OpenBorder is seeking a Senior Software Engineer to lead key projects and shape the systems that support global shipping, tax compliance, and merchant services. In this role, you'll take ownership of end-to-end feature delivery, mentor other engineers, and influence technical direction across the stack. You'll work with a modern tech stack including Java, MongoDB, PostgreSQL, TypeScript, Next.js, Nest.js, AWS, and GCP. The position offers a fully remote work environment with comprehensive benefits including healthcare, retirement plans, and equity. This is an excellent opportunity for a seasoned engineer who values clean code, documentation, and cross-functional collaboration. The role requires strong experience in both backend and frontend development, with a focus on building scalable systems and delivering production-ready features.