OpenBorder is seeking a Senior Software Engineer to lead key projects and shape systems supporting 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. Working with technologies like Java, MongoDB, PostgreSQL, TypeScript, Next.js, Nest.js, AWS, and GCP, you'll be responsible for building scalable solutions. This fully remote position offers comprehensive benefits including healthcare, 401k, equity, and work-life balance. The ideal candidate should have strong experience in both backend and frontend development, with a focus on clean code and documentation.