Eri Wiana

I've built production REST APIs and distributed processing systems for Gramedia, ABNK, 1 PLAY, Adgo, and Digitalind. At Gramedia, I cut nightly stock synchronization across 120 stores from 1–2 hours to under five minutes and improved product detail page performance by 50%.

At ABNK, I own backend architecture and delivery for a B2B fintech platform as the sole backend engineer. I raised test coverage from 80% to 90%, standardized conventions across 21 legacy module applications, and introduced an AI-augmented workflow using Claude Code and MCP.

I've delivered FastAPI integrations, Django REST Framework services, Celery and RabbitMQ task processing, PostgreSQL performance improvements, and containerized deployments. I also built Gramedia's PPOB bill-payment system end to end and integrated Stripe checkout and webhooks at Adgo.

Alongside full-time work, I led seven engineers at Digitalind to deliver five core modules for an export–import e-commerce platform and improved security ratings across three API endpoints.