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Siraj Khaliq

Investor

Board director at Fabricnano · Board director at PSI Quantum · Former Partner at Atomico

London

Writes $5M – $15M checks · typically $10M

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Ask Jinal Jhaveri to introduce you to Siraj

You →Jinal · together at The Climate Corporation (2006–2008) →Siraj

Ask Jamie Chen to introduce you to Siraj

You →Jamie · 4 people · together at The Climate Corporation →Siraj

Ask Sam Okafor to introduce you to Siraj

You →Sam · 6 people · together at Atomico →Siraj

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About

Siraj Khaliq is CEO and co-founder of Kritos AI. Previously, he worked as an engineer at Google and co-founded Climate Corporation before joining Atomico as an investor focused on deep tech startups at Series A and beyond. His background includes early work in distributed systems and large-scale data infrastructure.

Likely emails· guessed from name + firm domain, not firm-published

Board director at Fabricnano

Intro paths

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In turn, Siraj can intro founders to Fabricnano's investors below.

Fabricnano's investors · 25

Air Street CapitalSt. Peter Port · $500K – $10M checks · since 2019Amadeus Capital PartnersLondon · $50K – $12.7M checks · since 2021AtomicoLondon · since 2021BackedLondon · $500K – $5M checksBlossom CapitalLondon · since 2021BoxOne VenturesMontréal · $500K checksCharlie Songhurstsince 2019Dawn CapitalLondon · $317.5K – $6.3M checks · since 2021Dell Technologies CapitalPalo Alto · $500K – $50M checks · since 2021Entrepreneur FirstBengaluru · $1M – $7M checks · since 2019foobar.vcReykjavik · since 2019General CatalystSan Francisco · $30M checks · since 2021Hitachi VenturesMunich · since 2021Hoxton VenturesLondon · $500K – $5M checks · since 2021Insight PartnersNew York · $120M – $350M checks · since 2021LocalGlobeLondon · since 2021Merck Global Health Innovation FundRahway · $10M checks · since 2021Olima VenturesWashingtonPace VenturesBerlin · $550K – $1.6M checksPassion CapitalLondon · since 2021SeedcampLondon · $378K – $1.1M checks · since 2019Sequoia CapitalMenlo Park · $100K – $50M checks · since 2019SoftBank GroupTokyo · since 2019SOSVNew York · $30K – $550K checks · since 2021Y CombinatorSan Francisco · $500K checks · since 2021

Co-founders at Fabricnano

GAGrant Aarons
Grant AaronsExecutive Officer, Director, Promoter

Board director at PSI Quantum

Intro paths

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In turn, Siraj can intro founders to PSI Quantum's investors below.

PSI Quantum's investors · 45

1789 CapitalPalm Beach · since 2025AtomicoLondon · since 2025Baillie GiffordEdinburgh · since 2021Blackbird VenturesSydney · $149K – $60M checks · since 2025BlackRockNew York · since 2020Blumberg CapitalMiami · $500K – $5M checks · since 2021C4 VenturesParis · $500K – $10M checks · since 2025Cold Start VenturesNew York · since 2025FOG Venturessince 2025Founders FundSan Francisco · $500K – $5M checks · since 2025FPVJackson · $100K – $5M checks · since 2025HARPER COURT VENTURESChicago · since 2025HouseBerkeley · $1M – $2M checks · since 2025imec.xpandLeuven · $270K – $5.4M checks · since 2025Integra GroupeMenlo Park · $100K – $200K checks · since 2025Ischyros New YorkNew York · $250K – $3M checks · since 2021M12 (Microsoft's Venture Fund)Seattle · $100K – $10M checks · since 2025Macquarie CapitalSydney Nsw · since 2025MetaplanetTallinn · $500K – $10M checks · since 2025MFV PartnersSan Francisco Bay Area · $1M – $5M checks · since 2025Multicoin CapitalAustin · $1M – $50M checks · since 2025New Ground VenturesWestport · since 2025NVenturesSanta Clara · since 2025NVIDIASanta Clara · since 2025Open Field CapitalNew York · since 2025PitangoTel Aviv · $2M – $40M checks · since 2025Playground GlobalPalo Alto · $1M – $20M checks · since 2025Qatar Investment AuthorityDoha · since 2025Redpoint VenturesWoodside · $100K – $10M checks · since 2025Ribbit CapitalPalo Alto · $2M – $15M checks · since 2025Roadster CapitalPortland · since 2025S VenturesMountain View · $1M – $5M checks · since 2025Scale-Up CapitalPalo Alto · since 2025SciFi VCSan Francisco · $100K – $1M checks · since 2025Sound VenturesSanta Monica · since 2025Stack CapitalToronto · since 2025T. Rowe PriceBaltimore · since 2025TEL Venture Capital, Inc.Fremont · since 2025TemasekSingapore · since 2021Third PointNew York · since 2025Third Point VenturesMenlo Park · since 2025Transform Investmentssince 2025Tribeca Early Stage PartnersNew York · $1M – $2M checks · since 2025Type One VenturesLos Angeles · $100K – $5M checks · since 2025WorldQuant VenturesOld Greenwich · since 2025

Co-founders at PSI Quantum

PTProf. Terry Rudolph
Prof. Terry RudolphCo-founder & Chief Architect
DPDr. Pete Shadbolt
Dr. Pete ShadboltCo-founder & Chief Scientific Officer
PMProf. Mark Thompson
Prof. Mark ThompsonCo-founder & Chief Technology Officer
JOJeremy O'Brien
Jeremy O'BrienFounder
MT
Mark ThompsonFounder
PS
Pete ShadboltFounder
PS
Peter ShadboltFounder
TR
Terry RudolphFounder

Experience

  1. Kritos AICEO & co-foundercurrent2026 — present
  2. Kembara VCSenior Strategic Advisorcurrent2025 — present
  3. ScanditBoard Membercurrent2017 — present
  4. PsiQuantumBoard Member2019 — 2026
  5. GraphcoreBoard Member2017 — 2024
  6. AtomicoInvestment Partner2015 — 2023
  7. AploBoard Member2021 — 2023
  8. CloudNCBoard Member2018 — 2023
  9. arculus – a Jungheinrich companyBoard Member2020 — 2021
  10. The Climate CorporationCo-founder & Chief Technical Officer2006 — 2013San Francisco Bay Area
  11. Google IncStaff Software Engineer2002 — 2006Mountain View, California, United States

Skills & more

Organizational LeadershipBoard of Directors

From Siraj's professional profile.

Deals · 1

FabricnanoBoard seat

via Atomico · filed Jun 2021 · $12.5M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Board seats

PSI Quantum

Sources: SEC Form D filings · curated public sources.

Frequently asked questions

Who is Siraj Khaliq?
Siraj Khaliq is CEO and co-founder of Kritos AI. Previously, he worked as an engineer at Google and co-founded Climate Corporation before joining Atomico as an investor focused on deep tech startups at Series A and beyond. His background includes early work in distributed systems and large-scale data infrastructure.
Where does Siraj Khaliq work?
Siraj Khaliq is Board director at Fabricnano and Board director at PSI Quantum.
What check size does Siraj Khaliq write?
Siraj Khaliq typically writes checks of $5M – $15M.
What boards does Siraj Khaliq sit on?
Siraj Khaliq holds tracked board seats at Fabricnano, PSI Quantum.
What companies has Siraj Khaliq invested in?
Investments tracked here include Altruistiq, Arculus, Avrios, Cleo, CloudNC, Eastnine, Fabricnano, Graphcore Limited, Invisible Technologies, Jua, RosieReality, Scandit, and 3 more.
Where did Siraj Khaliq go to school?
Siraj Khaliq studied at Stanford University (MS, Computer Science); University of Cambridge (BA, MA Hons, Computer Science).

Founder mafias

Same school

Shared employers