Joaquín Lavera

Joaquín Lavera

Senior Software Engineer · fintech, banking & payment processing

Buenos Aires, Argentina · 12+ years of experience

About

I build backend systems where correctness matters: automated banking transactions, payment flows and the operational tooling around them. I like designing systems that stay clear, simple, flexible, auditable and error-safe as the company and the team grow. Before fintech I spent years in e-commerce analytics and enterprise SaaS, often as an early engineer wearing many hats.

Currently working on

Senior Software Engineer · AppCap

Jan 2026 – present

Fintech startup based in New York.

NFC wallet loyalty for a local coffee shop

Independent project · 2026

A tap-to-earn loyalty card that lives in Apple Wallet and Google Wallet. Customers tap their phone on an Apple VAS and Google Smart Tap certified NFC reader (ACS WalletMate II) at the counter; the reader decrypts the pass, the shop's system adds a stamp, and the updated balance is pushed back to the pass.

  • Apple Wallet / PassKit
  • Apple VAS
  • Google Wallet API
  • Google Smart Tap
  • NFC / PC/SC
  • ECDH & AES-GCM

Experience

  1. Senior Software Engineer

    AirOps

    Aug 2025 – Jan 2026

    LLM workflow platform for content and growth teams.

  2. Senior Software Engineer

    Undisclosed

    Aug 2024 – Jul 2025

  3. Senior Software Engineer

    Ampla (acquired by FundThrough)

    Jan 2021 – Dec 2024

    Co-built from scratch the system that processes automated banking transactions from user requests, including scheduling and coordinating multi-step transaction flows. It handles a continuously growing monthly volume in the billions of USD with only very minor issues. Built tools for the day-to-day operation of the banking system, and helped oversee the transition after the acquisition.

  4. Senior Software Engineer

    OrderMetrics

    Mar 2019 – Jan 2021

    First full-time engineering hire at an e-commerce analytics company. Worked daily with the CEO and CTO on execution and long-term technical and product plans. Owned database performance on AWS RDS, React frontend work and Scala API and data-sync services. Helped hire and onboard engineers, and selected and managed the contractor team that built the mobile app.

  5. Software Engineer

    Medallia

    Dec 2017 – Mar 2019

    Part of the effort to put a REST API layer in front of the existing monolith with Java and Spring: designed the new layer, adapted the domain model, and worked with the mobile and web teams to finish the integration.

  6. Software Engineer

    MuleSoft

    Oct 2015 – Nov 2017

  7. Programmer

    Latinnet

    Nov 2013 – Apr 2015

    Custom software for private and public-sector clients.

Skills

Education

Information Systems Engineering · Universidad Tecnológica Nacional (UTN), Buenos Aires