Sr software engineer that has build software solutions end to end for companies in the US and Europe

Senior Software Engineer: Backend & Systems Architecture We’re looking for senior software engineers with deep experience in backend engineering and systems architecture who have personally built and owned applications end-to-end—from initial idea and architecture through production deployment and scale. You should have extensive experience building production software for U.S.-based enterprises or technology companies, including making core architectural decisions, designing backend systems, and taking responsibility for the application through launch and operation. This is a hard requirement: You must have personally owned the end-to-end development of significant production applications. If you have only contributed to portions of a system or have not owned the architecture and build from idea to production, please do not apply.