Darren Sapalo
Software Engineer at Layer
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolDarren Sapalo is a pragmatic software engineer and leader with 11 years of professional experience and over 20 years coding, currently based in San Francisco. He has led engineering teams and architected production systems that process millions in fintech flows and scaled an AI-driven financial statement ingestion pipeline to cut modeling time from 10 minutes to 75 seconds. His background spans end-to-end systems engineering—Golang, Typescript, Python, Rust, LangChain—with hands-on DevOps and microservices architecture experience across startups and government projects. Notable wins include designing a remittance platform that handled $20M in transactions across multiple US jurisdictions and building a QR pass system that approved over 500k pandemic-era passes for Filipino frontline workers. Founder of Tome.gg, he applies AI to personalize mentorship and enjoys simplifying complex problems while fostering deep learning across teams.
12 years of coding experience
10 years of employment as a software developer
Basic and Advanced Certificate Course on Strategic Management of Intellectual Property, Intellectual Property Law, Top Student (Advanced class), Basic and Advanced Certificate Course on Strategic Management of Intellectual Property, Intellectual Property Law, Top Student (Advanced class) at De La Salle UniversityMaster of Business Administration - MBA, Entrepreneurship/Entrepreneurial Studies, 3.59, Master of Business Administration - MBA, Entrepreneurship/Entrepreneurial Studies, 3.59 at Hult International Business SchoolHigh School/Secondary Diplomas and Certificates, High School/Secondary Diplomas and Certificates at Colegio San Agustin, Makati
English, Filipino, Spanish, Chinese, Japanese, Russian
Stackoverflow
1,849reputation
270kreached
35answers
15questions
Github Skills (200)
python10
pydantic10
chatgpt10
observable10
generative-ai10
ai10
gemini10
typescript10
asynchronous10
langchain10
open-source10
plugin10
llm10
openai10
wordpress-plugin10
Programming languages (18)
Github contributions (5)
tome-gg/alignment
Mar 2023 - Dec 2025
A web app client interface for the proof-of-concept Alignment Negotiation smart contract
Contributions:15 PRs, 163 pushes, 5 branches in 2 years 9 months
anchorangularlearn-in-publicrustsolana
darrensapalo/facebook-data-collector
Nov 2017 - Jan 2023
A scaffolding tool for sending automated messages to people in Facebook Messenger.
Contributions:23 PRs, 47 pushes, 3 branches in 5 years 2 months
automated-messagesscaffoldingfacebooksendingmessenger
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