About | Consensys Diligence

Team

Arturo Roura

Security Engineer

Arturo had a career in hospitality management and luxury brand sales before a chance encounter with "Mastering Bitcoin" turned his world upside down. The world of blockchain became a never-ending source of fascinating topics, drawing him from developing smart contracts to securing them, eventually becoming a bug-bounty hunter. When he's not diving into the depths of decentralization, you might find Arturo perfecting his golf swing or exploring new culinary adventures.

The mind is not a vessel to be filled, but a fire to be kindled.
—Plutarch

Chingiz Mardanov

Security Engineer

With degrees in Computers and Data Science Chingiz comes from a traditional software engineering background, previously building at Unity and Metamask. This then transitioned into developing DeFi protocols and eventually securing them.

Tell me and I forget. Teach me and I remember. Involve me and I learn.
—Benjamin Franklin

Dimitar Bounov

Backend Software Engineer

I am interested in PL/static analysis and their applications in security. In the past I've looked at hardening binaries with compiler techniques and applying gamification to problems in verification. Currently developing the Scribble specification language, as well as the Maru-IR and Maru static analyzer for Solidity.

You are what you do, not what you say you'll do.

François Legué

Security Engineer

My passion for security has been the driving force behind my career. Beginning as a penetration tester, then I delved into the intricacies of low-level reverse engineering before discovering a fascination with the decentralized realm of blockchains.

True knowledge exists in knowing that you know nothing.
—Socrates

George Kobakhidze

Security Engineer

Math & Technology have fascinated George since childhood. This led him to a degree in Applied Mathematics and a career in software, where he focused on the people aspect of tech -- privacy, personal data, digital identity, human-made data and so on. Eventually he found Ethereum and smart contracts, a promising world that seemed to perfectly fit his interests. At Consensys Diligence he decided to specialize in security auditing to help the technology get adopted safely as smart contract usage skyrockets. In his spare time you can find him traveling the world and enjoying the little things in life.

One for all and all for one.

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. 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

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

João Santos

Fullstack Developer

Hey there, I'm João! I've been part of Consensys since 2018 and Diligence since 2020. I've had a blast so far. I got into crypto during my MSc while working on web annotations, which led me to start writing solidity smart contracts. After that, I moved to MythX and started doing frontend development. Nowadays, I do a little bit of everything, but I mostly work on our Fuzzing product. When I'm not coding, I enjoy running and climbing (though not at the same time, usually!). I also love learning new things and taking on new challenges - like participating in hackathons!

Don't stop when you're tired, stop when you're done.

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

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.

The cat is in the sack, but the sack is not closed. The cat is in it, but it's open...and it's a wild cat.
—Giovanni Trapattoni

Pedro Santos

DevOps Engineer

Pedro is a DevOps with a background in software and data engineering. His passion for automation and robotics led to an Electrical and Computer Engineering degree and autonomous robots competitions. When he is not breaking environments you will find him climbing or at least trying to.

Talk is cheap. Show me the code.
—Linus Torvalds

Rai Yang

Security Engineer

With a diverse software development experience in embedded system, distributed system and gaming, Rai found his passion in the world of decentralization, Ethereum, privacy and crypto(graphy) a few years ago. Since then he is having fun with building and hacking in the blockchain world (mostly Ethereum).

When I let go of who I am, I become who I might be
—Lao Tzu

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

Tobias Vogel

Product Manager

Tobi has background in banking and business consulting where he mostly helped teams to get more efficient and to reach their goals. He is co-founder of (P)Sei Pate, an NGO that guides people with PTSD back into a self-determined life. Dominik showed him the coldest water to jump in to called Ethereum. When he is not trying to wrap his head around web3 you'll catch him skateboarding or at a rave.

We don't make mistakes, just happy little accidents.
—Bob Ross

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. At Consensys Diligence, he focuses on various R&D efforts, including the Harvey fuzzer and the Scribble specification language.

Simplicity is prerequisite for reliability.
—Edsger W. Dijkstra

Vlad Yaroshuk

Security Engineer

Starting in early 2017, Vladislav became interested in blockchain technology and embraced a crypto-anarchist philosophy. With a degree in Automation and Control Engineering, Vladislav has a strong understanding of low-level programming. He has experience working with MEV and was a Solidity developer for a cross-chain protocol. After successfully participating in bug bounties and audit contests, he transitioned into the security space, where he has helped secure billions in user funds. In addition to audits, he actively researches past exploits and writes blog posts about them.