5-8 years of software engineering experience. Proven experience designing large-scale, event-driven or distributed systems (ideally in fulfillment, logistics or e-commerce). Experience implementing and managing integrations with a wide range of external logistics and technology partners that power warehouse and transportation operations. Track record of leading engineers through ambiguous, cross-functional projects and delivering production software that moves key business metrics. Fluency in at least one modern programming language (Ruby, Go, and Python preferred). Proven experience with relational databases (e.g., Postgres, MySQL). Built production services on a major cloud platform (AWS, GCP, Azure or similar). Highly skilled with modern observability stacks like Datadog. Practical knowledge of optimization, forecasting, or decision-science techniques. Bias for automated testing, continuous delivery, and observability. Strong communication skills.