Senior Python Engineer

We are looking for a **Senior Python Engineer** with strong backend expertise and solid experience in API integrations to join our team. This role will focus on building and maintaining integrations with Shopify Fulfillment Services, designing robust event\-driven systems, and ensuring high reliability across distributed components. If you are passionate about scalable architectures, clean code, and solving complex integration challenges, this opportunity is for you. 🔧 Key Responsibilities * Build internal system adapters and perform complex data mapping * Implement webhook processing and event\-driven workflows * Design robust error handling, retry strategies, and idempotent processes * Write comprehensive unit and integration tests * Collaborate with the team on API design, architecture decisions, and technical improvements * Debug and troubleshoot production issues with a proactive mindset ✅ Required Qualifications * 8\+ years of professional experience with **Python development** * Strong experience building and consuming REST APIs * Solid knowledge of webhook architecture and event handling * Experience with OAuth authentication flows * Familiarity with e\-commerce platforms (Shopify experience is highly preferred) * Experience with asynchronous processing and message queues * Strong debugging and problem\-solving skills * Fluent English communication skills 🚀 Nice to Have * Experience working with high\-volume transactional systems * Background in distributed systems architecture * Experience with cloud environments (AWS, GCP, or Azure) 🌍 What We Offer * Opportunity to work on scalable e\-commerce integrations * Collaborative and technically strong team environment * Ownership over architecture and engineering decisions * International environment with English communication *Avenue Code reinforces its commitment to privacy and to all the principles guaranteed by the most accurate global data protection laws, such as GDPR, LGPD, CCPA and CPRA. The Candidate data shared with Avenue Code will be kept confidential and will not be transmitted to disinterested third parties, nor will it be used for purposes other than the application for open positions. As a Consultancy company, Avenue Code may share your information with its clients and other Companies from the CompassUol Group to which Avenue Code’s consultants are allocated to perform its services.*