Growth Shuttle
Senior judgment, on the decisions that move EBITDA.
Growth Shuttle is the advisory practice of Mario Peshev. Technical due diligence, fractional operating work, and value creation for private equity and mid-market operators. A private equity investor who has founded six companies, exited two, and advised more than 500.














Our Story
Growth Shuttle is the advisory practice of Mario Peshev. A private equity investor who has founded six companies, exited two, acquired more than 40 businesses and digital properties, and advised over 500 since 2010.
He also founded DevriX, a 40-person firm that builds technology, data, and revenue systems, with $1.45B in GMV under management. The two are separate businesses, which means the advice here carries no obligation to buy the build.
He has advised organizations including VMware, SAP, CERN, and Saudi Aramco. When a decision needs an operator rather than a framework, this is the practice.
Solutions
Here are the most frequent topics that our clients contact us about.
Technical due diligence at deal pace. What is actually built, what breaks after close, and what it costs.
Diagnosis and a costed plan for a portfolio company that is not moving, with a fractional seat if you want one.
The engagements
Advisory runs from a single executive call through to a fractional operating seat. Technical due diligence on a portfolio company. A diagnostic that finds the missing plan. A retainer where I own a number alongside you.
Scope and pricing for every engagement are published in full.
Strategic goals. Tactical objectives.
I work as an operator inside private equity and mid-market portfolios, from technical due diligence through post-acquisition execution.
Testimonials

Elliot Johnson
CMO at Angel Reyes & Associates
Thorough platform relaunch with zero downtime.
“We rebuilt our website down to the foundation while it stayed live with no downtime. Restructured it so AI tools can read, understand, and surface our site correctly. Huge thanks to our partners at DevriX.”

Aly Wheeler
Senior Product Marketing Manager at Findhelp
Fast, reliable and flexible!
“DevriX hit every aggressive deadline, and even went above and beyond the original scope. They were incredibly receptive to changes and found great solutions for challenges that arose.”

Braden Keith
Editor-in-Chief & Co-Founder at SwimSwam
They went and overdelivered easily!
“When presented with an idea, the deliverable is often bigger, better, and cheaper than expected. The bigger the challenge, the better the results.”

Adam Sewall
VP Marketing at Verkada
You won't be disappointed.
“DevriX enabled us to deliver an entirely reimagined B2B website in under 3 weeks – from backend integrations to mobile layouts on the frontend, I was continually impressed with the team.”

Petar Nikov
Founder & CEO at Cloud Solutions
Beyond expectations!
“DevriX delivered a cost-effective multisite network before the deadline and fully within budget. All requested functions were incorporated – they even exceeded expectations.”

Zaira Soto
Project Manager at Dabaran
Real expertise and professional delivery!
“Since Dabaran partnered with DevriX, they’ve demonstrated real expertise. They aim to provide excellence with a high level of professionalism.”

Sean Tierney
Director of Sales & Marketing at Pagely
Long-term strategic partnership.
“We went from a 36-core machine at almost $6,000 a month down to a four-core machine at $1,000 a month. They were doing significant traffic – 30M+ pageviews per month – and hitting a wall with scaling. We paired them with one of our trusted agency partners, DevriX.”

Kris Gunnars
Owner and CEO of Authority Nutrition
Reliability that protected the business at scale!
“At over 10 million visits a month, reliability was a business risk, not a technical one. DevriX led the migration, and the stability problems stopped.”