Marcin Wójtowicz
Haskell Software Developer at Input Output (IOHK)
Piaseczno, Masovian Voivodeship, Poland
Summary
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Rockstar🎓
Top SchoolMarcin Wójtowicz is a Haskell-focused software developer with a background in mechanical and aerospace engineering, currently contributing to Cardano’s networking stack and Mithril decentralized messaging at Input Output (IOHK). He brings practical embedded systems experience from developing C++ trackside and train communication software, and pairs that with functional-programming expertise in Haskell and Racket plus scripting fluency in Python and Bash. Marcin’s work spans protocol design, property-based testing, performance tuning and system monitoring, reflecting a pragmatic approach to distributed systems. Unusually for someone with a mechanical engineering degree, he has transitioned into core blockchain network development, blending hardware-near thinking with formally minded functional techniques. Based in Piaseczno, Poland, he leverages prior aerospace engineering rigor to tackle safety- and performance-critical software challenges.
2 years of coding experience
13 years of employment as a software developer
Bachelor of Engineering Mechanical Engineering, Bachelor of Engineering Mechanical Engineering at Stevens Institute of Technology
English, Polish
Github Skills (38)
command-line-interface10
ada10
cardano10
network-protocol10
blockchain10
network10
haskell10
consensus9
pipelining9
simulation-framework9
forwarding9
cryptocurrency9
protocols9
core-package8
cli8
Programming languages (8)
Github contributions (5)
crocodile-dentist/developer-portal
Feb 2025 - May 2026
The Cardano Developer Portal
Contributions:9 pushes, 1 branch in 1 year 2 months
IntersectMBO/dmq-node
Dec 2025 - Jun 2026
DMQ-Node is a diffusion layer for Mithril, based on Ouroboros-Network.
Contributions:4 reviews, 9 PRs, 39 pushes in 6 months
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