Andri Möll
Founder at Billberry
Tallinn, Harju maakond, Estonia
Summary
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SeniorAndri Möll is a founder and seasoned software engineer with 15 years of experience building production-grade services from Estonia, currently running Billberry, an e‑invoice operator serving thousands of businesses regionally and globally. He previously led the technical effort behind Rahvaalgatus, an e‑democracy platform used by over one-fifth of Estonians to deliver 880k+ digital signatures, demonstrating deep domain experience in high‑impact civic systems. A pragmatic polyglot with a strong preference for developer tooling—Vim, Zsh, Tmux—and a prolific Haskell practitioner, he has written hundreds of thousands of lines of Haskell to solve real‑world parsing problems. Andri blends hands‑on engineering with product ownership, favoring reliable, auditable systems that scale in regulated environments.
15 years of coding experience
Stackoverflow
426reputation
155kreached
11answers
0questions
Github Skills (200)
xmldsig10
testing10
vim10
linter10
command-line-tool10
swiftui10
sinon10
browser10
mochajs10
azerothcore10
html10
dock10
email-server10
nodejs10
unit-testing10
Programming languages (25)
Github contributions (5)
moll/node-require-guard
Apr 2013 - Feb 2018
Contributions:41 commits, 1 PR, 3 pushes in 4 years 10 months
test-runnersrunnersprevent
moll/node-mitm
Mar 2014 - May 2021
Intercept and mock outgoing Node.js network TCP connections and HTTP requests for testing. Intercepts and gives you a Net.Socket, Http.IncomingMessage and Http.ServerResponse to test and respond with. Super useful when testing code that hits remote servers.
Contributions:173 commits, 17 PRs, 59 pushes in 7 years 3 months
nodejsremote-serverserver-responsesockettcp
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