Software Engineer
Dexter Fernandez
I'm a software engineer who builds the tools businesses use every day: automations, data systems, websites, and mobile and desktop apps. My computer engineering background means I'm comfortable when a project has to connect to a database, a camera or other hardware. Tell me what you need and I'll tell you how I'd build it.
Available for freelance projects
BS Computer Engineering, 2025
Services
What I can build for you
Workflow automation
Scheduled n8n workflows that pull data from an API or a website and send it to Google Sheets or a database such as PostgreSQL, with health checks so bad results don't get saved.
Data collection tools
Scrapers and pipelines that collect, filter, score and export data, such as brands to review. See my Meta ads research tool below.
AI features
Add AI to your system through language-model APIs, such as automated recommendations based on your data.
Websites
Responsive websites for businesses and events, deployed to Vercel and connected to your own domain.
Mobile app MVPs
Flutter MVPs for Android and iOS with QR scanning, camera features, and offline support. I build and test for both platforms. I can hand over Android builds directly; installing an iOS build or publishing it to the App Store requires your Apple Developer account.
Desktop and database systems
Windows applications built with C# or Visual Basic on .NET, backed by SQL Server or Oracle.
Projects
Things I’ve Built
Skills
What I work with
Languages
Python, JavaScript, C#, Visual Basic, Dart, SQL, C/C++ (Arduino)
Web and mobile
Flutter, PHP, HTML/CSS, responsive UI design
Data
SQL Server, Oracle Database, MySQL, PostgreSQL (Supabase), Microsoft Access
Reporting
Excel export, Looker Studio (basic), RDLC reports (basic)
Automation
Self-hosted n8n workflows, web scraping and data pipelines, REST APIs, scheduled jobs, Google Sheets integration
AI and vision
OpenCV, MediaPipe gesture recognition, facial emotion recognition, TensorFlow Lite, LLM APIs, prompt engineering
Tools
Git, GitHub, Visual Studio, VS Code, Codemagic (cloud builds), Linux (Debian on Raspberry Pi), Windows command line, Vercel
Hardware
Arduino, Raspberry Pi, PySerial, RFID (MFRC522), Blynk IoT, USB camera and QR integration
Practice
System architecture and flowcharting, application lifecycle management, adapting to unfamiliar codebases, AI-assisted development
Experience
Where I've worked
Freelance Software Engineer
KodoGen Security Systems · July 2025 to present
I started by providing on-site technical support and service documentation for client deployments. As the work grew, I became the lead technical resource for KodoGen. I built an offline-first Flutter MVP for QR-based hardware tracking and modernized the company's Windows HR system by migrating its database from MS Access to SQL Server Express and refactoring its VB.NET codebase.
Full-Stack Developer Intern
Continental Autonomous Mobility Philippines, Inc. · Quality - Analysis Center · October 2024 to March 2025
During my internship in the Quality - Analysis Center, I contributed to an internal booking and equipment system. The work progressed from system design and flowcharts into development. I built login and sign-up forms, a custom annual calendar, an attachment manager that transferred selected files to the department FTP server, and Oracle-backed Equipment Registration. I worked in C# from October through December 2024, then switched to Visual Basic in January 2025.
TESDA · NC II — Computer Systems Servicing
Issued June 2025 · Valid until June 2030READ CERTIFICATION DETAILS
National Certificate II from the Technical Education and Skills Development Authority, earned through competency assessment. It covers installing and configuring computer systems, setting up computer networks and servers, and maintaining and repairing computer systems and networks.
Contact
Ready to build something?
Tell me what you need built, what data or tools you already have, and when you need it. I'll get back to you with how I'd approach it.
dexterfernandez.dev@gmail.com