What Defiant does

Defiant is a venture capital firm founded in December 2024 and headquartered in London with a secondary office in Lisbon, focused on investing in European B2B software and fintech companies at the Late Seed and Series A stages with check sizes of $2–10 million. The firm self-describes as "Europe's first VC firm engineered like a technology company" and has built a proprietary product suite of four internally developed tools: Blueprint (a capital-readiness assessment tool for early-stage B2B SaaS founders), Benchmarks (a private database of 200+ early-stage B2B SaaS companies with Go-To-Market, Operations, and Capital metrics), European Open Source Monitor (a GitHub activity tracker for European B2B and fintech startups covering stars, forks, and repository growth), and Fragments (data and insights products for the European VC ecosystem). All four products are offered free to founders and ecosystem participants, functioning as both brand assets and top-of-funnel deal-sourcing mechanisms.

The fund is structured as a Luxembourg special limited partnership (société en commandite spéciale) with fundcraft Management S.à r.l. as the proposed Alternative Investment Fund Manager (AIFM), authorized and regulated by the Commission de Surveillance du Secteur Financier (CSSF) in Luxembourg. Revenue mechanics follow the traditional VC model of management fees and carried interest on portfolio returns, though fund size and fee terms are not publicly disclosed. Documented portfolio activity to date consists of two disclosed investments: participation in Rivia's $15 million Series A (March 2026, clinical trial AI infrastructure) led by Earlybird, and participation in Blitzy's $200 million funding round at a $1.4 billion valuation (May 2026, autonomous AI-agent software development) led by Northzone. The team is led by Managing Partner Joseph Pizzolato (formerly of Rothschild, Vitruvian Partners, and Felix Capital, with prior involvement in 20+ investments including Wise, Marqeta, Mirakl, and Travelperk), Partner Cam Rail (former quant turned SaaS founder/operator), General Partner Jai Juneja, and Venture Partner Gary Jaitowal.

Name

Defiant

Legal name

Defiant

Website

https://defiant.vc

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1–10 employees

Short description

Defiant is a London-based venture capital firm investing in European B2B software and fintech companies at Late Seed and Series A, distinguished by a proprietary free product suite (Blueprint, Benchmarks, Open Source Monitor, Fragments) designed to support founders beyond capital.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Venture Capital Management: Traditional VC fund structure with management fees and carried interest from portfolio company returns. The fund is structured as a Luxembourg special limited partnership (société en commandite spéciale) with fundcraft Management S.à r.l. as the proposed AIFM.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Defiant is a venture capital firm that invests $2-10m in B2B software and fintech companies at Late Seed and Series A stages, with a primary focus on Europe and global reach. The firm operates a product-centric platform offering free proprietary tools—Blueprint, Benchmarks, Open Source Monitor, and Fragments—that provide founders with capital-raising assessments, SaaS benchmarking data, GitHub activity tracking, and market intelligence.

Product overview

Defiant is Europe's first VC firm engineered like a technology company. It operates as a platform of internally-built products designed to deliver value to portfolio companies and the broader B2B ecosystem. The product suite consists of Blueprint (a capital-raising assessment tool for early-stage founders), Benchmarks (a private database of early-stage SaaS metrics), European Open Source Monitor (GitHub activity tracking for European B2B/fintech startups), and Fragments (market intelligence fragments). These products are provided free to founders and reflect Defiant's data-driven, product-centric approach to venture investing.

Differentiator

Problem solved

Functional benefit

Brands

• Blueprint: Empowers early-stage B2B SaaS founders to understand what it takes to raise capital in today's market. Analyzes metrics and provides objective assessment of how founders compare to peers through the lens of a VC.
• Benchmarks
• Open Source
• Fragments

Products and services

• Blueprint A free tool that empowers early-stage B2B SaaS founders to understand what it takes to raise capital. Analyzes founder metrics and provides an objective assessment of how they compare to peers through the lens of a VC. Trusted by 50+ B2B SaaS founders.
• Benchmarks
• European Open Source Monitor
• Fragments

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Index Ventures: European-anchored multi-stage venture firm with a strong B2B SaaS and fintech franchise, investing at Seed through Growth. Directly comparable to Defiant on geography, sector and stage focus.
• Atomico: London-based venture firm founded by a former Skype operator, focused on European tech from Seed to Growth, with significant B2B software exposure. Directly comparable on geography, stage and category.
• Speedinvest: Vienna-based early-stage European VC with dedicated B2B SaaS and fintech funds investing at Seed and Series A. Co-invested with Defiant in Rivia, indicating direct overlap in deal sourcing and stage.
• Notion Capital: London-based VC specialised in B2B SaaS across Europe, investing from Seed to Series B. Closely comparable on geography, sector specialisation and stage focus.
• Balderton Capital: London-headquartered European early-stage VC investing from Seed to Series A in software and fintech. Highly comparable on geography, sector and stage.
• Earlybird: Berlin-based European venture firm investing from Seed through Growth across software and fintech. Led Defiant's co-invested Rivia round, evidencing direct overlap in deal flow.
• Northzone: Pan-European early-to-growth stage VC with software and fintech focus. Co-invested with Defiant in Blitzy and operates in directly overlapping geographies and stages.
• HV Capital: Munich-based European venture firm investing across Seed, Series A and Growth in B2B software and fintech. Comparable on geography, stage and category focus.

Broad incumbents

• Felix Capital: London-based venture firm focused on digital lifestyle and B2B SaaS at Seed and Series A. Relevant because Defiant's Managing Partner Joseph Pizzolato previously invested at Felix and follows a comparable thesis.
• Accel: Global venture firm with a long-standing European practice investing from Seed onwards in software and fintech. Comparable as a broader incumbent that competes for the same Series A rounds.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/defiantvc

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments4 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Defiant