Success Stories
FinTech and E-commerce systems in production. The engineering behind each solution.
Sago One
Enterprise ERP and Electronic Invoicing Platform
All-in-One ERP SaaS that eliminates hours of redundant administrative work weekly for Panamanian businesses. Certifies invoices with the DGI, manages real-time inventory, and operates a touch POS — all under an offline-first architecture that guarantees operational continuity and uninterrupted revenue even without internet. Payroll and inventory automation directly reduces fixed costs and eliminates the risk of tax penalties from human transcription errors.
The Technical Challenge
The critical challenge: guarantee business continuity — and revenue — during connectivity outages, which in emerging markets represent direct sales losses. The Service Workers and background sync solution ensures every transaction is recorded and invoiced regardless of network stability, protecting business cash flow at its most vulnerable moment.
Technical Highlights
AES-256 encryption for PAC/DGI credentials. Mitigates the risk of tax penalties and corporate data breaches that could represent five-figure losses.
DGI Invoicing, touch POS, real-time inventory, and legal payroll integrated. Eliminates data silos and reduces monthly accounting close time.
React Server Components for optimal rendering. Every guaranteed uptime minute protects revenue: no downtime, no lost sales, no penalties for missing invoices.
Production Metrics
Tech Stack
Plenty Market
PWA E-commerce with Partner Program and Inventory Management
Migration from static infrastructure to a high-performance e-commerce platform with a direct impact on conversion: TTI reduced to under 3 seconds, a critical factor given that each additional second of latency reduces conversion rates by 7%. Integrates a logistics Partner Program with tax-free zones and real-time inventory sync, enabling business models and revenue streams that the previous architecture made impossible.
The Technical Challenge
The challenge was migrating a static site to a full e-commerce platform without degrading user experience or losing existing SEO positioning. The Next.js 14 solution with aggressive asset optimization achieved sub-3s load times, increasing user retention and reducing cart abandonment at critical conversion funnel stages.
Technical Highlights
Zustand for overhead-free cart management. Persistent state between sessions: less checkout friction, higher conversion rate, lower cart abandonment.
Cloudinary with automatic WebP/AVIF transformation reduces image load time by 60%. In e-commerce, speed is a direct revenue lever.
PostgreSQL (Neon) via Prisma ORM guarantees data integrity under massive volumes. Infrastructure ready for traffic peaks without degradation or over-provisioning costs.
Production Metrics
Tech Stack
HKA-SDK
Multi-tenant SOAP fiscal gateway for HKA PAC
SDK and fiscal gateway for HKA PAC that abstracts SOAP protocol complexity with strict validation, dynamic document-type routing, and native multi-tenant support. Extracted from Sago One so any fiscal project in Panama can integrate without re-implementing the protocol from scratch.
The Technical Challenge
Integrating HKA's SOAP is famously friction-heavy: inconsistent payloads, implicit validation, opaque error messages. The fix was a typed schema layer per document type, early compile-time errors, and stateless per-tenant configuration.
Technical Highlights
Typed schemas per DGI document type. Payload errors are caught before the network call, reducing failed PAC round-trips.
Endpoint resolution by document type with no hardcoding. Adding new documents doesn't touch the core.
Per-tenant credentials and config, zero global state. SaaS-ready from the very first commit.
Tech Stack
Gravital-Shell
Alpine Linux in your pocket, no root needed
Professional Linux terminal for Android — runs isolated Alpine Linux environments without root, with real PTY support, multiple sessions, APK package manager, and session export/import. Built for developers who need a serious environment on any device.
The Technical Challenge
Most Android terminals are approximate emulations that break tools needing a real TTY (vim, htop, less). Real PTY without root required combining proot with native Linux primitives from Kotlin/JNI.
Technical Highlights
Real pseudo-terminals on Android via proot, no root privileges. TUI tools just work.
Export/import the full state of a session. Pick up on another device exactly where you left off.
Install Alpine packages directly from the terminal with a native Android UI.
Tech Stack
Gravital-Share
VPN routing for devices on the hotspot
Solves a concrete Android VPN routing gap: ensures traffic from hotspot-connected devices is routed through the host device's VPN tunnel. Useful for remote teams sharing a secure network from a single device.
The Technical Challenge
Android by default doesn't route hotspot traffic through the host's VPN tunnel. The fix dynamically manipulates iptables/nftables rules and monitors VPN state to prevent leaks.
Technical Highlights
Dynamic iptables/nftables rules automatically route hotspot traffic through the active VPN tunnel.
Native Rust component with minimal memory footprint. Doesn't interfere with the host device's own traffic.
If the VPN drops, forwarding stops. Zero unprotected-traffic leakage.
Tech Stack
Gravital-Talk
Standalone audio library with Gravital ID
Standalone audio and communication library with native Gravital ID authentication and Gravital Cloud persistence. Designed to be embedded in apps needing secure voice channels without depending on proprietary SDKs.
The Technical Challenge
Most voice SDKs are proprietary black boxes with expensive licenses and little control over the audio chain. Building a native pipeline in Rust gives full control over filters, latency, and persistence, drawing on years of DSP experience.
Technical Highlights
Low-latency audio filters built from Digital Signal Processing principles applied during my years as an audio engineer.
Native integration with the Gravital identity system, no client-side credential exposure.
Sessions, recordings, and metadata synced to Gravital Cloud with end-to-end encryption.
Tech Stack
Need high-level development?
Let's build systems that scale. Available for FinTech, E-commerce and SaaS projects.