Serhii Antoniuk

Chief Executive Officer LITSLINK

Last Reviewed: September 19, 2026

Executive Summary

Serhii Antoniuk is the Chief Executive Officer of LITSLINK, a custom software development company headquartered in Palo Alto, California with its engineering operation in Ukraine. He joined in 2016 as Chief Operating Officer and was promoted to chief executive in 2018. He came up through the work rather than around it — starting as a hands-on developer and team lead, spending roughly nine years at the media technology company Adstream, and serving as executive director of a Ukrainian consulting firm before moving into the role.

Career Highlights

• Joined LITSLINK in 2016 as Chief Operating Officer and became Chief Executive Officer in 2018.
• Leads a custom software development company serving startups and established brands globally, spanning mobile and web development, AI, machine learning and blockchain.
• Spent roughly nine years at Adstream, rising to Lead Project Manager.
• Served as Executive Director of 12 Quarters Consulting Partners in Ukraine.
• Began his career as a software developer and team lead, in C++ and later ASP.NET.
• Holds a Cisco Networking Academy network engineer certification alongside his computer science education.

Professional Journey

Antoniuk trained in computer science, attending the National Technical University of Ukraine’s Kyiv Polytechnic Institute and taking a Bachelor of Science at the Branch Computer Academy IT Step in Dnipropetrovsk, along with a Cisco Networking Academy network engineer certification. He began his career writing software, working as a C++ team lead and later as a senior ASP.NET developer at Dev Zero G.

From 2007 he spent roughly nine years at Adstream, the media and advertising technology company, rising to Lead Project Manager. Adstream’s business is the management and distribution of advertising assets across markets and formats, which is unglamorous and operationally demanding work, and a long tenure there is a grounding in delivery under real client pressure rather than in technology for its own sake. He then served as Executive Director of 12 Quarters Consulting Partners in Ukraine.

He joined LITSLINK in 2016 as Chief Operating Officer and became Chief Executive Officer two years later. The company operates on the model that has made Ukraine one of the significant centres of software outsourcing: a US-facing commercial presence, in this case Palo Alto, with the engineering capability based in Ukraine. Its services span mobile and web application development alongside artificial intelligence, machine learning and blockchain work, serving both startups and established brands internationally.

His progression from developer through project management and operations to chief executive is the pattern that tends to characterize successful services businesses, where the chief executive’s credibility with both engineers and clients rests on having done the delivery work personally.

Education

National Technical University of Ukraine, Kyiv Polytechnic Institute

Attended

Branch Computer Academy IT Step, Dnipropetrovsk

Bachelor of Science