Profile picture of Alejandro
Location: Amsterdam, NL
Email: alejandro.sajaroff.nl@gmail.com
LinkedIn: in/alejandro-sajaroff
GitHub: asajaroff
Website: alejandro.sajaroff.com
Calendly: 15 minutes call

About

Passionate Site Reliability Engineer (SRE) with a strong affinity for open source technologies, deeply rooted in Linux systems and Kubernetes orchestration. Dedicated to leveraging cloud-native architectures and containerization to build scalable, resilient infrastructures. Experienced in managing complex distributed systems, automating infrastructure with Infrastructure as Code (IaC) tools, and optimizing performance through continuous monitoring and improvement. Committed to fostering collaboration within open source communities and using cutting-edge technologies to drive efficiency, reliability, and innovation in service delivery.

Key Skills:

  • Proficient with Linux and *BSD operating systems, with a strong foundation in OS fundamentals.
  • Early adopter of containerization and orchestration technologies (Kubernetes); active member of the CNCF community.
  • Expertise in computer networking and network architecture.
  • Experience building cloud-native, 12-factor applications.
  • Fluent in C, Go, Python, and shell scripting (sh/bash).
  • Extensive experience with Infrastructure as Code (IaC) tools like Terraform, Tofu, Terragrunt, and configuration management tools like Ansible.
  • Skilled in CI/CD automation pipelines using Jenkins, GitHub Actions, and CircleCI.
  • Advocate for scalable, maintainable software design best practices.
  • Strong interest in software architecture and design patterns.

Job Experience

Miro

Role: Site Reliability Engineer
Since: March 2023
Location: Amsterdam, Netherlands

A digital collaboration platform designed to facilitate remote and distributed team communication and project management.

Responsibilities:

  • Developing and maintaining CI/CD pipelines for Infrastructure as Code (IaC) workflows.
  • Managing Infrastructure as Code for both monolithic projects and microservices architectures.
  • Creating and maintaining IaC modules, enforcing best practices, and implementing guardrails, primarily using Terraform with some Ansible.
  • Ensuring governance and compliance across the Cloud Platform by managing policies and governance solutions.
  • Securing and managing legacy infrastructure to ensure stability and continuity.
  • Supporting development teams by providing infrastructure solutions, sharing expertise, and creating detailed documentation.

Tech stack: AWS (EC2, RDS, VPC, Elasticache, Elasticsearch), Terraform, Terragrunt, GitLab, GitHub, Java, Kotlin, Go, Node.js

Teamwork

Role: Platform Engineer
From: December 2019 to March 2023
Location: Cork, Ireland (remote)

A Software as a Service platform for task management and team collaboration software.

Responsibilities:

  • Assisting development teams and individual contributors in decoupling a large monolithic application into microservices.
  • Building, configuring, maintaining, and operating a production environment of Kubernetes clusters.
  • Creating developer tooling to emulate a fully functional local development environment composed of diverse systems and tools.
  • Writing and maintaining CI/CD pipelines for software artifact releases and deployments across multiple environments.
  • Developing internal tooling for managing various codebases.
  • Implementing and maintaining Graylog for centralized log management.

Tech stack: AWS (EC2, IAM and VPC), Kubernetes, Go, Node.js, Coldfusion, MySQL, ProxySQL, HAProxy

Naranja X

Role: Platform Engineer
From: December 2018 to December 2019
Location: Buenos Aires, Argentina

A financial services and digital wallet. Part of the group “Banco Galicia”.

Responsibilities:

  • Established the Cloud Infrastructure team, involved in interviewing, hiring, and onboarding new members.
  • Designed, implemented, and managed the entire cloud infrastructure for an electronic banking system.
  • Led incident management, including writing Root Cause Analyses (RCAs) and creating extensive technical documentation.
  • Designed and maintained cross-network connectivity between cloud providers, on-premise company infrastructure, and external B2B partners.
  • Oversaw network integrations with payment providers to ensure secure and reliable payment processing.

Tech stack: AWS, Azure, Kubernetes, Java, Node.js, MySQL

Atos Argentina S.A.

Role: Application Industrializer
From: July 2016 to December 2018
Location: Buenos Aires, Argentina

IT services consulting company, working on site for the PSA Groupe customer.

Responsibilities:

  • Implemented and maintained enterprise applications on UNIX-compatible operating systems.
  • Supported a wide range of enterprise technologies, primarily centered around Java (JVM) infrastructure.
  • Managed and maintained a complex workflow orchestration system using Control-M.
  • Administered databases, ensuring data integrity and performance in mission-critical systems.

Tech stack: Linux, Solaris, Oracle DB, IBM-DB2, Java EE, shell scripting, Citrix, XEN, QEMU

ELServer.com

Role: Platform System Administrator
From: June 2014 to July 2016
Location: Buenos Aires, Argentina

A shared web hosting platform.

Responsibilities:

  • Managed both on-premises and virtual infrastructure for a web hosting provider.
  • Maintained and set up on-premises infrastructure to ensure optimal performance and reliability.
  • Implemented and managed OpenStack for cloud infrastructure solutions.
  • Developed a web-based platform for creating and managing MySQL databases.

Tech stack: Linux, MySQL, Wordpress, Ruby, Type 1 Hypervisors, bash, perl

Universidad Tecnológica Nacional

Role: System Administrator & Support Agent
From: March 2010 to December 2013
Location: Haedo, Argentina

Highly regarded institution for engineering-related studies.

Responsibilities:

  • Managed internal services including computer networks, email servers, DNS, and storage systems.
  • Provided technical support to University staff.

Education

Bachelor’s Degree in Computer Science

Institution: Universidad Tecnológica Nacional, Haedo
Graduation Year: 2013
Location: Haedo, Argentina

Technical High School Degree

Institution: Escuela de Educación Técnica 1 (EET#1) de Ituzaingó
Graduation Year: 2005
Location: Ituzaingó, Argentina

Also available in PDF