaries to improve performance and usability.
- Collaborate with cross‑functional teams to integrate feedback and rapidly iterate on new ideas.
- Scalability & Performance
- Ensure the application can handle large volumes of concurrent users while maintaining speed and reliability.
- Optimize resource usage and infrastructure costs without sacrificing performance.
- Leverage CDN and caching strategies to improve load times globally.
- User‑Centered Design
- Work closely with product and design teams to build intuitive, beautiful,



and efficient user interfaces.
- Rapidly prototype features to test and refine customer experiences.
- Incorporate AI and automation to enhance user interactions.
- Problem Solving & Troubleshooting
- Investigate and resolve technical challenges to ensure a seamless user journey.
- Analyze recurring issues and proactively implement solutions to prevent future problems.
- Work across teams to ensure a stable and efficient system.
- Collaboration & Communication
- Actively participate in tech architecture discussions and planning sessions.
- Provide and seek constructive feedback to continually improve the development process.
- Work within Agile frameworks to ensure timely and high‑quality delivery.

Must Have
- 3-6 years of full‑stack development experience, or experience as a CTO of a startup.
- Deep expertise in TypeScript & React.js (minimum 3 years).
- Proficient in Tailwind CSS.
- Strong AI mindset – actively

📌 Senior Full Stack Developer JS (España)
🏢 Paradox EN
📍 España