Open to opportunities

Oliver Duhaylungsod

@oliverduhaylungsod

Message

I build cloud-native enterprise applications, microservices, and AI integrations from prototype through production.

Philippines

Message

What I'm looking for

I'm looking to build scalable cloud-native products and enterprise systems, owning end-to-end delivery while applying microservices, modern full-stack development, and practical GenAI integrations.

I've built enterprise-grade applications for Tech9, Ingenuity Global Consulting, and Mugna Technologies, owning delivery from early prototypes through production deployments.

At Tech9, I architected cloud-native SaaS systems on AWS using ECS, Lambda, S3, EventBridge, Terraform, Node.js, Go, React, Next.js, and TypeScript. I also integrated OpenAI API, prompt engineering, and LangChain RAG pipelines to improve data-processing workflows.

At Ingenuity Global Consulting, I designed Azure microservices with Functions, Service Bus, and App Services, modernized monolithic systems, and created React dashboards that enabled real-time enterprise insights. I partnered closely with stakeholders and helped coordinate engineering initiatives across Davao and Cebu teams.

Earlier at Mugna Technologies, I delivered web applications, REST APIs, MVPs, and scalable Google Cloud backend services for SME and startup clients.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Tech9

Jan 2024 - Mar 2026 (2 years 2 months)

Architected cloud-native SaaS architectures using AWS technologies and microservices with Node.js and Go. Designed CI/CD pipelines and integrated AI systems with OpenAI API and LangChain.

AWS Lambda S3 EventBridge Node NestJS Go React Next.js TypeScript GitHub Actions Vercel OpenAI API Lang Chain RAG Terraform Microservices CI CD

Senior Software Engineer

Ingenuity Global Consulting

Feb 2020 - Dec 2023 (3 years 10 months)

Architected enterprise solutions using Java, .NET Core, and Python, and implemented microservices on Azure. Created interactive React dashboards and led engineering initiatives across teams.

Java .NET Core Python Azure Functions App Services React Microservices Architecture

Software Engineer

Mugna Technologies Inc.

May 2013 - Jan 2020 (6 years 8 months)

Designed and implemented dynamic web applications using PHP, Flask, JavaScript, and MySQL. Collaborated with clients to develop REST APIs and deployed services to Google Cloud.