Build 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.
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.
Work closely with product and design teams to build intuitive, beautiful, and efficient user interfaces.
Rapidly prototype features to test and refine customer experiences.
Investigate and resolve technical challenges to ensure a seamless user journey.
Analyze recurring issues and proactively implement solutions to prevent future problems.
Actively participate in tech architecture discussions and planning sessions.

3-6 years of experience in Full Stack Development, Lead Development or as CTO of a startup.
Deep expertise in TypeScript & React.js (minimum 3 years experience).
Proficient in Tailwind CSS for sleek and responsive designs.
Strong AI mindset – you actively integrate AI into your workflow.
Passion for writing clean, maintainable, and scalable code.
French and English fluency is required.

Freedom: feeling free to work remotely or hybrid and being trusted to deliver.
Ambition: growing up surrounded by smart colleagues driven to create an iconic brand like Nike.
Impact: contributing to transform people lives at scale and feel your own impact in the company.
Health insurance
350€ per year paid by the company to take care of yourself (for your gym, or dance class or whatever make you feel great)
150€ per year paid by the company to boost your knowledge (books, education): we are passionate about learning and want to support your growth
1:1 coachings: a Paradox coach supporting you personally or professionally to live your best life
Team buildings

Lead Developer – French Fluent

Key skills