Oscar Elleseff Consulting

For Private Equity & Venture Capital Operating Partners

A Portfolio CIO/CISO for PE- and VC-Backed Healthcare and Life Sciences Companies

Proven inside live PE-led M&A and integration work, ready to deploy across portfolio companies — the same way many firms already use a portfolio CFO.

Proven, Not Aspirational

Direct PE-as-buyer precedent: at PRISM Vision Group, vetted and hired directly by Quad-C Management as CIO — the exact portfolio-deployment pattern this practice is built around.

Live PE-led integration experience: as Interim CIO at Summit Health, led through its merger with CityMD, a deal led by Warburg Pincus — direct experience inside a major PE-led healthcare consolidation, not just steady-state operations.

Sustained PE-backed fluency: current consulting engagements include PE-backed healthcare and life sciences platforms, described by sector and outcome to respect client confidentiality — demonstrating ongoing comfort with PE-backed governance, reporting cadence, and value-creation pressure.

Why Speed Matters

In a deal or integration timeline, the most valuable thing a technology or security executive can offer is fast, accurate diagnosis — not a slow audit. That's the core capability this practice is built around, on the technology side and the security side alike.

Thinking About Capacity

Engagements run roughly two to three days a week per company — the unit to think in when considering deployment across more than one portfolio company at a time. Beyond three days a week, an organization typically needs a full-time hire rather than fractional support.

How Engagements Begin

Assessment-First

A focused capability or security assessment identifies what's actually wrong, informing a clear roadmap or program before ongoing execution begins — useful when diligence or integration timing calls for a defined deliverable.

Assessment-Through-Practice

For situations that call for moving immediately. Work begins directly on current priorities, and an accurate picture of the organization builds through the work itself.

Get in Touch

If you're evaluating technology or security leadership for a portfolio company, let's talk.

oscar@oscarelleseff.com