Software Engineer

Programming and Data Automation and AI.

I'm Davi Oliveira. From the Python ecosystem: APIs in FastAPI, fullstack systems in Django, data and automations with applied AI, from the first commit to the production deploy.

View projects Get in touch

Python Django FastAPI SQL PostgreSQL Data Docker Golang LLMs Automation

Python · API Data · Decisions

Projects

What I have built

Apex Acelera | Reports

PDF reports from Meta Ads data, with four analysis modes and automated KPIs.

Django PostgreSQL WeasyPrint

Code

Ecommerce Control

Multi-tenant dashboard integrating Nuvemshop and GestãoClick into one operation.

Django Ninja PostgreSQL Docker JWT

Code

Ibeize E-commerce

E-commerce integrated with GestãoClick, GoTemplate, Melhor Envio, and synchronized inventory.

NuvemShop GoTemplate GestãoClick Integração de API

View site

Data Science Projects

Collection of exploratory analyses and machine-learning models applied to real-world problems.

Python Pandas Scikit-learn TensorFlow Jupyter

Code

Python Projects

Collection of Python APIs, web applications, integrations, and automations built with sound architecture practices.

Python FastAPI Flask Django Docker

Code

Personal Portfolio

Bilingual Django portfolio with light and dark themes, search, contact, and responsive design.

Python Django PostgreSQL Deploy VPS

Code View site

JWT Order API

Order API with JWT authentication, per-user data isolation, layered architecture, and automated tests.

Flask PyJWT bcrypt SQLite Pytest

Code

JWT Secured Banking API

Banking API with JWT authentication, bcrypt password protection, layered architecture, and automated tests.

Flask PyJWT bcrypt SQLite Pytest

Code

Real-Time Chat

Real-time bidirectional messaging system built with WebSockets.

Flask-SocketIO WebSockets

Code

Pet Adoption API

Pet adoption management API structured with Clean Architecture, MVC, and separated use cases and repositories.

Flask Clean Architecture MVC Pytest

Code

Daily Diet API

CRUD API for meal tracking and automatic nutritional metrics, backed by automated tests.

Flask SQLite Pytest 95% coverage

Code

Banking System API

Banking API for customer registration, withdrawals, and statements, with business rules covered by automated tests.

Flask SQLite MVC Architecture Pytest

Code

URL Shortener API

URL shortener with click tracking, QR Code generation, and an administrative metrics dashboard.

Django REST Framework PostgreSQL Docker

Code

Skills

What I build with

Backend Python

Python (FastAPI, Django, DRF, Django Ninja) REST/OpenAPI JWT/OAuth2 ORMs and migrations asyncio Redis/Celery Clean Architecture/SOLID Pytest/TDD

Data Engineering

Advanced SQL PostgreSQL, MongoDB, and SQLite Relational/dimensional modeling ETL/ELT pandas/NumPy Data quality KPIs, CAC, ROAS, and funnel Dashboards

AI & Automation

LLMs via API and open source (Claude, OpenAI, Gemini, Hugging Face/Ollama) Structured outputs Function calling RAG/pgvector AI agents MCP APIs, webhooks, and workflows

Experience

Where I have worked

Data and AI Automation Manager

Apex Acelera

Aug 2026 to today · Remote

Structuring and managing paid traffic campaigns, tracking CAC and ROAS with continuous optimization of creatives and targeting
Consolidating scattered data into decision-making indicators, tracking sales funnel metrics
Automations and reports in Python consuming external APIs

Meta Ads, Paid Traffic, CAC, ROAS, Data, Indicators, Python, APIs, Automation

E-commerce Analyst

iBeize

Feb 2026 to Jul 2026 · Morada Nova, CE

Results analysis, experimentation, and continuous optimizations for the NuvemShop store
Storefront customization via advanced CSS/HTML/JS/GoTemplate and integration with GestãoClick ERP
DNS configuration, integration with Melhor Envio, and SKU alignment with inventory
Support for commercial actions and integration with logistics operations

NuvemShop, GestãoClick, GoTemplate, Django Ninja, Docker, KPIs, ROI, DNS, Melhor Envio

Administrative Assistant

Hiper Morada Nova

2021 to 2025 · Morada Nova, CE

Managed the complete inbound and outbound NF-e cycle through SysPDV, ensuring correct issuance, tax verification, and daily fiscal compliance.
Developed and implemented automated Excel dashboards, turning raw data into business insights.
Automated administrative analyses and reports, improving accuracy and operational efficiency.
Provided technical support for systems and equipment, ensuring the operational continuity of SysPDV.

Excel, Dashboards, Report Automation, SysPDV, Technical Support

Young Apprentice

Betânia Lácteos

2020 to 2021 · Morada Nova, CE

Organized fiscal documentation and administrative spreadsheets, improving data control.
Developed attention to detail and accuracy in administrative records.

Tax Documentation, Administrative Spreadsheets, Data Control

Intern

Prisma Informática

2017 · Morada Nova, CE

Started working with web development (HTML5, CSS3, and JavaScript), understanding front-end and back-end integration.
Provided technical support and customer service, strengthening communication and problem-solving skills.

Programming Logic, Technical Support, Customer Service

Education

Education and certifications

Bachelor's Degree in Software Engineering

UNOPAR, Universidade Norte do Paraná

2022 to 2025 · Completed

Information Systems

UFC, Federal University of Ceará

2018 to 2019 · Incomplete

Technical Degree in Informatics

EEEP Osmira Eduardo de Castro

2015 to 2017 · Completed

Certifications

NoSQL with MongoDB Rocketseat · 6h

JWT Authentication and Security Rocketseat · 7h

Logic Master: programming logic and algorithms with Python PyCodeBR Treinamentos · 5h

Build & Automate Immersion: development and automation with AI Rocketseat · 5h

Complete Python 3 Curso em Vídeo · 80h

Python Fundamentals Rocketseat · 10h

Exploring Flask Rocketseat · 10h

Code Design: SOLID and Testing Rocketseat · 6h

Software Architecture and MVC Pattern Rocketseat · 10h

Contact

Let's talk

Open to roles and to project work: APIs in Python, automations with AI and data analysis. I reply within one business day.

Email davioliveiraes7@gmail.com LinkedIn linkedin.com/in/davioliveiraes GitHub github.com/davioliveiraes Location Morada Nova, CE, Brazil