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 Solidity in the early days of the Ethereum Foundation to running DevSecOps for the Pentagon, our team comes from all walks of life with one key unifier - an unwavering dedication to scale web3 security.
Spencer
SpencerSpencer Macdonald is a cofounder of Spearbit. Previously, he was the US Army's product manager for Enterprise DevSecOps under the Army CIO at the Pentagon. He started off his career in tech as a product manager at Pet Wireless, an IoT company that was acquired by Purina.
Alex
AlexAlex Beregszaszi is a cofounder of Spearbit and possesses a deep level of expertise in the Solidity programming language and Ethereum. 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
JakeJake Lynch is a cofounder and advisor of Spearbit. Jake has spent his 6 year career in crypto researching protocols and economics. At Spearbit, Jake's focus is on community, marketing, and strategy.
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, 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.

LSRs

Our Lead Security Researchers are the absolute best in their fields. Rest assured - you’re in great hands.
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@lightclient
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@chrisethChristian Reitwiessner
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@adiasgAditya
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@nirvantyagiNirvan Tyagi
Cryptography Researcher
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@rodiazet
Programmer, mathematician, researcher. Member of ipsilon EF research team. In ecosystem since 2014.
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@gumb0Andrei Maiboroda
Researching and developing in Ipsilon team @ EF. Interested in all things Ethereum Execution Layer.
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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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@HickupHH3
Securitooor offering byte-sized security reviews
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@optimumsecOptimum
LSR at Spearbit, Indie researcher. Previously security researcher for a top tier auditing firm.
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@noahnoah.eth
Researcher and dev, Head of Security Reviews @spearbit
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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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@0xRajeev
Raising the bar of Ethereum security, one protocol at a time - WAGMI!
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@0xleastwoodLiam Eastwood
Im deeply fascinated by complex systems. Currently working as an LSR at Spearbit.
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@schaeffThibaut Schaeffer
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@zobrontZach Obront
bug huntooor
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@d-xoDavid Terry
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@maxsam4Mudit Gupta
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@Jonah246Jonah Wu
Independent Security Researcher
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@StErMi
I like to push myself over my limits and always raise the bar of my knowledge and skills.
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@chfastPaweł Bylica
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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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@brockelmoreBrock Elmore
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@yoavwYoav Weiss
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@dmitriiahyh
Independent researcher, multi-year track record in software dev, top 6 C4 and Sherlock, LSR Spearbit
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@IAm0x520x52
You build it, I break it. Helping to secure $250+ million across 100+ protocols.
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Avatar for MercysJest
@MercysJestWilson Nguyen
I’m a Stanford CS PhD student focusing on ZK Proofs.
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@kmbarry1Kurt Barry
Smart contract safety specialist.
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@hrkrshnnHari
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@rholterhusRiley Holterhus
Full-time smart contract reader, part-time everything else
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@gpersoonGerard Persoon
Doing a security review is like solving a complicated puzzle
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@leonardoaltLeo Alt
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@cmichelChristoph Michel
working as a smart contract security researcher since early 2021, having audited 100+ protocols
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