Craig Zingerline

Founder @ Growth University & Growth Minded | CPO @ Sandboxx | Head of Growth @ Upside Travel

Alexandria, VA, United States (-05:00 UTC)from Rome, NY, United States
Growth marketing

I'm well versed in all aspects of growth including the Pirate Funnel (AARRR) strategies around Acquisition, Activation, Referrel, Revenue & Retention. I’ve helped dozens of companies with growth, and have lead teams of up to 15 people. Highlights: Helped a B2C company grow to over 1M subscribers in under 18 months, Helped a Travel company grow their user base by > 700% in 12 months, reduced CAC for a client by over 1000% in 12 months.


I've bootstrapped 3 companies to profitability and love looking at sustainable, organic growth strategies. If you need help thinking through ways to drive growth, I'm always happy to dig in.


Need help building an outbound strategy from scratch? I've built outbound strategies for B2B, B2C and eCommerce companies that have enabled inside sales teams (with some help from marketing) go from zero to millions in revenue. I've built sales lead processes from scratch, and have scaled sales orgs from just me though handing off to a team of sales reps.


I look at this as more than just SEO, and include referrals, SEO and content marketing as a comprehensive organic plan. Organic channels can be immensely powerful for your company regardless of stage, amount of capital raised, or revenue. I can help you define what levers you can pull to drive more organic traffic, what it takes from a time and team standpoint, and how to determine which areas to focus on first.

PPC strategies

I've built and run growth programs for Bootstrapped SaaS companies to Consumer companies with over $1M in monthly budget. I've worked across a wide variety of industries. I can help you maximize your ROI regardless of your budget, and implement the set of tools you can use across all paid channels.

Venting frustration

As a 6 time founder and advisor to dozens of companies I understand the ups and downs of startup life. If you need an ear to vent into, I'm here to help. Cash flow issues? Team challenges? Co-Founder quit? Market shift under you? Competitor steal your idea? Been there! Happy to be an ear or provide guidance - or both.

Product market fit

Having PM fit is critical before you start trying to scale your business. If you try to grow fast before you have product market fit, you'll likely waste time and money. Or worse - you may never get off the ground. I've learned this the hard way after trying to scale a startup before we had PM traction, luckily figured it out in time, and grew slower but smarter - eventually scaling.

Product management

I've built over 100 sites and apps in my 20 year career, and am currently Chief Product Officer at Sandboxx. I'm a regular speaker at Product School events, and run a Product Bootcamp for entrepreneurs looking to get their product to market. I believe great products need great growth, and I tend to look at product development from a growth mindset from the start. I also generally advise on building market testable features, and launching early to get feedback from real users.

Email marketing

I started my career as an engineer at an Email Marketing company, so I know the industry well. As a growth/product lead, I've: grown an engaged email list by over 650% in 12 months for a B2B company, built an email list from 0 to 50k in 6 months for a B2B company, increased open rates by over 50% through A/B testing for a B2C company, increased CTRs for a B2C company by >300% for a B2C company. I know the ins and outs of deliverability, list growth, activation & more.

Advice on funding

As a founder I've raised over $2.5M for startups across B2C and B2B. As an advisor I've helped companies raise another few million. I spent some time managing one of the most prominent Accelerator's in the USA (LAUNCH) and as a result vetted and did diligence on dozens of companies. I understand what investors are looking for, how to build a strong and compelling deck, and how to get your company in front of investors. I'm also a small investor myself.

Mentor Toolkit
13 years of experience

I've been using the platform for a number of years, and have run projects ranging from small bootstrapped company work though mid-market and up market planning, roadmapping, and task allocation.

5 years of experience

I've been using Looker for a while, and have experience with using Looker for tracking analytics, retention, for data pulls, reporting, and integrations with various 3rd party data feeds and more.

Google Data Studio
5 years of experience

I've been using Google Data Studio for a while, and have experience with Data Studio data pulls, reporting, and integrations with various 3rd party data feeds.

9 years of experience

I've used Hubspot a couple times in high growth startups to help with inbound, outbound, and full funnel / CRM based marketing programs. I also understand some of Hubspot's limitations, and areas to steer clear of.

12 years of experience

I've been using MailChimp for a very long time and know all about their moves into marketing automation as well. From creating and segmenting lists to running split tests on subject lines, I understand the ins and outs.

8 years of experience

I leverage Mixpanel for event tracking, cohort and retention analysis, funnel analysis and more. I've helped both consumer startups as well as gaming companies, and even SaaS platforms scale by leveraging Mixpanel. I'm comfortable setting it up, optimizing it, and creating the reports you need to make sure you're on the right track.

Reviews (66)
Harry Haines
1 session
23 Sep 2021

Loved the energy, kept it very professional and made it easy for me to understand the next step.

Brian Li
1 session
2 Sep 2021

Craig offered a lot of clarity on the direction i needed for my client acquisition strategy

Ashley Bailey
1 session
19 Jul 2021

Great knowledge and super straight-talking, the allotted 15 mins was the only problem!

Sean Sarram
1 session
15 Jul 2021

Craig is very knowledgable and offered some quick insights and confirmations. I may need to book a longer session to dig a little deeper in the future, but he knows his stuff.

Igor Klibanov
2 sessions
17 Jun 2021

This was my second call with Craig, and he was a great sounding board for the many ideas that I have. He helped narrow down my ideas to help me focus my efforts.

Johnny Ratcliffe 小雨
1 session
14 Jun 2021

Thanks Craig. Craig gave me clarity on what the biggest bottleneck to overcome is and was insightful speaking to him. Thanks again. Johnny

Gilad Kahala
1 session
13 Jun 2021

Thank you

Rishabh Bhandari
1 session
10 Jun 2021

Craig helped me identify which channels should I prioritize to generate more leads and how I can productize my services to scale it up. He shared a lot of examples from his own venture on how made the revenues more predictable. Thanks Craig for your time

Igor Klibanov
2 sessions
3 Jun 2021

I set up a call with Craig, to get some clarity on the direction of my business. I had a lot of ideas floating around, and he helped narrow it down, after listening to my strengths and weaknesses.

Joe McGregor
1 session
13 May 2021

In 15 minutes, Craig expanded my mind by asking insightful questions and providing an additional perspective on various components. I am walking away with tremendous value!

2 sessions
13 May 2021

A session with Craig was really productive and informative. He told me in detail about raising investment and steps to follow to be successful in that.

Armel Beaudry Kembe
3 sessions
12 Apr 2021

I had a great time chatting with Craig. Short but meaningful!

Armel Beaudry Kembe
3 sessions
5 Apr 2021

It was great exchanging with Craig. Super knowledgable and I will 100% recommend!

Harry Edmeades
1 session
15 Mar 2021

Short but informative call - good takeaways and advice for where I am in my project. Recommended.

Sophia Benhaddou
1 session
13 Mar 2021

Craig gave me solid and straightforward advice on a mailing campaign to reactivate churned users. It felt like it was exactly what I needed to hear but I wouldn't have thought of it myself. Thank you Craig!

2 sessions
10 Mar 2021

Craig is a growth wizard! He gave solid inputs and is one of the top mentors on the platform. Highly recommended for anyone looking to build a growth model and scaling their company.

William A.
1 session
9 Mar 2021

We had a very productive meeting. He discussed his experience working with startups in a similar phase as ours and then provided some very valuable feedback. Got a lot of insights about cold outreach, pricing, and campaign channels. Thank you very much Craig for your time.

Dustin Overbeck
1 session
8 Mar 2021

I had a great call with Craig. He was able to give me some new input to things that I wasn't really familiar with regarding raising money. Since my situation is a bit unique (by having a lot of existing potential customers), Craig gave me a direction to look for finding answers.

James Titchener
1 session
10 Feb 2021

Craig gave me a ton to think about for the time we had together. Will schedule another call with him once I've put some of what he offered into practice.

1 session
8 Feb 2021

What a valuable session. We specifically asked about engaging our clients long term and how to create more focus in our business. Craig is very easy to talk to, he quickly understood our business and he had a lot to offer (including some sound reminders we needed to hear). Overall - really appreciated our time. We hope to talk to him again soon. Thanks Craig! :)

Greg Weinstein
2 sessions
4 Feb 2021

Craig is a rock star mentor. 15 minutes with him is like 150 minutes with anybody else

Nick O'Connor
1 session
3 Feb 2021

Craig is great. I was amazed at how much we covered in our session. He instantly understood the challenges I face. The advice he gave helped me to structure our go to market plan. I have also followed up with his Growth 101 course and the materials are excellent. I would highly recommend talking to Craig. I will be doing so again.

Radu Benga
1 session
27 Jan 2021

Just had a short talk with Craig, and the value that I got out of it was really great. He understands what it means to build a startup in the early stages and he gave me some really practical advice that we can apply today, in our startup.

Ashok Kola
2 sessions
20 Jan 2021

Craig was very straight and simple in giving good advise. Must recommended.

Carrie Weidner
1 session
15 Jan 2021

Craig was great - he was thoughtful and specific about his advice and very easy to talk to. He provided clear ideas for how I can take action to develop my business intelligently.

Oskar Söderlund
1 session
14 Jan 2021

Great talking with Craig about some email marketing since I've had issues with emails going to the spam filter. Great thanks for the advice!

Don Mettler
1 session
5 Jan 2021

It was great talking with Craig. He made very good points and gave me new energy to keep things going.

Justin Harris
1 session
21 Dec 2020

Great session with Craig. He knows his stuff and has done it before. Would highly recommend it!

Sammy James
1 session
23 Sep 2020

Craig possesses deep knowledge on SEO and content strategies. This call saved me a ton of time and gave me confidence to move forward with the right strategy for where we are in the process. Thanks Craig! Look forward to speaking again soon.

Mukai Selekwa
1 session
22 Sep 2020

Gave great advice when it comes to managing a team to accomplish and fulfill different objects.

Blair Morrison
1 session
22 Sep 2020

Really helpful to just bounce ideas off of and honestly more than anything to realize I haven't tested enough yet and there is still a lot of marketing to do. He also helped me set my time expectations for results from a marketing campaign, which I think is going to be really important.

Jim Pawell
1 session
11 Sep 2020

I have now spoken to 5 Growth Mentors. Craig was the quickest to home in on our key issues and provide high-impact advice like: "Track churn by monthly cohort so results from experiments are clear; and given the service you are having to provide your price is too low; talk to your power users, learn what value they are receiving and focus on getting more of them. Let the others users/non-users go." Great session!

Armel Beaudry Kembe
3 sessions
12 Aug 2020

I had an amazing conversation with Craig. He is super knowledgeable. I will strongly recommend 1000%

Ashok Kola
2 sessions
7 Jul 2020


Steffen Baumgarten
1 session
2 Jul 2020

Craig understood the problem for which I was searching advice right away. He took the time to really understand the details and then, based on a vast variety of business experience, gave excellent input to solve the problem at hand. Having applied his approach already we are now many steps further on our way to build a big successful company. I am looking forward to exchange about this journey with Craig much more often in the future. He is truly a unique and extremely valuable source of knowledge, experience and skill!

Shubham Sharma
1 session
18 Jun 2020

straight to the point ! It was amazing to get Craigs point of view and advice ! Loved my session with Craig

Anthony Wilson
2 sessions
12 Jun 2020

Craig gave robust advice. He distills information quickly, challenges your process and offers targeted and very relevant suggestions.

Nathan Chandler
1 session
11 Jun 2020

Craig listened carefully to my SEO / marketing dilemma and pitched in a few ideas for correcting my course. You can tell he knows his stuff and I'm glad I was able to connect with him.

Ayhan K. Isaacs
2 sessions
22 May 2020

Love speaking to Craig. He knows how to talk you through important decisions and make you look at it from a different perspective. Great guy!

Roger Yelvington
1 session
20 May 2020

Craig knows his stuff and set some expectations - will look forward to another call for a progress checkin :)

Vito Margiotta
3 sessions
17 Mar 2020

Awesome as always!

Vito Margiotta
3 sessions
5 Mar 2020

Spectacular as always

Jan Kuzel
2 sessions
1 Mar 2020

Had another productive session with Craig about SaaS metrics where he helped me narrow down what we should to next.

Ryan Prior
1 session
28 Feb 2020

Craig was very helpful, and quickly identified areas for improvement for retention-based-growth :) thank you!

Michael Hoeft
1 session
15 Feb 2020

Craig is patient and an amazing communicator.

David Wenner
1 session
13 Feb 2020

Craig was very attentive to the issues we are currently facing with building our business. He offered me a number of different ideas about how to move forward which I am interested in pursuing. Left me with the impression that Craig has valuable knowledge in the Growth Hacking area. Was a pleasure to spend the short time with him.

Ayhan K. Isaacs
2 sessions
7 Feb 2020

Craig has so much knowledge. We spoke about strategy and positioning around agencies. It was very informative, educational and valuable. Excellent person to chat with if you are "stuck".

Teresita Sánchez
1 session
6 Feb 2020

Craig really helped me plan our first investor deck. We don't know many startups that have gone through the process of raising money in the US so his insights were very helpful in getting us started.

Greg Weinstein
2 sessions
17 Jan 2020

Craig was inspirational, motivational, empathetic, and practical all at the same time. He delivered everything that Growth Mentor claims to offer -- quality time with smart people who have "been there / done that" and considerate enough to pay it forward.

Aravindh Sridhar
1 session
16 Jan 2020

Craig is an expert who can certainly hit the nail on the head and drive the point home in a super effective manner. He gave some insights on some super hard questions that I threw at him. I seriously believe the advice he gave would save me at least 7 figures down the line and I seriously look forward to collaborating with him in the future. Thanks Craig!

Nancy Shenouda
1 session
15 Jan 2020

Craig was an amazing help for me. I explained where I am at in my business and he gave me the much needed advice on what I need to be focusing on to launch my business. I felt I needed to do too many things, but he reassured me where I need to spend my time to get the most out of my business in the long term. Great mentor!

1 session
11 Jan 2020

Craig did an amazing job of getting to know me and my product ideas, to help me find clarity on my goals, methods, and next steps.

Jan Kuzel
2 sessions
10 Jan 2020

Craig helped me review our SaaS metrics and gave me experienced opinion on where our biggest opportunity is. I originally came to the meeting with different thesis, but he turned it upside down. It was very helpful to walk someone through the whole funnel numbers and get reference for what is normal and what is not at each stage.

Maria JD Sirotkina
2 sessions
8 Jan 2020

This was my follow-up session, and we digged deeper in priorities and strategies for growth. It was great, because Craig already knew my business a little bit, so I got so much more out of this: a revised opinion, more tips and accountability. Would love to speak again! Always a 5-star.

Nichole Elizabeth DeMeré
2 sessions
20 Dec 2019

Fantastic! Very knowledgeable. Very helpful. We learned a lot about Craig's workflows for customer discovery research.

Shelby Stephens
1 session
15 Dec 2019

Awesome! Craig is extremely knowledgeable and very helpful.

Sean Choi
1 session
6 Dec 2019

This was my first Growth Mentor call and it could not have been better! Craig's perspective on the challenges I have been facing in a new Head of Growth role was invaluable and I am extremely grateful to have had the opportunity to connect with a clear leader in the field.

Jacob Elbaum
1 session
28 Nov 2019

My call with Craig was fantastic. He's knowledgeable, full of insight, extremely helpful and super focused on the goals/areas that I requested assistance in. I came to him with a link building idea which I thought he'd have limited input on since he has limited context (he doesn't work for the company, I do), but yet, he surprised me with some fantastic ideas that I plan to implement in the coming 2-3 months. Thanks Craig!

Evgeny Korolev
1 session
5 Nov 2019

Craig gave me some useful ideas about developing my project and showed the main priority to concentrate on.

Carlos Federico Munoa Gimenez
1 session
4 Nov 2019

Craig was great. He explained to me where I should be focusing my time, and how to evaluate our next move. We agreed on having another session later on in a couple of months.

Foti Panagiotakopoulos
1 session
4 Nov 2019

Great call! Did a screenshare and showed Craig the staging server of the new release of GrowthMentor onboarding and did a live teardown of the onboarding wizard. Then we talked about product/packing/pricing strategies and ended the call discussing future product ideas. Overall excellent call. Can't recommend Craig highly enough. If you're looking for a no-bullshit straight shooter with *real* experience in product, book a call.

Maria JD Sirotkina
2 sessions
2 Nov 2019

Loved the session. Gave me a true sense of clarity and just a different perspective. Made my week. Craig asked tons of questions before diving into recommendations, and then was very clear about giving his point of view. I would absolutely recommend speaking to Craig if you need a well-rounded view of your business, and a of product development chunk specifically. Thanks Craig!

Hector Hughes
1 session
30 Oct 2019

Brilliant call with Craig! Such a nice guy with a fantastic knowledge of all things start-up. Couldn't recommend more highly! We spoke about positioning, marketing and launching a new venture.

Vito Margiotta
3 sessions
28 Oct 2019

Simply Wow! Not only a wondeful person, but also incredibly helpful. Thanks again!

Sarvy van Maris
1 session
23 Oct 2019

Craig was an amazing help. I have been struggling with my hiring problem for 20 years now. He offered different solutions and changed my way of thinking about contractors. I have started implementing his recommendations and am excited about the results. It was a relief and an eye opener to talk to someone who had the same experiences as me and to hear how he solved it and worked around it. I can't thank him enough.

Sandesh Hegde
1 session
17 Oct 2019

I had approached Craig for advice on fundraising and could immediately feel the infectious positive energy and he seemed more excited to guide us, he quickly reviewed the deck and advised us on some course correction and creating the proper investor pitch, he also gave us insights on the approach to customer development, I would highly recommend speaking to him.