Hi, I'm Gianmarco Zapata. Software engineer specialized in scalable backend architectures with Go and NestJS, strict relational database modeling in PostgreSQL, and production-ready commercial web products.
Software Architect & IT Consultant
Engineering solutions built from clean architecture and domain logic, delivering tested, maintainable source code ready to scale.
Scalable architectures in Go and NestJS with strict separation of concerns (Clean Architecture), asynchronous RabbitMQ queues, and high-performance REST APIs.
Fast point-of-sale platforms, multi-warehouse stock control, barcode scanning, cash drawer reconciliation, and batch traceability for production and export.
Robust relational database schema design in PostgreSQL and MySQL, high-performance indexing, safe ACID transactions, and zero-downtime migrations.
Executive web interfaces in React and Next.js with TypeScript, direct hardware integration (WebRTC cameras, barcode scanners), and multi-channel e-commerce sync.
Interactive demos deployed on dedicated subdomains with real database schemas and domain logic.
Property management platform for lease contracts, recurring billing, and occupancy tracking across multi-family buildings.
Real-time point of sale and inventory control for retail and fashion stores with size and color variants.
Agricultural batch traceability, field weighing, cold storage chambers, and grower settlement management.
Industrial photography station with live webcam capture, shot optimization, and multi-channel sync to Shopify and WooCommerce.
High-converting landing pages designed to capture leads across industries. Turnkey delivery in 48 hours with copy, visual assets, and WhatsApp integration ready to sell.
Prefabricated Homes & Land Developments
Home models catalog by sq.m., 45-day turnkey delivery timelines, project gallery, and interactive financing calculator.
Law Firm & Civil and Corporate Advisory
Executive and trustworthy layout featuring practice areas, attorney track records, and direct confidential consultation booking.
Precision Mechanics, Brakes & Diagnostics
Online appointment booking built into the Hero, computerized scanner diagnostics, service pricing, and maintenance plans.
Country Cabins, Blueprints & Construction
Interactive 3D structural cross-section, 5 contractual build warranties, cabin model catalog, and instant budget estimator.
Browse the complete catalog with industry filters and real-time responsive preview for desktop, tablet, and mobile.
Every project follows a predictable engineering cycle focused on backend reliability, sub-second response times, and long-term maintainability.
We analyze the real operational bottleneck—billing workflows, warehouse constraints, or inventory tracking—before writing a single line of code.
Strict relational schema design in PostgreSQL/MySQL, high-speed query indexing, and clear REST API contract definitions.
Decoupled implementation with Clean Architecture in Go or NestJS, reactive Next.js frontend, and continuous validation with zero technical debt.
Server provisioning, Docker containers, secure Cloudflare subdomains, and complete handover of documented source code.
// Domain entity with zero external dependencies
type RentalContract struct {
ID uuid.UUID `json:"id"`
TenantID uuid.UUID `json:"tenant_id"`
Amount money.Cents `json:"amount"`
Status ContractStatus `json:"status"`
}
// Atomically creates lease with payment ledger
func (s *Service) ExecuteLease(ctx context.Context) error {
return s.db.WithTx(ctx, func(tx *Tx) error {
tx.InsertContract(lease)
tx.PublishEvent("lease.activated")
return nil
})
}
I am Gianmarco Zapata, based in Piura, Peru. Throughout my career I have specialized in building software that solves concrete operational challenges: from agricultural batch traceability and cold storage chambers to real estate platforms and retail point-of-sale systems.
Full Stack Software Engineer & Cloud Architect
Piura, Peru
Let's discuss your business requirements, recommended architecture, and live interactive demos with no obligation.