Husnul Nawafil

A B2B analytics & AI platform for renewable-energy asset management, unifying financial, operational, and regulatory
data with a RAG-based document assistant.
• Architected and rebuilt an event-driven regulatory-document ingestion platform using Pub/Sub, Cloud Run,
Terraform, and PostgreSQL, restoring a critical production pipeline after a 2-month outage.
• Built a pipeline observability suite with freshness SLOs, validation checks, and centralized dashboards across
100+ ingestion configurations, reducing detection time for silent failures from weeks to seconds.
• Root-caused and resolved 88 production incidents across multiple services, eliminating false-positive alerts and
improving API latency through PostgreSQL indexing and middleware optimization.
• Scaled the inbound email ingestion platform from a single tenant to all tenants, automating onboarding workflows
and improving reliability with audit logging, alerting, and failure safeguards.
• Hardened multi-tenant database security by implementing Row-Level Security across publicly exposed tables
and removing insecure access policies across client environments.

An Indonesian premium yet affordable gym & fitness platform offering access to 120+ locations, diverse classes and
wellness services.
• Designed and implemented API rate-limiting middleware in Go, reducing OTP costs by 30% and preventing
DDoS attacks.
• Refactored class schedule APIs and added unit tests, decreasing bugs by 80% and improving system reliability.
• Built an auto-assignment system for new leads and resigned sales, reducing SLA response times and enhancing
customer experience.
• Reengineered the PT scheduling booking workflow to fix race conditions that allowed PT membership overbook
ing, preventing further company revenue loss and ensuring data consistency.
• Built an automated email notification system for PT session recaps, increasing transparency and helping prevent
fraudulent PT session reporting.
• Developed a Lead Management System that contributed to gym membership sales growth by 30%.
• Implemented JWT-based authentication middleware, improving API security and reducing potential breaches
by 50%.
• Collaborated with product and marketing teams to launch workout tutorials, driving a 30% rise in active monthly
users.
• Improved system uptime through proactive incident resolution and performance monitoring.