(for a U.S.-based eCommerce technology company modernizing its fulfillment and logistics platforms)
About the Role
We’re seeking a Staff .NET Core Developer (C#) to design, build, and scale the internal systems that power one of the nation’s fastest-growing eCommerce logistics operations. You’ll work on complex, high-impact applications that connect digital tools with real-world fulfillment center technology — optimizing how inventory, orders, and operations flow across the network.
This is a hands-on technical leadership role — ideal for an engineer who combines strong architectural instincts with a builder’s mindset. You’ll shape foundational systems, mentor other developers, and collaborate across product, UX, and data teams to deliver stable, scalable, and future-ready software.
Responsibilities
* Design and develop backend systems and APIs using .NET Core (C#).
* Lead architectural discussions around scalability, performance, and maintainability.
* Partner with product managers, UX, and data engineers to translate operational requirements into technical solutions.
* Contribute to system modernization and codebase evolution, introducing best practices and automation.
* Support AI-assisted development initiatives to accelerate delivery and quality.
* Mentor mid-level developers and help elevate engineering standards across the team.
* Ensure reliability and observability through thoughtful design, testing, and monitoring.
Requirements
* 8+ years of professional experience developing enterprise applications in C# / .NET Core.
* Proven experience designing APIs, microservices, and distributed systems.
* Strong understanding of Azure or other cloud environments.
* Solid grasp of data modeling, performance optimization, and system integration.
* Comfortable navigating complex codebases and improving existing architecture.
* Excellent communication skills and the ability to collaborate with cross-functional teams.
* Self-starter mindset — curious, proactive, and driven to improve systems and team velocity.
Preferred Qualifications
* Experience in logistics, fulfillment, or eCommerce platforms.
* Experience designing distributed or asynchronous backend systems.
* Familiarity with CI/CD pipelines and DevOps practices in Azure.
What You’ll Love
* Working on mission-critical systems that power real-world logistics at scale.
* A culture that values craftsmanship, ownership, and initiative.
* Collaborating with time-zone-aligned teams in a highly technical, fast-moving environment.
* The chance to make architectural decisions that impact thousands of daily operations.