10/30/2026 updated

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Senior SRE & Cloud Architect | AWS, GCP, Kubernetes, Terraform | 20+ years

Porto, Portugal
Only remote
BSc Electrical Engineering, UFRJ (1996)
Porto, Portugal
Only remote
BSc Electrical Engineering, UFRJ (1996)

Profile attachments

Marcelo_Moreira_CV_Toptal.pdf

About me

Senior SRE and cloud architect with 20+ years. Led on-prem-to-AWS migrations (Shell), EKS re-architecture (Colgate), and run reliability for a Swiss fintech. AWS/GCP, Kubernetes, Terraform, SLO-based observability, LLM incident agents. 100% remote from Portugal, B2B via my EU company.

Argo CDHelmKubernetes SecurityAmazon Web ServicesAmazon Elastic Compute CloudCloud EngineeringLinuxDevOpsElasticsearchPython (Programming Language)PostgreSQLAnsiblePrometheusDatadogAWS CDKGoogle CloudGrafanaInfrastructure as Code (IaC)KubernetesCloud MigrationCloudwatchTerraformJenkins
Cloud Architecture & Migration
Expertise in cloud migration and modernization on AWS and GCP, covering lift-and-shift approaches, re-platforming, low-downtime cutovers, EKS/GKE design, network policies, IRSA/Workload Identity, multi-AZ failover, and Helm-based deployments.

Reliability & Observability Engineering
Deep knowledge of SLI/SLO frameworks, error budgets, burn-rate alerting, and observability tooling including Datadog, New Relic, Prometheus, Grafana, and Elasticsearch for incident response and platform reliability.

Infrastructure as Code & CI/CD
Proficiency in Terraform, Ansible, AWS CDK (Python), GitHub Actions, and Jenkins for building repeatable, automated infrastructure pipelines and containerized environments with Kubernetes, Helm, Docker, and Argo CD.

AI for Operations (AIOps)
Application of LLM agents for incident investigation using LangGraph, RAG pipelines, BGE-M3 embeddings, cross-encoder reranking, pgvector, and eval-driven development with MCP and Ollama/LM Studio.

Data Layer Operations
Management and performance tuning of HA MySQL, PostgreSQL, MongoDB, Oracle (PL/SQL), Kafka, and RabbitMQ, including WORM-compliant backup pipelines for regulated environments.

Kubernetes Platform Engineering
Design and operation of Kubernetes estates on GCP and AWS, including cluster topology, out-of-band access, Terraform/Ansible provisioning, and security essentials (LFS260 certified).

Programming & Scripting Languages
Practical use of Python, Bash, SQL, PL/SQL, and Java for automation, infrastructure tooling, and backend development across cloud and on-premises environments.

Database & Storage Technologies
Experience with AWS RDS, S3, CloudWatch, and GCP Cloud SQL, Cloud Logging/Monitoring, alongside Oracle, MySQL, PostgreSQL, and MongoDB for enterprise-grade data management.

Networking & Security
Configuration of ALB/NLB, VPC, IAM, WAF, Lambda, and network policies for internal/external traffic segregation, workload identity, and compliance-driven security architectures.

Experience

Professional experience10+ years
Freelancer since2020

Languages

EnglishFluentPortugueseNative speaker

Project history

Independent Consultant - RAG Assistant for Customer Service

Sky/Seliga loyalty programme (independent consulting)
Delivered a production retrieval-augmented assistant over proprietary programme documentation for call-centre agents, handling thousands of queries per month with multilingual embeddings and observability throughout.

LLM Incident-Investigation Agent / Senior SRE & Cloud Architect

Bexio (Swiss fintech SaaS)
Designed and shipped a LangGraph agent for internal SRE tooling on GCP and AWS that gathers logs, metrics, SLO state, Cloud Run releases and feature-flag changes for each alert and writes a structured triage report. Implemented two-stage retrieval over runbooks with regression eval suite. Also responsible for regulated platform reliability: Kubernetes as common runtime across GCP and AWS, WORM-compliant backup pipelines, HA MySQL and MongoDB tuning on high-throughput paths alongside Kafka.

SRE Lead & Senior Architect

Wunderman Thompson Commerce (Selfridges, DFS, Colgate, Shell, Costa)
Set up and led a new SRE function (~20 engineers) for a headless commerce platform on GKE (Adobe Experience Manager + IBM Commerce) serving Selfridges, DFS, Colgate and Sherwin-Williams: on-call, incident handling and SLI/SLO frameworks with New Relic dashboards tied to client objectives. Led the migration of Shell services from on-premises to Kubernetes on AWS (EKS). Supported Colgate's platform on AWS. For Costa Coffee, codified AWS infrastructure in AWS CDK (Python).

SRE Consultant

Galp (energy)
Designed and implemented CI/CD pipelines for omni-channel systems and supported the move of legacy services to containers.

Founder & CTO

mm12.com.br
Built and ran loyalty and sales-intelligence platforms for energy, agriculture and telecom clients. Migrated the company to AWS with Terraform, Jenkins and Ansible. Led a Java ERP on Apache OFBiz. Company was acquired in 2016.

Developer to Software Architect, Oracle ecosystem

Oracle, TV Globo, Vale
Progressed from developer to software architect within the Oracle ecosystem, working with clients including Oracle, TV Globo, and Vale.

Earlier roles

Xerox, GE Aircraft Engines Celma, Petrobras
Early career positions at Xerox, GE Aircraft Engines Celma, and Petrobras.

Certificates

LFS260 – Kubernetes Security Essentials

The Linux Foundation

2023

AWS Certified DevOps Engineer – Professional

Amazon Web Services

2021

AWS Certified Solutions Architect – Professional

Amazon Web Services

2020


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