Oscar Fernando Zuniga

About Me

Backend developer with strong expertise in quality assurance, cybersecurity, and database management

Senior QA Engineer and Backend Developer with 10+ years of experience specializing in test automation, API development, and cybersecurity. Currently pursuing a Master's degree in Cybersecurity with focus on applied cryptography, penetration testing, and security assessment. Proven expertise in Python/Django, API testing frameworks, database optimization (Oracle), and DevOps practices. Self-taught professional with a passion for building secure, scalable solutions and automating complex workflows.

Professional Experience

Career journey across QA, development, and security

Senior Quality Assurance Engineer

Fortress Technology Solutions

Oct 2020 - Present

Lead quality assurance initiatives for enterprise software solutions. Design and implement comprehensive test strategies, automation frameworks using Python (Django, Flask), and API testing tools. Specialize in functional, smoke, and BDD/TDD testing. Mentor team members and establish best practices for continuous testing in agile environments.

Python/Selenium Django/Flask API Testing BDD/TDD Test Automation Smoke Testing

Business Intelligence Specialist

Cable Color Honduras

Mar 2020 - Oct 2020

Developed and maintained business intelligence solutions combining QA expertise with data analysis. Designed quality assurance processes for BI reports and dashboards. Applied computer science principles to ensure data accuracy and system reliability.

Quality Assurance Business Intelligence Computer Science Data Analysis

QA Engineer

Acklen Avenue

Oct 2017 - Mar 2020

Managed exploratory and automated testing to ensure product quality across multiple client projects. Designed and implemented test cases, debugged issues, and defined corrective actions. Developed automation frameworks using Python/Selenium and JavaScript/Mocha.

Python/Selenium JavaScript/Mocha Test Cases Debugging Agile/Scrum

Value Added Services HEAD

Tigo (Millicom)

Mar 2012 - Jan 2016

Led digital transformation initiatives and VAS strategy development. Developed VASTRIX digital tool for nationwide POS sales. Built and managed team of 100+ VAS trainers, driving digital lifestyle adoption and smartphone usage across distribution channels.

Strategy Team Leadership Digital Tools Sales Analytics

Fraud & Revenue Assurance SR Analyst

Tigo (Millicom)

Jan 2009 - Feb 2012

Designed and implemented automated control programs for revenue assurance. Performed trend analysis and behavioral pattern detection for fraud prevention. Developed process automation solutions using Oracle PL/SQL for revenue reconciliation and audit trails.

Oracle PL/SQL Fraud Detection Process Automation Data Analysis

Fraud & Revenue Assurance Supervisor

Tigo (Millicom)

Jan 2008 - Dec 2008

Conducted comprehensive audit reviews and fraud investigations. Implemented risk management frameworks and developed automated alert systems for telephony fraud detection. Ensured compliance with internal policies and industry regulations.

Auditing Risk Management Compliance

Featured Projects

Open source contributions and personal projects

CryptoVault-AES

Secure file encryption tool implementing AES-GCM encryption. Developed as part of Applied Cryptography Master's course, demonstrating practical application of cryptographic principles and secure key management.

Python AES-GCM Cryptography Security

View Code

Burp Suite Race Lab

Educational race condition attack scripts for Burp Suite laboratories. Master's Degree cybersecurity project demonstrating vulnerability exploitation techniques and secure coding practices to prevent timing attacks.

Python Burp Suite Security Testing OWASP

View Code

Django API Boilerplate

Comprehensive Django REST API boilerplate with modular testing suite. Includes unit tests, API integration tests, and UI tests using Selenium. Production-ready structure with authentication, permissions, and best practices.

Django REST API Pytest Selenium

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Flask API Setup

Lightweight Flask API starter template with best practices for building RESTful services. Includes authentication, database migrations, environment configuration, and deployment guidelines.

Flask Python REST API SQLAlchemy

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API Testing Starter

Simple API testing boilerplate with Express.js, Jest, and Supertest. Designed to help teams quickly set up automated API testing workflows with comprehensive examples and best practices.

JavaScript Jest Express.js Supertest

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Playbook

Professional E2E test suite for the Schedula app using Playwright with a Page Object Model architecture. Multi-browser coverage, rich HTML reports, and Docker-ready execution for CI/CD.

Playwright TypeScript Node.js Docker E2E Testing

View Code

Technical Skills

Expertise across development, testing, and security

Programming Languages

Python Expert

SQL / PL/SQL Expert

JavaScript Advanced

Java Proficient

Backend & Databases

Django / DRF Expert

Flask Advanced

Oracle Database Expert

PostgreSQL / MySQL Advanced

QA & Testing

Selenium / WebDriver Expert

Pytest / Jest / Mocha Expert

Postman / API Testing Expert

Test Automation Expert

Security & DevOps

Penetration Testing Advanced

Burp Suite / OWASP Advanced

Git / GitHub Expert

CI/CD Pipelines Advanced

Tools & Methodologies

Agile / Scrum Expert

Microsoft Excel / Power BI Expert

Process Automation Expert

Languages

Spanish Native

English Professional

Education

Master's Degree in Cybersecurity

Universidad Tecnológica Centroamericana (UNITEC)

Current

Advanced studies in applied cryptography, penetration testing, security assessment, and secure software development. Practical projects include AES encryption tools, race condition exploitation, and security audit frameworks.

Cryptography Penetration Testing Security Engineering

Informatic Engineering

Universidad Tecnológica Centroamericana (CEUTEC/UNITEC)

Computer Science degree with focus on software development, database management, and systems architecture. Specialized in backend development and enterprise applications.

Computer Science Backend development Database Management

About Me

Professional Experience

Senior Quality Assurance Engineer

Business Intelligence Specialist

QA Engineer

Value Added Services HEAD

Fraud & Revenue Assurance SR Analyst

Fraud & Revenue Assurance Supervisor

Featured Projects

CryptoVault-AES

Burp Suite Race Lab

Django API Boilerplate

Flask API Setup

API Testing Starter

Playbook

Technical Skills

Programming Languages

Backend & Databases

QA & Testing

Security & DevOps

Tools & Methodologies

Languages

Education

Master's Degree in Cybersecurity

Informatic Engineering

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