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elsauto/README.md

Hey, I'm Sebastiรกn ๐Ÿ‘‹ - Welcome to my GitHub portfolio!

LinkedIn GitHub

๐Ÿ“Œ Disclaimer: Due to NDAs, most of my work cannot be shared publicly. That said, here you'll find a few projects I'm proud to showcase โ€” they reflect my skills, experience, and offer a bit of storytelling about who I am.


I'm a Systems Engineer specializing in DevSecOps, Cloud Architecture, and Cybersecurity, with a proven track record in building secure, scalable infrastructure for fintechs, blockchain projects, and privacy-first SaaS platforms. Originally from Buenos Aires and now based in Valencia, Spain, I bring a hands-on approach to automation, secure development, and platform designโ€”while actively mentoring teams and driving engineering excellence across distributed environments.


๐Ÿš€ About Me

When I was just 6 years old, my father brought home an Apple IIeโ€”a moment that unknowingly set the course of my entire life. That early spark of curiosity led me to disassemble, enhance, and rebuild everything electronic in the house (sorry, mom). What began as childhood tinkering became a 26+ year career spanning software engineering, DevSecOps, cybersecurity, and cloud infrastructure.

Over the years, Iโ€™ve played key roles in launching and scaling successful startups across diverse industriesโ€”often wearing multiple hats. I thrive at the intersection of development, operations, and security, where I combine pragmatism with deep technical expertise.

Today, I design, build, automate, and harden distributed systems using C#, Python, and Node.jsโ€”leveraging modern stacks like Kubernetes, Terraform, and GitHub Actions to deliver secure, resilient, and scalable platforms. Iโ€™m passionate about building things right, embedding security early, and helping teams evolve into high-performing units.


๐Ÿ”ง Technical Skills

Languages & Tools

C# Node.js Python TypeScript JavaScript Bash

CI/CD

GitLab GitHub Actions Jenkins Argo CD

Cloud & Infrastructure

Docker Kubernetes AWS GCP Azure On-prem

IaaC/Automation

Terraform Pulumi Ansible n8n

Security

JWT OAuth2 OpenID Keycloak Auth0 Vault Tailscale OpenSSL OWASP

Observability and Monitoring

Prometheus Grafana Suricata Falco OSSEC WAF SOC2 DevSecOps Secure SDLC

Web & APIs

Microservices RESTful API GraphQL OAuth2 gRPC SOAP

Databases

PostgreSQL MongoDB MySQL Redis RabbitMQ Kafka


๐Ÿ’ผ Professional Snapshot

CTO | Uelz (Jan 2023 โ€“ Present)

  • Led the platformโ€™s microservices migration with Kubernetes and NestJS from a Monolith architecture.
  • Implemented CI/CD pipelines with GitHub Actions and Terraform.
  • Architected multi-cloud infrastructure (AWS/GCP) with full observability.
  • Designed and implemented our SaaS security layer.

DevSecOps & Cloud Consultant | Freelance (Ongoing)

  • Support fintechs, crypto exchanges, and privacy-first platforms in hardening infrastructure, automating deployments, and implementing secure development workflows.
  • Led production migration from legacy systems to cloud-native stacks.

Fractional CTO/CISO | International Nonprofit (2020 โ€“ Present)

  • Oversaw web/data projects in LATAM, EU, and Africa.
  • Built dashboards, scrapers, and advisory tools for NGOs.
  • Provided mentorship and security training during the pandemic.

(See full experience on LinkedIn)


๐ŸŽ“ Education

  • PhD Candidate in Computer Science โ€“ TalTech University (Estonia)
  • MSc in Cybersecurity โ€“ TalTech University
  • MSc in Systems Engineering โ€“ Universidad Abierta Interamericana (Argentina)
  • BSc in Systems Analysis โ€“ UTN (Argentina)

๐Ÿ›ก๏ธ Certifications

  • AWS Certified Cloud Practitioner
  • AWS Solutions Architect (in progress)
  • CCNA / CCNP / Microsoft Certified Systems Expert

๐ŸŽฏ Highlights

  • Built and secured scraping infrastructure with Puppeteer & Playwright.
  • Led secure fintech platform migration to EKS.
  • Delivered compliance tooling and DevSecOps automation.
  • Ongoing research: Secure MLOps in Kubernetes environments.

๐Ÿ“ข Letโ€™s Connect

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