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Dondon Herrera · Senior Software Engineer

Dondon Herrera · Software Engineer

Engineering digital solutions that solve real problems.

Full Stack Engineer specializing in React, Next.js, and Node.js. I build responsive, high-performance applications and thrive on solving real-world challenges with modern tools.

More about me

View Resume See Project List

Code. Engineer. Optimize. Deliver

Making apps with modern technologies.

Backend, Frontend, Databases, Cloud, and AI — I Build It All Pretty Fast and Pretty Good.

Education & Certifications

Education

Cavite State University

Cavite, Philippines

Jun 2011 – Apr 2016

Bachelor’s Degree in Information Technology

Bow Valley College

Alberta, Canada

Sep 2024 – Apr 2026

Software Development

Certifications

Java: Data Structures • Collections, stacks, queues and tree sets • Issued Jan 2026 • LinkedIn Learning
M220N: MongoDB for .NET Developers • C#/.NET driver, CRUD, querying and aggregation with ASP.NET • Issued May 2021 • MongoDB University

Experience

Offshore Team

Senior Software Engineer

Apr 2023 – Jul 2024 · Remote

Architected enterprise SaaS backends (C#, .NET Core, Node.js, PostgreSQL, Redis, Kafka) for 120K+ monthly active users across multi-client deployments.
Re-engineered API and database access patterns: ~47% lower average endpoint latency and more stable peak-hour throughput.
Designed event-driven microservices and Kafka-backed async pipelines, reducing operational bottlenecks by ~55%.
Migrated legacy monoliths to Docker- and Kubernetes-based microservices: ~40% fewer deployment rollback incidents.
Integrated GitHub Copilot and AI-assisted workflows; prototyped RAG-style tools for documentation discovery and troubleshooting.
Expanded Azure (App Services, Storage) and automation for enterprise customers; mentored engineers via reviews and pair programming.

Kobkiat-IT

Senior Backend Engineer (Freelance)

Oct 2020 – Nov 2023 · Remote

Built scalable backends for logistics, e-commerce, booking, and CRM using Java, Spring Boot, .NET Core, Node.js, MongoDB, and PostgreSQL.
Delivered high-volume transaction processing—1.5M+ monthly transactions—with stable performance under concurrency.
API orchestration for ERP, payment gateways, shipping providers, and third-party vendor platforms.
Optimized indexing, query plans, and distributed caching: ~52% better database performance with lower resource use.
Automated CI/CD and provisioning with Terraform and GitHub Actions, cutting manual deployment effort by ~40%.

Emerio

Backend Developer

Jun 2019 – Sep 2020 · Manila, Philippines

Developed backend APIs and integrations with Java, Spring Boot, C#, and SQL Server for business process automation.
Integration services connecting enterprise and third-party systems cut manual operational effort by ~60%.
API refactoring, asynchronous processing, and query tuning reduced average processing time by ~42%.
Built scheduled sync and data migration workflows for large operational and reporting datasets.
Contributed to CI/CD modernization and worked with QA and infrastructure on production reliability and observability.

Yeaps

Backend Developer

Nov 2018 – Jun 2019 · Manila, Philippines

Shipped Node.js, Express, MySQL, and MongoDB APIs for operational and customer-facing platforms.
Implemented authentication, session management, and secure API layers for customer web applications.
Reusable backend modules accelerated delivery across projects; optimizations improved response times by ~30%.
Integrated payment processing, third-party APIs, and notification workflows.
Supported production deployments, debugging, and Agile-based delivery.

Performance & security.

Decrypt

Secure your data with end-to-end encryption.

Showcase 🚀

E-Commerce Operations & Integration — 6 Australian Consumer Brands

Multi-brand e-commerce backbone for Toppik, Waterpik, Curash, Flawless, Therabreath, and Hero Cosmetics on BigCommerce B2C and B2B. A custom Windows Service layer automated order fulfillment end-to-end via Cargoline and Pronto (FTP-backed APIs)—cutting manual processing time by about 60% while keeping high-volume retail operations predictable.

Jurlique — Real-Time E-Commerce Event Integration

Real-time monitoring for Jurlique on BigCommerce: webhooks and ngrok gave full-spectrum listening across storefront events. Incident detection moved from hours to minutes by surfacing problems as they happened—not after customers already felt them.

Payperclip — Content Monetization Platform

Dual-sided platform for Creators and Fans with multi-tier content pricing and three payment rails—Paysociety e-wallet, bank transfer, and card. The backend is a full microservices architecture with Kafka for event-driven workflows, built to scale billing, access control, and payouts cleanly.

Paysociety — E-Wallet System

Distributed fintech wallet supporting TopUp, transfers, and multi-channel payment flows. Kafka powers event streaming across services; Ocelot acts as the API gateway hardening cross-service traffic; Identity Server anchors authentication for a coherent security story.

Recruitment Online — Serviced by AXA (Philippines)

End-to-end digital hiring for AXA Philippines—from applicant intake through licensed financial advisor onboarding. A TDD-shaped REST API underpins the pipeline; SSRS reporting and tuned stored procedures give leadership real-time visibility into every stage of recruitment.

RespAi — Fire Department CRM & Lead Generation

SaaS CRM for fire departments: ingests federal grant data, runs automated matching and lead scoring to surface funding opportunities, and delivers results through a secure cloud UI. Shipped on Azure Static Web Apps and Azure Functions with OAuth 2.0, MSAL.js, and Axios interceptors—React and TypeScript on the front end as part of a collaborative delivery team.

UCO Tracking System

Internal operations platform for a fintech—tracks UCO collection across many collectors. Hangfire runs background jobs; custom stored procedures and multiple report types give operations real-time insight into collection performance and exceptions.

YEAPS — Sales Tracking System

Internal sales intelligence for YEAPS—individual promoter performance across the organization in one place. Owned the full SDLC from requirements through deployment so leadership could steer incentives and territory plans with data instead of spreadsheets.

More Projects →

Software Developer

From concept to click, I handle it all. Let’s shape your next digital experience together.

Available Immediately

Open for Remote Work

Years of Experience

Projects Delivered