Juan Manuel Rey

A little bit of me

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.

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.

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.

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.

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.

February 2022 – April 2022

February 2020 – February 2022

March 2019 – February 2020

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.

May 2017 – August 2017

Conducted ~10 penetration tests and successfully remediated all vulnerabilities.

July 2016 – May 2017

July 2015 – July 2016