Hi, I'm Mars
Full‑Stack Engineer · Frontend Specialist · ETL / Data Ops
I design and build reliable, performant web applications — modern React/Next.js frontends, clean .NET & Node.js APIs, and efficient ETL data pipelines. 5+ years delivering features for local & international clients across the 🇵🇭 Philippines, 🇬🇧 UK, 🇺🇸 US, and beyond.
- 5+Years Exp.
- 30+Projects
- 100k+Users
- 10xETL Wins
Status
Open to Work
Experience
🌍 Local & International
🇵🇭 🇬🇧 🇺🇸 🇨🇦 🇦🇺
SERVICES & EXPERTISE
Full-Stack Development
End-to-end web apps — React/Next.js frontends, .NET or Node.js backends, fully integrated and production-ready.
Mobile-First & Responsive
Every interface built mobile-first, pixel-perfect across all screen sizes — phones, tablets, and desktops.
ETL & Data Pipelines
Design and optimise Apache NiFi data flows, SQL/NoSQL schemas, and ETL processes that run 10× faster.
Performance & Speed
Zero bloat, lean code, optimised assets. Apps that load instantly and convert visitors into users.
Global Reach
WORKED WITH LOCAL & INTERNATIONAL CLIENTS
Delivered projects for clients across multiple countries — from local Philippine startups to companies in the UK, US, Canada, and Australia.
TOOLS & TECHNOLOGIES
Frontend
Backend
Database
ETL / Data
UI / UX
Tools & Ops
Projects Worked On
College Aid Plan
- Designed UI/UX
- Developed Web App
College Aid Plan
- Designed UI/UX
- Developed Web App
College Aid Plan
- Designed UI/UX
- Developed Web App
Access Benefit Sharing (ABSCH)
- Designed UI/UX
- Developed Web App
CRM for ABSCH
- Designed UI/UX
- Developed Web App
Farm Konekt
- Designed UI/UX
- Developed Web App
Student Portal
- Designed UI/UX
- Developed Web App
ISTOPP Web App
- Information System on Transport Operations
- Developed Web App
- Integrated Data
Grate New Castle
- Developed Web App
- Maintained Web App
TL Competitions
- Developed Web App
Remora
- Maintained Web App
GHB Consultancy
- Maintained Web App
Developed for Prototypes
Need4Sped App
- Developed Mobile App
My Phone App
- Developed Mobile App
Farm Konekt Web App
- Developed Web App
PSU Student Portal
- Developed Web App
PSU Registrar Portal
- Developed Web App
Contact Me
Call Me
(+63) 939 750 9659
Available Mon–Fri, 9AM–6PM PHT
mcosicoljr@gmail.com
I respond within 24 hours
facebook.com/mcosicoljr
Send me a message anytime
Marcelito Cosicol
Let's connect professionally
Ready to build something great?
LET'S WORK TOGETHER
I'm open to full-time roles, contract projects, and freelance engagements. Let's discuss how I can add value to your team.
Get In Touch