Open to opportunities

Dondon Herrera

@dondonherrera

Message

Senior software engineer building scalable .NET/Azure microservices and AI-assisted engineering workflows.

Canada

Message

What I'm looking for

I’m looking for a team where I can build scalable backend systems on .NET/Azure, improve observability and CI/CD reliability, and apply AI-assisted development (RAG, copilots) to raise engineering velocity and code quality.

I’m a Senior Software Engineer with 7+ years designing enterprise-grade backend systems, cloud-native platforms, distributed services, and scalable APIs across SaaS, fintech, logistics, and e-commerce. I specialize in C#, .NET Core, Azure, and modern integration patterns, with a strong focus on microservices architecture and infrastructure modernization.

In recent roles, I’ve architected and delivered production-ready services supporting 120K+ monthly active users across multi-client deployments. I’ve re-engineered API processing and database access patterns to reduce average endpoint latency by 47%, improved peak-hour throughput stability, and decreased operational bottlenecks by 55%. I’ve also migrated legacy monoliths into Docker- and Kubernetes-based microservices, cutting deployment rollback incidents by 40% and improving release reliability.

I also strengthen teams’ delivery through observability and automation—centralized logging/metrics, better incident response quality, and CI/CD pipelines using GitHub Actions and Jenkins. I integrate AI-assisted engineering workflows (GitHub Copilot, Claude Code, RAG concepts, embeddings, and retrieval workflows) to improve engineering velocity and code quality, and I mentor engineers through architecture reviews, pair programming, and production debugging.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Offshore Team

Apr 2023 - Jul 2024 (1 year 3 months)

Architected and delivered enterprise SaaS backend services using C#, .NET Core, Node.js, PostgreSQL, Redis, and Kafka for multi-client deployments supporting 120K+ monthly active users. Re-engineered API and database workflows to cut endpoint latency by 47% and reduce operational bottlenecks by 55%, while migrating to Docker/Kubernetes to lower rollback incidents by 40%.

C++.NET Core PostgreSQL Redis Kafka Microservices Docker Kubernetes CI CD

Senior Backend Engineer

Kobkiat-IT

Oct 2020 - Nov 2023 (3 years 1 month)

Engineered scalable backend systems for logistics, e-commerce, booking, and CRM using Java, Spring Boot, .NET Core, Node.js, MongoDB, and PostgreSQL. Built high-volume transaction processing for 1.5M+ monthly transactions, improved database performance by 52%, reduced manual deployment effort by ~40%, and cut incident resolution time by 45%.

Java Spring Boot .NET Core MongoDB PostgreSQL Terraform Redis CI CD Observability

Backend Developer

Emerio

Nov 2019 - Apr 2021 (1 year 5 months)

Developed backend APIs and enterprise integration services using Java, Spring Boot, C#, and SQL Server for business process automation. Delivered integrations that reduced manual operational processing effort by 60% and improved backend processing time by 42% through refactoring, async processing, and query optimization.

C++Java Spring Boot SQL Server REST APIs Query Optimization Integration Services CI CD Observability

Backend Developer

Yeaps

Nov 2018 - Jun 2019 (7 months)

Built backend APIs and server-side modules with Node.js, Express.js, MySQL, and MongoDB, implementing authentication and secure API communication for customer-facing web applications. Optimized API response handling and database queries to improve service response times by ~30%, and integrated payment processing, third-party APIs, and notifications into backend workflows.

MySQL MongoDB REST APIs Authentication API Integration API Performance CI CD

Education

Degrees, certifications, and relevant coursework

Bow Valley College

Software Development

2024 - 2026

Studied Software Development with a thesis on an AI-assisted enterprise knowledge retrieval platform using Retrieval-Augmented Generation (RAG) and semantic search.

Cavite State University

Bachelor's Degree in Information Technology, Information Technology

2011 - 2016

Earned a bachelor's degree in Information Technology with a thesis on a web-based sales and inventory management system with real-time reporting and analytics.