Staff Backend Developer (Kotlin/Java)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Staff Backend Developer (Kotlin/Java) based in Brazil. Join a high-impact engineering team working on a major financial-services technology initiative where technical excellence and reliability are critical. In this role, you will serve as a senior technical reference, influencing architecture, development standards, and engineering practices across the product lifecycle. You will combine hands-on backend development with technical leadership, mentoring developers and guiding the resolution of complex engineering challenges. Your work will focus on scalable microservices, domain-driven design, clean architecture, and highly maintainable Kotlin and Java applications. You will also champion quality, observability, performance, and reliability across development and production environments. The position offers an opportunity to shape technical decisions while collaborating closely with experienced engineers in an agile environment. If you enjoy solving complex problems, raising engineering standards, and helping teams build robust software at scale, this role offers significant technical impact.