What stage does Defiant invest at?

Defiant invests at the Seed, Series A stages.

What is Defiant's typical check size?

Defiant typically writes checks of $2M – $10M.

What sectors does Defiant focus on?

Defiant focuses on Enterprise Software, Fintech, SaaS.

Where is Defiant located?

Defiant is headquartered in London, GB.

Does Defiant lead rounds?

Yes, Defiant leads investment rounds.

Defiant

Venture capital

London · Seed–Series A · 12 people tracked

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Investment thesis

Defiant is a venture fund reimagining what a VC fund can look like through a thematically-led, data-driven and product-centric approach to investing in B2B software and fintech. It backs early-stage founders and builds proprietary software and benchmarking products to add value beyond capital. The firm draws parallels between the cloud era's 'picks and shovels' middleware companies and today's AI market, expecting a new generation of tools to emerge. It believes defensibility in the age of large language models comes from proprietary workflow data, built-in growth loops and rapid experimentation, driving disruption across the modern business tech stack.

Invests inEnterprise Software Fintech SaaS Europe Global London

Source: firm website, verified Aug 16, 2026.

Stage

Seed–Series A

Check

$2M – $10M

London, GB

Leads rounds

Leads

Instruments

Equity

Last 12 months

1 investment

Tracked investments

Team · 12 people

from the firm's website & curated

Jai Juneja· General Partner· Greater London, England, United Kingdomin

Cam Rail· Partner· San Francisco, California, United Statesin

A product builder who began his career as a quant trader and financial analyst at global investment banks before moving into product, where he founded and scaled several SaaS businesses and led one to exit.

Joseph Pizzolato· Managing Partner· Londonin

Began investing at 16 and later worked as an engineer before joining institutions such as Rothschild, Vitruvian Partners, and Felix Capital. Over 10+ years he has supported more than 20 startups from seed to IPO across Europe, the US, and Asia.

Gary Jaitowal· Venture Partner· United Kingdomin

Gary Jaitowal is Chief Investment Officer and Managing Partner at Kathaka, where he serves as a board member and investor in more than 15 growth-stage technology platforms spanning late Seed through Series C. His earlier career included private equity investing in middle-market healthcare software at IndUS Growth Partners and strategy and product roles at GLG, a B2B marketplace backed by Bessemer Ventures and Silverake. He previously worked in academic healthcare research before moving into venture capital, with a focus on late Seed to Series C companies in the consumer and enterprise software segments.

Avi Ashkenazi· Head of Design· London, England, United Kingdomin

Avi Ashkenazi is Senior Director of Product Design at Deel, where he leads multidisciplinary design teams. He previously worked in design at Shopify.

Cristina Lasagni· VP Sales· London Area, United Kingdomin

Cristina Lasagni is the founder of FUTURAYA LTD, a consultancy providing cybersecurity and cloud architecture services to small and medium enterprises and system integrators across EMEA, with a focus on Cloudflare technologies, multi-cloud environments (AWS, Azure, GCP), regulatory compliance (GDPR, NIS2, DORA), and cloud cost management. She works as a fractional Chief Revenue Officer and angel investor, and her prior experience includes roles at Cloudflare, Dropbox, and Cisco.

Leo Balan· Director of Product· Greater Sydney Areain

Leo Balan is a Senior Manager of Creative Cloud Monetisation Growth at Adobe. He has more than 16 years of industry experience, with a focus on B2B SaaS growth and product management.

Marcus Granström· SVP Productin

Mike Scott· Machine Learning Engineerin

Ryan O’Holleran· Head of Salesin

Steve Pearce· VP Design· London, England, United Kingdomin

Steve Pearce is a design and product leader with nearly 30 years of experience leading multidisciplinary design teams in Europe and globally. He currently serves as an Advisor at Defiant and has held vice president of design roles at companies including Monday.com, TravelPerk, Checkout.com, Skyscanner, Skype, and Microsoft. He has also worked as a founding partner, advisor, and board trustee.

Russel Kaufman· Advisor· Swedenin

Holds leadership roles in academic internal medicine organizations with interests in cancer research.

What they invest in

from 2 of 2 portfolio companies

AI & Machine Learning ×1Consumer ×1Developer Tools ×1Enterprise Software ×1Hardware ×1IoT ×1

HQs:United States×2

Investments · 2 tracked

founders shown can be your intro path

Blitzyblitzy.com inJun 2026 · $200M

Autonomous software development for the enterprise (AI)

AI & Machine LearningDeveloper ToolsEnterprise SoftwareCambridge, US

Brian Elliott(Executive Officer, Director, Promoter)inSiddhant Pardeshi(Executive Officer, Director, Promoter)Sid Pardeshi(Founder)in

Board Sanjot Malhi(Director)in

Co-investorsAsymmetric Capital Partners Battery Ventures Bosch Ventures Flybridge Capital Partners Link Ventures New York Life Ventures +10 more

Deakodeako.com in 𝕏Seed

Deako manufactures smart home electrical switches and controls that enable wireless dimming, scheduling, and automation for residential applications.

ConsumerHardwareIoTSeattle, US

Derek Richardson(Founder/CEO)in

Board Doug Renert(Director)inBrian Weeks(Director)

Co-investorsGen Capital Tandem Capital Y Combinator Agrolimen Ventures Innolinks Ventures Kinetic Investments +5 more

Portfolio news

latest coverage across their companies

Blitzy Raises $200M: The Road to Enterprise AI Autonomy

Blitzy · blitzy.com · May 6, 2026

Frequently asked questions

What stage does Defiant invest at?: Defiant invests at the Seed, Series A stages.
What is Defiant's typical check size?: Defiant typically writes checks of $2M – $10M.
What sectors does Defiant focus on?: Defiant focuses on Enterprise Software, Fintech, SaaS.
Where is Defiant located?: Defiant is headquartered in London, GB.
Does Defiant lead rounds?: Yes, Defiant leads investment rounds.

Images

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