Senior Software Engineer (C#/Java) – Remote + 25 PTO

Threecolts is seeking a Senior Software Engineer to own backend services and APIs, primarily across C# and Java‑based systems. You’ll design scalable components, debug production issues, and work with Product, QA, and DevOps to deliver reliable features for Inventory Lab.

You’ll collaborate across a product‑led ecommerce environment, writing clean code, modelling data in SQL databases, and leveraging AWS cloud infrastructure. A strong ownership mindset and excellent communication are essential.

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