The Company Youâll Join At Rebuy, weâre on a mission to revolutionize shopping with intelligent, personalized experiences that wow customers around the globe. As a fully remote team, we power some of the fastest-growing DTC brands like Aviator Nation, Liquid Death, Magic Spoon, Blenders, Laird Superfoods, Primal Kitchen, and many more. We believe in ownership, drive, and empathy, and strongly uphold that every team member plays a vital role in shaping the future of intelligent commerce. Our culture thrives on collaboration, creativity, and genuine passion. We donât just build great tech - we build lasting partnerships, a strong community, and a place where people love to work. The Problems Youâll Solve Rebuy and its team members continually strive to create a high-spirited, intentional work environment that stresses performance, productivity, collaboration, and merit. As a Sr. Software Engineer, Back-End, youâll own some of the most consequential systems at Rebuy. Your primary anchor is our billing and payments infrastructure â the engine that determines how merchants are charged, how partners get paid, and how financial balances flow across our entire product suite. This is genuinely complex financial engineering. It requires deep PHP and Go expertise, careful architecture, and judgment that no automated tool can replicate. Merchant billing runs daily, touches real revenue, and demands someone who understands both the technical and business dimensions of every decision. Alongside billing, youâll grow into a broader platform portfolio â the partner portal, data ETL pipelines, customer-facing APIs, and reporting infrastructure that power the business. And in the near term, youâll play a critical role in a significant technical migration: moving our legacy Code Igniter 2 codebase to Code Igniter 4, including work tied to increasing our enterprise market share. This migration requires hands-on PHP expertise and cannot be deferred. You wonât be hande
