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Achievements

Achievement: QuickdrawAchievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Public SponsorAchievement: Arctic Code Vault Contributor

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juanmafx/README.md

Juan Manuel Ramallo

Senior Full Stack Engineer & Tech Lead · 10+ years · Banking · Government · High-Traffic Platforms

Córdoba, Argentina · LinkedIn · Email · +54 9 351 311 8724

What I Do

I build and lead production systems that handle real money, real users, and real deadlines. My career spans three of Argentina's largest banks, government financial infrastructure, and US-facing platforms serving 160+ venues nationwide.

I'm the person who deploys on Saturday night, debugs the nginx config at 2am, and still reviews PRs on Monday morning. Full-stack engineering with a delivery mindset.

Impact Highlights

What Result
WordPress platform optimization Page load: 15s → <500ms (30x faster) across 160+ US venues
Microservices migration at Scotiabank Legacy monolith → Spring Boot services, multiple per day at peak
Authentication modernization at BBVA Hardware tokens → digital auth for thousands of banking users
Multi-environment deployment 3 environments (dev/stg/prd) end-to-end: Docker, nginx, SSL, Django, Stripe
E-commerce MVP at Flexxus Production-ready PrestaShop module delivered in 2 weeks
Government-banking integration Connected Central Bank (BCRA) + judicial systems via secure validation platform

Technical Stack

Backend: PHP · Laravel · Node.js · Java (Spring Boot) · Python · REST APIs · Microservices
Frontend: React · Redux · Angular · JavaScript (ES6+) · HTML5 · CSS3
Databases: MySQL · PostgreSQL · Microsoft SQL Server · Redis
DevOps: AWS · Docker · Docker Compose · nginx · SSL/TLS · CI/CD · Git
Monitoring: New Relic · SQL Monitor · OPcache · Redis
Platforms: WordPress (custom plugins at scale) · PrestaShop · Sitecore · Swagger/OpenAPI
Security: WCAG · Digital Auth Systems · Banking Security (COELSA, BCRA)

Career Path

2022–Present  OutCode / Lean Solutions    Tech Lead & Sr. Full Stack Engineer
2020–2022     Scotiabank                  Full Stack Engineer (Enterprise Banking)
2019–2020     BBVA                        Full Stack Engineer (Security & Banking)
2018–2019     Santander                   Full Stack Engineer (Investment Systems)
2017–2018     Flexxus                     Full Stack Engineer (ERP & E-commerce)
2015–2017     Kolektor / Government       Software Developer (Financial-Gov Integration)

Education

  • B.Sc. Computer Science — Universidad Nacional de Córdoba
  • Technical Degree in Programming — Universidad Tecnológica Nacional

Certifications

  • React Developer — Meta (2024)
  • Web Applications Specialization — University of Michigan
  • Version Control with Git — Atlassian
  • Unix — Johns Hopkins University
  • SQL, PHP, JavaScript, Python — University of Michigan & Wesleyan University

GitHub Activity

3,944 contributions in the last year

Open To

  • Senior / Staff Full Stack Engineering roles (remote, USD)
  • Tech Lead & Engineering Management
  • System Architecture & Backend Leadership
  • High-impact contract opportunities with US companies

English: Full Professional · Spanish: Native

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