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About the Author

Viktor Jevdokimov, Vilnius, Lithuania — Creator of 3in3.dev, HCS, and 3SF

Viktor Jevdokimov is a software engineering leader, systems thinker, and framework designer with over 30 years of experience in software product delivery, modernization, and team alignment.

He is the creator of the Human Cooperation System (HCS) and the 3-in-3 SDLC Framework (3SF), and founder of the 3in3.dev initiative — an independent platform dedicated to advancing collaboration and alignment between Client, Vendor, and Product ecosystems.

Professional Background

  • Began career supporting distributed banking software on DOS and Windows, developing a deep appreciation for troubleshooting and system design.
  • Progressed through roles of developer, architect, delivery lead, and practice lead, working with international clients on modernization and cloud migration initiatives.
  • Specializes in Client–Vendor relationship design, project leadership, and delivery system diagnostics.
  • Advocates for “Context before Method” and “Trust before Control” as guiding principles of effective collaboration.

Creative and Personal Work

Beyond software, Viktor is an active musician and live sound engineer, performing and mixing with the Great Things cover band.
He approaches both sound and systems with the same mindset: striving for clarity, balance, and authenticity.

About 3in3.dev

3in3.dev is an independent research and publishing initiative founded by Viktor Jevdokimov.
It consolidates his experience and experimentation into open frameworks that help organizations improve how they engage, deliver, and measure value across collaborative ecosystems.

3in3.dev publishes:

  • The Human Cooperation System (HCS) — theoretical foundation for cooperative system design.
  • The 3-in-3 SDLC Framework (3SF) — practical application of HCS principles in software delivery.
  • Supporting tools, templates, and learning materials under an open license.

“These systems aren’t about control — they’re about clarity, trust, and the shared intent that makes collaboration work.”
— Viktor J., Creator of 3in3.dev

© 2025 Viktor Jevdokimov, Vilnius, Lithuania / 3in3.dev
Licensed under CC BY 4.0 International.
Connect and follow on LinkedIn for updates and professional discussions.
For contact, collaboration, or speaking requests, visit https://3in3.dev.