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Mariano Ramírez

CTO | Fintech & Payment Infrastructure | Cybersecurity

> I imagine worlds. I breach them. I armor them.

[+]20+
LATAM countries
[+]40+
payment methods
[+]135+
currencies
[+]PCI DSS
aligned architecture
cyber@marianoram.com
Córdoba Capital, Argentina
GitHubLinkedIn

./origin_story.sh

Act I

IMAGINE

EXT. A WORLD THAT DOES NOT EXIST YET — NIGHT

It started with worlds that did not exist. I built them in my head: their rules, their characters, how they begin and how they end. Until I realized a system is exactly that: a world with rules.

Act II

BREACH

$ nmap -sV --script vuln world

But every world has a crack. A rule nobody tested, a door someone forgot to lock. I started hunting for them at night, on another screen, with Kali Linux. They always showed up.

Act III

ARMOR

[✓] critical infrastructure — online

Today I imagine the infrastructure money travels on across 20+ LATAM countries. By day I design it. By night I attack it. Nobody knows it better than the one who tried to breach it.

I imagine worlds.I breach them.I armor them.

CTO of S-Interio: I run the technology behind an international payments platform that moves money across 20+ LATAM countries, 40+ payment methods and 135+ currencies. Strategy, architecture, engineering and security, all under one command line.

I build the rails money travels on: pay-ins, payouts and integrations with acquirers, banks and local payment methods, on critical high-availability infrastructure where every millisecond, every reconciliation and every attack surface matters.

I came from offensive security and I never left. I still read code, tear architectures apart and attack my own systems before anyone else gets the chance. Threat modeling, pentesting, hardening and incident response are not an annual audit: they are how I operate.

The mission: autonomous engineering teams, minimal technology risk, integrations that ship fast, and a platform that turns into the business's unfair advantage.

ONLINE
STATUS: OPERATIONAL

Leadership & Strategy

Technology Strategy
Engineering Leadership
Product Roadmap
System Architecture
Technology Risk Management
Stack & Vendor Selection

Payments & Platform

Payment Architecture
Pay-ins & Payouts
PSP & Bank Integrations
RESTful APIs
Multi-currency (135+)
High Availability

Offensive Security & Risk

Pentesting (Burp, Nmap, Metasploit)
Threat Modeling
Incident Response
Hardening & WAF
Cryptography (TLS 1.3, AES-256)
PCI DSS & Fraud Detection

Engineering & Cloud

TypeScript & JavaScript
React & Next.js
Node.js
AWS (EC2, Route 53)
Cloudflare
Linux & Kali

Spanish

Native

English

Very Fluent

Icelandic

Advanced

Professional Experience

Mission 01 // Active

S-Interio Limited[Jul. 2025 - Present]
  • Own the technology strategy and roadmap of an international payments platform operating across 20+ LATAM countries
  • Command the development, infrastructure and technical operations teams; final call on stack, cloud and architecture
  • Architected the high-availability core for pay-ins and payouts across 135+ currencies with sub-second latency
  • Connected 40+ local and international payment methods to a single API platform
  • PCI DSS-aligned security architecture: cryptography, secure transport and data protection (TLS 1.3, AES-256, SHA-256/HMAC)
  • Red team on my own platform: continuous pentesting, security audits and hardening of the payment infrastructure
  • Fraud detection, threat monitoring and incident response on live financial traffic
  • Operate with international teams and partners across multiple languages and time zones

Mission 02 // Completed

CyberCloudStudios[Jan. 2023 - Jul. 2025]
  • Built and shipped full-stack web platforms with React, Next.js and RESTful APIs
  • Led the migration from on-premise infrastructure to AWS, gaining performance and scalability
  • Locked down infrastructure with Security Groups, firewalls and hardened SSH access
  • Deployed Cloudflare WAF and bot mitigation to shield production from automated attacks
  • Hardened network services and DNS (Route 53) against misconfiguration and abuse

Bachelor's Degree in Information Security

Universidad Siglo 21

Córdoba, Argentina

2023 - Present

Specialization in vulnerability analysis, cybersecurity and systems protection

Bachelor's Degree in Film and TV

Universidad Nacional de Córdoba

Córdoba, Argentina

2018 - 2022

Training in audiovisual production

Exchange Student

Verzlunarskóli Íslands

Reykjavik, Iceland

2016 - 2018

International academic exchange program

TypeScriptJavaScriptReactNext.jsNode.jsRESTful APIsGitAWS EC2Route 53Security GroupsCloudflare WAFLinuxKali LinuxBurp SuiteMetasploitNmapWiresharkPCI DSSTLS 1.3AES-256SHA-256 / HMACPayment GatewaysFraud Detection

root@kali:~$ ./connect.sh

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