Mattias Ljungman

Who they are

Mattias Ljungman is Founder and Managing Partner at Moonfire Ventures — previously co-founded Atomico with Niklas Zennström in 2006 and wrote the Medium farewell post that announced his departure to build a data-driven seed firm from scratch.

Person

Mattias did his Honours BA at McGill (1992–1996) then a Master's at Stockholm School of Economics (1997–1999) — a transatlantic education that tracks with a career spent bridging European and global tech capital. He spent over a decade as Co-Founding Partner at Atomico, the European VC he built with Niklas Zennström (founder of Skype) starting in 2006, growing it into one of the continent's most recognised growth-stage funds. Along the way he served on advisory boards and had exposure to Silicon Valley Bank UK, Seedcamp, and firstminute capital. In 2019 he left Atomico — his Medium farewell post marked the clean break — and founded Moonfire Ventures, a London-based seed fund built around a technology-powered approach to deal sourcing, reviewing 50,000 companies weekly using AI. The through-line is institution-building at the early end of the European venture stack: first helping construct Atomico from zero, then designing Moonfire as a software-first alternative to the traditional seed model. He speaks regularly at DLD, SXSW London 2026, Tech Spirit Barcelona, and Station F, and writes on the Moonfire Stories blog covering fundraising timing, fintech, the creator economy, and portfolio updates. Possibly — his GameAnalytics byline on AI-native account management in mobile gaming suggests he's sharpening a view on AI applied to specific verticals, not just the fund itself.

Company

Moonfire's most recent publicly visible deal was in May 2026, when it backed MokN's $15 million round led by Google Ventures — continuing a run of active deployment in 2025–2026. In November 2025 the firm participated in a €43 million Series A for Flexion Robotics, and in January 2026 a portfolio company, Faculty, exited via acquisition. The fund itself closed Fund II at $115 million in September 2025, giving Ljungman fresh capital to deploy at pre-seed and seed. Moonfire also added a Staff Software Engineer (Tom Bradley) in January 2026, a hire that underscores the firm's self-described identity as a technology business that also does VC, not the reverse.

Market

Moonfire competes in the crowded European pre-seed and seed tier alongside firms like Seedcamp and firstminute capital, differentiating on its claim to review 50,000 companies weekly through an AI-assisted sourcing stack. The broader VC industry is under pressure to demonstrate that AI integration in deal sourcing and evaluation is a real edge rather than a marketing posture — Moonfire has leaned into that positioning explicitly. A closed $115 million Fund II gives it a credible scale argument at seed while staying small enough to lead early rounds where most growth-stage funds won't go.

Network

Ljungman's most durable professional relationship is with Niklas Zennström, with whom he co-founded Atomico in 2006. He has also appeared alongside Giovanni Luperti of Humaans in a Seedcamp podcast on the future of work, signalling an active engagement with his portfolio community.

Niklas Zennström· Co-founder, Atomico
Giovanni Luperti· Co-founder, Humaans

How they likely show up

Long tenure at Atomico (2006 to 2019, co-founding partner) → thinks in decade-long arcs; not easily rattled by short-term market noise.
Founded Moonfire from scratch after leaving Atomico rather than joining an existing firm → high agency, prefers building structures over inheriting them.
Moonfire's core claim is reviewing 50,000 companies weekly via AI → operationally obsessed with scale and systematic process, not purely gut-feel investing.
Active public speaker at DLD, SXSW London, Station F, Tech Spirit Barcelona, and Seedcamp → comfortable on stage, likely responds well to substantive back-and-forth rather than pitches.
Writes publicly on Medium and the Moonfire Stories blog on fundraising timing, fintech, and the creator economy → forms and shares views; expect him to have a defined position coming into any conversation.
Hired a Staff Software Engineer as a recent internal team move → treats the fund itself as a product to be engineered, not just a capital vehicle.

Conversation tips

→ Reference his Medium farewell post to Atomico — it signals you've tracked the deliberate arc from growth-stage fund-builder to seed-stage founder, which is a choice he made consciously and likely cares about.
→ Ask about the AI sourcing stack specifically — '50,000 companies weekly' is a claim he has made publicly; he'll want to explain the mechanics and it's a genuine differentiator he's proud of.
→ Don't treat him as a conventional VC — he built two firms from scratch, so frame questions around the institution-building dimension, not just portfolio returns.
→ He has been active at SXSW London 2026 on founder ecosystems — if you're meeting around that period, reference the specific talk topic rather than a generic 'I saw you speak.'

Toolbox

Openers

Open on the Fund II close at $115 million in September 2025 — it's the clearest signal that the Moonfire thesis has cleared a validation hurdle, and he'll have a view on what that capital unlocks at pre-seed in the current market.
Reference the MokN deal in May 2026, where Moonfire backed a phishing-defense company alongside Google Ventures — it's a specific, recent portfolio move that shows where he's deploying at the moment.
Mention the Medium farewell post from when he left Atomico — it was a public articulation of exactly why he wanted to build something different; people remember what they wrote at a hinge moment.

Discovery questions

You've described Moonfire as reviewing 50,000 companies weekly through AI — at that volume, what's the rate-limiting step that still requires human judgment you can't automate?
Faculty exiting via acquisition in January 2026 and Flexion Robotics raising a €43 million Series A in November 2025 are very different outcomes at very different speeds — how does the fund think about portfolio construction when the exit timeline variance is that wide?
At Atomico you were building a growth-stage institution; at Moonfire you're at pre-seed with a tech-first sourcing model — what's the thing that surprised you most about how differently founders engage with a seed firm versus a later-stage one?

Avoid

Don't pitch Moonfire on a company using generic 'European deep tech' framing — the firm's differentiator is systematic, data-driven sourcing, so a well-structured deck matters less than evidence you understand why that approach catches things traditional scouts miss.

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