Software Engineer · Buenos Aires, Argentina

Diego Kippes

Software, payments and continuous learning.

I’m a Senior Software Engineer at Mercado Libre. I work on checkout and payment systems, and study Computer Science at Universidad Nacional de Quilmes, where I’m also a teaching assistant.

Mercado LibreUNQ
Explore my journeyDownload résuméPDFLet’s talk

experience

My journey brings together backend engineering, payment systems and the evolution of products in production.

  1. Mercado Libre

    Senior Software Engineer

    Checkout ON · Payments

    2021 – Present

    • Progressed from Backend Analyst to Semi Senior and Senior, taking responsibility for critical checkout and payment flows.
    • Designed and improved DEBIN flows, checkout with KYC and payment result screens, improving approval rates by up to 3%.
    • Implemented Mercado Crédito flows and BIN-based campaigns, improving conversion and payment approval by up to 5%.
    • Reduced checkout errors by 10% through validation, error handling and architectural migrations, supported by metrics and operational monitoring.
    • Java
    • Spring Boot
    • Microservices
    • AWS
    • Docker
    • Datadog
    • A/B Testing
    • Feature Flags

  2. IncluIT

    Backend Developer

    Naranja X

    2021

    • Automated the generation and scheduled submission of billing documents for the transportation sector.
    • Java
    • Spring Boot
    • REST
    • CI/CD

  3. BierClub

    Full Stack Developer

    E-commerce

    2020 – 2021

    • Built an e-commerce application for a craft brewery, from product definition to production deployment.
    • React
    • Node.js
    • Express
    • MySQL
    • Sequelize
    View repository

education

University studies and teaching are part of my professional journey. I keep learning and sharing what I learn.

Universidad Nacional de Quilmes (UNQ)

Academic background

Bachelor’s degree in Computer Science

In progress

University studies in computer science, complementing my professional practice in software engineering.

Academic background

University Technical Degree in Computer Programming

Completed · 2025

University qualification in computer programming.

Teaching

Teaching Assistant · Data Structures

2023 – Present

I contribute to teaching Data Structures at UNQ.

projects

A look at the work behind the code: context, responsibilities and technologies.

E-commerce · 2020 – 2021

BierClub

An e-commerce application for a craft brewery: a complete experience spanning the interface, data persistence and email delivery.

Full Stack Developer

My contribution

End-to-end development and production deployment. Responsive React frontend, Node.js and Express REST API, MySQL with Sequelize, and email delivery with Nodemailer.

  • React
  • Node.js
  • Express
  • MySQL
  • Sequelize
  • Nodemailer
Explore the code on GitHub

about_me

I enjoy building software that solves concrete problems and can evolve over time. My focus is on Java, distributed systems and code quality.

I work iteratively: ship solutions to production, observe their behavior through metrics, and improve them based on what I learn. University studies and teaching are part of that same process.

Languages

Spanish
Native
English
B2 · Upper intermediate

technologies

Technologies and tools from my journey. Java and backend engineering are at the core of my professional practice.

Languages

  • Java
  • Kotlin
  • Go
  • JavaScript

Backend & architecture

  • Spring Boot
  • Node.js
  • REST
  • Microservices
  • Event-driven
  • API Design

Infrastructure

  • AWS
  • Docker
  • CI/CD

Databases

  • PostgreSQL
  • MySQL
  • Redis
  • MongoDB

Observability

  • Datadog
  • Kibana
  • Grafana
  • New Relic

Quality & experimentation

  • JUnit
  • Mockito
  • Feature Flags
  • A/B Testing

Tools

  • Git
  • Cursor
  • GPT
  • MCP
  • n8n

contact

Let’s talk about software engineering, distributed systems, teaching or projects. You can find me through these channels.

Emailkippes.diego@gmail.comLinkedIn/in/diegokippesGitHub/dkippes