Principal Software Engineer and Consultant with 19+ years turning hard requirements into reliable backend systems, web products, and AI-enabled automation. Ruby on Rails, Python, TypeScript. Remote from Salvador, Brazil, for clients across the Americas and Europe.

See the work and the full story at mauriciovieira.net ->

I design and ship full-lifecycle software, then automate the parts that used to need a human. My favorite success metric is "fewer manual steps."

• Backend and architecture - APIs, distributed systems, data pipelines, legacy modernization
• AI-enabled products - LLM integrations, RAG, internal copilots, and workflow automation that quietly runs in the background
• Full-lifecycle delivery - design, build, test, ship; Certified Scrum Master and Product Owner

A few systems I have built and shipped, in-house and as a consultant. More on mauriciovieira.net.

• DAWN - decentralized ISP operating stack: customer dashboard, APIs, and workers on Kubernetes, a Shopify Hydrogen storefront from scratch, network automation in Rust (Nautobot, OpenWiFi, and MikroTik integrations), and epoch-aware reward logic.
• Andrena - platform modernization across billing, onboarding, and provisioning: SOC2-aligned 2FA, GitLab to GitHub Actions migration, automated Stripe flows, and Nautobot integration.
• Smartly.io - customer health dashboard surfacing account signals for the team.
• GoCo.io - billing proration logic for plan and headcount changes.

I am open to select projects and consulting, and to the right full-time role.

• Hiring? I own systems end to end and level up the teams around them -> LinkedIn
• Need to ship something? I scope fast and deliver through my consultancy -> omnicode.solutions
• Prefer to chat? -> WhatsApp

Start here: mauriciovieira.net

_{Coding since 1999. Web scraping since 2005, before it was cool.}