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.
Books
126 Steps to Becoming a Successful Entrepreneur:
The Entrepreneurship Fad and the Dark Side of Going Solo
Earlier work on business systems and execution discipline. The focus today is technical value creation inside PE-backed and mid-market companies.
Strategic goals. Tactical objectives.
I take an operational approach to accelerate leadership development and propel business forward.
Testimonials

Paul MacMartin
Technical Writer, 25+ Years of Experience
Quite a good call.
Mario bracketed the issues really quickly and then gave me project suggestions that I could understand. I’m not saying I’m slow, but Mario just has a clear way of expressing things, to the point where I’m going to be able to plug things right into my project. I’m finding that Clarity is becoming a kind of board of directors that helps me make smarter decisions *before* I spend money, instead of after.

Asad Kausar
SR Manager R&D, VMWARE
Highly helpful!
Mario is a professional that wears several hats on any given occasion. WordPress developer, business advisor, business growth strategist, educator, and content marketing strategist are just some of the areas he has expertise in. He has been highly helpful in helping us better understand our business processes and consequently, improve as a company. Look forward to working with Mario well into the future.

Mel Stewart OLY
CEO & Co-Founder SwimSwam.com 2x Olympic Champion
Professional and fast!
Mario is a wordpress magician. From day one his impact on our business was immediate. We run a media platform with intense daily deadlines and 80+ clients to service, and we desperately needed his skill and service to continue to grow. I love Mario–because he has saved and made our company money. He’s professional, fast and I sleep well at night knowing he (via DevriX) is at the controls.

George T.
Founder of ThriveMyWay.com
Experienced in many fields!
I worked with Mario for 18 months. He’s experienced in many fields, including SEO and Link Building. This made our working relationship easier. He had realistic expectations and good attitude. I had really good experience working with him and his team at DevriX. I’ve never stepped into their office but just by communicating with the DevriX team members it looks like they have a nice work environment. I can recommend Mario – he’s a very nice client and an employer. Also, if you’re young and ambitious and looking for a mentor I guess that Mario can give you some pretty good tips if you’re around him.

Ivet Petrova Madzharova
Marketing Director, ShapeBlue
Skillful and innovative.
During my career as a Marketing Manager, I have been in touch with many web design companies and SEO experts from Europe. Noone managed to make a better impression on me than Mario. He is a skillful, innovative, and knowledgeable CEO. His pieces of advice are very professional and show he knows pretty well what he is doing. I recommend him and his agency as a reliable and trustworthy partner.

Adam Sewall
Density Vice President, Global Sales and Channel
You won't be disappointed.
I can’t say enough positive things about Mario and the teams he has built over the years. He’s attentive to detail, but also cares about/understands the big picture. He pushes hard to hit deadlines, but is also comfortable pushing back when requirements aren’t clear or user stories need further refinement. And, most important, he genuinely cares about the quality of the end software product – both in terms of its performance (speed, UX, overall design) and its impact to your business. Hire Mario, talk with Mario, get coffee with Mario, read Mario’s books – you won’t be disappointed, in any case.

James Ashford
Founder of GoProposal & OverSuite
Sound advice.
Mario is highly knowledgeable and has supported us in the growth of our business at two key junctures, giving us sound advice and guidance both times.

Iva Koberg
Founder, Winds+Water
Highly recommended!
Mario is a professional, super responsive and provided immediate expert guidance and answers in half the scheduled time!

Raymond Friedman
CEO, Mile2
Superb!
We hired Mario on an emergency training/consulting job for 3 weeks and he was simply superb!

Georgi Rusev
SR Manager R&D, VMWARE
Perfect!
I have worked with Mario on establishing a training program for engineers in our Quality Engineering department.

Jon Reed
Co-Founder, digimonica.com
Invaluable!
I’ve been working with web design firms since the mid-90s. Mario’s firm DevriX is the best I have worked with by a wide margin. Their ability to customize high-performance WordPress sites is exceptional. They bring a spirit of collaboration to their work, as well as taking initiative on the virtual project management. Mario has been responsive and has really taken the time to understand out business model. Some of my best interactions with Mario have nothing to do with pending projects but with big picture issues and strategies we need to be thinking about. He’s offered us candid feedback which I find invaluable. A real pro to work with

Stoyan Panayotov
CEO of Digital Expert
Instrumental connection!
Connecting with Mario was instrumental to resolving some pain points with one of my businesses. Having spent a decade as a business executive and a serial entrepreneur, I’m quite confident in the best practices of launching and growing a company. That said, niche expertise across different verticals and segments of operations, management consulting, and delegation that Mario assisted with made a notable difference for our roadmap in 2021. I definitely recommend Mario as a business advisor for service B2B organizations looking for growth or support with business process management. His insights were worth 320x his fees!