Senior Software Engineer (Platform)

5+ years of professional software engineering experienceTrack record shipping and operating production systems end-to-endStrong production experience with TypeScript (required)Demonstrably effective with modern AI dev tools — you can point to work you shipped faster or better because of themFamiliar with Firebase, Cloud Run, BigQueryStrong testing discipline and domain-driven design — integration vs unit, testability-first thinkingExcellent written English — able to raise issues, align, and disagree in writing Build and operate systems on Firebase, Cloud Run, BigQuery, and our integrations layerOwn meaningful surface area: design, implement, test, deploy, operateUse AI development tools well, and help raise the team's effective ceiling with themReview code, mentor mid-level engineers, raise the barPartner with product to find simpler solutions before buildingWrite clear RFCs and PRs that move decisions forward About PerkUpPerkUp is an employee rewards and recognition platform. We help companies celebrate their people — birthdays, anniversaries, peer recognition, performance milestones, holidays — without HR teams drowning in logistics. We also run a global swag platform that lets companies design, store, and ship branded merchandise to employees and customers anywhere in the world.We're a scrappy startup making a big bet: a small team that uses AI tools well can outship competitors 10x our size.The roleYou'll be a senior IC on a small platform-focused team, owning meaningful systems end-to-end. You'll design and ship features across our platform — rewards delivery, recognition workflows, analytics, the developer infrastructure that keeps us shipping fast, and the many third-party integrations that hold it all together (HRIS, payroll, Slack, Stripe, shipping carriers, swag suppliers, and more). USD base, calibrated to Senior+ level; band shared at first interviewMeaningful equity in a profitable, growing startupFull-time employment in Colombia, Brazil, or ArgentinaFlexible remote; small in-person gatherings periodically Go production experience (we have latency-sensitive services in Go)Prior Senior+ IC at a startup that scaledOpen-source contributions