Lima, Peru · 12.04°S 77.04°W
Portfolio ’26 Full-Stack Engineer No 001

Oscar Taza — Full Stack Engineer

Routing◆Distributed systems◆Real-time

Full Stack Engineer — building at the intersection of solid systems and real products.

Available for remote roles
See my work → Get in touch
01 / About
photo · coming soon

I'm a Full Stack Engineer with 5+ years building production systems — from logistics ERPs handling high-concurrency operations to SaaS platforms built from scratch. My work lives at the intersection of solid architecture and real business impact.

I lead frontend development in React and TypeScript while staying close to the backend — designing API contracts, implementing microservices with Spring Boot, and thinking about systems holistically. I care about maintainability, performance, and the humans who use what I build.

Outside of client work, I'm exploring my own ideas — SaaS tools for local markets, automation, and products that solve real problems. Engineering for me isn't just a job; it's the clearest way I know to build things that last.

Based inLima, Peru
Experience5+ years
EnglishC2 Proficient · EF SET 74/100
AvailabilityOpen to remote roles
02 / Stack

Tools I reach for in production. Not a checklist — a working vocabulary.

Frontend /01
React · TypeScript
Next.js
Nx Monorepo
Tailwind CSS
React Native
Framer Motion
Backend /02
Java · Spring Boot
Hexagonal Architecture
NestJS · Node.js
REST · Event Driven
Azure Service Bus
PostgreSQL · Redis
Infra & Process /03
Azure DevOps · CI/CD
Docker
DDD · Clean Architecture
OpenAPI · Contract-first
Firebase
Git · Monorepo
03 / Experience
Jun 2025 — Present
CSTI Corp · DINET
Lima, Peru
Full Stack Developer
  • Leading frontend architecture for a logistics ERP serving high-concurrency environments across major clients including Adidas and Renzo Costa.
  • Implementing Spring Boot microservices with hexagonal architecture as part of the team's transition toward Event Driven Architecture.
  • Integrating Azure Service Bus to decouple critical operational flows including label generation and real-time shipment tracking.
  • Owning end-to-end delivery of modules: route management, ABAC permissions engine, and B2B/B2C tracking.
ReactTypeScriptSpring Boot Azure Service BusAzure DevOpsHexagonal Arch
Nov 2024 — May 2025
Atik Soluciones
New York, US · Remote
Full Stack Developer
  • Architected AloBooking, a hotel, flight, and car reservation platform built on DDD with NestJS microservices and Next.js.
  • Led an e-learning SaaS module for US-based special education programs, built in a Nx monorepo shared across multiple clients.
  • Built a real-time chat system for home medical management using React Native and Firebase — reducing patient response times by 30%.
Next.jsNestJSReact Native FirebaseNxDDD
Apr 2024 — Oct 2024
Grupo Flesan
Lima · Santiago · Remote
Systems Analyst
  • Built a logistics audit system that reduced manual workload by 80% and eliminated data loss across audit processes.
  • Refactored the digital signature flow, cutting API costs and accelerating signature management by 50%.
  • Unified legacy and new applications under a Nx monorepo, standardizing development across the group's companies in Chile and Peru.
ReactDjangoNxWebdox API
Jan 2023 — Apr 2024
GAF Computers
Lima, Peru
Full Stack Developer
  • Led development of Vocatio, a psychological assessment platform with role-based flows and detailed reporting in React.
  • Implemented GLPI customizations for Farmacias Peruanas, improving internal ticket management across Intercorp Retail business units.
ReactGLPIPHP
04 / Ideas in Motion

Things I'm building outside of work. Not finished products — active bets on problems worth solving.

Stamp
Building

Digital loyalty and rewards SaaS for local businesses. Customers register via WhatsApp and get their loyalty card directly in Apple Wallet or Google Wallet — zero app download required.

Node.jsPassKit API WhatsApp APIWallet Passes
Qura
Building

Healthtech marketplace for Peru connecting patients with verified doctors. Focused on making quality healthcare accessible and transparent — starting with the doctor discovery problem.

Next.jsReact HealthtechPeru
Caserita
Exploring

POS and sales management SaaS for small Peruvian businesses. Built around the informal economy — practical, offline-capable, and designed for how real vendors actually work.

ReactSaaS POSPeru
05 / Contact

Let's build
something serious.

I'm open to full-time remote roles and selective freelance work.
If what you're working on is interesting, reach out.

Get in touch →
Available for remote roles Lima —:— local
LinkedIn ↗ GitHub ↗