Proficiency with Java or Kotlin and Spring, with the judgment to evaluate, review, and debug code regardless of how it was produced. Proven development and operational experience with high-volume REST and/or gRPC services (either server-to-server or mobile client facing). Experience designing for containerization and orchestration (e.g. Docker, Kubernetes). Experience architecting and operating cloud-native applications with resilience, failover, and self-healing as core features.
Experience delivering and operating services on a managed internal platform, rather than provisioning raw cloud infrastructure. The ability to design robust CI/CD pipelines and define infrastructure as code. Experience with observability strategies and tools (e.g. Prometheus, Grafana, OpenTelemetry, Splunk, Datadog). A working understanding of security, privacy, and cryptography (e.g. encryption, tokenization, key management, PKI, certificate management, JWT).
Experience optimizing SQL/NoSQL databases for scale (e.g. Cassandra, DynamoDB, CockroachDB, Oracle). Domain knowledge of payments, commerce, gift cards, or other financial systems with strict correctness and audit requirements. Passion for people, code, and improving our future