Software Development Engineer, Fees Tech
Core
Design, build, and operate distributed systems and AI-native engineering practices for fee calculation and seller economics, serving 2+ million sellers across 23 countries.
Role type
Senior Software Development Engineer (SDE II)
Builds
Fee Calculation Engine, ML-based item classification, seller-facing AI surfaces, and agentic infrastructure
Domain
E-commerce / Financial Services / AI Engineering
Deliverable
production ML models
Required skills
Distributed systems design, C#/C++/Java/Perl, AI-assisted coding, multi-agent workflows, operational excellence, technical strategy, code review
Preferred skills
Machine Learning fundamentals, Large Language Model architecture, model optimization
Technologies
C#, C++, Java, Perl, SMT, RL
Responsibilities
Design and build distributed systems; deliver features end-to-end from design to production; operate AI-native engineering practices; build and maintain agentic systems; drive operational excellence; collaborate across disciplines; contribute to technical strategy; mentor and support peers
Seniority
Senior, hands-on IC