Harri Thomas


London, United Kingdom of Great Britain and Northern Ireland (+00:00 UTC)from Melbourne, Australia

Keeping things lean and mean was the name of the game for the first 2.5 years of Respondent's life. As non technical co-founders, my colleague and I found ways to: - string together off-the-shelf products to test hypotheses - find low cost resources to fill gaps while we focused on sales - prioritize and strip back all non-essentials I'd be happy to share the journey and provide some ideas about ways you can do more with less.

Growth Hacking

Data, data, data. It's all growth comes down to. Focusing on collecting information from customers and potential customers, and prioritizing BI tools early in your companies trajectory will help you avoid some of the early pitfalls we encountered at Respondent. Always love to chat about data!

Advice on Funding

Respondent has raised 3 rounds of capital to date. By waiting to raise on our own terms, and with a clear idea about what we wanted out of a raise, Respondent was able to turn down a term sheet from a premier NY based VC fund - in favor of much more founder favorable terms elsewhere. I'd be happy to share my funding philosophy, and things to look out for as you begin the journey to accelerate your companies growth.

Product Market Fit

My background is in market research and marketing strategy. This stood me in good stead to take an insights driven approach to finding product market fit for Respondent. I'm of the strong opinion there's no better way to find product market fit than to speak with customers and potential customers. To get the most out of these conversations, a solid research plan is needed. This is where I can help!

Mentor Toolkit
over 4 years of experience

We used LinkedIn to kick start both sides of our marketplace - recruiting research participants to fill study opportunities, and to find early customers willing to give our product a shot.

- present

Respondent is a two sided marketplace that connects researchers with research participants. Our customers include companies like IBM, Microsoft, Google, Airbnb and many more.

Insights Professional
New York, United States of America

• Founding employee of transatlantic consultancy • Helped grow the two person business in the U.S to $600k+ revenue in year one

Digital Agencies
Qualitative Researcher
Hall & Partners
New York, United States of America

Spear headed the strategic growth of Hall & Partners qualitative digital research offering in the U.S • Collaborated with developers in the UK to help build H&P's proprietary digital platform into a best in class research tool • Worked as a qualitative researcher across the travel, FMCG, technology and financial industries

Digital Agencies
Bachelor of Business (Honors)
Royal Melbourne Institute of Technology

Majored in Marketing

Bachelor of Commerce
University of Melbourne

Majored in Marketing & Finance

Reviews (34)
Fabian Valado
1 session
20 Aug 2020

Harri was fantastic! Friendly and open, It was great hearing from a seasoned growth expert and breaking into a real impactful conversation.

1 session
13 Aug 2020

I reached out to Harri after reading his blog: https://www.growthmentor.com/advice/startups/how-to-start-online-business/ We're at that scrappy early growth stage of the business looking to go from 4-10-40 customers in the next 6 months and the pointers Harri was able to share around focusing in on customer persona's and their JTBD were invaluable.

Ani Mercedes
1 session
12 Aug 2020

Harri's guidance was extremely helpful! He honed in on a key problem I was having and shared insight on how to reframe it to be able to scale and be laser-focused on my customer. I highly recommend a session with him. Thank you!

Luis Camacho
1 session
7 Aug 2020

Harri was absolutely amazing! Was very friendly from the beginning and even before the call started, he had already taken a look at what I needed help with and put together a document for me to take a look at and go more in-depth during the call. Fantastic mentor!

Austin Ollar
1 session
6 Aug 2020

Harri provided some excellent real world advice and feedback. Thanks a bunch for your help!

Steve Birnhak
1 session
30 Jul 2020

Harri was easy to talk to and it was great hearing his experiences, which helped me consider our approach to bootstrapping vs VC.

Jay Velasco
1 session
29 Jul 2020

Harri was more than helpful in providing feedback for our pitch and giving us extremely valuable advice as we grow our business at this very early stage. Looking forward to scheduling further session with Harri.

Sibi Murugesan
1 session
29 Jul 2020

Harri was great! His deep knowledge in the space really shone through with his crystal clear suggestions for next steps. Looking forward to connecting with him again in the future!

Spyros Tsoukalas
1 session
24 Jul 2020

Harri was very helpful and willing to help us decide how to move forward. I highly recommend him, his experience is great.

Jonathan Goldford
1 session
22 Jul 2020

Harri was great. He drew on his experience as a startup founder to provide actionable steps we can take to increase leads and grow our business. He was also honest about his likes and dislikes of our model and our marketing, giving us insights that can be tough to get from others. Overall, we really enjoyed talking to Harri and would definitely recommend him to others.

Chris Black
1 session
10 Jul 2020

Consulted with Harri on a new product I'm taking to market. Felt he was really genuinely taking time to understand where my business is at & gave me invaluable insights into how I approach Left the initial call thinking about the project in a different, more savvy & cost-effective way. Personable/friendly, very knowledgeable insights which I will implement & great value. & hope to keep in touch as the project develops

Ashok Kola
1 session
9 Jul 2020

Harri is very Kind and answered all the questions regarding various aspects on scaling a startup. Learnt a lot of different approaches on how we can scale a bootstrapped company.

Robert DuBois
1 session
24 Jun 2020

Harri helped set the call up for success by asking for questions and sharing resources ahead of time. On the call he drove the conversation to a key area of focus that will help me take the the right next step to maximize my time value vs. effort – a very, very helpful call. I feel like I've taken a quantum leap forward. Thanks Harri!

FMF Creative
1 session
23 May 2020

Harri's a great dude with a lot of experience, and understanding of our background. He listened carefully to what we were trying to do, and came up with some great new ways at looking at things, and was encouraging with his feedback. Definitely feel inspired to implement some of his suggestions and would easily jump on another session in the future. Cheers mate!

Susana Gomez
1 session
22 May 2020

It was a pleasure to talk to Harri about how to calculate market sizes and to get to know some of his own background concerning bootstrapping. Left the call with a clear understanding of how to proceed with my current task and will definatly book a call again when it comes to funding and pitch deck review. Thanks a lot!

Krish M
1 session
13 May 2020

It was great o speak to Harri! Harri was open and honest, giving us some useful tips to consider. We enjoyed picking Harri's brain!

Mark Colgan 💰📈👍
1 session
19 Apr 2020

Harri's experience with customer research really came through in this session. He also asked some thought-provoking questions about our new service which was very helpful. Harry followed up with a detailed email and outline of a plan for us to follow, going above and beyond. Thanks Harri!

Bianca Schnitzler
1 session
8 Apr 2020

Harri is a great mentor. His experience with bootstrapping his business makes him a valuable mentor with a different perspective. Thanks for the advice :)

Kristen Giovanniello
1 session
2 Apr 2020

Harri is extremely knowledgable. I highly recommend scheduling a session with him!

Mark Cann
1 session
1 Apr 2020

Harri really knows his onions when it comes to market research and testing the market. I would highly recommend chatting to him about the practicalities of early-stage product/market fit testing beyond your own opinions and assumptions!

Foti Panagiotakopoulos
1 session
28 Mar 2020

Great call with Harri. We had a great conversation about the product backlog of growthmentor and prioritization thereof. He's a great listener and can quickly piece together what you're trying to do at a high level.

Stephanie Houng
1 session
25 Mar 2020

Really enjoyed my chat with Harri. He gave me some really good advice about go-to market and honing my value proposition. He also introduced me to some very valuable frameworks that I can apply.

Vito Margiotta
3 sessions
17 Mar 2020

Insightful as always!

Dan Siepen
1 session
5 Mar 2020

Harri was awesome to chat to! Got lots of value out of our chat and very nice guy too! Highly recommend and will be having more calls with him into the future :)

Michael Hoeft
2 sessions
21 Feb 2020

Harri is a scrappy entrepreneur who started from literally nothing and no money and built a terrific startup with his team. And I feel like I got a front-row seat with regards to some of the high-level analysis and the pivots and the thought processes that went into the company's origin and its strong growth. He is specific with his insights and he is very encouraging to the entrepreneur and our focus on preserving capital and saving time while executing on our mission to bring valued services to paying customers. He truly knows his stuff and he loves building businesses and helping others who are doing the same.

Michael Hoeft
2 sessions
15 Feb 2020


Vito Margiotta
3 sessions
6 Feb 2020

Henri is an awesome person and mentor - super super spot on and available. Unfortunately the business I was running did not go as planned, so we ended up stopping the conversation, but I so much appreciated his support!

Jodie mlikota
1 session
1 Feb 2020

Got a lot of value out of my session with Hari - really insightful! Great to hear from a fellow founder further along on the journey with tips on managing growth & maximising opportunities.

Matt Dodgson
1 session
25 Jan 2020

Harri gave me some sound advice. He quickly understood our business and was able to ask some great questions to get to the heart of the issue, which helped uncover some great solutions.

Greg Weinstein
1 session
25 Jan 2020

If you want straight, practical, and spot-on guidance from someone who's been there and done that.. then Harri is definitely your guy. Talking with him is like getting 10 years of startup wisdom in a concentrated 30-minute dose. Come ready to take notes because you're going to want to capture everything he tells you.

Andrew Amedu
2 sessions
12 Jan 2020

Harri was very kind. During our call, he gave me several ideas on how to solve the challenges I had with my business and went further to send me a lengthy email with detailed advice. Looking forward to speaking with him again!

1 session
8 Jan 2020

Harri did a great job of questioning my assumptions so I can get maximum value from the software products I create.

Masood Raza
1 session
5 Nov 2019

My session with Harri was excellent. He took the time to learn about my business model and market before giving any advice. He offered recommendations based on his experience but also an objective analysis of where he thinks we should adjust our thinking. The biggest takeaway, was that he helped me reign in our roadmap and realign our milestones based on the metrics that should matter, like getting active users and our first dollar of revenue in the door. Our call was only 30 min, but was packed with so many insights. If I were to read or scour Youtube for the same advice it may have taken hours. 5/5 experience overall. Highly recommended.

Kristjan Kristjansson
1 session
10 Oct 2019

Harri is friendly, professional, knowledgable with real insights into how he grew his own business, that might also apply to yours. Highly recommend him, and look forward to continue our dialogues moving forward.