Vilacode

Software Engineer

RedAbierta SA • Fulltime

May 2026 - Present • 5 mos

Software Engineer specializing in cross-platform mobile development, secure financial payment systems, and high-performance backend architectures. Key Achievements & Responsibilities: • Cross-Platform Mobile Engineering: Engineered complete iOS compatibility for an enterprise electronic invoicing platform using Xcode, React Native, and Fastlane pipelines for TestFlight release automation. • Payment Processing & POS Hardware: Developed React Native applications for Smart POS terminals (Sunmi), integrating EMV, NFC, and magnetic stripe card readers with DUKPT encryption and ISO 8583 messaging standards (single & dual message). • Terminal Management System (TMS): Implemented remote provisioning, heartbeat monitoring, and centralized fleet management for POS hardware. • Scalable Backend & APIs: Built high-throughput web services and REST APIs utilizing Go, Rust, NestJS, and TypeScript. • AI & Cloud Integrations: Designed and deployed a conversational AI agent on AWS Bedrock featuring RAG, secure tool-calling, guardrails, and real-time streaming (SSE) analytics dashboards. • Process Automation: Automated internal workflows and data management pipelines, significantly cutting operational execution time.

Backend Developer

Cheetah Research AI • Freelance

Jun 2024 - Jan 2026 • 1 yr 7 mos

Backend Developer specializing in conversational AI security architectures, high-performance server logic, and scalable data-handling pipelines. Key Contributions: • Architected robust security protocols for conversational AI agents, protecting sensitive user data and enforcing strict access control integrity. • Engineered server-side logic and optimized user conversation flows, significantly cutting response latency and improving system performance. • Structured resilient backend data-handling processes for high-volume streams, ensuring high availability and scalability.