🛠️ Professional Experience and Project Development

I present a professional career that combines the discipline of formal roles within companies with the initiative and dynamism of entrepreneurial projects, demonstrating versatility, commitment, and a comprehensive ability to face technological challenges.

💼 Formal Work and Key Collaborations

This section details experience in a corporate environment, focused on applying methodologies and collaborating in teams.

Full-Stack Developer – Synergo Comunicación Alternativa (Grupo Redes Humanas)

(2020 – Present)

Role focused on the development, maintenance, and functional validation of critical systems, with key contributions both technically and through informal coordination.

Requirements and Time Management: Direct communication with end users to gather needs, translate them into technical requirements, and estimate development timelines.
Functional Validation: Frequently responsible for validating that developments met business objectives before release.
Team Collaboration: Individual and pair programming, with cross-code reviews. Frequently explained implementations to teammates and reviewed their work to optimize quality and efficiency.
Technical Reference and Informal Coordination: As the most senior team member, I naturally assumed a role of guide and technical reference. On multiple occasions, I became the go-to person for solving problems, even for developments I had not directly implemented.
Technological Environment: Development with Laravel, Angular (2 to 19), MySQL/PostgreSQL. Work with servers deployed on Google Cloud Platform (virtual instances) and in-house infrastructure.

🚀 Key Achievements

⚡ Critical Query Optimization:
Replaced inefficient ApiHandler queries with optimized Laravel ORM queries.
→ Result: Reduced response times from 15s to 2–3s and result payloads from 15-20MB to 1.2MB.
→ Impact: Eliminated server saturation and enabled seamless remote work.
🎯 Hiring Workflow Automation:
Designed and implemented a candidate self-service portal, removing a bottleneck in initial data collection.
→ Impact: 20% reduction in manual management time for data and documents.
✅ Automatic System Integration:
Implemented automatic data and document transfer between the candidate portal and the internal hiring platform.
→ Impact: 30% reduction in manual data entry for HR and Psychology teams.
💾 Centralized Document Management System:
Documents uploaded by candidates were reused across multiple processes, eliminating duplication and improving efficiency.
📊 Real-Time Reporting:
Creation of audit reports, monitoring of psychologists/recruiters, and hiring control with real-time data, complementing the BI that was updated weekly.
📂 Mass Excel Upload:
Feature that registered dozens of candidates in seconds, saving hours of work during job fairs and corporate visits.
📡 Automated Medical Exams:
Developed a module to schedule and manage candidate medical exams.
→ Impact: 50% time savings for the medical area and cost control in accounting.
🏥 Leave/Disability Management:
Comprehensive module for registering, validating, and tracking leaves with automated notification logic.
→ Impact: Eliminated unnecessary payments due to delays and saved costs by eliminating external providers.
🧾 Medical Case Module:
Registry and tracking of critical medical cases, ensuring documentation traceability and reducing legal risks.
🗂️ Equipment Inventory:
Company asset control system (serials, brands, usage history).
→ Impact: Improved planning for purchases and replacements, plus asset control.
📅 Attendance Calendar (Home/Office):
Simple system to register remote vs. on-site work, improving internal personnel control.
📬 Notification Automation:
Automatic email notifications across multiple modules (hiring, terminations, document expirations, etc.).
📲 Multi-Channel Hiring Notifications:
Integration of email and WhatsApp (Twilio) notifications at the end of hiring processes, delivering documents such as contracts and annexes.
📝 Automatic Onboarding Orders:
Automatic PDF generation of hiring conditions from forms, saving recruiters’ time.
🏢 Internal Requests System (Support and Development):
Development: requirement and bug tracking.
IT Support: ticket control (printers, PCs, passwords).
🤝 Integration for Partner Company:
Adapted backend and frontend so a partner company could use the same platform in another business line.
☁️ Hybrid Migration to GCS:
Designed a hybrid storage system (instance + Google Cloud Storage), migrating 1TB of files without data loss.
→ Impact: 15–20% cost savings and greater storage security.
🧮 Mass Generation from Payroll:
Automated process to register thousands of hires in bulk (with requisitions, operations, and contracts) from a payroll-exported Excel.
📑 Mandatory Document Management:
Developed dynamic rules to define mandatory documents depending on job or company, ensuring compliance.
🖨️ Mass PDF Generation:
Functionality to generate batches of key documents (Resumes, ID cards, affiliations, certificates).
🧩 Payroll System in FastAPI:
Initial design of architecture and database for a new SME payroll system with hexagonal architecture and vertical slice patterns, using Docker.
🔄 Angular CLI Migration (v2 → v19)
Part of the team that tackled the full migration of a legacy Angular CLI v2 system to Angular 19.
The leap required a deep rewrite due to radical changes in project structure and dependencies, practically starting from scratch.
Contributions:
- Refactored multiple critical modules and components.
- Updated and ensured compatibility of key dependencies.
- Restructured build system, configurations, and environments.
- Validated functionality with end users to guarantee continuity in sensitive processes.
  Result: Achieved tangible progress and improved maintainability, although the project was canceled by management before production deployment.
  👉 This challenge gave me solid experience in legacy migrations, handling over 10 years of technical debt, and solving incompatibilities in large-scale projects.
🧪 Modernization Initiative: Lumen/Laravel 5.4 → 11
Independently updated a Lumen/Laravel 5.4 legacy project to version 11, initially focusing on the login module and a hiring process view.
Although not an official requirement, I performed this in parallel to assigned tasks, testing backend compatibility with the frontend in a local environment.
Contributions and learnings:
- Resolved code and dependency incompatibilities.
- Migrated authentication and middleware to modern Laravel standards.
- Adapted views and controllers to the new framework.
- Validated full login and hiring flow in Angular with the updated backend.
  Result: While not deployed in production, the system ran locally with the updated frontend, proving the feasibility of migrating a critical platform to modern Laravel versions without losing functionality.

👉 This challenge provided practical experience in legacy framework migrations, handling major framework core changes, and validating compatibility with modern front-end applications.

🚀 Co-founder and Lead Developer – Vit Sensors

(2022 – Project in maintenance stage)

This section highlights my initiative, technical leadership, and end-to-end delivery capacity. The project is now in a stable and automated phase, requiring far less intensive effort than the initial stage.

Full-stack/backend development project focused on sensor management and agricultural process digitalization, with a focus on scalability and resource optimization.

Main Responsibilities

Technical Leadership: Defined architecture and strategic platform decisions.
Backend Development: Implemented APIs in Spring Boot and migrated logic from earlier versions.
Data Management: Migrated data from poorly structured DynamoDB (NoSQL) to optimized relational AWS RDS.
Started from Functional System: Took a first version of the platform (to visualize sensor measurements) and expanded it by adding administration modules for sensors, users, crops.
Frontend Development: Updated platform from React 2020 version to the latest (React 19).
AWS Infrastructure: Configured deployments with Elastic Beanstalk, Amplify, and Route 53.
Feature Improvements: Integrated automatic email alerts, scheduled tasks, and GPS-based sensor data storage.
Teamwork: Mentored interns and reviewed technical contributions for platform evolution.

Key Technical Achievements

Optimized sensor data write latency from ~3 seconds to 300–400 ms (85% improvement), ensuring backend stability under load.
Implemented asynchronous automatic alerts and scheduled tasks for recurring calculations.
Updated React to v19, ensuring modern infrastructure compatibility and improving maintainability.
Identified infrastructure optimization: platform could operate on a small instance without load balancer, configuring SSL certificates in AWS and achieving ~15% monthly cost savings.
Led technical decisions in the transition to RDS, ensuring platform stability and scalability.

✅ Approach to Next Role

My dual experience provides both corporate discipline and ownership. Entrepreneurship is the best proof of my self-motivation, technical leadership, and ability to deliver results end-to-end; skills I will fully apply to team challenges and company objectives.

🧠 Technical Foundations and Core Development

This section highlights my experience in developing systems under resource constraints, a fundamental pillar for understanding code optimization.

Embedded Systems Development (C/C++)

(2016 - 2020)

Initial experience focused on developing firmware and control applications, in both academic university projects and paid assignments, proving the ability to apply knowledge practically.

Languages: C and C++ (efficiency-oriented and direct hardware control).
Platforms: Development with microcontrollers ([STM32, Arduino, PIC, Texas Instruments, Cypress]) and bare-metal systems.
Focus on Optimization: Practice in writing efficient code for limited memory and processing environments.

Relation to Current Role: This foundation enables me to design Spring Boot systems with greater awareness of code efficiency, resource management, and overall application performance.