Shachaf Ben-kiki
Software Engineer at XTX Markets
United Kingdom
Summary
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RockstarShachaf Ben-kiki is a seasoned software engineer with 19 years of experience building robust back-end and systems software across finance, storage, and infrastructure companies. Currently at XTX Markets after four years at Pure Storage and roles at Voleon, Google, and RethinkDB, he brings deep expertise in distributed systems, reliability engineering, and performance-focused implementations. He’s an active contributor to the influential Haskell lens library, where he’s improved core folds and traversals and performed careful type-generalization and refactoring work. Based in the UK, Shachaf blends production-grade engineering with a penchant for elegant, type-safe abstractions and long-term code health.
18 years of coding experience
9 years of employment as a software developer
Stackoverflow
8,930reputation
95kreached
70answers
3questions
haskell
top-5%
functional-programming
top-5%
Github Skills (12)
type-system10
functional-programming10
refactoring10
lenses10
haskell10
refactor10
mercury6
recursion-schemes6
monads6
ghc6
functor6
recursive-data-structures6
Programming languages (10)
Github contributions (5)
ekmett/lens
Oct 2012 - Jul 2015
Lenses, Folds, and Traversals - Join us on web.libera.chat #haskell-lens
Role in this project:
Back-end Developer
Back-end DeveloperContributions:174 commits, 1 PR, 1 push in 2 years 9 months
Contributions summary:Shachaf primarily contributed to the `lens` library by fixing and improving core functionalities. Their work focused on refining various fold and traversal operations, including `droppingWhile` and `idroppingWhile`, which involved code adjustments in the `Fold.hs`, `IndexedFold.hs`, and `Setter.hs` files. Additionally, the user made type generalizations and refactored the code base through type variable renaming and other internal restructuring.
foldshaskellchatlensesjoin
shachaf/mustardwatch
Jul 2020 - Sep 2022
Detect what files a program uses and rerun it when they change
Contributions:21 commits, 1 PR, 14 pushes in 2 years 3 months
detectrerun
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