CORE VALUES
We pledge to always uphold the highest standards of transparency, trust and talent to ensure that our clients can feel confident in the security services we offer to be the absolute best across the ecosystem.

LEADERSHIP

Meet our team. From building the Solidity compiler and improving the Ethereum Virtual Machine (EVM) to securing the cloud, our backgrounds converge with a shared mission: an unwavering dedication to scaling web3 security.
Hari
HariHarikrishnan Mulackal is a cofounder of Spearbit and well-known as one of the best code optimizers in the world of Solidity. Coming from the Ethereum Foundation (joined in 2020), he is a leading expert in the Ethereum compiler and Ethereum Virtual Machine. With a background in mathematics, Hari formerly worked for the Ethereum Foundation building the Solidity language, and has given numerous technical talks and participated in panel discussions at top blockchain industry conferences.
Alex
AlexAlex Beregszaszi is a cofounder of Spearbit and possesses a deep level of expertise in the Solidity programming language, the Ethereum Virtual Machine and Ethereum. Since 2015 he was an early contributor to and co-lead of the Solidity team at the Ethereum Foundation, as well as being lead of Ipsilon and Ethereum WebAssembly research teams. Alex has delivered numerous presentations at top industry conferences.
Jake Lang
Jake LangJake Lang is a cofounder of Spearbit. Previously, starting 2016, he worked at Ethereum on the Ethereum WebAssembly team (now known as Ipsilon) and has contributed to various improvements to the Ethereum Virtual Machine. He has a background in operating systems, compiler engineering, and cloud security.
Jake Lynch
Jake LynchJake Lynch is a cofounder of Spearbit. Since 2017, Jake has spent his career in crypto researching protocols, economics and working as an investor.

LSRs

Our Lead Security Researchers are the absolute best in their fields. Rest assured - you’re in great hands.
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@optimumsecOptimum
LSR at Spearbit, Indie researcher. Previously security researcher for a top tier auditing firm.
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@skylenetRafael Matias
I run my own nodes. Running blockchain infra since 2018.
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Avatar for chfast
@chfastPaweł Bylica
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@maxsam4Mudit Gupta
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@axicAlex Beregszaszi
Co-founder of Spearbit and Cantina. Researcher in Ipsilon.xyz. Former co-lead of the Solidity team.
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@D-NiceDenis Miličević
Smelted by TradFi, forged for a decade in the fires of blockchain and DeFi.
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@guidovrankenGuido Vranken
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@nirvantyagiNirvan Tyagi
Cryptography Researcher
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@deadrosesxyz
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@xmxanuelManuel Polzhofer
Security Researcher | curious, yet I will not forget to pause and ponder
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@Jonah246Jonah Wu
Independent Security Researcher
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@brockelmoreBrock Elmore
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@leonardoaltLeo Alt
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@lightclient
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@dmitriiahyh
Independent researcher, top 7 Sherlock and C4, LSR Spearbit
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@yoavwYoav Weiss
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Avatar for zobront
@zobrontZach Obront
bug huntooor
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Avatar for gumb0
@gumb0Andrei Maiboroda
Researching and developing in Ipsilon team @ EF. Interested in all things Ethereum Execution Layer.
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Avatar for rodiazet
@rodiazet
Programmer, mathematician, researcher. Member of ipsilon EF research team. In ecosystem since 2014.
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Avatar for noah
@noahnoah.eth
Researcher and dev, Head of Security Reviews @spearbit
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@0xRajeev
Raising the bar of Ethereum security, one protocol at a time - WAGMI!
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@kmbarry1Kurt Barry
Smart contract safety specialist.
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@parithoshj
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@0xleastwoodLiam Eastwood
I like to read code.
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@fradamtFrancesco Damato
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@Saw-mon-and-NatalieSaw-mon and Natalie
Interested to review projects with innovative ideas using higher level mathematics and cryptography.
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@GothicShanon89238
Friendly script kiddie
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@schaeffThibaut Schaeffer
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Avatar for gpersoon
@gpersoonGerard Persoon
Doing a security review is like solving a complicated puzzle
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Avatar for StErMi
@StErMi
I like to push myself over my limits and always raise the bar of my knowledge and skills.
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@IAm0x520x52
You build it, I break it. Helping to secure $250+ million across 100+ protocols.
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@rholterhusRiley Holterhus
Full-time smart contract reader, part-time everything else
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Avatar for cmichel
@cmichelChristoph Michel
working as a smart contract security researcher since early 2021, having audited 100+ protocols
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@d-xoDavid Terry
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@hrkrshnnHari
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@MercysJestWilson Nguyen
I’m a Stanford CS PhD student focusing on ZK Proofs.
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@chrisethChristian Reitwiessner
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@ed25519ed255
zk engineer
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@HickupHH3
Securitooor offering byte-sized security reviews
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@adiasgAditya
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