Staff Backend Engineer — Platform & API Leader (Remote) in Katowice

Ajaib Group is seeking a Staff Engineer (Backend) to set the technical direction for the shared platform used by many product teams. You will own the architecture for identity, core services, APIs, observability, and developer tooling, while staying hands-on when it matters most. You'll lead cross-team design reviews, enforce API standards, and build reliable, secure multi-tenant services. Mentor engineers and drive large migrations with clear timelines and tooling support.