Organization · Venture Capital
Defiant
Defiant is a London and Lisbon-based venture capital firm that invests in early-stage B2B SaaS and fintech companies. The firm focuses on businesses with live products and revenue, emphasizing technical complexity and barriers to entry.
Overview
What Defiant does
What Defiant is
Defiant is a London and Lisbon-based venture capital firm that invests in early-stage B2B SaaS and fintech companies. The firm focuses on businesses with live products and revenue, emphasizing technical complexity and barriers to entry.
How it participates in the startup ecosystem
The current public profile supports funder capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Venture Capital
- Founded
- Founded in 2025
- Approximate age
- About 1 year
- Structured capabilities
- Funder
- Last reviewed
- April 26, 2026
Official channels
Find Defiant elsewhere
Open the official website or a supported primary organization account.
Capability profile
Defiant as a funder
Investment thesis
Defiant's investment thesis emphasizes a product-centric, data-driven approach to venture capital, focusing on B2B software and fintech companies with live products and early signs of growth.
Focus narrative
Defiant invests in late seed and Series A B2B software and fintech businesses, primarily within Europe but also globally. The organization typically leads, co-leads, or follows investments ranging from $2 million to $10 million, focusing on companies with a live product in the market and generating revenue.
Value beyond capital
Defiant adds value to its portfolio companies through a unique product and data stack, offering tools like Blueprint and Benchmarks to help founders understand investor perceptions and compare operational metrics against peers.
Terms and economics
- Typical check
- $2,000,000–$10,000,000
- Sweet spot
- $5,000,000
Focus and fit
- Stages
- Seed · Seed+ · Series A
- Regions
- Europe · Global
Availability
- Currently deploying
- Yes
Portfolio and track record
Portfolio context
Defiant's portfolio includes notable investments in B2B software and fintech companies such as Rivia, a clinical-trial data engine and AI platform, as well as prior support for companies like Wise, Marqeta, and Mirakl.
Common questions
What to know about Defiant
Upseed classifies Defiant under the Venture Capital organization type. Its current public profile includes funder capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
April 26, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.