Emanuel Araújo
ENPT

INDEPENDENT ENGINEERING PORTFOLIO

EmanuelAraújo.

Building intelligent systems at the intersection of AI, cybersecurity and engineering.

Explore my workGet in touch
01 / APERTUREINTELLIGENCE / TRUST / SYSTEMS
BRASÍLIA / BRAZILSCROLL TO EXPLORE ↓

01 / SELECTED WORK

Products in practice.

Three systems built for distinct problems, from finding a better price to running a store.

01 / Public product

Prumo

Commerce intelligence

An offer engine that turns marketplace data into deals worth sharing.

  • Python
  • PostgreSQL
  • Claude
  • Telegram
Explore the case study
Challenge
Marketplace feeds are noisy. A listed discount alone tells you little about whether a price is worth acting on.
Architecture
Marketplace adapters feed Python workers and PostgreSQL. Price history and publishing rules help filter repeated offers, while AI helps draft copy for Telegram and WhatsApp within a usage budget.
Evidence
A public Telegram channel shows the output of the publishing workflow.
Visit public product
PRUMO / PIPELINESYSTEM DIAGRAM
  1. 01MARKETPLACESOffer feeds
  2. 02PRUMO ENGINEFilter · curate · deduplicate
  3. 03DISTRIBUTIONTelegram · WhatsApp
PYTHON WORKERSPOSTGRESQL

02 / Public product

Torvya

NFC & digital experiences

Physical touchpoints that businesses can update after installation.

  • Next.js
  • Supabase
  • Cloudflare Workers
  • Vercel
Explore the case study
Challenge
A printed QR code or NFC tag should stay useful when a business changes its destination.
Architecture
Torvya Review directs customers to a review page. Torvya Connect shares digital destinations. Next.js and Supabase manage configuration, and a Cloudflare Worker resolves published redirects at the edge.
Evidence
The public product site presents both Review and Connect.
Visit public product
REVIEW + CONNECT / PRODUCT CONCEPTS

03 / Operational software

Marcos Krep’s

Point of sale & operations

A mobile-first POS that connects orders, checkout and store operations.

  • Next.js
  • TypeScript
  • Supabase
  • Vitest
Explore the case study
Challenge
A food business needs a consistent order flow across checkout, preparation and delivery.
Architecture
Next.js and Supabase support order and branch workflows. The code includes checkout, Pix payment, delivery confirmation, role-based data access and a thermal printing worker.
Evidence
Checkout and payment rules have dedicated repository tests. This case study covers implemented flows.
MAR·COSOPERATIONS
Order boardPOS / 024
New order#24
Preparing#25
Ready to deliver#26
Payment methodPix
INTERFACE STUDY · SAMPLE DATA

Also in the workshop

  • PrototypePromos

    An offer-monitoring prototype with purchase rules exercised against a simulated store.

  • Open-source forkCezar ↗

    An upstream control center I use to coordinate Claude Code, Codex and OpenCode.

  • PilotVideoFactory

    An AI-assisted audiovisual workflow using Remotion and React Three Fiber.

02 / AI ENGINEERING

How I work with agents.

I separate planning, implementation and verification so each stage has an explicit output and a handoff someone can review.

Explore my public Agent Skills
/ 01

Plan

Define scope, acceptance criteria and constraints in the issue before assigning the work.

HANDOFFIssue + acceptance criteria

03 / PROFESSIONAL PRACTICE

Engineering for the systems people rely on.

I coordinate IT in the financial cooperative sector. That work informs how I build products, from governing access to making services easier to operate.

Identity & security

IAM and identity governance with Microsoft 365, Entra ID, Active Directory, Conditional Access and MFA. Endpoint and network protection.

Infrastructure & operations

Windows Server, Linux, virtualization, VPN, SD-WAN, network segmentation and monitoring. Cloud delivery with Vercel and Cloudflare.

AI & software engineering

Agent Skills, TypeScript, Python, APIs, PostgreSQL, Docker, GitHub Actions, SharePoint and Power Automate.

IT leadership

IT coordination in the financial cooperative sector, technology planning, service prioritization and business continuity.

Education & certification

From the archive

04 / CONTACT

Let’s build something.

Have a project in AI, security or digital products? I’d like to hear what you’re working on.

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