Open to freelance & B2B contracts

Platformsthatshipthemselves.

I'm Arielson Oliveira, a platform engineer with 8+ years building cloud platforms on AWS, Azure and GCP — now with AI agents in the loop.

Start a project →See the work
agent@platform — zshLIVE
0%
faster deployments
Terraform/Terragrunt framework across 16 AWS accounts
0%
faster CI builds
BuildKit, parallel execution, parameterized Docker builds
$0k
saved every year
Harbor to Amazon ECR registry migration
0k
pipeline runs / week
Azure DevOps platform for 4,000+ engineers at HP

Thenextgenerationofinfrastructureiswrittenbyengineersandagentsworkingsidebyside.Ibuildtheplatforms,pipelinesandguardrailsthatletthemshipsafely—atanyscale.

What I do for clients

Senior platform engineering, on demand.

Bring me in for a focused project or as your fractional platform team. Every engagement ships working infrastructure, documentation and a team that can run it.

AI-native platform ops

Agents that read your infra, review your code and fix incidents with you.

  • Claude Code & MCP servers for ops
  • Automated review & docs
  • Agent-assisted troubleshooting

Cloud foundations

Landing zones and multi-account setups that scale from day one.

  • Azure Landing Zones
  • AWS multi-account with Terragrunt
  • Reusable IaC modules

Kubernetes & GitOps

Production clusters delivered and reconciled from Git.

  • EKS / AKS / GKE
  • Argo CD & FluxCD
  • Custom Operators, Karpenter

CI/CD acceleration

Pipelines your developers stop waiting on.

  • GitHub Actions, GitLab CI, Azure Pipelines
  • Build caching & parallelism
  • Golden-path templates

Security & governance

Least privilege without slowing teams down.

  • Entra ID ↔ AWS IAM Identity Center
  • RBAC & Azure Policy
  • HashiCorp Vault, secret rotation

Cost optimization

Cut the cloud bill, keep the reliability.

  • Managed-service consolidation
  • Right-sizing & autoscaling
  • Observability with Grafana/Prometheus/Thanos

Selected work

Outcomes, not tickets.

A few platforms I've designed and delivered. Numbers come from production, not slides.

012026
AI
in the ops loop

Enhesa

Agent-assisted Azure platform

Landing zones, GitOps and AI agents working together.

Challenge
Platform work needs speed without trading away governance.
Solution
Operates AKS on Azure Landing Zones with FluxCD/Argo CD and custom Operators, and uses Claude Code, MCP and agents for review, docs and troubleshooting.
  • Azure
  • AKS
  • FluxCD
  • MCP
  • Claude Code
022025
90%
faster deployments

Capgemini Engineering

16-account AWS platform, provisioned in minutes

Terraform/Terragrunt framework driven by GitOps.

Challenge
Sixteen AWS accounts managed by hand-rolled, drifting infrastructure code.
Solution
Designed a layered Terraform/Terragrunt framework with GitOps workflows, so a full platform can be provisioned from a pull request.
  • Terraform
  • Terragrunt
  • AWS
  • GitOps
032025
0
minutes of downtime

Capgemini Engineering

Zero-downtime move from on-prem Kubernetes to EKS

Stateful workloads migrated with no service interruption.

Challenge
On-premise clusters limited scale and carried heavy operational overhead.
Solution
Orchestrated the migration to Amazon EKS using Velero for stateful workloads and Argo CD for automated, declarative rollouts.
  • AWS EKS
  • Velero
  • Argo CD
  • Helm
042025
70%
faster builds

Capgemini Engineering

CI builds that finish before the coffee

BuildKit, parallelism and parameterized Dockerfiles.

Challenge
Slow, duplicated Docker builds were blocking every merge.
Solution
Rebuilt pipelines around BuildKit caching and parallel stages, and collapsed Dockerfiles into parameterized templates — halving their maintenance.
  • Docker BuildKit
  • GitHub Actions
  • GitLab CI
052024
$10k
saved per year

Capgemini Engineering

Registry migration that pays for itself

Self-hosted Harbor replaced by Amazon ECR.

Challenge
A self-hosted registry cost money and on-call time.
Solution
Migrated all container images to Amazon ECR with better availability, and consolidated MongoDB into Atlas clusters over private connectivity.
  • Amazon ECR
  • MongoDB Atlas
  • PrivateLink
062022
25k
executions every week

Instituto Atlântico · HP Inc.

CI/CD platform for 4,000+ engineers

10,000 pipelines, 400 projects, one Azure DevOps platform.

Challenge
A global engineering org needed reliable, standardized build agents at scale.
Solution
Ran the enterprise Azure DevOps platform with Packer-built agent images, Terraform-managed AWS capacity and Grafana/Prometheus observability.
  • Azure DevOps
  • Packer
  • Terraform
  • Terratest
  • Grafana

Career journey

From help desk to AI-native platforms.

8+ years, two countries, one direction: automate everything that can be automated.

  1. Apr 2026 — Presentnow

    Enhesa

    Platform Engineer · Cloud, DevOps & AI · Portugal

    • Azure Landing Zones, Terraform, Terragrunt and AKS
    • GitOps delivery with FluxCD and Argo CD; custom Kubernetes Operators
    • Governance with IAM, RBAC and Azure Policy
    • Claude Code, MCP and AI agents for review, docs and troubleshooting

  2. Oct 2024 — Apr 2026

    Capgemini Engineering

    DevOps Engineer · Porto, Portugal

    • Terraform/Terragrunt framework for 16 AWS accounts — 90% faster deploys
    • 70% faster CI builds with BuildKit and parallel execution
    • Zero-downtime on-prem Kubernetes to EKS migration
    • $10k/year saved moving Harbor to Amazon ECR

  3. Mar 2023 — Oct 2024

    Next Engineering

    DevOps Engineer · Lisbon, Portugal

    • Led DevOps culture adoption across the organization
    • Azure IaC with Terraform and Terragrunt
    • Azure Pipelines and Jenkins for .NET, Kotlin and Python
    • Legacy apps containerized onto Kubernetes

  4. Sep 2021 — Mar 2023

    Instituto Atlântico · HP Inc.

    DevOps Engineer · Fortaleza, Brazil

    • Azure DevOps platform: 4,000+ users, 10,000 pipelines
    • AWS infrastructure with Terraform, Terragrunt and Packer
    • Serverless in Python and Go, tested with Terratest
    • Global teams across India, the US and Brazil

  5. Jun 2019 — Sep 2021

    Municipal Government of Sobral

    DevOps Engineer · Sobral, Brazil

    • End-to-end CI/CD with GitLab CI and Docker
    • Ansible automation — 60% less manual setup time
    • Zabbix monitoring across the infrastructure

  6. Mar 2018 — May 2019

    Municipal Government of Sobral

    IT Tech Support · Sobral, Brazil

    • Where it started: hardware, software and people

Toolbox

Fluent in the modern cloud stack.

  • Terraform
  • Terragrunt
  • Kubernetes
  • Docker
  • Argo CD
  • FluxCD
  • Helm
  • Karpenter
  • AWS
  • Azure
  • GCP
  • GitHub Actions
  • GitLab CI
  • Azure Pipelines
  • Terraform
  • Terragrunt
  • Kubernetes
  • Docker
  • Argo CD
  • FluxCD
  • Helm
  • Karpenter
  • AWS
  • Azure
  • GCP
  • GitHub Actions
  • GitLab CI
  • Azure Pipelines

Certifications

  • HashiCorp Certified: Terraform Associate (003)

    HashiCorp

    Jul 2025

  • AWS Certified Cloud Practitioner

    AWS

    Jul 2025

  • GitLab Certified Associate

    GitLab

    May 2025

Education & languages

  • Systems Analysis and Development

    Universidade de Fortaleza — UNIFOR

    2022

  • B.Sc. Accounting Sciences

    Universidade Estadual Vale do Acaraú — UVA

    2020

  • Portuguese · English

    Native · Professional — daily work with teams in the US, India and Europe

How we can work together

Simple engagements. Clear outcomes.

Freelance or B2B contract, remote-first from Portugal, overlapping with EU and US hours.

01

Platform assessment

1–2 weeks

Audit of your cloud, pipelines, security and spend. You get a prioritized roadmap with quick wins.

02

Project delivery

Fixed scope

A migration, landing zone, GitOps rollout or CI/CD overhaul — delivered end to end and documented.

03

Fractional platform team

Monthly retainer

Senior platform engineering on demand, embedded in your team, with AI-assisted ops built in.

Let's build

Have a platform to ship?

Tell me what you're building and where it hurts. We'll scope the fastest path to production together.

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