Márcio Araújo
Available for Work
SRE / DevOps · Brazil · Remote · UTC-3
20+Years
8Skill areas
7Certs
🌍
About Me
Professional Overview
I keep mission-critical payment infrastructure reliable at scale — running PCI-DSS-compliant platforms on Azure (AKS) where reliability, observability, and automation aren't optional. Over 20+ years I've grown from the data center to cloud-native SRE, so I bridge both worlds: the discipline of traditional infrastructure and the speed of modern DevOps. What drives me is removing toil through IaC and GitOps — and running cloud not just reliably, but efficiently.
◆ What I Bring
- 20+ years bridging data center operations to cloud-native SRE
- Reliability for mission-critical, PCI-DSS payment platforms
- Automation-first: IaC, GitOps & CI/CD to eliminate toil
- Cost-aware operations with a FinOps mindset
⚡
Skills & Technologies
End-to-end expertise across the full infrastructure stack.
🎯
SRE Practices
☁️
Cloud & Platform
🐳
Containers & Orchestration
⚙️
IaC & Automation
🔄
CI/CD & GitOps
📈
Observability
🔒
Networking & Security
🔑
Identity & Access
🐧
Operating Systems
📦
Messaging & ALM
💼
Career & Experience
Professional journey
🏢
4
Companies
📅
20+
Years Experience
📈
6+
Yrs DevOps / SRE
S
Stone Co.
📍 Remote · UTC-3
Senior Site Reliability Engineer (SRE)May 2020 — Present
- Reliability for mission-critical payment-processing infrastructure on Azure (AKS) — production, DR & staging with auto-scaling clusters.
- Large hybrid estate: ~120 cloud VMs, ~900 VMware production servers, and Docker/Rancher container platforms (prod, staging, sandbox) with auto-scaling nodes.
- IaC with Terraform & Atlantis, GitOps on GitHub; CI/CD on Azure DevOps; .NET & Linux/Docker microservices.
- Observability with Datadog, New Relic & Splunk; perimeter security via Cloudflare/Azure WAF, Fortinet & F5.
- PCI-DSS-compliant environments; shared on-call rotation with war-room incident response, on and off hours.
- Monthly capacity & FinOps reviews — right-sizing and cloud cost optimization; embedded in Agile/Scrum with full reliability ownership.
V
VLT Carioca
📍 Rio de Janeiro
Senior Infrastructure AnalystJul 2019 — May 2020
- Hybrid cloud integrating on-premise (Dell blade & storage) with Microsoft Azure for critical transport services.
- Full Windows Server ecosystem — Active Directory, DNS, DHCP, RDS, DFS, GPOs, IIS — with high availability (NLB).
- Storage & backup operations and remote server management (iDRAC, RAID).
- Network & perimeter security: Fortinet firewalls, Cisco/Dell switches, VLANs, VPN, NAT & routing.
O
Oi Telecom
📍 Rio de Janeiro
Senior Systems AnalystDec 2017 — Jul 2019
- OSS/BSS systems across multi-platform environments: Solaris, HP-UX, RHEL, Oracle, Windows (+ Tomcat/IIS middleware).
- Zabbix monitoring with custom triggers and Slack/Telegram alerting; Grafana dashboards.
- Technical change management (CRQ) and deployment automation across QA/test environments with SLAs.
- ALM & DevOps tooling: HP ALM, LoadRunner, Remedy, BMC Discovery; Git & continuous deployment.
+
Earlier
📍 Brazil
15+ years in infrastructure operationsPre-2017
- Enterprise data center operations — networking (Cisco, Juniper, Fortinet) and Active Directory.
- Virtualization (VMware, Hyper-V), backup and disaster recovery for business-critical services.
🏅
Certifications & Education
Credentials & background
🏆 Certifications
- AWS Certified Cloud Practitioner
- AZ-900 — Microsoft Azure Fundamentals
- Azure Infrastructure with Terraform
- ITIL Foundation (EXIN)
- ISO/IEC 27001 — Information Security (EXIN)
- DevOps Foundation
- ISO/IEC 20000 Foundation
🎓 Education
- Postgraduate — Computer Forensics & Digital Expertise (IPOG, in progress)
- Network Technology — UniverCidade (2009)
🌐 Languages
- English — Advanced
- Portuguese — Native
🛠️
Projects & Crafts
🛠️
GitHub
Portfolio projects and open-source contributions are published on GitHub.
Visit GitHub Profile ↗✉️
Let's Connect
Get in Touch
Open to remote opportunities as SRE, DevOps, Platform or Cloud Engineer. Reach out through any channel below.