const douglas = {
pronouns: "He/Him",
location: "Rio de Janeiro, Brazil 🇧🇷",
role: "Full Stack Developer @ Intelie",
alsoAnswersTo: "Vibe Coder Fixer",
writingCodeSince: 2019,
domain: "Real-time telemetry for Oil & Gas",
stack: {
backend: ["Java", "Kotlin", "Spring Boot", "REST APIs"],
frontend: ["TypeScript", "React", "Next.js", "PWA"],
data: ["PostgreSQL", "MongoDB", "event streaming"],
ai: ["RAG", "MCP servers", "agentic workflows"],
},
education: "BSc in Software Engineering, 2024",
passions: ["Algorithms", "Clean Code", "UX/UI", "Open Source"],
funFact: "I turn coffee ☕ into code",
}; |
|
Since 2020 I've been at Intelie, on the Performance KPIs team for Oil & Gas operations — sensor data coming off drilling rigs that has to be correct and fast on the screen of the person running the operation.
|
Sensor streams turned into operational KPIs, and rig-state classification engines that run live and over historical reprocessing — same rules, both paths.
|
REST APIs with role-based authorization and per-rig configuration, message-broker microservices, and analytics pipelines feeding BI dashboards.
|
|
An E2E suite built from scratch (timezone and midnight-rollover edge cases), plus real production saves: an out-of-memory fix in a high-volume export pipeline and incident root-cause analysis.
|
My team's RAG knowledge base behind an MCP server that AI agents query, an AI patterns catalog, and AI-generated release notes wired into CI/CD.
|
How I take features: end to end — refinement with domain experts → API design → implementation → tests → docs. Named decision-maker on team ADRs and a recurring reviewer for my teammates' code.
|
Free and open mathematics platform — from early childhood to research level — fully bilingual (pt-BR / en-US), with interactive exercises, diagnostic feedback and progress kept on your own device. No account, no backend. Content-first, spec- and ADR-driven, published on every merge.
|
|
|
Book lending system on the Google Sheets API, with a full unit-test suite and coverage reporting.
|
Bilingual portfolio and technical blog — content authored in MDX, statically rendered.
|
|
Lightweight web player that streams radio stations from Rio de Janeiro, right in the browser.
|
Grab full-size images and thumbnails straight from social media links.
|
|
Manage stock over Telegram: LLMs read products from photos and voice notes and sync them to Google Sheets.
|
Offline-first PWA that puts spaced repetition on your real calendar. Built with an agentic, ticket-based workflow.
|
|
Multi-tenant platform derived from LAMAR: any client spins up their own Telegram inventory bot plus a full web panel.
|
Even solo, these ship with the same rigor: living specs & ADRs, C4 architecture, ticket-driven delivery and automated CI/CD with security scanning.
|
|
🎨 Frontend
|
⚙️ Backend & Infra
|
|
🧪 Testing & Quality
|
🤖 AI & ML
|
|
🧰 Tools |
☁️ Exploring Courses, labs and services I develop for — not production ops. |
3.7 MB |
2.7 MB |
2.3 MB |
1.5 MB |
581.9 KB |
370.0 KB |
300.4 KB |
296.5 KB |
228.0 KB |
202.8 KB |
150.3 KB |
132.1 KB |
94.3 KB |
70.2 KB |
39.7 KB |
27.9 KB |
22.9 KB |
22.2 KB |
16.4 KB |
14.2 KB |
12.5 KB |
11.7 KB |
9.6 KB |
8.0 KB |
6.5 KB |
5.0 KB |
4.8 KB |
915 B |
602 B |
44 B |
17 B |