Senior / Staff Software Engineer (Python, JavaScript and iOS SDK)

🌍 Location: North & South America (preferred), Poland, Ukraine & Eastern Europe 💼 Employment: Full-time | B2B 📅 Duration: 3+ months, potential extension 💰 Rate: Up to $25/hour 🚀 Seniority: Senior / Staff About the Project We are looking for an experienced Senior / Staff Software Engineer to join a product engineering team building a SaaS platform focused on marketing attribution, conversion tracking, and real-time data processing. The primary focus of this role is to design and build a mobile attribution SDK from scratch, alongside developing real-time conversion APIs, tracking integrations, and scalable data pipelines. This is a hands-on engineering position for someone who enjoys building production-grade products, designing reusable abstractions, and solving complex integration challenges.

What You'll Do Mobile Attribution SDK (Greenfield Project) Design and develop a new mobile attribution SDK from scratch. Build and maintain JavaScript and iOS SDK components. Develop reliable tracking, attribution, and event collection mechanisms.

Design reusable SDK architecture with performance, scalability, and maintainability in mind. Ensure seamless integration with client applications and backend services. Conversion API & Real-Time Tracking Build and maintain real-time conversion tracking integrations using Python.

Process tracking signals and forward conversion events to advertising platforms. Develop integrations with third-party advertising APIs, handling platform-specific requ