Software Engineer

Diego Perez Giordán

Backend engineer. Go at work, Rust on the side.
Currently at Cencosud. Open source when I can.

About me
Diego Perez Giordán

Background

Backend engineer at Cencosud, a LATAM retailer. I write Go microservices for a multi-banner e-commerce platform used in 5+ countries (Jumbo, Disco, Paris).

Outside of work I contribute to open source in Rust, the language I enjoy most. I also build small side projects to practice.

Uruguay

Timezone overlap with the US

Core Technologies

Languages

  • Go (Production)
  • Rust (OSS & Personal)
  • Node.js / TS

Backend

  • gRPC & Protobuf
  • PostgreSQL & MySQL
  • Clean Architecture

Infrastructure

  • Docker & Kubernetes
  • GCP
  • Tilt & CI/CD

Environment

  • Linux (Arch, Nix)
  • Neovim / Helix / Zellij
  • Claude Code / Agents / Herdr / Grok

Experience.

Backend Engineer

Cencosud S.A. - Digital Commerce
Dec 2025 - Present
  • ->Go microservices and REST/gRPC APIs for the WhiteLabel platform used in 5+ countries (Jumbo, Disco, Paris).
  • ->Moved 15 legacy endpoints to a decoupled setup. Latency dropped up to 60% using goroutines and a semaphore for rate limiting.
  • ->TDD, clean architecture, PostgreSQL.
GogRPCKubernetesGCPPostgreSQL

QA Automation Engineer

Cencosud S.A. - Digital Commerce
Apr 2023 - Dec 2025
  • ->Automated tests for multi-banner mobile apps across LATAM.
  • ->Scripts and test flows that cut regression time and raised coverage.
  • ->Got to know the platform and its APIs well enough to move into backend.
QATest AutomationAPI Testing

Backend Developer Trainee

Cencosud S.A. - Digital Commerce
Aug 2022 - Apr 2023
  • ->Built REST APIs in Node.js (Express, Nest) with MySQL for the Paris Chile e-commerce platform.
Node.jsExpressMySQL

Open Source.

Rust open source I actually use. Apache DataFusion and ApiArk.

berbicanes/apiark
Open PRs

Tauri Privacy-First API Client

Open PRs on ApiArk, a local-first API client (~60 MB): open requests tabs, gRPC reflection, custom title bars, env interpolation, JSONC parsing.

TauriRustTypeScriptgRPC
RoleContributor
Contributions10+ open PRs
StatusOpen
apache/datafusion
Approved

2-arg ceil() for Spark Compat

Added a scale argument to datafusion-spark's ceil() (ceil(3.145, 2) -> 3.15), same as Spark SQL. Updated signatures and return types.

RustSQLQuery Engine
apache/datafusion
Merged

Fix flaky sqllogictest filter

Stopped flaky parallel aggregate tests by dropping snapshot asserts that depended on DynamicFilter EXPLAIN output. Same-day fix.

RustTesting

Projects.

diegoQuinas/oxidia
Active

Oxidia Game Server

Open Tibia server in Rust (protocol 10.98, OTClient Redemption). Tokio for networking, custom packets, in-memory world state.

RustTokioMMORPG Architecture
diegoQuinas/liturgia-horas-tui

Liturgia Horas TUI

TUI in Rust for the Liturgy of the Hours. Offline, keyboard-only, Ratatui.

RustRatatuiTerminal UI

Contact.

diegoperezgiordan@gmail.com LinkedIn Profile GitHub @diegoQuinas Bluesky