Senior Fullstack Developer (f/m/d)

adjoe builds the technologies behind mobile apps growth and monetization. With our core product Playtime Arcade, we've become the global leader in rewarded advertising, an ad unit built on a simple premise: users earn real in-app rewards for engaging with new apps. The result is one of the most effective value exchanges in adtech, connecting advertisers and publishers with over 770 million users annually.Keeping Platform Stability Front and Center for 770M+ UsersOn the frontier of adjoe's most critical publisher relationships, the Partner Operations team moves fast, cuts through complexity, and contributes towards building trust and value for our partners and publishers. Operating across the full adjoe stack—backend services, SDKs, catalog, and integrations—we unblock strategic launches, build custom integrations, and resolve critical issues in production.We act as the safety net for our product teams and the first line of defense for enterprise publishers. Beyond immediate troubleshooting, we build and scale high-impact diagnostic tooling to automate root-cause resolution across client-side and microservice architectures. Combining cross-stack technical depth with rapid execution, Product Operations ensures seamless performance wherever enterprise growth meets global scale.Your Mission & Who We Are Looking For:5+ years building modern full-stack web and server applications. You have solid, hands-on experience developing end-to-end platform features, with profound practical knowledge of Golang on the backend and TypeScript / React on the frontend.A strong foundation in robust backend architecture. You contribute fresh ideas to our reliability-first Golang microservices (separated across several globally located data programming centers), constantly improving our existing code, API interfaces, and architecture for maximum efficiency.UX-optimized frontend design & seamless API communication. You take a leading role in designing and implementing performant web