INDEPENDENT ENGINEER. PRODUCTION MINDSET.

Built for
production.
Ready for next.

I’m Stephano. I design platforms, automate delivery, and keep production running — from cloud infrastructure to AI systems.

Platform Engineering / DevOps / SRE / MLOps

Based in Berlin. Building across borders.
CLOUD → PLATFORM → INTELLIGENCE

ENGINEERING EXPERIENCE AT

ai|cousticsVolkswagenDFS Deutsche FlugsicherungSignavionow part of SAP

01 /WHAT I BRING

Build it well.
Keep it running.

Cloud architecture, deployment automation, and the work of keeping services healthy. I build and operate the platform, whether it runs your core product or your AI.

01

Platform Engineering

A foundation your team can build on.

Build a Kubernetes platform with repeatable environments, self-service delivery, and infrastructure your team can change with confidence.

  • Kubernetes & internal developer platforms
  • Cloud architecture & infrastructure as code
  • GitOps & developer self-service
KUBERNETES / TERRAFORM / GO
02

DevOps & SRE

Ship with confidence. Sleep better.

Release pipelines, service-level objectives, observability, and incident response. I build the delivery workflows and operating practices that keep software shipping and services running.

  • CI/CD & release automation
  • Observability, SLOs & incident response
  • Cloud migrations & operational resilience
AWS / AZURE / PROMETHEUS
03 / AI

MLOps & AI Platforms

From promising model to production AI.

Put trained models and AI workflows on infrastructure you can operate. Model serving, GPU capacity, release pipelines, and the controls around AI agents.

  • Model serving & GPU infrastructure
  • Model pipelines & progressive rollout
  • AI observability & agent security
EKS / PYTHON / GPU COMPUTE

DEVOPS, SRE & PRODUCTION AI

From cloud
foundations to
production AI.

Production AI depends on the same disciplines as any dependable service: sound architecture, repeatable releases, capacity planning, and incident response. I bring that DevOps and SRE experience to model serving, GPU infrastructure, and AI tooling.

See the ai-coustics work
FROM COMMIT TO PRODUCTION[ 01 → 04 ]
  1. 01

    Version the change

    Code, infrastructure, model artifacts.

  2. 02

    Validate the release

    Tests, security checks, performance.

  3. 03

    Roll out with control

    Canary traffic. Defined rollback.

  4. 04

    Operate with visibility

    SLOs, service health, inference signals.

02 /SELECTED WORK

Built. Shipped.
Kept running.

From AI startups to national infrastructure. A few places where the engineering has to hold up.

01
ai-coustics

Production AI, built to keep running.

AI / REAL-TIME AUDIO
PLATFORM, DEVOPS & AI ENGINEERING

Real-time speech enhancement leaves little room for slow inference or interrupted service. I built and operated the platform behind it, spanning cloud architecture, Kubernetes, release engineering, and reliability.

I kept production serving through releases and infrastructure changes without downtime. I designed GitHub Actions workflows for reviewed, repeatable delivery, built an AI harness and custom Kubernetes tooling, and handled GPU capacity, model rollout, and observability.

KubernetesGitHub ActionsAI HarnessGPUSRE
Production AIArchitecture, delivery & reliability

Model and service releases without interrupting production, backed by controlled rollouts, clear rollback paths, and visibility into the running systems.

02
Volkswagen

A small team. A platform for millions.

AUTOMOTIVE / CONNECTED VEHICLES
PLATFORM ARCHITECTURE & SRE

As a core engineer in a small team, I architected and implemented Volkswagen’s Kubernetes and container orchestration platform across AWS and Azure, working through Storm Reply.

My work covered the entire platform: cloud foundations, cluster architecture, deployment automation, and operations across dozens of clusters and 500–1,000 autoscaled nodes. I also owned SRE, from SLOs and on-call to incident response, critical etcd fixes, and upstream contributions to WeaveNet CNI.

KubernetesAWSAzureSREFlux
3M+Vehicles supported by the platform

Infrastructure supporting 200+ applications and more than 3 million connected vehicles.

03
DFS

Automation behind critical operations.

AVIATION / REGULATED INFRASTRUCTURE
INFRASTRUCTURE & PLATFORM ENGINEERING

Germany’s national air navigation service provider. A cloud and Kubernetes platform used by teams running flight control systems, airport tower systems, and operations.

I delivered automated infrastructure across private-cloud and data-center environments: provisioning and managing VMs, building and bootstrapping Kubernetes clusters, and connecting their lifecycle through Terraform, Ansible, and GitLab CI. Changes followed reviewed pipelines, clear environment boundaries, and controlled promotion into production.

KubernetesTerraformAnsibleVMwareGitLab CI
Critical systemsControlled, reproducible delivery

Infrastructure delivery under regulated-industry requirements, with change control and a defined promotion path.

04
Signavio

One platform. Three continents.

SAAS / GLOBAL PLATFORM
PLATFORM ENGINEERING & SRE

A growing SaaS company, later acquired by SAP. A small infrastructure team supporting customer onboarding across North America, Europe, and Asia.

Introduced and ran Kubernetes across AWS and Azure, with 500+ nodes. Built a ChatOps tool for self-service deployments, later open-sourced and adopted by other companies. Established observability, GitOps, and SRE practices.

KubernetesAWSAzureChatOpsTerraform
500+Kubernetes nodes across three continents

A global Kubernetes platform and a self-service path for engineering teams to ship.

Selected experience across freelance and employed roles. Volkswagen engagement through Storm Reply.

BEYOND INFRASTRUCTURE

AgentShieldAI SECURITY

My security scanner for AI agent configurations and CI/CD pipelines. Written in Go, with 70+ rules covering agent configs, MCP, prompt injection, and the software supply chain.

Ask about AgentShield

03 /THE ENGINEER BEHIND THE PLATFORM

Hi, I’m Stephano.
I stay close
to the system.

STEPHANO ZANZIN FERREIRA
BERLIN, DE / WORKING GLOBALLY

Building systems since 2006. Still hands-on.

I started with operating systems and network appliances. Since then, I’ve written backend services, built Kubernetes platforms, and taken the call when production broke. That experience shapes how I build cloud platforms and production AI systems.

I’m an independent engineer. I take responsibility for the architecture, the code, and the day-to-day operation — and make sure your team can own what we build.

Some problems call for Go or Python. Others need a better deployment workflow, a clearer SLO, or less infrastructure. I start with the problem.

2006

Building systems since

15+

Years of production ownership

3M+

Vehicles on the VW platform

3

Continents in the Signavio platform

04 /WORKING TOGETHER

An engineer
on your side.

I work in your codebase, alongside your engineers, and take changes through to production. Architecture decisions and operational responsibility stay connected.

01

Understand the real problem.

We map the system, the bottlenecks, and what success looks like. You get a clear scope and an honest technical assessment.

02

Build alongside your team.

Changes are reviewed, tested, and rolled out in steps your team can follow. You see the work in your codebase and the results in your environment.

03

Leave a stronger platform.

Tested systems, useful documentation, and knowledge that stays with your team. Continued support when you need it.

Available for remote engagements worldwide.

Before we start.

Do you work remotely?

Yes. I’m available for remote engagements worldwide. Based in Berlin, I agree on practical meeting windows and collaboration hours with each team. English is my main working language; I also speak fluent Portuguese and Spanish, and intermediate German.

Can you help take an AI model into production?

Yes. My focus is the platform around your model: packaging and versioning, inference serving, GPU scheduling, deployment pipelines, progressive rollout, and observability. I work with your ML engineers so the model becomes a service the rest of the business can depend on.

What does an engagement look like?

It can be a focused infrastructure project or an ongoing embedded engagement. We agree on scope, ownership, availability, and commercial terms after discussing your needs. I work directly with your team and write the code, not just the recommendations.

How do we get started?

Email contact@szfs.eu with a few lines about your platform, your biggest bottleneck, and your timeline. We’ll discuss the situation, check whether I’m the right fit, and define a useful first step.

GOOD SYSTEMS START WITH A CONVERSATION

What are you
building next?

A platform to build. Releases to untangle. Production to stabilize. Or an AI system ready for real traffic. Tell me what you’re working on.

Start a conversation