Harmonic

Harmonic are forging the world's most advanced mathematical reasoning engine

Harmonic has a big mission: to create mathematical superintelligence (MSI). MSI is artificial intelligence with mathematical capabilities superior to that of humans, and we believe its development will dramatically accelerate progress in quantitative domains including science and engineering.

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Generative AI

Investment Total
Blossom invested in Harmonic’s $75m Series A alongside Sequoia Capital

More Series A investments

Tines makes the lives of security and operations teams on the frontlines easier through advanced, contextually aware automation. Connect to any REST API or web application in seconds.

SaaS / Security

Eoin Hinchy and Thomas Kinsella profile from Tines
  1. Country:
    Ireland
  2. Sector: 
    Cybersecurity
  3. DAte of partnership: 
    Jul 2019
Blossom led Tines’s $4.1M Series A. Tines has most recently raised a $125m Series C from Goldman Sachs.
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Castor reinvents the way companies find and understand their way around data.

SaaS / Data

Picture of the castor team
  1. Country:
    France
  2. Sector: 
    Enterprise SaaS
  3. DAte of partnership: 
    Jun 2022
Blossom led Castor's $23.5m Series A round. Acquired in 2025 by Coalesce.
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Cado captures forensic data from compromised systems and enables security analysts to rapidly sift through the evidence and collaborate on investigations.

SaaS / Security

Cado team photo
  1. Country:
    UK
  2. Sector: 
    Enterprise SaaS
  3. DAte of partnership: 
    Mar 2021
Blossom led Cado's $10m Series A round. Cado has since raised a $17m Series B led by Eurazeo. Acquired in 2025 by DarkTrace.
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Maki is building a conversational AI agent that liberates HR teams

SaaS / HR

  1. Country:
    France
  2. Sector: 
    Enterprise SaaS
  3. DAte of partnership: 
    Jan 2024
Blossom led Maki's $28.6M Series A
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AutogenAI leverages generative AI to help companies write bids and tenders for public sector and corporate contracts.

Generative AI

AutogenAI Team
  1. Country:
    United Kingdom
  2. Sector: 
    Generative AI
  3. DAte of partnership: 
    JUL 2023
Blossom led Autogen AI's $22.3m Series A round. They've since raised a $39.5M Series B co-led by Salesforce Ventures and Spark Capital.
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Checkout’s mission is to build the future of commerce by building by a full stack technology that offers access to a payment gateway, advanced risk and fraud monitoring tools, a cutting-edge processor and the relevant acquirers, all in unified payments solution.

Infrastructure / Fintech

Guillaume Pousaz profile image from Checkout.com
  1. Country:
    UK
  2. Sector: 
    Financial Services
  3. DAte of partnership: 
    Apr 2019
Blossom invested in Checkout’s $230m Series A alongside DST Global and Insight Partners. Checkout has since gone on to raise their $150m Series B, $450m Series C and $1bn Series D.
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Early stage capital, long term strategy.

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