This SDE II role at Fee Tech involves end-to-end ownership of systems relied upon by over 2 million sellers. The position focuses on designing, building, and operating distributed systems that process a vast number of transactions across multiple countries. Engineers will work with advanced technologies such as AI agents and formal verification to enhance fee policy management. Collaboration with various disciplines is essential to drive operational excellence and contribute to technical strategy.

• 3+ years of non-internship professional software development experience
• 1+ years of designing and developing large-scale, multi-tiered, multi-threaded, embedded or distributed software applications
• Bachelor's degree or foreign equivalent in Computer Science, Engineering, Mathematics, or a related field
• Experience programming with at least one software programming language
• Master's degree in computer science or equivalent is preferred
• Experience with Machine Learning and Large Language Model fundamentals

• Design and build distributed systems.
• Deliver features end-to-end, owning requirements scoping, technical design, implementation, code review, testing, launch, and operational monitoring.
• Operate AI-native engineering practices using AI-assisted coding and agentic code review tools.
• Build and maintain agentic systems with a focus on correctness, latency, and self-improvement loops.
• Drive operational excellence by participating in on-call rotation and resolving incidents.
• Collaborate with product managers, UX designers, data scientists, and business stakeholders.
• Contribute to technical strategy by writing design documents and participating in architectural discussions.
• Mentor and support peers through code reviews and constructive feedback.

• Employees at Amazon are often offered comprehensive health benefits—including multiple medical plan options (no pre-existing condition exclusions, 100% covered in-network preventive care), dental and vision plans, a 24/7 medical advice line from day one, expert second-opinion services, and broad mental-health support with several free counseling sessions (including pediatric). Financial wellness typically includes a 401(k) with company match (up to 2%), Restricted Stock Units (equity), FSAs, an emergency savings program, product and partner discounts, and even college-savings and home-purchase programs. Overall, the package is designed to support employees and their families’ health, finances, and day-to-day life.