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Moonfire

moonfire.com

“Companies combining access, efficiency, quality, and data-driven insights represent the next generation of market leaders. We invest in European pre-seed and seed companies revolutionizing work, security, finance, gaming, and health through data-powered innovation.”

$250K – $3M
Check Size
Leads
Lead Tendency
~2 Weeks
Timeline
01Investment Thesis

Companies combining access, efficiency, quality, and data-driven insights represent the next generation of market leaders. We invest in European pre-seed and seed companies revolutionizing work, security, finance, gaming, and health through data-powered innovation.

Exclusion Criteria

No hardware-heavy companies, traditional marketplaces, or capital-intensive models. Avoid crypto speculation and gambling applications.

02Investment Team
ML
Mattias Ljungman
03F4 Research Brief

Moonfire Ventures Research

Investment Thesis

Moonfire is a London-based early-stage venture capital firm that operates as a unique blend of builders and investors. Founded in 2020 by Mattias Ljungman (former Atomico co-founder), the firm invests in pre-seed and seed-stage companies across Europe, with a particular focus on AI-driven innovation. The fund believes in the "Golden Triangle" framework: companies that combine Access, Efficiency, Quality, and Data to drive transformative market impact. Moonfire distinguishes itself through proprietary machine learning technology and deep technical expertise, positioning itself as a technology-enabled VC firm rather than a traditional investment vehicle.

Investment Thesis Details

Moonfire's core conviction centers on the belief that companies solving problems at the intersection of access, efficiency, quality, and data-driven insights represent the next generation of market leaders. The firm actively builds its own technology stack including proprietary ML models for sourcing and evaluation. This enables Moonfire to operate at significantly higher fidelity than traditional VCs, identifying exceptional founders and companies earlier in their lifecycle.

Sector Focus

Moonfire invests across five primary thematic areas:

  1. Security, Infrastructure & Tooling - Building secure, scalable solutions for AI-driven digital infrastructure
  2. Work & Knowledge - Redefining how people work, learn, and collaborate in automated and connected environments
  3. Capital & Finance - Innovating financial systems for transparency, inclusion, and accessibility
  4. Gaming, Community & Leisure - Creating immersive experiences that connect people and build communities
  5. Health & Wellbeing - Transforming lives through innovative health solutions promoting well-being

The fund explicitly avoids hardware-heavy companies and traditional marketplaces, preferring capital-efficient software solutions that leverage data for competitive advantage.

Stage Focus

Moonfire is definitively an early-stage investor focused on pre-seed and seed stage companies. The fund's narrative emphasizes identifying founders and companies at their earliest stages, often before significant traction. Their approach involves deep technical diligence leveraging proprietary ML capabilities to assess company potential and founder quality.

Check Size

Based on recent investment activity and fund information:

  • Pre-seed: €250K - €500K
  • Seed: €1M - €3M
  • Typical check size: €1.5M - €2.5M for seed rounds
  • Reserve capacity exists for follow-on investments and Series A participation

Lead Tendency

Moonfire leads or co-leads most early-stage rounds in which it participates. The fund positions itself as a first-check investor willing to take conviction-based positions. Portfolio data shows lead positions in the majority of seed-stage investments, with co-lead participation on larger rounds.

Recent Activity

Moonfire has been actively deploying capital from its most recent fund close (raised $115M in September 2025):

  • March 2025: Co-led €2.6M seed in All Gravy (financial wellness for gig workers)
  • Invested in 4 new companies in the past 12 months (as of November 2025)
  • Current portfolio includes 70+ active portfolio companies across five thematic areas
  • Fund status: Actively deploying from Fund II

Portfolio Highlights

Recent/Active Investments (2024-2025):

  • Filigran - Extended threat management suite (cybersecurity)
  • Flagright - AI-Native transaction monitoring and AML compliance
  • FlexionAI - Intelligent robots through simulation and reinforcement learning
  • Kernel - Custom AI for revenue operations
  • Liveflow - Redefining financial reporting creation
  • Lightdash - Open source BI platform with dbt
  • All Gravy - Financial wellness platform for gig workers
  • Ambral - AI account management platform for upsell/churn detection
  • Orchestra - No-code data orchestration
  • Pythagora AI - OSS dev tool building entire apps from conversation

Notable Prior Exits:

  • Klarna (acquired/IPO) - Buy now, pay later fintech
  • Truecaller (IPO) - Caller identification and messaging (425M+ users)
  • Supercell (IPO candidate) - Mobile gaming giant (Clash of Clans, Brawl Stars)
  • Peakon (acquired by Workday) - Employee feedback platform
  • StarkWare Industries (major scaling) - Zero-knowledge proof blockchain infrastructure
  • Accurx - Healthcare professional patient interaction platform
  • Viagogo (acquired) - Event ticketing marketplace

Team

Founders & Leadership:

  • Mattias Ljungman, Founder & Managing Partner - Former Atomico co-founder, 15+ years in European tech investing and scaling
  • Mike Arpaia, Managing Partner - Deep expertise in AI/ML infrastructure
  • Akshat Goenka, Partner - Focus on international expansion and operations
  • Jonas Vetterle, Head of AI & ML - Leading proprietary technology development

Technical Team (unusual for a VC):

  • Tom Bradley, Staff Software Engineer - Infrastructure and platform development
  • Ben Coughlan, Senior Site Reliability Engineer - System reliability and deployment
  • Joel Noyce, Software Engineer - Full-stack development
  • Alice Pillar, Head of Operations & Legal - Strategy and legal affairs
  • Nic Lowden, Head of Finance - Portfolio financial management

The team composition is notably heavy on engineers relative to traditional VCs, reflecting Moonfire's positioning as a technology-enabled fund.

Decision Process

Moonfire operates through a partnership model with:

  • Mattias Ljungman as founder and key decision-maker
  • Mike Arpaia and Akshat Goenka as co-decision makers
  • Proprietary ML system providing data-driven sourcing and evaluation
  • Rapid decision-making enabled by technical infrastructure ("we move like they do; fast, scrappy, first-principles-first")

Geographic Focus

Primarily Europe with concentration in:

  • UK (London headquarters)
  • Continental Europe (Germany, France, Sweden, Denmark, etc.)
  • Selective investments in Israel and other developed markets
  • Geographic thesis: Europe's outsized technical talent and efficiency vs. US capital deployment

Founder Preferences

Moonfire explicitly seeks:

  • Technical founders with deep domain expertise in their problem space
  • Builders with conviction operating on principle before market consensus
  • Data-driven thinking - founders who leverage data to make decisions
  • Founders solving real problems with clear product-market fit potential
  • Exceptional execution capability - ability to move fast and iterate
  • International ambition - founders thinking globally from day one

Fund Status & Deployment

Moonfire has recently closed Fund II with $115M in commitments (September 2025), demonstrating strong LP confidence. The firm is in active deployment phase with clear quarterly investment targets. Fund focus remains consistent: early-stage European technology companies in five core thematic areas.

Anti-Thesis

Moonfire explicitly avoids:

  • Hardware-heavy companies requiring significant capital intensity
  • Traditional marketplace models lacking data-driven differentiation
  • Non-technical founding teams in technical domains
  • Companies without clear path to global scale
  • Cryptocurrency speculation and gambling-focused applications (selective on crypto infrastructure)

Investment Philosophy

Moonfire's distinction lies in being a "technology company that does venture capital." The firm builds proprietary ML models for sourcing, evaluation, and ongoing portfolio monitoring. This technological edge allows faster decision-making, better signal detection, and superior founder and company assessment compared to traditional VCs.

Competitive Position

Moonfire competes primarily with:

  • Atomico (former employer of Mattias Ljungman)
  • European early-stage specialists (Balderton, Northzone)
  • US-based firms deploying in Europe (a16z, Accel)
  • Notable advantage: Technical team, proprietary technology, and founder-centric approach position Moonfire as differentiated in the European early-stage landscape.
04Selected Portfolio
AgTech & Agriculture
Climate
Biotech & Life Sciences
Uncommon Therapeutics
Crypto & Web3
starkware.co·Ember Sword·Sesame Labs
Developer Tools & Infrastructure
Brainboard
E-commerce & Marketplaces
Orchestra·Humaans·Oliva·Klarna·Viagogo·HomeRun
EdTech
Revyze·Grasp
Enterprise Software
Kernel·Liveflow·Lightdash·Pythagora AI·Latitude·Truecaller·Mastra·Ambral·Brightwave·Calliper·Claimer·Conductor Quantum·Decisional AI·Equify·Faculty·Flow AI·Fore AI·Haydn·AgentBay·Lingodev·Mindstone·Neuphonic·Pharosyn·Platus·SigmaOS·Skippr·Sparkles·Stackauth·Stacksync·Stanhope AI·White Circle
Fintech & Payments
Levro·Bloom·Flagright·Grasp·Respaid·Eunice·Bound
Food & Beverage
Artifact
Gaming
Squad Busters·Amihan Entertainment·Goals·Immortal Game·Quest Portal·Scriptic
Healthcare & Digital Health
Accurx·Awell·Healthtech1·Sonia·Stellarsleep·Weave
HR Tech & Future of Work
All Gravy·Peakon·All Gravy·Fleet·Pento·HiPeople
Manufacturing & Industrial
Iceguard
Real Estate & PropTech
Wayline
Robotics & Automation
Maihem·Flexion AI
Security & Cybersecurity
Filigran·Trickest·Ziggiz·MokN
Semiconductors & Hardware
Inversion Semiconductor
Travel & Hospitality
Klarent
Other
Trainloop·Landmark·Reliant·Tacter
Open the full portfolio→
05Recent Updates

Fresh signals from public announcements, essays, and portfolio activity.

See full activity (16) →
Mike Arpaia published an essay on how founders can differentiate in the AI hype cycle, a thesis piece on AI markets.
ESSAY·moonfire.com
Added recently
Portfolio company Flexion Robotics raised a $50M Series A round in November 2025.
MILESTONE·startupintros.com
Added recently
Portfolio company Filigran closed a $58M Series C round led by Accel and Insight Partners in October 2025.
MILESTONE·startupintros.com
Added recently
Moonfire led Mokn's $3M Seed round for its cyber deception platform in October 2025.
INVESTMENT·startupintros.com
Added recently
Moonfire participated in Bound's $24.5M Series A round led by AlbionVC in February 2026.
INVESTMENT·startupintros.com
Added recently
06Frequent co-investors
A
Atomico
Both backed 3 of the same companies
Peakon, Squad Busters, Klarna
BC
Balderton Capital
Both backed 3 of the same companies
Peakon, Truecaller, Grasp
BV
Batch Ventures
Both backed 3 of the same companies
Wayline, Mastra, Weave
AV
Abstract Ventures
Both backed 2 of the same companies
White Circle, Levro
AV
Album VC
Both backed 2 of the same companies
Bound, Weave
Find the investors for your round→
07Similar Firms
RV
Rainfall Ventures
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AV
AirTree Ventures
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A
AVP
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OV
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DV
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$100K – $10M · Pre-Seed · Seed
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Quick Reference
Check Size
$250K – $3M
Stages
Pre-Seed · Seed
Decision
Partnership · ~2 Weeks
Warm Intro
Not Required
Involvement
Board Seat
Sector Focus
Semiconductors & HardwareLogistics & Supply ChainManufacturing & IndustrialConsumer Apps & SocialGamingEnterprise SoftwareDeveloper Tools & InfrastructureSecurity & CybersecurityFintech & PaymentsHealthcare & Digital HealthReal Estate & PropTechEdTechClimate & SustainabilityRobotics & Automation
Models
B2B SaaSDeveloper ToolsInfrastructureAI/ML
Technology
AI/MLInfrastructureSecurityData
See all Semiconductors & Hardware investors →See all Logistics & Supply Chain investors →See all Manufacturing & Industrial investors →
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Focus Areas
Semiconductors & HardwareLogistics & Supply ChainManufacturing & IndustrialConsumer Apps & SocialGamingEnterprise SoftwareDeveloper Tools & InfrastructureSecurity & CybersecurityFintech & PaymentsHealthcare & Digital HealthReal Estate & PropTechEdTechClimate & SustainabilityRobotics & Automation

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F4 Intelligence Report · Last Researched September 21, 2026F4 Research Engine