Skip to content
View arleujr's full-sized avatar

Block or report arleujr

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
arleujr/README.md

Arleu Júnior

Agronomy · Backend · Data

Python · FastAPI · PostgreSQL · Docker · TypeScript · Rust

Portfolio LinkedIn Email Resume

Portuguese version: README.pt-BR.md

About me

I am an Agronomy student at the Federal University of Viçosa (UFV) and a developer focused on backend systems, data, automation, and technology applied to agricultural environments.

My academic and professional background gives me direct contact with field operations, traceability, technical protocols, environmental and biological data, and real operational constraints.

I use this context to build software involving APIs, relational databases, telemetry, asynchronous processing, automation, data validation, and integration between physical systems and software.

My main stack is Python, FastAPI, SQL, and PostgreSQL, supported by Docker, automated testing, Git, REST APIs, and CI/CD.

I am especially interested in systems that connect the physical world to software, from sensors and telemetry ingestion to data processing, automation, and decision support.

Featured projects

IoT and data ecosystem connecting agricultural sensors, device firmware, telemetry infrastructure, backend services, automation, and hardware documentation.

ESP32 + Sensors
      ↓
Device Firmware
      ↓ MQTT
IoT Gateway
      ↓
PostgreSQL
      ↓
Application / Monitoring

Ecosystem components

AgriSentry Platform

Application for monitoring and automation in agricultural IoT environments.

AgriSentry Device

MicroPython firmware for ESP32 devices, sensor acquisition, MQTT telemetry, and local handling of data during connectivity interruptions.

AgriSentry IoT Gateway

Rust gateway responsible for MQTT and HTTP telemetry ingestion and PostgreSQL persistence.

Assembly Docs

Transforms a text based hardware assembly specification into validated connections, visual documentation, and test firmware for the hardware.

Technologies

MicroPython · MQTT · Rust · Actix Web · SQLx · PostgreSQL · FastAPI · Docker

Local application for ingesting academic sources, reviewing bibliographic metadata, and generating references according to UFV standards.

  • PDF, RIS, and BibTeX ingestion
  • OCR for documents without extractable text
  • Metadata validation and conflict identification
  • Human review workflow through API endpoints
  • Offline execution
  • Automated tests and OpenAPI documentation

Technologies

Python · FastAPI · React · SQLite · Pytest · OpenAPI

Local application for structuring, validating, and generating undergraduate thesis content from the template used at UFV.

  • Structured forms for thesis sections
  • Required field validation
  • Review states and error handling
  • Local document generation
  • Browser based interface

Technologies

React · Node.js · JavaScript

Other projects

Agronomic platform for organizing cotton management data, crop cycles, scouting activities, catalogs, and spatial information.

Technologies

Python · FastAPI · PostgreSQL · PostGIS · Redis · Celery · Vue 3 · TypeScript

Secret scanner built in Rust and used across my projects to help prevent API keys, tokens, and other sensitive credentials from being accidentally committed.

  • Secret and credential pattern detection
  • Entropy based analysis
  • Staged file scanning
  • Git pre commit integration
  • Machine readable reports for automation and CI/CD

Technologies

Rust · Regex · Shannon Entropy · Git Hooks · CI/CD

Technical stack

Core

Python · FastAPI · SQL · PostgreSQL · Docker · Git · REST APIs · Pytest · CI/CD

Used in projects

TypeScript · React · Vue 3 · Node.js · Rust · Actix Web · SQLx · MQTT · Redis · Celery · PostGIS · Pandas · GitHub Actions

Currently Learning

PySpark · Cloud fundamentals · Database performance · Observability

Santander Automation with n8n | Santander + DIO

Selected participant in a practical program focused on n8n, Python, APIs, Webhooks, AI assisted automation, and RPA.

GitHub languages

Languages by repository Languages by commits

Language statistics represent GitHub repository activity and are not a measure of proficiency.

Professional background

Pif Paf Alimentos | Poultry Production Intern

Worked with the field technical team in routines involving biosecurity, operational records, traceability, biological sampling, and field assessments.

Working with animal production also strengthened my ability to operate in dynamic environments where priorities can change quickly due to unexpected situations. Monitoring animals and production conditions required continuous attention, adaptability, task prioritization, and collaboration with the team to respond to operational challenges.

ADWA Cannabis | Field Operations Intern

Worked with environmental and crop variable recording, production data organization, traceability, and support for applied agronomic research.

The experience connected field activities with data organization and strengthened my interest in processes where information collected during operations must remain structured, traceable, and useful for analysis and decision making.

GeCotton UFV | Cotton Study Group

Participated in technical and organizational activities related to cotton production, with contact with researchers, professors, producers, students, and agricultural companies.

The group contributes to expanding my understanding of the cotton production chain, technical communication, and interaction between university research, producers, and the agricultural market.

Education

B.Sc. in Agronomy

Federal University of Viçosa | UFV

Contact

Portfolio · LinkedIn · Email

Pinned Loading

  1. tccBuilder tccBuilder Public

    Web app that automates TCC formatting for Agronomy students at UFV. Generates editable fields from a DOCX template, allowing faster customization and document assembly. Built with React, Express, N…

    JavaScript 1

  2. RefEngine RefEngine Public

    Local engine for academic references. Reads PDF, BibTeX, and RIS files, applies UFV 2025 catalog rules, and provides a React interface for review. Publishes validated DOCX/TXT outputs with reproduc…

    Python 1

  3. AgriSentry AgriSentry Public

    An IoT-based solution for real-time monitoring and automation in smart farming environments.

    TypeScript 1

  4. agrisentry-iot-gateway agrisentry-iot-gateway Public

    Headless IoT gateway for AgriSentry. Handles real-time MQTT communication with field devices, persists telemetry to PostgreSQL, and delivers configuration updates. Built in Rust with Actix-web and …

    Rust 1

  5. agrisentry-device agrisentry-device Public

    IoT device client for the AgriSentry ecosystem. Collects sensor data, publishes telemetry via MQTT, and applies gateway rules to control actuators in the field. Designed for smart, reliable, and h…

    Python 1