Node.js / Python Developer

About the Role

We are looking for an experienced Node.js / Python Developer to join us long-term and take ownership of a production WhatsApp automation platform used by real customers.

You will work on two interconnected systems:

• A multi-account WhatsApp messaging platform with scheduling, personalization, real-time monitoring, and campaign management.
• A device automation platform that manages Android emulators, account lifecycle, automation flows, and integrations.

This is a long-term role focused on product development, system reliability, and building new features.

Responsibilities

• Develop and maintain production Node.js and Python applications.
• Implement new features based on business requirements.
• Improve system stability, performance, and scalability.
• Optimize APIs, databases, and real-time communication.
• Extend automation workflows and plugin functionality.
• Maintain and improve the frontend where needed.
• Work with an existing codebase and contribute to its long-term evolution.

Requirements

• Strong commercial experience with Node.js.
• Strong commercial experience with Python.
• Experience with Express.js and FastAPI.
• Solid understanding of REST APIs and WebSockets.
• Experience with asynchronous programming and concurrent systems.
• Good knowledge of SQLite or similar relational databases.
• Strong JavaScript fundamentals (Vanilla JS).
• Basic PHP knowledge for maintaining existing functionality.
• Ability to work independently on production systems.

Nice to Have

• Experience with WhatsApp automation (Baileys or similar).
• Android / ADB knowledge.
• Experience with PyQt or desktop applications.
• Experience designing plugin or extension architectures.
• Knowledge of rate limiting, anti-detection, or automation systems.

We Offer

• Long-term collaboration.
• Existing production product with active users.
• Full onboarding and documentation.
• Opportunity to take ownership of a technically challenging platform.
• Flexible remote work.