Edgar Macías

Senior Software Engineer | Full-Stack Developer

Specialist in Secure Development (AppSec) and Scalability

7+ years of experience building and optimizing high-impact systems (UNAM), applying a 'Security by Design' approach to mitigate risks in the development lifecycle.

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Impactful Experience

Senior Software Engineer / Tech Lead

UNAM (National Autonomous University of Mexico)

2018 - Present

Technical leadership in the development of critical platforms for university management, impacting thousands of users.

Development of scalable systems managing data for over 300,000 students.

Successful migration of legacy databases with millions of records, ensuring integrity and zero downtime.

Implementation of AppSec and 'Security by Design' practices reducing vulnerabilities by 40%.

Optimization of administrative processes, reducing response times by 60%.

The Journey From Academia to Applied Security

2015

Software Engineering & Legacy Architecture

Career Start

Designed and implemented a rules engine for critical certification processes.
Ensured 100% accuracy in official document issuance.
Optimized workflows using Symfony and AngularJS.

PHPPHPUnitSymfonyAngularJS

2019

Modernization & Scaling of Critical Systems

Complexity Management

Dockerized legacy systems to prioritize operational continuity.
Refactored obsolete code, significantly reducing technical debt.
Managed high-concurrency traffic during enrollment periods.

PostgreSQLPythonDockerNext.jsNestJS

2020

Full-Stack Mobile Development (Freelance)

Tech Expansion

Developed a complete mobile app for a taxi service.
Integrated cloud backend with Google Maps API and geolocation.
Led the full cycle from architectural design to deployment.

Flutter (Dart)Cloud FirebaseNoSQLGoogle Maps API

2021

Data Migrations & Custom Tools

Technical Depth

Migrated critical database from SQL Server to PostgreSQL with zero data loss.
Developed custom ETL in PHP ensuring record integrity.
Automated validation and cleaning of millions of academic records.

PostgreSQLPythonETL CustomSQL Server

2023

Technical Leadership & Security by Design

Transition to Seniority

Led Scrum team in developing a psychological care system.
Implemented robust cryptography to guarantee sensitive data confidentiality.
Applied 'Security by Design' principles throughout the system architecture.

CriptographyScrumAppSecNode.js

2025

Specialization & Active Projects

Continuous Growth

Founded DevCybSec with interactive labs on OWASP Top 10.
Developed Mini-SAST analyzer as an automated security proof of concept.
Actively researching new vulnerabilities and defense strategies.

Go (Golang)ViteExpressAppSec Labs

Skills (T-Shaped Profile)

Backend & Core

Go (Golang)PythonPHPNestJSExpress

DevCybSec: My Commitment to Secure Development

Founder & Lead Developer

DevCybSec - Security Labs

Applied research in offensive and defensive security. Interactive labs platform (OWASP Top 10) for advanced AppSec training and secure coding.

Next.jsAppSecGamification

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Research

Full-Stack Lab Showcase

Development of a full-stack lab showcase for advanced AppSec training and secure coding.

GolangVitePostgreSQLDocker

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Research

Mini-SAST Analyzer

Development of a static analysis engine (SAST) for automated vulnerability detection in source code. Proof of concept for applied security engineering.

PythonAST ParsingSecurity Rules

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Research

Go Hexagonal Auth

Development of a hexagonal architecture for authentication and authorization.

GoGormJWTGinHexagonal ArchitectureDocker

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Competitive Programming

LeetCode Road

Competitive programming journey on LeetCode.

LeetCodeAlgorithmsData StructuresCompetitive Programming

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Activity

Ready to build secure and scalable software?

Open to new opportunities where I can contribute technical and strategic value.

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