About — Gintautas Mežētis
Two decades translating between Legal, Business, and Data-IT.
Across two decades and seven sectors, the same patterns keep showing up. The structure is already there. It’s just not visible from inside any single domain.
Vilnius, Lithuania · Working with organizations across Europe
The work
I’m a thinking partner for leaders navigating decisions where Legal, Business, and Data-IT all need to be in the same conversation.
Most of the work isn’t producing answers. It’s asking the questions you haven’t been able to ask, naming the patterns you’ve been sensing but couldn’t articulate, and mirroring the structure that was already there in your organization back to you so you can act on it.
The output isn’t a deliverable. It’s your own clarity. You leave seeing your domain differently — and you keep seeing it that way long after our conversations end.
Current roles
What’s active, right now.
The advisory practice is the centre. Around it: board seats, teaching, mentoring, and angel investing — each one a different vantage point on the same set of problems.
Founder
Strategic advisory, governance, digitization, analytics, AI implementation.
Board Member
Decision-making and strategy implementation. Vilnius, hybrid.
Board Member
Lithuanian Business Angel Network — community of angel investors backing early-stage growth companies.
Lecturer (Senior Team Lead)
1-on-1 sessions with students working through Data Analytics and Business Analytics programmes. Ages 18 to 55+, many career-changers. The teaching is direct and personal — one mind at a time.
Member
Angel syndicate and startup board member network.
Club Mentor
Business club for entrepreneurs.
Angel Investor
Independent investments in early-stage companies.
Involved with
Fintech incident response / cybersecurity simulation event.
Path
How the practice found its shape.
- 2005
Sales Manager — SatGate Group
Launched a new iDirect satellite HUB platform. International sales and pricing for a complex technical product — the first sustained exposure to translating between engineering, commercial, and regulatory worlds.
- 2008
Sales & Marketing Director — SatGate Group
Strategic business development across global satellite and energy markets. Led the €35M business case for a 3MW Tier-class data center from idea to construction permit. Investment due diligence, financial simulation of energy and IT projects, crisis communication.
- 2019
Director — Information Society Development Committee
Lithuanian government IT at national scale. Consolidated infrastructure into a cloud-based delivery model. Initiated and led the country-wide authentication service for mass COVID-19 vaccination. Owned cybersecurity and continuity for nation-wide IT, including the Mano Vyriausybė portal and the open-data ecosystem.
- 2021
CEO — Paysera
Led a 300+ team in regulated fintech. Reorganized the 2nd line of defense, completed the regulatory remediation plan on time, prototyped an AI-integrated AML engine, refurbished document management. Profit moved from −€2.8M to +€7.5M over the tenure.
- 2024
Lecturer (Senior Team Lead) — Turing College
Teaching Data Analytics and Business Analytics to working professionals — 200+ mentees to date. WHY-first methodology: tool owner, not tool executor.
- 2025
Founder — Sitezem Lab
Independent advisory practice. Strategic advisory, governance, digitization, analytics, and AI implementation. Working with organizations where Legal, Business, and Data-IT need to behave as one system.
Learning path
The framework came from the work. The learning gave it a vocabulary.
A physics bachelor, an engineering year, a marketing exchange in Sweden, then a deliberate AI/Data run during COVID, then a master in Business Process Management. The framework itself is a synthesis of two decades across satellite, energy, government, and fintech — the formal study only put words on patterns the practice had already produced.
Formal education
Self-directed runs
AI & Data Science
Deep Learning Specialization (deeplearning.ai), Data Science Specialization (Johns Hopkins), Machine Learning (Stanford Online), Six Sigma Green Belt. The technical foundation behind the data-first culture at Paysera and the teaching approach at Turing College.
- Deep Learning Specialization
- Data Science Specialization
- Machine Learning — Stanford
- Six Sigma Green Belt + Analyze Phase
Business & Leadership
Business and Data Analysis (LUMIC), Low-code/No-code platforms (LUMIC), Leadership training (EKT), Startup Board Course (NGL), Mentorship course (idialogue). Translating from the technical run into commercial, board, and teaching contexts.
- Business and Data Analysis — LUMIC
- Startup Board Course — NGL
- Mentorship course — idialogue
- Leadership training — EKT
Infrastructure & Tools
Accredited Tier Specialist (Uptime Institute) during the data center years, then HubSpot inbound certifications, Python 3, and Advanced Power Searching with Google. The toolset behind the SatGate data-center business case and later transitions.
- Accredited Tier Specialist — Uptime Institute
- Inbound + Inbound Sales — HubSpot
- Python 3
- Advanced Power Searching — Google
— plus around twenty more certificates in adjacent areas. Full list available on request.
Where the work has happened
Sectors and domains across 20 years.
“Seven sectors” is the shorthand. The actual surface area is broader — each role usually covered three or four at once. The pattern recognition comes from that overlap, not from any one of them.
Primary sectors — deep, multi-year
Adjacent domains — substantial exposure
— the same structural patterns appear in all of them. That recurrence is the whole point.
An introduction.
A 30-minute conversation is how every relationship starts. No proposal, no pitch — just whether the problem and the practice match.
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