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NelsonCun/README.md

Nelson Emanuel Cún Bálan

Backend Developer | Software Engineer
Guatemala · Open to opportunities in Guatemala and remote roles

LinkedIn GitHub

About me

Software developer focused on backend engineering, currently in the final semester of Computer Science and Systems Engineering at Universidad de San Carlos de Guatemala (USAC).

I have worked on end-to-end software projects involving requirements analysis, database design, backend and frontend development, cloud deployment, CI/CD, troubleshooting, and maintenance. My current work includes Zooftware, a livestock-management system developed for a company and also used as my thesis project.

Before transitioning into software engineering, I built a professional career in education. I hold a Bachelor's degree in Teaching Mathematics and Physics, and have experience as a university mathematics instructor and academic coordinator. This background has strengthened my analytical reasoning, communication, and problem-solving skills.

Technical areas

Languages

Python · Java · TypeScript · JavaScript · Go · Kotlin · SQL

Backend & APIs

Node.js · NestJS · FastAPI · Express · REST APIs · gRPC · Prisma ORM

Databases & Data

PostgreSQL · MySQL · SQL Server · Oracle · MongoDB · Redis / Valkey · ETL

DevOps, Cloud & Infrastructure

Docker · Docker Compose · Git · GitHub Actions · Linux · DigitalOcean · AWS · GCP · Kubernetes

Additional experience

React · Android / Jetpack Compose · Kafka · RabbitMQ · Grafana · Playwright · OpenCV · Prolog

These are technologies I have used in software and academic projects. My current professional focus is backend development, software engineering, databases, containers, and cloud infrastructure.

Featured projects

Zooftware — Livestock Management Platform

Role: Software Engineer / End-to-End Developer

Stack: NestJS · TypeScript · PostgreSQL · Prisma · Kotlin · Jetpack Compose · Docker · DigitalOcean

End-to-end livestock-management system developed for a company and used as my thesis project. I am responsible for requirements, architecture, database design, backend, Android client, cloud deployment, troubleshooting, and maintenance.

Applied AI Systems

Artificial Intelligence 1 — USAC

Stack: Python · FastAPI · React · PostgreSQL · Prolog · OpenCV · OCR · Playwright · Celery · Redis · Docker · Pytest

Collection of applied AI and backend systems including route inference with Prolog, a Telegram hospital bot, invoice processing with OCR/RPA, search-algorithm visualization, and an expert system for computer troubleshooting.

Operating Systems & Cloud Engineering

Operating Systems 1 — USAC

Stack: Go · Rust · Docker · Kubernetes · GCP · Kafka · RabbitMQ · Valkey · Grafana · gRPC · Locust

Distributed system work covering climate-data ingestion and processing with containerized services, message brokers, gRPC, monitoring, load testing, autoscaling, and cloud-native infrastructure.

Virtual Filesystem & Disk Storage Engine

File Management and Implementation — USAC

Stack: Go · Binary Storage · MBR/EBR · EXT2-style Filesystem · Graphviz · GitHub Actions

Systems-programming project implementing virtual disks, primary/extended/logical partitioning, binary metadata persistence, EXT2-style filesystem structures, deterministic mount state, path traversal, simulated authentication, Graphviz reports, and 18 deterministic regression tests.

Relational-to-Document Database Migration

Database Systems 2 — USAC

Stack: MySQL · MongoDB · Python · JavaScript · JSON

Data migration and transformation pipeline that exported relational football World Cup data from MySQL, transformed it into a document-oriented model, created MongoDB collections and indexes, and supported structured queries.

Routes, Vehicles & Travel Management

Data Structures — USAC

Stack: Python · Graphviz · Tkinter

Application using manually implemented data structures including B-trees, adjacency lists, queues, linked lists, and graph-based route calculations.

Current focus

  • Backend engineering, API design, and relational database design.
  • Production-oriented software with clear architecture, testing, CI/CD, and cloud deployment practices.
  • Distributed systems and responsible AI-assisted software engineering.

Education

  • Computer Science and Systems Engineering, Universidad de San Carlos de Guatemala — final semester.
  • Bachelor's Degree in Teaching Mathematics and Physics, Universidad de San Carlos de Guatemala — 2025.
  • Secondary Education Teaching Degree in Mathematics and Physics, Universidad de San Carlos de Guatemala — 2020.

Contact

Pinned Loading

  1. applied-ai-systems applied-ai-systems Public

    Applied AI and backend engineering projects with FastAPI, PostgreSQL, Redis, Celery, React, Docker, Prolog, OCR, automation, and search algorithms.

    Python

  2. operating-systems-cloud-portfolio operating-systems-cloud-portfolio Public

    Operating systems and cloud infrastructure portfolio: Linux kernel modules, Go, Rust, Docker, Kubernetes, gRPC, Kafka, RabbitMQ, Valkey, Grafana and GCP.

    Go

  3. go-virtual-filesystem go-virtual-filesystem Public

    Virtual disk and EXT2-style filesystem engine in Go with MBR/EBR partitioning, binary storage, Graphviz reports, and regression tests.

    Go