maycon @ edge-infra :~$ whoami

Maycon Ritzmann

Staff Site Reliability Engineer ▋

Systems fail. What matters is how fast you understand why and what you do about it. That's what I've spent 12 years learning.

Get in touch GitHub LinkedIn Projects
~8B
daily requests
12+
years of experience
5+
years at iFood
Staff
SRE level
Brazil · UTC-3 · Working remotely
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01 / about

Who I am

I started as a computer technician fixing machines for small businesses in Joinville. No plan, just curiosity and a need to understand how things work. Twelve years later I'm operating edge infrastructure that carries Latin America's internet. And I still approach every system the same way: what breaks, why, and how do we make sure it doesn't happen again.

Staff Site Reliability / Production Engineer with 12+ years of experience operating and evolving mission-critical systems in high-scale cloud environments.

Strong background in incident leadership, reliability engineering, and cross-team collaboration to ensure availability, performance, and resilience under pressure. Experienced in designing and operating cloud-native platforms, leading modernization and migration initiatives, and improving system observability and operational maturity.

Hands-on expertise with AWS, Kubernetes, Terraform, CI/CD, and observability stacks – always with a focus on reducing MTTR, preventing incidents, and enabling engineering teams to move faster and safer. Beyond the technical work, I enjoy mentoring engineers and helping teams raise the operational bar – reliability depends as much on communication and ownership as it does on tooling.

Currently working as a Staff SRE at iFood – Latin America's largest food delivery platform – designing and operating edge and API gateway infrastructure handling ~8 billion daily requests.

Focus Areas

  • Edge & Traffic Infrastructure
  • API Gateway Platforms
  • Kubernetes & Cloud (AWS)
  • Incident Command & SRE
  • Observability & Reliability
  • Platform Automation (Python)

Languages

Portuguese Native
English Full Professional
French Elementary

Education

DevOps Engineering (CST)

Anhanguera · 2022–2024

Computer Technician

UNISOCIESC · 2012–2013

02 / experience

Career timeline

iFood

São Paulo, Brazil · Remote

4 years 7 months

October 2021 – Present

This is where scale stopped being abstract. Every decision carries weight when a bug means millions of people can't order their next meal.

Staff Site Reliability Engineer

current

June 2025 – Present

11 months

Member of the Layer 7 SRE team, focused on designing, operating, and evolving large-scale traffic and edge infrastructure supporting critical business flows.

  • › Technical owner of iFood's API Gateway platform, leading scalability, reliability, and performance initiatives for systems handling 2.2+ billion requests per month.
  • › Architect and owner of the Edge traffic platform, responsible for ~8 billion daily requests, ensuring low-latency, high-availability traffic management at massive scale.
  • › Led performance, reliability, and cost optimization initiatives, reducing latency and error rates while implementing blast radius reduction strategies and disaster recovery testing.
  • › Drove edge security and acceleration improvements through deep integration with Akamai and Cloudflare, enhancing HTTP protocol handling, resilience, and content delivery performance.
  • › Designed and optimized advanced Kubernetes ingress architectures, including custom ingress classes for HTTP and gRPC traffic, tuned for long-lived connections and application-specific workloads.
  • › Led large-scale network troubleshooting and optimization efforts, addressing traffic shaping, high-throughput scenarios, and performance bottlenecks through Linux kernel and ENI-level tuning.
  • › Act as incident lead and escalation point during high-severity production events, ensuring fast recovery and system stability across distributed teams.
  • › Participate in 24/7 on-call rotation as part of shared ownership of production reliability.

Staff Production Support Engineer

April 2022 – June 2025

3 years 2 months

Staff-level engineer responsible for reliability, scalability, and operational excellence of mission-critical production systems supporting millions of users.

  • › Owned incident response and operational reliability for high-traffic, business-critical systems, acting as escalation point and technical lead during high-severity events.
  • › Drove operational maturity through automation and platform improvements, reducing manual intervention and improving recovery times.
  • › Led root cause analysis and post-incident reviews, translating operational failures into concrete engineering improvements.
  • › Designed and implemented automation solutions in Python, including an internal chatbot leveraging LlamaIndex to streamline operational workflows and reduce support friction.
  • › Architected and operated Kubernetes-based platforms and AWS infrastructure, ensuring scalability, resilience, and predictable performance.
  • › Led infrastructure automation initiatives using Terraform, Packer, and Ansible to standardize environments and improve deployment safety.
  • › Evolved CI/CD pipelines (GitLab) to enable faster and more reliable releases with reduced operational risk.
  • › Owned observability strategy and improvements, integrating Datadog, Prometheus, Grafana, and logging systems to improve detection and diagnosis of production issues.
  • › Optimized performance and reliability of critical components, including Redis/ElastiCache, Kong API Gateway, Akamai, and NGINX.
  • › Mentored and coached junior engineers, raising the overall operational and technical bar of the team.

Senior Production Support Engineer

October 2021 – April 2022

7 months

  • › Operated and evolved Kubernetes-based platforms and AWS infrastructure supporting millions of daily active users.
  • › Contributed to reliability, observability, and incident response practices across business-critical services.
  • › Optimized performance and reliability of critical components including Redis/ElastiCache, Kong API Gateway, Akamai, and NGINX.

Claranet

São Paulo, Brazil · Remote

9 months

February 2021 – October 2021

My entry point into iFood's world, operating at a scale I'd never seen before and learning fast that production is unforgiving.

Senior System Engineer

February 2021 – October 2021

9 months

Worked as a dedicated Production Support Engineer fully allocated to iFood, supporting high-traffic production environments and critical platform services.

  • › Operated Kubernetes clusters (Kops and EC2-based) and AWS infrastructure supporting iFood's high-traffic production environment, ensuring availability and operational stability.
  • › Contributed to reliability, observability, and incident response practices across critical platform services using Prometheus, Grafana, and Zabbix.
  • › Built and maintained CI/CD pipelines with Jenkins and Terraform-based IaC, improving deployment consistency and reducing configuration drift.
  • › Supported distributed workloads running on AWS (EC2, SQS, SNS, Route 53, VPC), troubleshooting production incidents and improving system reliability.

TOTVS

Joinville, Santa Catarina, Brazil · Remote

6 months

September 2020 – February 2021

Where I first learned to think in terms of reliability, not just uptime. There is a difference.

Site Reliability Engineer

September 2020 – February 2021

6 months

  • › Operated and improved Kubernetes-based platforms on AWS, ensuring high availability, performance, and predictable deployments for critical applications.
  • › Contributed to cloud infrastructure design and evolution, working with AWS services such as EKS, ECR, VPC, Route 53, CloudFront, and CloudWatch.
  • › Automated CI/CD pipelines using GitLab, Jenkins, and Bamboo, reducing deployment friction and improving release reliability.
  • › Implemented Infrastructure as Code practices with Terraform to standardize environments and reduce configuration drift.
  • › Improved monitoring, alerting, and observability, integrating Prometheus, Alertmanager, Grafana, and Zabbix to enhance incident detection and response.
  • › Supported and automated Linux-based infrastructure, leveraging Ansible and Chef to improve operational consistency.
  • › Collaborated closely with engineering teams to translate reliability requirements into practical platform improvements.

SoftExpert

Joinville, Brazil · Hybrid

6 months

April 2020 – September 2020

A turning point: migrating legacy infrastructure to Kubernetes and seeing firsthand what modern platforms can do.

DevOps Engineer

April 2020 – September 2020

6 months

Worked on the evolution of infrastructure supporting enterprise SaaS applications, with focus on reliability, scalability, and cloud adoption.

  • › Led migration of on-premises workloads to Kubernetes on AWS (EKS), transitioning from legacy infrastructure to a more scalable and resilient architecture.
  • › Defined and implemented Terraform standards for infrastructure as code, establishing reusable and consistent cloud provisioning practices.
  • › Automated Linux-based infrastructure and CI/CD pipelines, improving operational consistency and deployment reliability.
  • › Built monitoring and observability using Prometheus, Grafana, Alertmanager, and Loki, improving detection and response to production issues.

Eiti Solutions

Joinville, Brazil

1 year 6 months

October 2018 – March 2020

Where the foundations were built. Kubernetes before it was mainstream, and a deep respect for how critical systems behave under pressure.

Infrastructure Analyst

October 2018 – March 2020

1 year 6 months

  • › Operated and maintained business-critical infrastructure – networks, servers, and core services – ensuring continuous availability and operational stability.
  • › Managed on-premises and hybrid Kubernetes clusters, building foundational container orchestration skills in high-criticality production environments.
  • › Automated CI/CD workflows with Jenkins, Ansible, and Puppet, reducing manual operational effort and improving deployment consistency.
  • › Built monitoring and observability with Zabbix, Grafana, and Prometheus, improving visibility into system health and accelerating issue detection.
  • › Administered core network services including DNS, DHCP, and email platforms (Zimbra, Postfix), ensuring reliable communications infrastructure.
  • › Operated Docker Swarm and Foreman environments, supporting application lifecycle management across containerized workloads.
  • › Contributed to AWS and IBM Cloud adoption initiatives, supporting the team's transition to hybrid and cloud-native architectures.

Open Technology

Joinville, Brazil

4 years 9 months

January 2014 – September 2018

Twelve years ago, this is where it started. Fixing computers, managing networks, learning that every system tells you what it needs if you listen.

Network Administrator

April 2017 – September 2018

1 year 6 months

  • › Operated AWS-based and on-premises infrastructure supporting Linux and Windows workloads across applications, databases, web, and email services.
  • › Implemented Puppet-based IaC to standardize system configurations, reducing manual operations and configuration drift.
  • › Designed and maintained production email platforms (Postfix, Dovecot, Roundcube, anti-spam), ensuring reliable communications for business workloads.
  • › Automated repetitive operational tasks with shell scripting, improving team efficiency and reducing toil.
  • › Deployed and maintained Zabbix monitoring and alerting, ensuring system availability and early detection of issues.
  • › Administered Linux and Windows Server environments (2003–2016, Debian, Ubuntu, CentOS), managing OS lifecycle and system health.
  • › Managed core network services – DNS, DHCP, domain controllers, file sharing, print, and remote access.
  • › Designed firewall and network security configurations using iptables, proxies, and traffic control.
  • › Defined and validated backup and disaster recovery routines, ensuring data protection and operational continuity.

Computer Technician

January 2014 – April 2017

3 years 4 months

  • › Delivered hands-on technical support for servers, desktops, and notebooks in business environments, ensuring continuity of client operations.
  • › Assembled, configured, and maintained hardware systems to operational and client specifications, developing strong foundations in system internals.
  • › Troubleshot networking and OS issues across Linux and Windows environments, building early expertise in TCP/IP and system operations.
  • › Advised clients on technical requirements and equipment selection, developing customer-facing communication and problem-solving skills.

03 / skills

Technical toolkit

Traffic & Edge

Nginx Kong API Gateway Akamai Cloudflare Envoy gRPC HTTP/2 NGINX Ingress

Cloud – AWS

EKS EC2 VPC Route 53 CloudFront ElastiCache ECR CloudWatch RDS EBS SQS S3

Infrastructure & IaC

Kubernetes Terraform Ansible Packer Puppet Docker Linux Helm

Observability

Datadog Prometheus Grafana Alertmanager Zabbix OpenTelemetry

CI/CD & Automation

GitLab CI Jenkins Bamboo Python Go Node.js Bash / Shell LlamaIndex

Networking

TCP/IP iptables Service Mesh Content Delivery Networks DNS

SRE Practices

Incident Command Production Engineering Post-mortem Culture Capacity Planning Blast Radius Reduction Disaster Recovery Distributed Systems

Credentials

Certifications

Grouped by domain – same stack as the toolkit above.

Kubernetes & cloud

  • CKA

    Certified Kubernetes Administrator

    The Linux Foundation

  • AWS

    Architecting on AWS

    Amazon Web Services

  • AWS

    Cloud Practitioner Essentials

    Amazon Web Services

Infrastructure & platforms

  • TF

    HashiCorp Certified: Terraform Associate

    HashiCorp

  • LPI

    LPIC-1

    Linux Professional Institute

Observability

  • DD

    Datadog Certified: Log Management Fundamentals

    Datadog

04 / projects

Things I'm building

Side projects and public initiatives – not day-job work, but where I invest in the broader SRE and platform community.

  • SRE Labs

    Live

    Hands-on learning for SRE, DevOps, cloud, and Kubernetes – challenges, community, and portfolio-ready work.

    I built SRE Labs because I couldn't find a place that taught reliability the way I learned it: by doing.

    About

    SRE Labs is my public education project: a place to grow a serious, practical learning ecosystem (not just courses) for people entering reliability and platform roles. The focus is real exercises, peer community, and eventually cohorts and self-service labs – so newcomers can go from fundamentals to job-ready with evidence they can ship in production.

    Community Education Kubernetes DevOps
    Visit sre-labs.io

  • Practical SRE Mentorship

    Live

    A guided 30-day production-style challenge with four 1:1 live sessions – for developers and SREs who want real practice, not only courses and certs.

    One-to-one because that's how I grew. Someone showing me the gap between what I thought I knew and what production actually requires.

    About

    One-to-one mentorship built around incidents, observability, and reliability trade-offs you can defend in interviews. You get a tailored challenge, a GitHub playbook, help shaping your own study lab, and live videocalls so the work becomes a portfolio case aligned with what hiring teams actually ask in production roles.

    Mentorship SRE Education Career
    Visit mentoria.ritzmann.io

05 / contact

Let's connect

I'm always open to interesting conversations about infrastructure, reliability engineering, and challenging problems at scale.

Whether it's a technical discussion or just to say hello – feel free to reach out.

$ curl -X POST

--data '"opportunity"'

mayconritzmann@gmail.com

→ 200 OK · will reply within 24h

or reach me at +55 47 99997-4698

Email

mayconritzmann@gmail.com

WhatsApp

+55 47 99997-4698

LinkedIn

linkedin.com/in/mayconritzmann

GitHub

github.com/mayconritzmann