Henry Varona

Scaled and led the backend team from setup to 8 developers by introducing code review standards, design sessions, and engineering best practices. Reduced ticket resolution from several months to under 24 hours by redesigning incident response workflows and triage/escalation protocols, and architected Java microservices for cross-border settlement with high availability across distributed nodes.

Delivered platform modules for international US and EU clients within scope and on schedule. Optimized legacy codebases to reduce technical debt and improve throughput for high-volume financial platforms while coordinating client-facing technical communication across time zones.

Directed cross-functional teams of 4–5 developers and delivered 4 consulting projects end-to-end, from scoping through production deployment. Owned budget management for 2 projects using PMP estimation frameworks and standardized QA coordination/processes to reduce production-stage defects.

Designed and delivered the core engine of an Open Banking payment platform processing 100,000+ transactions per hour from scratch. Architected dynamic AWS auto-scaling based on real-time transaction load, integrated ISO 8583 modules for VISA/Mastercard multi-protocol support, and managed EC2/RDS/S3 infrastructure with PCI-DSS-aligned security and scalability.

Led a team of 3 developers designing and delivering an M2M/IoT engine that bridged embedded hardware with cloud software infrastructure. Owned delivery of the platform components connecting device-side systems to cloud services.

Built from scratch a production-grade cryptocurrency exchange engine supporting BTC, ETH, DASH, MONERO, DOGE, and PETRO token integration. Implemented automated settlement and reconciliation plus secure wallet infrastructure with cryptographic verification to prevent double-spending and ensure transaction integrity at scale.

Earned an Electronics Engineer degree from Universidad Simón Bolívar in 2010.