Florian Heinemann

Who they are

Florian Heinemann is Founding and General Partner at Project A Ventures — co-founded JustBooks in 1999 (later acquired by Amazon via AbeBooks) and antibodies-online.com, and holds a Ph.D. in Innovation Management from RWTH Aachen.

Person

Florian founded JustBooks in 1999, one of Germany's earliest online book marketplaces, which sold to AbeBooks in 2001 — itself later acquired by Amazon. From there he moved through early German internet companies including Jamba! and iLove, then into Rocket Internet as a Management Board Member, where he ran ventures as Managing Director before departing to build something more structurally his own. He co-founded antibodies-online.com, an online marketplace for life science reagents that was later acquired by Broadoak, showing an appetite for unlikely verticals. In January 2012 he co-founded Project A Ventures in Berlin — at the time a novel bet on an 'operational VC' model that embeds 100+ in-house specialists alongside capital — and has grown it to €1.2 billion in AUM. His academic formation is unusually deep for a practitioner: Master's at WHU – Otto Beisheim School of Management, visiting scholar at Wharton, time at MIT, and a Ph.D. in Innovation Management and Entrepreneurship from RWTH Aachen. He publishes at florian-heinemann.de on digital marketing, AI transformation, brand competitiveness, payment, and logistics, and speaks regularly at events including IdeaLab! 2026, PAKCon, and StartupCon — consistently on AI readiness and what it means for retailers and brands.

Company

Project A's most recent major move was closing Fund V in June 2025 — €325 million raised in just four months from returning and new limited partners across Europe and the US, lifting total AUM to €1.2 billion. The fund explicitly signals a shift toward fewer deals but larger conviction bets, with a focus on seed and Series A rounds in AI, fintech, software, and defense. Notably, Project A has expanded into battlefield robotics and AI-powered defense applications, areas historically underserved by European VC but now animated by geopolitical pressure and increased defense spending across the continent. The firm also strengthened its London presence by adding a new Partner as part of the Fund V expansion. Its operational model — embedding product, marketing, and data specialists directly with portfolio companies to help founders reach Series A from global investors like Accel, Benchmark, and Sequoia — remains its core differentiator.

Market

Project A sits in a crowded but stratifying European early-stage VC market, where fewer deals and bigger bets are becoming the norm; its competitors include global heavyweights Lightspeed, Battery, a16z, Accel, Benchmark, and Sequoia, all of which are active in early-stage funding and increasingly in defense and AI. The broader market dynamic in 2025–2026 favors AI-native companies — non-AI companies face higher bars and lower valuations at equivalent metrics — while geopolitical tensions are reshaping diligence and deal certainty, particularly around defense and infrastructure sovereignty. Project A's expansion into battlefield robotics and dual-use tech positions it to ride that shift from within Europe.

Network

Florian's closest professional circle is his Project A co-founding team: Uwe Horstmann, Malin Posern, Thies Sander, and Anton Waitz are all partners at the firm. Beyond the fund, he sits on boards at Trade Republic (fintech), Körber (German industrials), Fiege (logistics), and Holtzbrinck (media/publishing), giving him a cross-sector network spanning finance, manufacturing, and distribution. He appears regularly in conversation with Alexander Graf on retail and AI dynamics, and with Joel Kaczmarek on the Digital Kompakt 'Business Building' podcast.

Uwe Horstmann· Founding Partner, Project A Ventures
Malin Posern· Founding Partner, Project A Ventures
Thies Sander· Partner, Project A Ventures
Anton Waitz· Partner, Project A Ventures
Alexander Graf· Podcast co-participant, retail/AI commentator
Joel Kaczmarek· Host, Digital Kompakt 'Business Building' podcast

How they likely show up

Long tenure at Project A since January 2012 — built the firm from founding through €1.2B AUM over more than a decade, suggesting he thinks in structural, multi-year arcs rather than quarterly cycles.
Ph.D. in Innovation Management and Entrepreneurship alongside a Wharton visiting scholarship → he invests in theoretical frameworks and likely expects rigor in how people reason about markets, not just gut feel.
Active public writer and frequent conference speaker (IdeaLab! 2026, PAKCon, StartupCon) on AI readiness and marketing transformation → comfortable being a visible thought leader, probably responds well to engagement with his published ideas.
Founded companies in radically different verticals — online books (1999), life science reagents (2006), venture capital (2012) → pattern suggests he bets on market structure and timing, not sector familiarity.
Built Project A around an 'operational VC' model with 100+ in-house experts embedded with founders → values operational specificity over pure capital deployment; likely impatient with abstract advice.
Sits on boards spanning fintech (Trade Republic), industrials (Körber), logistics (Fiege), and media (Holtzbrinck) → breadth suggests he enjoys cross-sector pattern recognition and brings it actively into portfolio conversations.

Conversation tips

→ Reference a specific post from florian-heinemann.de — he publishes there on AI transformation and brand competitiveness, and naming a concrete piece signals you've done more than a LinkedIn skim.
→ Come with a point of view on AI readiness in your sector — his public talks at PAKCon and StartupCon center on this; he'll engage harder if you have a thesis to push back on, not just questions to ask.
→ JustBooks is a good anchor if the conversation touches on European internet history — founding an online marketplace in 1999 that reached Amazon is a formative chapter he's likely proud of.
→ Don't pitch generically on 'operational value-add' — his entire firm is built on that model, so he'll immediately stress-test what you actually mean by it.
→ If defense tech or battlefield robotics comes up, engage seriously — Fund V explicitly expands into that space, so it's a live conviction, not a casual interest.

Toolbox

Openers

Open on Fund V's defense tech expansion — Project A is now explicitly backing battlefield robotics and AI-powered defense applications, a sharp move for a firm that started in consumer internet. Ask what changed his calculus on defense as a venture category.
Reference his florian-heinemann.de writing on AI transformation and brand competitiveness — he maintains an active blog on exactly these themes, and naming a specific post signals preparation beyond a standard LinkedIn check.
Anchor on JustBooks: founding an online book marketplace in Germany in 1999 and selling it into what became an Amazon acquisition is a specific founding story that predates most European VC by a decade — it's a natural opener into how he thinks about timing and market structure.

Discovery questions

Fund V explicitly shifts toward fewer deals and bigger conviction bets — how does that change the operational support model you've built with 100+ in-house specialists, given you're covering more ground per company?
You've sat on boards across fintech (Trade Republic), logistics (Fiege), and industrials (Körber) while running an early-stage fund — what do you actually learn from the later-stage corporate boards that changes how you underwrite a seed deal?
The move into battlefield robotics and defense is a meaningful expansion for a firm that came out of consumer and software internet — what's the operational support model for a defense startup versus a B2C or fintech company?

Avoid

Don't treat 'operational VC' as a differentiator to explain to him — he invented the model for Project A and has run it for over a decade; any framing that implies he needs it defined will land badly.

Make it yours