Justin Smith

Employment

• Interim Managing DirectorRusticbison Investments Lda, Portugal2024-present
• Chief Technical OfficerSIBEX AG, Switzerland2019-2021
• Technical ArchitectSwisscom Blockchain AG, Switzerland2018-2019
• Chief Executive OfficerXMR Systems LLC, United States2017-2019
• Chief Technical OfficerElea Labs AG, Switzerland2017-2018
• Product ManagerMonetas AG, Switzerland2015-2018
• Coordinate Measuring Machine ProgrammerJohn Deere Inc (VAB Metrology), United States2012-2015
• Chief Technical OfficerIrikonji Dive Gear LLC, United States2012-2015
• Assistant Professor, AccountingUniversity of North Dakota, United States2012-2014
• Software SalesWolfram Research Inc, United States2010-2012
• Project EngineerEPC Automotive, United States2008-2010
• Operations SupervisorCaterpillar Inc, United States2007-2008
• Quality EngineerCaterpillar Inc, United States2006-2007

Education

• Master of Business AdministrationUniversity of Illinois Urbana-Champaign, United States2010
• Bachelor of ScienceIllinois State University, United States2006
• Associate of ArtsHeartland Community College, United States2004
• High School DiplomaUniversity High School, United States2002

Certificates and Awards

• National Institute of Standards and Technology, Lean Manufacturing2006
• Society of Manufacturing Engineers Certification2006
• Real Estate Broker License2008
• University of Illinois at Urbana Champaign Business School, Fastest Entrepreneur2009

Notable Projects

Peer to Peer Exchange (2019)

CLI, GUI, and APIs for untrusted peer to peer exchange of Bitcoin and Ethereum.

Peer to Peer Wallet (2017)

• Designed, co-architected and delivered the first open source Monero wallet for iOS (X Wallet).

E-commerce Site (2012)

• Designed and programmed the site in PHP, HTML and CSS.
• Built bank card, PayPal and Bitcoin payment methods and the user authentication system.
• Built the product index, cart management and order confirmation email features.

Selected Writings

• Using CLTV Time-Locked, 2/2 Multi-Signature P2SH Bitcoin Contracts in Practice2023-03-10
• Improving OTC: Modeling Non-Deliverable Cryptoasset Perpetual Contracts2023-03-10
• Smartphone Cryptocurrency Wallet Scorecard (Zcon0, Montreal)2018-01-01

References

• Professional reference, SIBEX2021
• Professional reference, Monetas2016
• Primary School1995

Interests

Technology

• OpenBSD and home network system administration.
• Amateur radio, callsign NF1H, formerly HB3XRS.

Sport

• Swimming, tennis, golf, sailing, skiing.

Violin

• Seafaring Fiddler (ongoing)2026-07-04
• Bach, Concerto for Two Violins, Movement 1, Violin II2025-10-08
• Vivaldi, Concerto in A Minor, Movement 32025-08-10
• Vivaldi, Concerto in A Minor, Movement 12025-06-10
• Vivaldi, Concerto in G Major, Op. 3 No. 3, Movement 22025-03-22
• Vivaldi, Concerto in G Major, Op. 3 No. 3, Movement 12025-03-22
• Rieding, Rondo, Op. 22 No. 32025-02-04

Reading

• Herman Melville, Moby Dick2026-08-10
• Xenophon, Anabasis2026-07-02
• Xenophon, Memorabilia2026-06-01
• Plutarch, Lives I2026-05-08
• Herodotus, The Persian Wars2026-04-20
• Apollodorus, The Library I2026-03-01
• Aristotle, Politics2025-12-08
• Homer, The Odyssey II2025-11-01
• Homer, The Odyssey I2025-10-25
• Apollonius Rhodius, Argonautica2025-10-02
• Hesiod, Theogony2025-06-08
• Manetti, On Human Worth and Excellence2025-05-19
• Homer, The Iliad II2025-05-15
• Homer, The Iliad I2025-03-22
• Epictetus I2025-03-22
• Novum Testamentum Graece2025-03-01

Memberships and Associations

• Singapore Golf Association2025-present
• Swiss Alpine Club2015-2021