Hi, I'm

Marvin James Erosa

I believe the most powerful ideas are the ones that bring people together. My work is about engineering those dreams into reality by building intelligent, secure platforms where communities can thrive and create what's next.

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About Me

I believe the most powerful things in the world happen at the intersection of technology and humanity. It's not about building systems; it’s about architecting ecosystems. It's about connecting the dots between beautiful engineering and the human experience. My entire journey has been about finding that intersection.

Technology, however, is just a tool. Its true power is in empowering people. That’s why I build communities and mentor the next generation of creators to invent the future. I’m here to build the tools that will help others put their own dent in the universe.

Open Source Advocate
Full-Stack Innovator
Community Builder
Environmental Researcher
Portrait

"The future isn't something you wait for. It's something you build."

My Mission

To engineer insanely great tools that empower creators, innovators, and builders to design the future. My work is dedicated to building the platforms and communities that enable other talented people to push humanity forward.

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Work Experience

Connecting the dots of my professional journey.

Principal Software Engineer
Tomeku (Freelance)
Jun. 2025 – Present

Architecting and deploying end-to-end technical ecosystems for B2B clients, from core infrastructure to the application layer.

Technologies & Tools

AWS
Azure
Google Cloud
Okta
Python
Proxmox VE
Network Architecture

Key Achievements & Responsibilities

Architected and deployed scalable, end-to-end technical ecosystems for B2B clients.

Engineered and provisioned complete IT infrastructures from the ground up, including identity management and collaboration suites.

Designed and maintained resilient network infrastructures to support high-throughput, real-time data ingestion.

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Leadership & Community

Beyond coding, I'm passionate about giving back to the community and developing future tech leaders

Team of volunteers working on computers
Volunteer Work
Volunteer Software Developer
Code for Good Philippines
Manila, Philippines
2021 - Present

Developing web applications for non-profit organizations to help them manage their operations and reach more beneficiaries.

Impact & Results

Built platforms serving 500+ families in underserved communities

Key Skills & Technologies

React
Node.js
MongoDB
Community Outreach
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Technical Toolkit

It's not a list of technologies. It's the right set of tools to architect and build insanely great products, from end to end.

Frontend Development

React & Next.js90%
TypeScript85%
HTML & CSS95%
Tailwind CSS85%

Backend Development

Python (Flask, Pandas)90%
Node.js (Express, Next.js API)80%
REST APIs & GraphQL85%
Authentication & Authorization85%

Cloud & Infrastructure

AWS, Azure, & Google Cloud90%
Proxmox VE & Self-Hosting85%
Linux & Windows Server80%
Networking (LAN/WAN, DNS, Cloudflare)85%

DevOps & Automation

CI/CD (GitHub Actions, Vercel)85%
Bash & PowerShell Scripting80%
Microsoft Power Platform85%
Security (IAM, Okta, Firewalls)90%

Data & Databases

Relational (Azure SQL, Cloud SQL)85%
NoSQL (MongoDB, Firebase)80%
ETL & Data Transformation85%
Data Visualization (Power BI)90%

Hardware & Embedded Systems

Robotics & Control Systems85%
IoT System Architecture & Deployment90%
Embedded Systems & Microcontrollers85%
PCB Design & Prototyping80%

Featured Projects

A selection of my recent full-stack development projects

Get In Touch

Have a project in mind or want to discuss opportunities? I'd love to hear from you.

Connect With Me

Availability

Open to freelance and full-time opportunities