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Dondon-Herrera/README.md

Hi ๐Ÿ‘‹, I'm Dondon Reyes Herrera

Senior Software Engineer | C#/.NET โ€ข Java โ€ข Azure โ€ข AI Engineering โ€ข Distributed Systems

Building scalable backend platforms, cloud-native applications, and AI-powered systems designed for performance, reliability, and real-world impact.


๐Ÿš€ About Me

  • ๐Ÿ’ป Senior Software Engineer with 7+ years of experience in backend engineering, distributed systems, cloud-native architecture, and enterprise integrations.
  • ๐Ÿง  Specialized in C#, .NET Core, Azure, Node.js, Java, Kafka, PostgreSQL, MongoDB, Redis, Docker, Kubernetes, and Terraform.
  • ๐Ÿค– Experienced with AI-assisted engineering workflows, including GitHub Copilot, Claude, RAG concepts, semantic retrieval, and LLM integrations.
  • โ˜๏ธ Passionate about cloud platforms, scalable APIs, infrastructure automation, observability, and modern software architecture.
  • ๐ŸŒŽ Based in Calgary, Alberta, Canada.
  • ๐Ÿ“š Currently studying Software Development at Bow Valley College.
  • ๐ŸŽฏ Focused on building maintainable, production-ready systems that scale efficiently under real-world workloads.

๐Ÿ—๏ธ Current Focus

  • AI-assisted engineering workflows
  • Distributed systems & event-driven architecture
  • Cloud-native backend engineering
  • Infrastructure as Code (Terraform)
  • Azure-based enterprise platforms
  • CI/CD automation & DevOps
  • Scalable API design
  • RAG & AI knowledge systems

๐Ÿง  Tech Stack

Backend Engineering

Frontend Technologies

Cloud & DevOps

Databases & Messaging

Tools & Platforms


๐Ÿค– AI Engineering Experience

  • AI-assisted development workflows
  • GitHub Copilot & Claude-assisted coding
  • Prompt engineering & AI productivity workflows
  • Retrieval-Augmented Generation (RAG)
  • Semantic search concepts
  • LLM API integrations
  • AI-powered backend services
  • AI-enhanced SDLC workflows
  • Embeddings & vector search concepts
  • AI workflow automation

๐Ÿ’ผ Professional Experience

Offshore Team โ€” Senior Software Engineer

๐Ÿ“ Makati City, Manila, Philippines (Remote)
๐Ÿ“… Apr 2023 โ€“ Jul 2024

  • Architected distributed backend services using .NET Core, Node.js, Kafka, PostgreSQL, Redis, Docker, and Kubernetes.
  • Integrated AI-assisted development workflows into CI/CD and backend engineering processes.
  • Delivered enterprise-grade SaaS platforms supporting 120K+ monthly active users.

Kobkiat-IT โ€” Backend Engineer

๐Ÿ“ Bangkok, Thailand (Remote)
๐Ÿ“… Oct 2020 โ€“ Nov 2023

  • Built scalable APIs and transaction-processing systems handling more than 1.5M monthly transactions.
  • Designed integration layers for ERP systems, payment gateways, logistics services, and enterprise workflows.
  • Automated deployment pipelines and infrastructure provisioning using Terraform and GitHub Actions.

Emerio โ€” .NET Core Backend Developer

๐Ÿ“ Quezon City, Manila, Philippines (Onsite)
๐Ÿ“… Jun 2019 โ€“ Sep 2020

  • Developed enterprise automation systems and backend integration services using .NET Core, Java, and SQL Server.
  • Improved operational processing efficiency through scalable APIs and asynchronous workflows.

Yeaps โ€” Backend Developer

๐Ÿ“ Makati City, Manila, Philippines (Onsite)
๐Ÿ“… Nov 2018 โ€“ Jun 2019

  • Developed backend APIs, authentication systems, and operational modules using Node.js and MongoDB.
  • Built reusable backend components improving engineering delivery speed and maintainability.

๐Ÿ† Selected Projects

๐Ÿ”น Payperclip โ€” Content Monetization Platform

Built scalable backend APIs and payment integration services supporting creator subscription and monetization workflows.

๐Ÿ”น Paysociety โ€” E-Wallet Platform

Implemented secure transaction processing systems, wallet services, and authentication modules for digital financial operations.

๐Ÿ”น RespAi โ€” Fire Department CRM Platform

Engineered multi-tenant backend services and workflow automation systems for operational management platforms.

๐Ÿ”น Jurlique โ€” Real-Time E-Commerce Integration

Developed event-driven backend synchronization services integrating inventory, e-commerce, and operational systems.

๐Ÿ”น AXA Recruitment Platform

Built enterprise APIs and applicant processing modules streamlining recruitment workflows and onboarding systems.


๐ŸŽ“ Education

Bow Valley College โ€” Calgary, Alberta, Canada

Software Development
๐Ÿ“… Sep 2024 โ€“ Apr 2026

Thesis

AI-Assisted Enterprise Knowledge Retrieval Platform Using Retrieval-Augmented Generation (RAG) and Semantic Search


Cavite State University โ€” Indang, Cavite, Philippines

Bachelorโ€™s Degree in Information Technology
๐Ÿ“… Jun 2011 โ€“ Apr 2016

Thesis

Web-Based Sales and Inventory Management System with Real-Time Reporting and Analytics


๐Ÿ“œ Certifications

Java: Data Structures

๐Ÿ“… Issued Jan 2026


M220N: MongoDB for .NET Developers

๐Ÿ“… Issued May 2021


๐Ÿ“ซ Connect With Me


โšก Engineering Philosophy

I believe great software is not only functional โ€” it must be scalable, maintainable, observable, secure, and built for long-term operational success.

I enjoy solving complex engineering challenges involving:

  • distributed systems
  • backend scalability
  • cloud infrastructure
  • AI-assisted workflows
  • developer productivity
  • enterprise integrations
  • performance optimization
  • platform modernization

Always learning. Always building. Always improving.

Pinned Loading

  1. Content-Monetization-Platform Content-Monetization-Platform Public

    A content monetization platform supporting dual user roles (Creator and Fan) with multi-tier content pricing and 3 integrated payment methods including Paysociety E-Wallet, bank transfer, and crediโ€ฆ

    HTML

  2. E-Commerce-AspNetCore E-Commerce-AspNetCore Public

    eTracker is a Package Tracking website that updates package progress in real time when shipped. Ideal for intergration with e-commerce websites so customers can keep inform on when they're getting โ€ฆ

    JavaScript

  3. Paysociety-E-Wallet-System Paysociety-E-Wallet-System Public

    Designed a REST API for E Wallet Payment System, which provides all the basic funtionalities for Online Digital Wallet using JAVA with SpringBoot, Hibernate, Maven, J.D.B.C and MySQL Database as a โ€ฆ

    Java

  4. Recruitment-Online-Career Recruitment-Online-Career Public

    A digital recruitment pipeline built for AXA Philippines that automated the end-to-end hiring process from applicant intake to licensed financial advisor onboarding.

    HTML

  5. RespAi-Fire-Department-CRM-Lead-Generation-Platform RespAi-Fire-Department-CRM-Lead-Generation-Platform Public

    Built a SaaS CRM platform for fire departments that integrates federal grant data, applies automated matching and lead scoring logic to surface funding opportunities, and delivers results through aโ€ฆ

    JavaScript

  6. Sales-Tracking-System Sales-Tracking-System Public

    An internal sales tracking platform giving YEAPS real-time visibility into individual promoter performance across the organization. Built across the full SDLC from requirements gathering through deโ€ฆ

    JavaScript