# Renato Ruis

**Tim DevOps** — Senior DevOps Engineer

Kubestronaut · CKA · CKAD · CKS · KCNA · KCSA

Portugal · Remote · distributed teams

- Email: renatoruis@linux.com
- LinkedIn: https://www.linkedin.com/in/renatoruis/
- GitHub: https://github.com/renatoruis
- Blog: https://timdevops.com.br
- HTML: https://cv.timdevops.com.br/en/

Why Tim? Ages ago some friends decided I looked like Tim Maia, a legendary Brazilian singer. The nickname stuck. The resemblance is debatable.

## Summary

Hey, I'm Renato, but most people know me as Tim. Senior DevOps Engineer with 8+ years building and scaling cloud platforms for e-commerce, fintech, pharma and logistics. Kubestronaut: all five CNCF Kubernetes certifications (CKA, CKAD, CKS, KCNA, KCSA). I've cut deployment time by up to 70% with CI/CD and GitOps, saved real money with FinOps, and moved entire Kubernetes platforms across clouds with barely any downtime. And I truly believe great infrastructure starts with people: transparency, blameless culture and staying calm when things catch fire.

## Quick facts for recruiters

- Based in Portugal (EU) · 100% remote
- WET/Lisbon timezone · easy overlap with EU and the Americas
- Portuguese native · English B1/B2 (honest about it)
- Senior DevOps/SRE · 8+ years · distributed teams
- CNCF Kubestronaut · 5/5 Kubernetes certifications

## Kubernetes Expertise

Kubernetes is my home turf. I'm a CNCF Kubestronaut, one of the engineers worldwide holding all five Kubernetes certifications, and I run it in production every single day, managed and self-hosted.

- All 5 CNCF certifications (CKA, CKAD, CKS, KCNA, KCSA), plus OCI Kubernetes Specialist
- Production experience with EKS, GKE, OKE, K3s, Rancher, ECS and bare-metal clusters
- Led full cluster replatforming: EKS/GKE to OKE migration, including MySQL/PostgreSQL with minimal downtime
- Security-first mindset (CKS): secrets management, network policies, hardening, supply-chain awareness
- GitOps delivery at scale with Argo CD and Flux CD: declarative, auditable, easy to roll back
- Cost-aware platform design: rightsizing, autoscaling and FinOps applied directly to cluster workloads

## How I Work

Tech skills keep systems running. Emotional intelligence keeps teams running. Here's what working with me looks like:

### Blameless by default

Incidents are learning opportunities, not trials. I build postmortem cultures where people feel safe telling the truth fast. That's how MTTR actually goes down.

### Mentorship & hiring

Currently leading the expansion of the Infra/DevOps team at eureciclo: hiring, mentoring and standardizing good practices so the team scales beyond me.

### Calm under pressure

Years of SRE on-call taught me that a calm voice in an incident channel is worth more than a clever script. I de-escalate first, debug second.

### Tech ↔ business translation

I explain infrastructure decisions in terms of cost, risk and speed, so non-technical stakeholders can actually make decisions.

### Cross-team enablement

I measure my success by how autonomous other teams become. Documentation, golden paths and pairing over gatekeeping.

### Grounded & consistent

Father of three, married to Renata (yes, our names rhyme). Stability, long-term thinking and zero drama on the teams I join.

## Experience

### Senior DevOps Engineer | SRE — eureciclo

May 2023 – Present · Brazil (remote)

Cross-team DevOps/SRE in a multi-cloud environment (AWS, GCP, OCI), owning infrastructure architecture, migration, operations and cost optimization for a fast-growing sustainability scale-up.

- Led multi-cloud Kubernetes replatforming: EKS/GKE to OKE, migrating MySQL/PostgreSQL with minimal downtime
- Established GitOps with Argo CD and CI/CD with Bitbucket Pipelines: faster, auditable, reversible deploys
- Built observability with Prometheus, Grafana and Alertmanager; defined SLIs/SLOs and cut MTTR
- Drove FinOps: rightsizing, reservations, cleanup and cloud provider negotiation with measurable savings
- Adopted AI/LLM-assisted engineering for debugging, log analysis and automation workflows
- Leading the team's expansion: hiring, mentoring and standardizing DevOps practices

### DevOps Consultant | SRE — Builders

Dec 2020 – May 2023 · Brazil

DevOps consultant for large enterprise clients in pharmacy (Raia Drogasil, Grupo DPSP), transportation and banking, operating complex AWS/GCP cloud-native environments.

- Designed and optimized CI/CD pipelines with GitLab CI, Bitbucket Pipelines and GitHub Actions across multiple teams
- Built and scaled Kubernetes/Docker platforms for high-traffic e-commerce and core-business workloads
- Implemented observability with Datadog, AppDynamics, ELK stack, Prometheus and Grafana
- Provisioned environments as code with Terraform and CloudFormation
- Adapted solutions across industries and stakeholders. Consulting sharpened my communication as much as my engineering.

### DevOps Engineer | SRE — FCamara Consulting & Training

Dec 2018 – Dec 2020 · São Paulo, Brazil

Core DevOps engineer for TempoTem, a high-growth startup, owning infrastructure and security decisions from the earliest stages.

- Designed scalable AWS infrastructure supporting rapid product growth
- Ran containerized workloads with Docker and Kubernetes; CI/CD with Bitbucket Pipelines
- Delivered full observability: Elasticsearch, Kibana, Prometheus, Grafana, Alertmanager and Instana
- Contributed to security and architecture decisions from day one; supported frontend delivery via Vercel

### DevOps Engineer — Concrete Solutions (Accenture Group)

Jan 2017 – Dec 2018 · São Paulo, Brazil

DevOps for major enterprise clients (SKY, Carrefour, Cielo), building automated deployment pipelines for native mobile apps in SCRUM teams.

- Built Jenkins pipelines automating Android/iOS releases end-to-end, cutting manual work and time-to-market
- Operated AWS-based infrastructure for high-demand e-commerce platforms
- Integrated APM tooling for proactive issue detection

### Site Reliability Engineer — Carrefour Brasil

Jan 2015 – Jan 2017 · São Paulo, Brazil

First SRE role, during the early days of Carrefour's e-commerce in Brazil, building the monitoring and reliability foundations.

- Implemented infrastructure and application monitoring with Zabbix and AppDynamics
- Defined reliability metrics supporting tuning and SLAs
- Automated operations with shell scripts, cron and Rundeck

### Technical Support Coordinator — Luft Solutions

Aug 2010 – Oct 2015 · Barueri, Brazil

Grew from infrastructure analyst to coordinator, leading field support teams across distribution centers in four Brazilian states for clients like Carrefour, Amazon and Louis Vuitton.

- Led regional support teams ensuring consistent IT delivery in logistics hubs
- Managed server provisioning, networking, vendors and contracts
- Bridged technical teams and logistics leadership to align infrastructure with SLAs

## Core Skills

### Containers & Orchestration

- Kubernetes (EKS, GKE, OKE, K3s, Rancher, bare-metal)
- Docker
- Helm

### Cloud

- AWS
- OCI
- GCP
- Azure (working knowledge)
- Hetzner
- DigitalOcean

### CI/CD & GitOps

- Argo CD
- Flux CD
- GitHub Actions
- GitLab CI
- Bitbucket Pipelines
- Jenkins

### Infrastructure as Code

- Terraform
- Ansible
- CloudFormation

### Observability

- Prometheus
- Grafana
- Alertmanager
- OpenTelemetry
- Loki/Tempo
- ELK/OpenSearch
- Datadog
- Zabbix

### Other

- Linux (advanced)
- FinOps
- Bash/Shell
- Python
- Kafka
- Kong API Gateway
- MySQL/PostgreSQL/MongoDB
- AI/LLM-assisted workflows

## Certifications

CNCF Kubestronaut · 5/5 Kubernetes certifications

- CKA — Certified Kubernetes Administrator (CNCF)
- CKAD — Certified Kubernetes Application Developer (CNCF)
- CKS — Certified Kubernetes Security Specialist (CNCF)
- KCNA — Kubernetes and Cloud Native Associate (CNCF)
- KCSA — Kubernetes and Cloud Native Security Associate (CNCF)
- OCI Kubernetes Specialist — Oracle
- OCI Cloud Foundations Associate — Oracle
- AWS Certified SysOps Administrator
- AWS Certified Cloud Practitioner
- AWS Certified Solutions Architect – Associate (expired)
- Microsoft AZ-900
- Cybersecurity Awareness (CAPC) — CertiProf
- ITIL — AXELOS
- Scrum Foundations — CertiProf
- ISO 20000 / ISO/IEC 27002 — EXIN

## Education

- **Analysis and Systems Development (IT)** — UNINTER — Centro Universitário Internacional (2017 – 2019)
- **General English (immersion)** — ANNE'S Language House — Canada (Dec 2023 – Feb 2024)
- **English B1 (immersion)** — International House — South Africa (Sep 2021 – Dec 2021)

## Languages

- **Portuguese** — Native
- **English** — B1/B2 — actively improving
  Two international immersion courses (Canada 2024, South Africa 2021) and daily use in distributed teams. Clear written and async communication, conversational speaking, and a real ongoing plan to reach full fluency. I'd rather be upfront about this than oversell it.

## Writing & Community

I write about DevOps, Kubernetes and self-hosting at timdevops.com.br (in Portuguese). Yes, the blog is named after the nickname:

- Free custom-domain email with Cloudflare + Gmail (2026-02)
- You don't need to pay to start building real systems (2025-08)
- Why every dev should try self-hosting (2025-08)
- The new AWS EKS Dashboard (2025-05)