Douglas FernandesBuild 2026.4
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Douglas Fernandes
Full-stack developer & QA
01Index
Rio Grande do Norte, Brazil
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I am a full-stack developer and a QA analyst. I build platforms with Django and Next.js, write the tests that keep them releasable, and take them through to production. Scroll down through the layers I work in.

Frontend
Backend
Data
Platform
Infra
Tests
Depth0000Verified 0/6
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Full stack. I am a full-stack developer and a QA analyst. I build platforms with Django and Next.js, write the tests that keep them releasable, and take them through to production. Scroll down through the layers I work in.

  • Layer 01, Frontend: Next.js, React, TypeScript, CSS, HTML, Angular.js, javascript
  • Layer 02, Backend: Django, DRF, Python, REST, fastapi
  • Layer 03, Data: PostgreSQL, MySQL, SQL, Migrations
  • Layer 04, Platform: RabbitMQ, Kong, Keycloak, Grafana, Prometheus
  • Layer 05, Infra: Docker, VPS, Cloudflare R2, AWS / GCP, linux
  • Layer 06, Tests: Playwright, Pytest, E2E, Integration, Exploratory, MRL
02ProfileI build and I test

Most teams split building from proving. I hold both ends, and that is why the things I ship tend to stay shipped.

Role
Full-Stack Developer & QA Analyst at NADIC / IFRN
Experience
QA since 2024, full-stack since 2025
Focus
Multi-tenant SaaS, panels and payment integrations
Freelance
Three platforms delivered, all in production
Study
Systems Analysis & Development (Technologist) at IFRN
English
B2, certified by EF SET
Base
Rio Grande do Norte, Brazil (UTC−3)
Projects shipped04 shipped

Patient-facing platform for an international healthtech startup. I ship the features and I write the tests that keep the product releasable every sprint, under restricted repository access and recurring code audits.

Next.jsDjango RESTPostgreSQLDockerMulti-tenantAWS

Projects shipped

Healthtech SaaS, 2024 →

Patient-facing platform for an international healthtech startup. I ship the features and I write the tests that keep the product releasable every sprint, under restricted repository access and recurring code audits.

Next.js, Django REST, PostgreSQL, Docker, Multi-tenant, AWS

Summerpass, 2026

Event management and ticket sales, with five levels of access: admin, producer, customer, check-in agent and usher. Venue floor-plan upload drives sectioned tickets; check-in runs on QR. Financial dashboards per producer, Asaas and Mercado Pago on the payment side.

Next.js, Django REST, Asaas, Mercado Pago, Google Maps

TicketFace, 2026

Event ticketing where the gate is the hard part. Guests check in by facial recognition instead of a scanned code, and thermal printers issue passes at the door for anyone buying on the night. Event setup, sales and access control sit behind that.

Next.js, Django REST, PostgreSQL, VPS, Facial recognition, Thermal printing

StudioRAW, 2026

Multi-tenant SaaS for photography studios. One panel for clients, syncable calendars (Google and Apple) and galleries on Cloudflare R2, plus the automation around it: email notifications, digitally signed contracts through Autentique, PIX charges through Asaas.

Next.js, Django REST, PostgreSQL, Cloudflare R2, Docker

[ 2023 to now, what I do ]

Practice

  • Build
  • Test
  • Ship
  • Interface
  • API
  • Data
  • Infra
  • Review
  • Automate
  • Deploy
  • Debug
  • Document
  • Refactor
  • Verify
05CertificationsVerified training
06ContactReply within one business day

Say hi

© 2026 Douglas Fernandes Rio Grande do Norte, Brazil
6 layers · 0 failing Built by hand