Photo of Alexander Wade

Alexander Wade

Security Engineer

Alex has been auditing smart contracts since he dropped out of college in 2017. Prior to pursuing computer science and security, he was studying to be a chemist. No matter the discipline, his interests follow a theme of understanding a system through dissection. When not auditing, Alex spends his time bouldering, making tea, or playing chess.

“You know, Hobbes, some days even my lucky rocket ship underpants don't help.”

—Calvin (Calvin and Hobbes)
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Bernhard Gomig

Security Engineer

IT Security enthusiast and always looking for a way to break things. He has worked in IT Sec since 2009, secured and administrated HA server systems for 3 years, changed to penetration testing for the following 10 years, and is now auditing smart contracts. Besides that, he is interested in behavior psychology and $THE_WHY.

:(){ :|:& };:

—Fork B.
Photo of Dominik Muhs

Dominik Muhs

Security Engineer

Dominik is an Information Security expert. With a background in Software Engineering, Data Engineering, and Data Science, Dominik is just as passionate about building things as he is about breaking them. Dominik enjoys hacking on open-source software, competing in CTFs and hackathons, and clinical psychology. He is co-founder of (P)Sei Pate, an NGO that guides people with PTSD back into a self-determined life.

Never underestimate the determination of a kid who is time-rich and cash-poor.

—Cory Doctorow, Little Brother
Photo of Gonçalo Sá (GNSPS)

Gonçalo Sá (GNSPS)

Security Engineer

Gonçalo is a passionate hacker since he can remember. Disassembling stuff was always his business, either online or at home. He founded 3 different startups (AdTech, BioTech, Mobile App) but when he realized his real love was decentralization, he turned to Ethereum and never looked back. Since then he has become an unapologetic technocrat that really believes in humanity with a little help from smart contracts. Whenever he’s able, you’ll find him writing or exploiting solidity code, climbing or playing paddle.

If you can't explain it to a six year old, you don't understand it yourself.

—Albert Einstein
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Heiko Fisch

Security Engineer

With an educational background in computer science and experience as a software engineer, Heiko became fascinated by blockchain technology in 2018. First hunting bugs in smart contracts for fun, security quickly became his passion. Another interest of his is layer 2, and before joining ConsenSys, he helped Connext build a cross-chain routing network based on state channels.

“Life is available only in the present moment.”

—Thich Nhat Hanh
Photo of John Mardlin

John Mardlin


John (aka Maurelian) is a security engineer, and a founding member of ConsenSys Diligence. He is a regular writer and speaker on smart contract security. Prior to joining ConsenSys, John worked at Coinbase.

The art of living is more like wrestling than dancing.

—Marcus Aurelius
Photo of Joran Honig

Joran Honig

Security Engineer

Joran is a security engineer with a passion for automation and software analysis. He has worked on techniques like mutation testing, symbolic execution, fuzzing and static analysis.

You see, but you do not observe.

—Sherlock Holmes
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Liz Daldalian

Program Manager

Liz is a program manager with a background in business operations and software project management. In 2018 she started working in Ethereum, drawn in by the promise decentralization has to reshape our world into one that is more equitable and accessible. Prior to Diligence Liz worked at Truffle Suite.

If I had an hour to solve a problem and my life depended on the solution, I would use the first 55 minutes determining the proper question to ask, for once I know the proper question, I could solve the problem in less than five minutes.

—Albert Einstein
Photo of Martin Ortner (tintinweb)

Martin Ortner (tintinweb)

Security Engineer

A passionate Information Security expert with a background in Software Engineering, Software Quality Management and Automation, Software Vulnerability Research and Exploitation as well as Information Security Management that joined the Blockchain/DLT ecosystem to push for security.

breaks your things ❤

Photo of Nicholas Ward

Nicholas Ward

Security Engineer

Nick has been hacking smart contracts since 2017, when he moved from the world of open-channel hydraulics to open finance and open source. He enjoys whitewater kayaking, over-optimization, and unambiguous program specifications.

Anyone can build a bridge that stands. The trick is building one that barely stands.

Photo of Sergii Kravchenko

Sergii Kravchenko

Security Engineer

Sergii is a very talented hacker, he has been a big fan of math and algorithms since early childhood. Before joining ConsenSys Diligence he spent years developing complex high-frequency trading systems. Sergii was also doing machine-learning research and created a few fully automated hft strategies. While auditing he’s aiming to find the most complex and sophisticated ways to hack the system in order to secure it.

Once you stop learning, you start dying.

—Albert Einstein
Photo of Shayan Eskandari

Shayan Eskandari

Security Engineer

Shayan is a hacker with a thirst for knowledge. While conducting security research at Dilligence, He's doing his PhD in Information systems on blockchain and evolution of crime. He was formely working as Blockchain Engineer building Bitcoin ATM backend services and enterprise wallets. He has been doing research on Bitcoin (and later blockchain tech) since 2012.

The best time to plant a tree was twenty years ago, the second best time is now.

Photo of Steve Marx

Steve Marx


Steve built and before joining ConsenSys. He now works primarily on smart contract audits. Prior to his Ethereum work, he worked in various roles at Microsoft and Dropbox and cofounded Site44.

Programming is typing one thing and if that doesn't work typing a different thing.

—Steve Marx
Photo of Valentin Wüstholz

Valentin Wüstholz

Security Researcher

Valentin has many years of experience in developing tools and techniques that allow us to produce more reliable and correct software. He received a Ph.D. in Computer Science from ETH Zürich and has been a lead developer for several software analysis tools over the years. Before joining ConsenSys, he built a system for identifying correctness, security, and performance issues in Ethereum smart contracts.

Simplicity is prerequisite for reliability.