Luis Borjas Reyes

  • @lfborjas
  • Senior Software Engineer, Team Mobot
  • queens, ny
computer person, math misunderstander...  
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Positions

Senior Software Engineer

  • Team Mobot
  • Aug 2019 - Present

Director of Engineering, Backend

  • Birchbox
  • Jul 2018 - Aug 2019

Software Engineer

  • Birchbox
  • Oct 2016 - Jul 2018

Self-employed/twice-failed-co-founder

  • Self/class.io/pictour.us
  • May 2009 - Oct 2016
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Luis's Collections

Open Source

4 Highlights

Blog Posts

2 Highlights

What Luis's working on

What Luis's working on

2021

Nov 12, 2021
Nov 12, 2021
Wrote a Blog Post
Used Haskell
Finally got around to writing about my last year-ish doing some intense yak-shaving in Haskell: https://tech.lfborjas.com/haskell-field-notes-1/
Nov 12, 2021
Nov 12, 2021
Contributed to Open Source Project
Used Haskell
Merged a pretty big update to my Haskell bindings to swiss ephemeris:

  • Refactored the time type to be able to type-safely work with universal or ephemeris types without mixing them up.
  • Introduced a way to generate and read "precalculated" ephemeris in a binary file, making sequential reads of multi-planet ephemeris much faster.
  • Ported a few functions for heliocentric "crossing" finding (when a given planet may cross a given longitude,) as well as a couple of original functions not provided by the underlying C library: geocentric crossing if the rough beginning and end times are known, and when a moon phase may become exact.
  • Ported functions for eclipses and planetary phenomena.
Whole thing at: https://github.com/lfborjas/swiss-ephemeris/pull/37 

2020

Oct 29, 2020
Oct 29, 2020
Wrote a Blog Post
Published a blog post about how I haven't published blog posts in over a decade: https://tech.lfborjas.com/a-decade-long-hiatus/
Oct 17, 2020
Oct 17, 2020
Used Haskell
Created an Open Source repository
Launched a new website
+ 1
Launched my free, open-source natal chart site -- written in Haskell!

https://freenatalchart.xyz/

2019

Aug 19, 2019
Aug 19, 2019
Started a new role at Team Mobot
back to IC work!
Senior Software Engineer, Team Mobot
Aug 16, 2019
Aug 16, 2019
Left a role at Birchbox
back to IC work
Director of Engineering, Backend, Birchbox
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