Design and implement a high-performance credit microservice (private REST API) to support the FY2027 Digital Bank launch.
Design API contracts (OpenAPI), versioning, backward compatibility, and align with Digital Bank and group stakeholders.
Productionize models and credit logic: SageMaker endpoints integration, latency budgeting, timeout/retry/circuit-breaker, and fallback design.
Implement credit domain logic with correctness, explainability, idempotency, reproducibility, and audit trails.
Optimize data supply: efficient data loading from object storage, freshness management, caching, and asynchronous/parallel model calls.
Own quality, testing, and instrumentation: unit/contract/load testing, regression processes, structured logging, traceability, and SLI-driven instrumentation.
Lead technically: establish standards, code reviews, and drive development process improvements.
技術スタック
必須スキル
5+ years building and operating web APIs/microservices in Python or similar
Experience with high-traffic, low-latency APIs and performance tuning
API contract design, error taxonomy, timeouts, retries, and fallbacks for external integrations
Strong testing/QA background with automated testing in the development process
AWS cloud development with containers and CI/CD
歓迎スキル（該当する場合）
ML integration/MLOps, calling models on SageMaker and designing for inference latency
Data platforms: S3, Glue, Databricks; inform technical specs and incident analysis
Terraform/IaC for infrastructure changes via PRs
Finance domain exposure (credit/payments), with auditability and advanced security (mTLS, OAuth, JWT)
Leadership経験（Tech Lead/Scrum Master） with architecture and process standardization
キャリア成長観点
Digital Bankローンチを見据えたクレジットAPIの全体責任を通じ、アーキテクチャと品質標準を牽引できる成長機会