Oshri Cohen

Hey, I’m Oshri Cohen — Fractional CTO turned full-time tech whisperer.

I’ve spent the last 25 years immersed in engineering, and the last 15 leading brilliant (and sometimes delightfully chaotic) teams as a technical executive. From scrappy startups in healthtech and martech to 350-person research firms and Series C rocket ships, I’ve done it all: scaled orgs, refactored disasters, rescued investor confidence, and shipped things that didn’t catch fire on launch day. Wins all around.

30 companies in 4 years as a Fractional CTO? Yep. That’s not a typo. I embedded myself in each like a method actor in a startup biopic, just without the Oscar, though I’ve definitely made acceptance speeches to my dog. I solved mission-critical problems, rearchitected platforms, hired and levelled up teams, and created product strategies that actually made sense. And money.

At my core, I’m a systems thinker. Whether I’m rebuilding a microservices architecture, designing OKR cascades across dev teams, or explaining to a founder why their dev team is two PRs away from mutiny, I bring clarity, structure, and technical depth without the buzzword bingo.

Tech Stack? I could rattle off a list as long as your LinkedIn scroll: Python, Golang, React, gRPC, Kubernetes, Postgres, DDD, CQRS, EKS, Redis, you name it. But the truth is, I treat tech like tools, not religion. What matters more is why we’re building something and who we’re building it for. And how fast can we deploy without breaking production? (Or spirits.)

I help engineering orgs reach Elite DORA status in months, not years. Devs love working with me because I obsess over DX: If you can’t boot the stack with one command in under five minutes, we fix that. I also enforce quality through intelligent code review delegation and AI-assisted tooling. Let’s just say, if your platform smells like legacy spaghetti, I’ll turn it into clean lasagna.

If you’re building something great or something messy but full of potential, and you want a tech leader who can code, coach, scale, and simplify, let’s talk.

Co-Founder of leaf.page

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David Dyer

Simplifying the complex | CIO | CTO | Strategist | Business Advisor | Leadership Advisor | Mentor | Interim and Fractional Consultant | Troubleshooter | Turnarounds | Transformation

Board Advisor & NED for PE-backed and high-growth businesses. Orchestrating strategy across the P&L to drive EBITDA growth, turnaround and exit readiness.

I operate at board level – translating investor expectations into operational reality, providing governance that turns underperforming assets into exit-ready winners. Always have.

**Board-level impact:**
- Strategic orchestration aligning CEOs, leadership and investors around value creation
- Transformation roadmaps that accelerate EBITDA and avoid costly missteps  
- Chairing board committees (Portfolio & Transformation at Crew Clothing)
- Governance of operating model, leadership and technology for exit multiples

**Proven outcomes:**
• Chaired Transformation Portfolio Board, aligning strategy/tech for commercial growth
• Secured £50m+ board-approved transformation: revenue £150m → £400m+, PE exit
• Reversed -£20m EBITDA to breakeven (12 months) → leveraged MBO/PE exit
• Grew EBITDA £2m → £10m EBITDA (2years) vs historic £2.5m peak over 25 years
• +33% YoY sales (10 months) through P&L-wide operational reshaping

**Building focused portfolio of Board Advisory and NED roles** with PE-backed and high-growth businesses.

Let's discuss board-level orchestration for your next value creation phase.

david.dyer@peppercornhill.co.uk

CIO/CTO/CISO/Director • Board Advisory • Strategy • Transformation • Turnaround • Business Mentor

Providing Interim and Fractional Consultancy - Peppercorn Hill is my Limited Company where I work with Organisations to deliver Interim Management,  Transformation & Change expertise, Programme & Project Management, and Strategy Consulting. I 
work closely with clients to define and deliver organisational outcomes, drive change, turn around initiatives, and save costs.

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