Designs, builds and operates network infrastructure across service platforms and office environments, including cloud and data-center networks, incident response, performance analysis and operational automation.
About this role
DeNA is hiring an engineer to lead technology for kencom, its healthcare entertainment app used through health insurance societies and local governments by more than eight million people. The engineer joins SAT-alpha, a self-contained team of a product owner, several engineers and one or two designers that builds kencom features for contracted customers and the MiRAI admin tool those customers use.
The role goes beyond implementation: the engineer takes part upstream in improvement proposals and requirements, makes design and architecture decisions in a complex, large system, secures stability and reliability through incident response and refactoring, explains the value of technical decisions to product owners and insurer or municipality staff, and lifts the technical level of the whole team. The stack covers Go, Ruby on Rails, Next.js, Swift and Kotlin on GCP and AWS, and the team uses AI coding tools such as Claude Code, Cursor and Devin daily.
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