Fullstack Developer (Part-time)

Overview

Versatile Fullstack Backend Engineer focused on building innovative blockchain and AI products.

Ideal candidate should have strong proficiency in JavaScript/TypeScript and experience with LLMs in production.

Locations

• France, Île-de-France

Requirements

• Proficiency in JavaScript/TypeScript
• Backend experience with Node.js + Express
• Experience integrating Slack API and Twilio/WhatsApp Business API
• Proven ability to work with LLMs in production environments
• Understanding of prompt engineering and vector memory
• Experience with AI pair programming tools
• Comfortable embedding dashboards using tools like Streamlit
• Experience working with PostgreSQL or similar databases

Responsibilities

• Rapidly prototype user-facing features
• Build custom integrations with Slack and WhatsApp
• Integrate LLMs into user workflows
• Develop dashboards and internal tools
• Create blockchain forensic tools
• Manage authentication and analytics
• Ship clean, maintainable code

Benefits

• Flexible remote role
• Competitive compensation
• Work with a data scientist founder
• Opportunity to shape AI + blockchain products
• Exposure to leading tools
• Fast, transparent company culture
• Potential for long-term responsibilities