Advisory for seed to Series B founders
I help founders turn ambition into a company that actually works.
Setting clear goals, building great teams, getting sales and marketing working properly, running product programmes with discipline, and knowing when to sell or shut it down.
An independent advisory practice working with a small number of founders at any one time. Founded by Harri Thomas — co-founder of Respondent (acquired 2020), ex-Facebook UX research.
145 sessions with founders · 4.99 average across 104 reviews
I — The Practice
About
Eudaimonia Ventures is an independent advisory practice for seed to Series B founders, working across B2B and B2C. The work is the unglamorous machinery a company needs once it has outgrown what one person can hold in their head: setting goals that align the team and hold, building and managing the people who own them, getting sales and marketing working properly, and running product programmes with enough discipline that dates mean something.
The practice takes on a small number of engagements at any one time. Every engagement is run personally by the founder, Harri Thomas, drawing on a decade of operating experience inside research-led SaaS businesses.
II — The Founder
About the founder
I co-founded Respondent, a B2B research marketplace, in 2016. We started by handing flyers out on the street to recruit our first research participants — and from there grew the business to 30+ employees, eight figures of annual GMV, and customers including IBM, Microsoft, Uber, and Airbnb. We raised $6M in venture capital along the way, followed by me selling my stake in the business to private equity in 2020.
After that, I was interim Head of Research & Strategy at Picnic, where I helped the team close a seed round and set up their research practice. I then joined Meta as a Senior UX Researcher leading integrations for Workplace (covered in The Verge, CNBC, GeekWire, and PCMag).
I then started Elephants, a social goals app. I raised a pre-seed round at pre-product stage and hit 100k installs in six months after launch, but it didn't catch on the way we'd hoped, and we shut it down after 18 months.
I now run Eudaimonia Ventures full-time, working with a handful of founders I genuinely think I can help. Most recently: a B2B SaaS I joined at seed to lead growth — running the growth team and building the metrics that helped propel them to a successful Series A with some of North America's best known investors.
Co-founder, Respondent (acquired 2020) · Ex-Facebook UX Research · Founder, Elephants · Published in The Guardian, UX Collective, Hackernoon
III — Practice Areas
Practice areas
I. OKRs and people management.
A company stops being steerable the moment nobody can say what each person is actually for. Goals drift into wish-lists, and managing becomes a series of unconnected conversations. The fix is not a better template. It is that every person carries one number, those numbers add up to the one above them, and the quarter is built from the thing genuinely blocking everything else. Eudaimonia builds that structure with the founder and the leadership team, then stays close enough through the quarter to catch the drift in week three rather than week twelve.
II. Getting sales and marketing working properly.
At seed this is usually an effort problem. There is no motion yet, the founder is the sales team, and not enough conversations have happened for anyone to know anything. More activity is the right answer and there is no clever substitute for it. Later the answer flips. Once there is real volume going out and a team behind it, effort stops being the constraint and the problem becomes diagnosis and conversion: where the funnel actually breaks, which signals predict a real conversation, and whether the numbers everyone is reading mean the same thing. Applying the seed answer at that point burns the list, the domain and the team along with it. Getting that transition wrong, in either direction, is the expensive mistake.
III. Running product programmes with discipline.
Roadmaps rarely fail loudly. A date moves and nobody announces it, then it moves again, and a quarter later the plan has no relationship to what is happening. Discipline here is not bureaucracy. Eudaimonia writes the exit criteria before anyone is invested in shipping, measures against what those criteria actually say, and re-baselines in public when reality changes. A programme that announces its slips is in far better health than one that quietly absorbs them.
IV. Knowing when to sell, and when to shut down.
These are the two decisions founders make with the worst counsel available to them, because almost everyone close by has a stake in the answer. Investors want another swing. The team wants certainty. Friends want to be supportive. What is missing is someone who has done both, who is not on the cap table, and who has no preference about which way it goes. I have sold a company and I have closed one, and I will tell you what I actually think.
IV — Engagements
Engagements
I. Working session.
A focused ninety-minute conversation on a specific problem the client brings. The client leaves with a written summary, a recommended next step, and a follow-up note one week later. Best for a single decision or a stuck point.
II. Sprint.
A four-week engagement with a defined outcome. Typical examples include standing up a customer research practice, designing a fundraising narrative, or building a bootstrapped go-to-market plan. Weekly working sessions, async support throughout. Best for shipping one important thing well.
III. Advisor.
A monthly retainer, approximately four hours of work per month, async-first. The practice takes on two advisor engagements at a time. Best for founders who want a senior outside operator alongside them over the long haul. By application.
Eudaimonia Ventures is a registered Australian business (ABN 684 601 983). All engagements are contracted formally and scoped to the work, with a defined outcome and a fixed fee agreed before it starts. Pricing is shared after an initial conversation. The practice takes on a small number of pro-bono engagements each year for mission-aligned founders.
V — Testimonials
Testimonials
4.99 average rating across 100+ founder conversations
Harri is one of those advisors I keep going back to. He understands what it's like to bootstrap a business and what it's like to run a VC-backed business. He also has a keen eye for business models and how well they can meet customer needs.
Harri prepared thoroughly. He was very clear on where his experience and expertise lay and what he was qualified to comment on, and provided critical insights on a topic fairly new to me that will shape our strategic decision-making.
Our conversation centred around equity deals with strategic partners — a topic I had no experience with. Harri broke down the complexities, shared industry best practices, and highlighted red flags I needed to know. What stood out was his ability to balance praise with constructive feedback — recognising where I was performing well, and pushing me on what I needed to ponder more deeply.
Harri is open, friendly, and hugely knowledgeable — but even better than that, he cut through all the noise and got to the crux of our challenge. His suggestions were like a light going on; I literally started working on them the second the session finished.
From the get-go, Harri was warm and easy to speak to. We shared our founder journeys and the setbacks that shaped us. As a consumer-app founder himself, he gave me real feedback on framing my investor pitch and competitor landscape. If you're looking for someone knowledgeable and approachable, Harri is the person.
Harri took the time to ask questions before the meeting so he could understand our situation properly. He's genuinely interested in solving problems, and draws from a wealth of knowledge and experience to address them with both solutions and probing questions.
VI — Inquiries
Inquiries
Eudaimonia Ventures works with a limited number of founders at any one time. To inquire about an engagement, please share a brief note about the company, its stage, and the problem you're trying to solve. All inquiries receive a response within 48 hours.
Or reach the founder directly: LinkedIn · hello@eudaimoniaventures.com