Fractional CTO and COO services for Pre-seed to Series B startups and angel investors
Marketplaces B2B/B2C SaaS Nonprofits Fintech GovTech Marketing Tech Social Enterprises AI/ML Music Tech ERP
MVP
We transform your idea into reality through the initial proof of concept phase
Funding
We prepare you for investor conversations and technical due-diligence
Growth
We take care of all internal needs so you can focus on your vision
Who is it for
We support angel investors and startup founders from Pre-seed to Series B
You’ve invested in multiple startups and noticed a common gap - execution.
We partner with angel investors to give portfolio companies the technical and operational leadership they need to grow.
Portfolio Support
Value Creation
Due Diligence
Exit Strategy
Your time is best spent building relationships and sharing your vision with customers, investors, and partners. We handle the technical and operational execution that makes that vision real.
From 0 ➤ 1
Lean/EOS Set-up
Investment Readiness
Growth and Exit
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40y+
Combined Experience
From startups to global, technology-backed enterprises, we’ve supported and built over 30 products.
30M+
Funding and Revenue
We’ve helped ventures raise capital, generate revenue, and reach sustainable growth.
70%+
Average Cost Reduction
Lean systems and processes that reduce overhead and increase performance.
250+
Employees Managed
Built and led diverse teams that stay aligned, motivated, and focused on meaningful outcomes.
Operations
Fractional COO
Operational excellence and process optimization to scale your business efficiently.
KPI's, OKR's, EOS Implementation
Chief of Staff Services
Recruitment and Onboarding Services
Talent Succession Planning for Growth
Operational Readiness for Investment
Leadership Development and Coaching
Venture Studio
Building Rocket Ships
We co-build startups with exceptional founders providing all the technology and operational needs to solve problems we're passionate about.
Loneliness and connection
Tech for good
Children safety and education
Technical infrastructure and AI
Privacy and trust
AI/ML Innovation
Technology
Fractional CTO
Technical leadership and strategy for scaling startups. From architecture to team building.
Technical Due Diligence for Investments
Scalability and DevOps for Growth
AWS and Cloud Service Management
Infrastructure and Tech Stack Planning
AI/ML Innovation and Development
SOC2 and Security Management
Services
WHAT THEY'RE SAYING
Libi has been a key partner in setting up our teams for long-term success. Her work in refining leadership development, improving training programs, and enhancing operations within key departments has laid a strong foundation for growth. Libi's ability to align our team with the company's mission, by creating transparent and efficient structures, has had a significant impact on our success.
Key partner in setting up teams for long-term success
Key partner in setting up teams for long-term success
Nicky Senyard, Founder & CEO
Fintel Connect
Nicky Senyard, Founder & CEO
Fintel Connect
Working with Sergei Berenson as our Fractional CTO was invaluable for ConnectionPoint. From day one, he brought clarity and focus to our technology strategy, quickly identifying the critical issues that needed to be addressed as we prepared for our next stage of growth and a potential exit. Sergei combined big-picture vision with hands-on execution, supporting our team through escalations, guiding implementation, and pointing out risks and opportunities before they became obstacles. His proactive approach, speed, and efficiency gave us confidence at every step. Beyond his technical expertise, Sergei’s ability to align technology decisions with business goals made him a key part of our journey during this pivotal stage.
Daryl Thompson, CEO
ConnectionPoint
Sergei brought clarity and focus to our technology strategy
Daryl Hatton, CEO
ConnectionPoint
Sergei brought clarity and focus to our technology strategy
Exceptional ability to turn vision into execution
Libi has an exceptional ability to turn vision into execution. As a Fractional COO and Advisor at BrainAI, she was instrumental in aligning our operations with our long-term strategy. Her unique ability to both lead and empower others, combined with a strategic mindset and calm, focused leadership, was exactly what we needed during a critical phase of growth.
Exceptional ability to turn vision into execution
Lior Tabib, CEO
BrainAI
Lior Tabib, CEO
BrainAI
Libi was a key part of the OneDay team and continues to be a dedicated mentor to founders. She not only supported mentors with care, attentiveness, and reliability, but also played a core role in shaping the mentorship mission and aligning it with the needs of founders. Libi was a true voice of reason, a flexible problem-solver, and a trusted sounding board. She built thoughtful processes to improve mentor performance and constantly worked to elevate the mentor experience and accountability. Her contribution left a lasting impact on both mentors and founders alike.
Libi is a true voice of reason, a flexible problem-solver, and a trusted sounding board
Libi is a true voice of reason, a flexible problem-solver, and a trusted sounding board
Mia Bennet, Head of Faculty
Oneday
Mia Bennet, Head of Faculty
Oneday
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Helped us uncover valuable insights
Libi helped us uncover valuable insights around the project we were working on. Her questions and guidance allowed us to surface what was really required to move forward.
Helped us uncover valuable insights
Joan Kanigan, CEO
Western Development Museum
Joan Kanigan, CEO
Western Development Museum
Libi's guidance was invaluable in navigating the many uncertainties that come with building a startup. She was always available when needed, offering thoughtful insights and strategic direction that helped us make informed decisions with confidence. Her dedication and mentorship played a crucial role in RentWorthy’s early development. Without her support, we may have faced significant challenges much earlier in our journey. I am incredibly grateful for Libi’s contributions and her commitment to seeing RentWorthy grow.
Without her support, we may have faced significant challenges
Without her support, we may have faced significant challenges
Christopher G. Stevens, Co-Founder & CEO
RentWorthy
Christopher G. Stevens, CEO
RentWorthy
We are here for you
Hi, very nice to e-meet you!
We’re Sergei and Libi Berenson, life and business partners based in beautiful Vancouver, BC. We’re builders, creators, and the ultimate support team who truly has your back. For over 20 years, we’ve combined passion, strategy, and hands-on execution to help founders turn ambitious visions into thriving ventures.
Our mission is to empower the next generation of technology founders, creating joy, connection, and lasting impact through every venture we help build.
© 2026 by Elevex Group™ Inc.
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We are known to be "TACHLES" - Direct, honest, and to the point. Trust and Impact is at our core.