whoami
Mark Lestat
Agustin
Backend Developer & CS Senior
Full-stack developer with a track record of leading technical teams and shipping AI-integrated products. Building scalable backend systems with Node.js, Java, and Python — from RAG pipelines to LLM-powered CLI harnesses. Lean Six Sigma certified. Based in Baguio City, Philippines.
$ cat ./profile.json
Developer Profile
Core Backend
Databases
Infrastructure
Tooling
Frontend
AI & Agents
Practices
Tinkering
$ ls -la ./current_projects
Currently Working On
icon-organization-webapp
Building a web application for ICON - SLU Integrated Confederacy to manage events and member activities, increasing student engagement and participation.
ESCA: Ecosystem for Sustainable Commerce in Agriculture
A mobile application developed in partnership with Alcavega, a farmer cooperative in Castaneda, Nueva Vizcaya. Supports post-harvest operations — crop deliveries, purchase pricing, and shipment tracking.
Panpacific Custom CMS
Revamping the Panpacific website with a modern design and improved content management capabilities.
space-invader-clone
A clone of the retro classic built with Lua and Pico-8 — a fun exploration of game development and retro gaming concepts.
$ ls -la ./completed_projects
Completed Projects
CACHE: Clues and Concepts Hunting Experience
A memory game built with JavaFX, demonstrating OOP design and GUI development.
Code
LexiLogic
Real-time multiplayer word game inspired by Boggle, built with JavaFX and CORBA for distributed systems.
Code
Stock Pilot
Inventory Management System built as a client-server application with Java RMI.
Code
WayWard
Android application — the Pinterest of travel itineraries. Create, share, and discover travel plans.
Code
CAR Language Mapping
Language mapping app for the Cordillera Administrative Region — explore the languages spoken in the region.
CodeomniORBpy Installation Write-Up
A guide for installing omniORBpy on Windows — written to help fellow students in Computer Programming 3.
Code$ cat ./work_experience.json
Experience & Organizations
ESCA – Supply Chain Analytics Platform
Aug 2025 – Present
Co-founded and led product development of ESCA, an AI-augmented supply chain analytics platform for agricultural cooperatives. Architected serverless backend on Supabase and built RESTful APIs powering Crop and Packing House Management modules.
Panpacific University – Custom CMS
Jul 2025 – Present
Pitched and won the university web development contract; served as Project Head managing full development lifecycle and a cross-functional engineering team. Built Wagtail CMS with automation workflows; integrated RAG AI pipeline for intelligent content retrieval; deployed via Docker, GitHub Actions CI/CD, and DigitalOcean.
NOAH Business Applications
Jun 2025 – Jul 2025
Developed an AI-assisted HR web application integrating intelligent automation into internal HR workflows, improving operational efficiency across departments. Conducted end-to-end QA including Happy Path testing and business rule validation across HR and Leasing departments.
SLU – Integrated Confederacy (ICON)
Aug 2025 – Present
Lead strategic planning and coordinate operations for the CS student organization, overseeing committees and driving community-wide initiatives.
SLU – Integrated Confederacy (ICON)
Aug 2024 – Jul 2025
Organized competitive events providing students opportunities to showcase computing and problem-solving talents. Designed programming challenges; hosted Montes Progue 2025, Frontier CTF 2025, and Programmer of the Month.
Leszach Inc.
Jan 2020 – Jan 2022
Managed Facebook ad campaigns for e-commerce clients, achieving up to 3× ROAS for a key client through iterative creative testing and audience optimization. Analyzed campaign performance metrics to surface conversion trends, informing data-driven budget allocation decisions.
$ cat ./awards.json
Awards & Recognition
Philippine Startup Challenge X: 2nd Place
DICT — Cordillera Administrative Region
Co-founded ESCA; led product ideation, backend development, and business pitch. Secured 2nd Place against startups and university teams in the Cordillera region.
November 2025
Meralco Idol Hackathon 2025: 3rd Place
Manila Electric Company (Meralco)
Led API development for VoltGuard, a real-time energy waste detection system using YOLOv8 and OpenAI. Secured 3rd Place among 45 competing university teams.
November 2025
IBM Bob Hackathon: Mission Forge
IBM
Built Mission Forge, an agent-agnostic LLM CLI harness with Lean Six Sigma-inspired architecture for structured, measurable AI agent workflows.
2026
CASE Conquest 2025: 1st Runner Up
De La Salle University × Globe Telecom
1st Runner Up in FUSION 2025 pitching competition, showcasing innovative tech and business solutions.
July 2025
Certified Lean Six Sigma Yellow Belt
Lean Six Sigma Institute
Certified in Lean Six Sigma methodology, applying structured quality management and process improvement principles to software engineering workflows.
March 2025
Project Management Fundamentals
Professional Certification
Certified in foundational project management principles covering planning, execution, and stakeholder management.
March 2025
Devesse Award of Innovation 2025
Saint Louis University
Awarded for representing SLU in the MPTC Innovation Olympics, earning 2nd place.
May 2025
Gawad San Luis Certificate of Recognition
Saint Louis University
Recognized for efficient stewardship as an officer of a recognized student group of SLU.
May 2025
MPTC Innovation Olympics 2024: 2nd Place
Metropacific Tollways Corporation
Secured 2nd Place competing against universities in Baguio City.
July 2024
Montes Progue 2023: Champion
ICON – SLU Integrated Confederacy
Won the annual Montes Progue competition, showcasing problem-solving and teamwork.
2023
Trend Micro 2024 University CTF
Trend Micro
Participated in the yearly university-level Capture The Flag competition focusing on cybersecurity.
October 2024
$ cat ./events.log
Recent Events & Activities
Philippine Startup Challenge X
Competed in the DICT-hosted Cordillera Pitching Competition, securing 2nd place among university and startup teams.
Meralco Idol Hackathon 2025
Developed innovative solutions and secured 3rd place among university teams competing nationwide.
FUSION 2025: Case Conquest
Participated in the DLSU pitching competition partnered with Globe Telecom, showcasing tech and business innovation.
Montes Progue: 2025
Hosted the annual problem-solving event for students to showcase computing and critical thinking skills.
ICON CTF: 2025
Hosted a Capture The Flag competition for ICON, focusing on cybersecurity challenges and skills development.
Breaking into Cybersecurity: A Practical Guide
Hosted a conference introducing beginners to cybersecurity, covering essential skills and career paths.
AWS t3.horizon: In the Clouds, Above the Pines
Attended the AWS conference focusing on cloud innovations and best practices.