Jan Liwanag
Co-Founder at Sikat Tech, Inc.
Pasay, Philippines
Summary
👤
Senior🎓
Top SchoolJan Liwanag is a seasoned software leader and serial founder with 14 years of experience building production-grade web, mobile, and backend systems from first principles. He has led engineering at scale—driving SM Retail’s ecommerce platform as AVP ITS and architecting Scala-based microservices and React Native apps as CTO of a loyalty platform—while now co-founding Sikat Tech after earlier startup ventures. Technical depth spans distributed systems, functional type-driven design, VoIP/open-source telephony, and dependency management in niche ecosystems like PureScript package-sets. He blends hands-on engineering with product-facing leadership, often resurfacing and restoring critical libraries and packages to keep ecosystems healthy. Based in Pasay, Philippines, Jan pairs academic roots in computer science with pragmatic operational experience delivering consumer-facing and enterprise systems. Colleagues describe him as a builder who prefers principled engineering decisions over quick hacks.
14 years of coding experience
12 years of employment as a software developer
University of the PhilippinesBachelor of Science, Computer Science, Bachelor of Science, Computer Science at Ateneo de Manila University
English, Filipino
Stackoverflow
1,538reputation
80kreached
13answers
23questions
Github Skills (18)
dependency-management10
purescript10
dhall10
package-management9
typesc9
functional-programming8
package-repository7
package7
package-manager7
playframework6
fs6
typesafe-config6
android6
software-distribution6
erlang6
Programming languages (16)
Github contributions (5)
purescript/package-sets
Jul 2020 - Apr 2021
PureScript packages for Spago and Psc-Package
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 6 PRs in 8 months
Contributions summary:Jan's contributions primarily involve modifying package sets within the PureScript ecosystem. They added and updated packages related to literals and untagged-unions, and restored typelevel-peano and dodo-printer. These changes focused on dependency management within the package set, ensuring the availability of specific PureScript libraries and their correct versions for other projects that use this package set. The commits indicate an understanding of how PureScript package sets function and how to integrate different libraries.
package-setpsc-packagepscpackage-managerspago
rowtype-yoga/purescript-untagged-union
Nov 2019 - Mar 2021
A Purescript data type for untagged unions
Contributions:2 releases, 2 reviews, 56 commits in 1 year 4 months
untaggedpurescriptdata-typeunions
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.