Senior Software Backend Engineer, Foundations

Xapply; Northern (KY); Hybrid; USD 140,000 - 180,000; Full time

Job summary

Xapply in the United States, Kentucky region, is seeking a senior backend engineer to build foundational platform services that empower product teams. You will own critical components from design through production, focusing on identity, authentication, and access control.

You will mentor peers, review designs, shape architecture, and drive engineering best practices in a collaborative, high-impact environment.

Job description

Description:

This is a senior backend engineering role focused on building foundational platform services that support teams across a growing software organization. You will work on critical capabilities spanning identity, authentication, access control, and other shared platform primitives. The role combines hands-on backend development with technical ownership, giving you responsibility for complex components from design through production. You will serve as a technical point of reference within your area while collaborating closely with product and engineering teams. You will also help shape architecture, identify technical risks, and improve engineering practices through mentorship and design reviews. The environment values simplicity, clear communication, thoughtful technical decisions, and strong ownership. This opportunity is ideal for an experienced backend engineer who enjoys solving complex platform problems and building systems used by other engineers.