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Juan Manuel Rey – Senior SRE | Senior DevOps Engineer


Summary

  • Using Docker and Docker Compose since 2017.
  • Prefer Kubernetes for orchestration; also experienced with Nomad.
  • Strongest experience with AWS, though also managed infrastructure on Azure.
  • Proficient in Go, Groovy, and Python.
  • Passionate about automating infrastructure with Terraform, with additional experience using Ansible.
  • Skilled in CI/CD using Jenkins, GitHub Actions, and Buildkite—including infrastructure management and pipeline maintenance.
  • Strong advocate for automation and Git in engineering workflows to prevent manual errors and improve team efficiency.
  • Former penetration tester with a strong focus on security at every layer—from infrastructure to application design. I prioritize building secure-by-default solutions, regularly conduct threat modeling, and embed security checks in CI/CD pipelines.
  • Believe in making data-driven decisions, with observability being essential to healthy infrastructure and informed choices.
  • Curious by nature; enjoy learning new technologies and tools to simplify workflows.
  • Lifelong interest in Linux and open source.
  • Value positive relationships with co-workers and have made many lasting friendships at work. I consider myself empathetic, responsible, and a team player.
  • Embrace challenges and have no hesitation in taking risks.

Professional Experience

Borderless Labs – Lead DevOps Engineer

December 2024 – Present

  • Sole Infrastructure Engineer responsible for building the infra from scratch.
  • Designed and deployed full VPC and networking, including private/public subnets for staging and production.
  • Architected multi-account AWS setup using AWS Organizations with SSO.
  • Implemented a WireGuard-based VPN to avoid unnecessary public endpoints.
  • Set up EKS clusters and critical add-ons for both environments.
  • Developed multiple GitHub Actions CI/CD pipelines.
  • Defined internal processes related to SDLC.
  • Guidance for the development team regarding best practices for maintainability and scalability.
  • Designed and implemented a visibility solution using Prometheus and Grafana. Also implemented HyperDX for log collection.

Morean (Contract for Wonolo.com) – Senior DevOps Engineer

March 2024 – December 2024

  • Participated in quarterly planning and prioritization.
  • Mentored developers in DevOps practices and maintained Buildkite pipelines.
  • Maintained Nomad-based platform on AWS using Terraform and Ansible.
  • Isolated environments, streamlined user onboarding/offboarding, and improved internal infrastructure.
  • Introduced a Docker mirror, set up Android emulators in Docker for E2E testing.
  • Enhanced observability and automated business processes across units.

Mighty Block (Contract for Forte.io) – Senior DevOps Engineer

March 2023 – March 2024

  • Improved deployment processes to reduce complexity and downtime.
  • Mentored junior engineers and led internal initiatives with full documentation and planning.
  • Maintained multiple Kubernetes clusters and used AWS Lambda for microservices.
  • Re-architected request routing using API Gateway to unify entry points for EKS and Lambdas.
  • Led IaC adoption for Datadog and LaunchDarkly.
  • Spearheaded the migration from Harness to GitHub Actions, creating standardized reusable workflows.

Navan (formerly TripActions) – Senior Site Reliability Engineer

May 2022 – March 2023

  • Relocated to Amsterdam for this role.
  • Improved AWS ECS-based infrastructure, resolved incidents, and created Terraform modules.
  • Migrated static assets to S3 + Cloudflare, reducing load times by 10x.
  • Implemented IaC for Split.io feature flags; contributed PRs to its Terraform provider.

MuleSoft (a Salesforce Company)

Senior Member of the Technical Staff

February 2022 – April 2022

  • Part of the newly formed Developer Productivity team.
  • Focused on security/compliance tooling with minimal developer disruption.
  • Mentored new team members and helped with career growth.

Member of the Technical Staff

February 2020 – February 2022

  • Built infrastructure and developer tooling.
  • Maintained Jenkins, SonarQube, Nexus, Vault, and more.
  • Monitored infra with New Relic, logs with Sumo Logic.
  • Deployed tools to Kubernetes using Helm.
  • Founding member of a growing team.

Associate Member of the Technical Staff

March 2019 – February 2020

  • Started in SRE team for patching and infrastructure management.
  • Later joined Engineering Services to improve build tooling and processes.

Exo S.A – Sysadmin / DevOps

August 2017 – March 2019

  • Managed large-scale network using MikroTik equipment.
  • Handled 40,000+ bare-metal servers nationwide via SaltStack and Icinga2.
  • Managed mid-scale Azure infrastructure.

Penta Security Solutions – Ethical Hacker

May 2017 – August 2017

  • Conducted ~10 penetration tests and successfully remediated all vulnerabilities.

INdeR (Public Finance Ministry) – SysAdmin

July 2016 – May 2017


NEC Argentina – SysAdmin & Support

July 2015 – July 2016


Languages

  • Spanish (Native)
  • English (Advanced)

Hobbies

  • Amateur football and tennis player
  • Skateboarder and snowboarder
  • Hobbyist guitarist
  • Drone and mirrorless photography enthusiast

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