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The Quantstamp Team

Our diverse and talented team comes from companies like Google, Facebook, Apple, Goldman Sachs, BMW, Visa, and MathWorks. We are a top team of PhDs and security professionals with a wealth of experience. Together, we are here to do some of the best work of our careers, while defining a new standard in blockchain security.
Richard Ma

Richard Ma

Co-founder & CEO

Richard Ma is a former software engineer at Tower Research where he developed software that handled millions of dollars using extreme testing methods. He was inspired to found Quantstamp after investing in the DAO and experiencing the aftermath firsthand. Richard aims to secure the future of blockchain technology through the Quantstamp protocol.

Steven Stewart

Steven Stewart

Co-founder & CTO

Steven Stewart is Co-founder and Chief Technology Officer at Quantstamp. Previously, he has worked as a Software Engineer and Computer Systems Analyst at the Canadian Department of National Defense. He also co-founded GPU computing startup Many Trees Inc., and has worked as a Software Developer at Magnetic Forensics.

Linda Selker

Linda Selker

VP of Legal

Linda Selker was formerly VP/Associate General Counsel at Visa and Senior IP counsel at HP. At Visa, Linda played a key role in improving the security around mobile wallets. She has a JD from Georgetown University’s School of Law, a Masters Degree in Electrical Engineering from Cornell, and a bachelor’s in Electrical Engineering & CS from UC Berkeley.

Don Ho

Don Ho

Business Development

Don is an investor and entrepreneur with global perspectives and cross-functional experiences supporting investments, product and growth. Don previously worked at IDG Ventures and PNP Ventures where he helped launch Nexla, Ayasdi, and the Los Angeles Football Club.

Krishna Sriram

Krishna Sriram

Business Development

Krishna is an early blockchain investor with extensive experience in building the Ethereum community in Vancouver, Canada. Krishna is an expert at community outreach and forming global partnerships. He is a University of British Columbia graduate.

Kei Oda

Kei Oda

Head of Japan and APAC

Kei leads Quantstamp’s business in Japan and Asia-Pacific. Before Quantstamp, Kei spent 16 years working as a macro rates trader at Goldman Sachs in London and Tokyo. Kei loves thinking about macro trends and sees blockchain as the future of money. He received his Masters in Economics from the University of Cambridge.

Jackson Walker

Jackson Walker

Lead Product Designer

Jackson’s focus includes user-centered product design, vector visual design, high-fidelity UI, motion, branding and rapid prototypes. He’s designed for Google, Apple, and managed design teams several startups. He believes that premium design is simple, polished, and solves real user problems with a focused utility.

Tristan Tomas

Tristan Tomas

Operations Officer

As Quantstamp’s Operations Officer, Tristan helps keep the business running smoothly. Before coming to Quantstamp, he worked for Facebook, Twitter, and the IRS. He is a veteran and a blockchain investor.

Olga V. Mack

Olga V. Mack

VP of Strategy

Olga V. Mack is Vice President of Strategy at Quantstamp. Most recently, she served as General Counsel at ClearSlide, and she has held various roles at Visa, Zoosk, Pacific Art League, Wilson Sonsini, and Yahoo. She earned both her J.D. and B.A. from UC Berkeley.

Kacper Bąk

Kacper Bąk, Ph.D

Senior Research Engineer

Kacper is an expert in software modeling and verification. He received a PhD in Computer Science from the University of Waterloo for his work on modeling and analysis of software product lines. Before coming to Quantstamp, he worked at MathWorks(maker of MATLAB), Opera, and Samsung.

Leonardo Passos

Leonardo Passos, Ph.D

Senior Research Engineer

Senior Research Engineer Leonardo has a Ph.D. in Electrical and Computer Engineering from the University of Waterloo for his work on mining patterns from the Linux kernel source code and other systems. He is a Microsoft research competition medalist, with industry experience in backend development, compilers, and scalable data pipelines.

Amir Marmar

Amir Marmar

Director of Finance

Amir Marmar has spent over 20 years working in Accounting & Finance and is now recognized as one of the leading crypto accountants. Amir has led many companies to successful exits including selling Coinsetter Inc. to Kraken in 2016. When Amir isn’t working, he spends time with his wife Laura and girls Madison and Mia.

Sebastian Heit

Sebastian Heit

Front End Developer

Sebastian is an experience designer and front-end developer with a background in Architecture, focused on delivering user experiences for web and mobile applications. Previously, he co-founded two consulting firms –Zimmic & Crafted– to serve corporate clients and startups in the Salesforce and Ruby on Rails ecosystems.

Jared Harrill

Jared Harrill

Community Manager / Advocate

Jared developed his community management skills in Vancouver, Canada, where he was heavily embedded in the cryptocurrency community. Jared is an expert in decentralized organizational governance and has experience in communications and design.

David Partridge

David Partridge

Community & Office Manager

David is an award winning and innovative community manager with a vision for a more decentralized future. Having worked across many industries and continents, he has etched a unique skillset to help him connect people and build cultures. His efforts are now focused on making Quantstamp a recognized industry leader.

Alex Murashkin

Alex Murashkin

Senior Software Engineer

Alex is a full-stack software engineer with advanced knowledge of Amazon Web Services and cloud computing security. He also has experience in designing and implementing distributed systems and serverless computing architectures.

Emily Hinojos

Emily Hinojos

Executive Assistant

Emily previously worked for the Office of the Legal Defender within Maricopa County. As a Legal Support Specialist, she contributed both on the administrative side along with the day-to-day Operations of the Department. Within the Juvenile Dependency / Severance Division she completed detailed projects while effectively handling multiple priorities.

Julian Martinez

Julian Martinez

Staff Writer

Julian is a cryptocurrency enthusiast and blog writer. He hopes to help blockchain technology achieve its full potential by translating its importance to the masses. He graduated from UC Berkeley and was a non-profit director.

Yohei Oka

Yohei Oka

Forward Deployed Engineer

Yohei is a full stack engineer with experience working at both startups and larger tech companies. Most recently, Yohei was in Seattle working on Amazon Go. Yohei got involved with blockchain through arbitrage and bot-trading and is now a big believer in the future of smart contracts. Yohei loves gourmet dining.

Jan Gorzny

Jan Gorzny

Blockchain Researcher

Jan is a Ph.D candidate at the University of Waterloo. His research interests include complexity theory, software verification and formal methods, discrete mathematics, and blockchain technologies.

John Bender

John Bender

Senior Research Engineer

John Bender is an experienced software developer with a history of involvement in a variety of different software projects like Vagrant and jQuery. He can often be found with the UCLA Compilers Group where he focuses on compiler optimizations and formal methods for concurrency and weak memory models.

Michael Teixeira

Michael Teixeira

Software Engineer

Michael is a software engineer for Quantstamp working on the protocol team. Before Quantstamp, Michael worked as a full stack developer for Scotiabank and Hubba, later focusing on blockchain development. He has a bachelors from McGill University.

Ed Zulkoski

Ed Zulkoski, Ph.D

Senior Security Engineer

Ed holds a PhD in Computer Science from the University of Waterloo. His research there was primarily in SAT/SMT solvers and formal verification technologies, with a focus on understanding what makes SAT formulas hard or easy for solvers. Before joining Quantstamp, he worked at Microsoft Research.

Dan Zhang

Dan Zhang

Senior Copywriter

Dan Zhang supports Quantstamp's PR and marketing communications with years of experience writing for high-tech PR agencies and brands. Before pivoting to writing, he worked as an enterprise IT consultant with IBM. Dan has a computer engineering degree from the University of Maryland and is a patent author.

Martin Derka

Martin Derka, Ph.D

Senior Research Engineer

Martin holds a Ph.D. in Computer Science from the University of Waterloo. He also studied at Brock University, McMaster University, Masaryk University in the Czech Republic, and has additional degrees from some of these. He is former Vanier Scholar and a brief NSERC post-doctoral fellow at Carleton University.

Leo Antelyes

Leo Antelyes

Software Engineer

Leo is a Full Stack Engineer that has experience creating robust, user friendly, and responsive web applications relating to a wide range of different projects. Leo has worked on platforms and software used by the Australian Defence Force, United States Military, and the North Atlantic Treaty Organization.  He has a passion for new and disruptive technology.

Karina Crooks

Karina Crooks

Communications Specialist

Karina is a marketing and communications professional focused on sharing the vision, mission and story behind Quantstamp. Most recently, she served as a marketing lead for events focused on communities in FinTech, Voice Technology, Machine Learning and CI/CD DevOps. She also enjoys travel, hiking and snowboarding.

Helena Flack

Helena Flack

Communications Specialist

Helena has over 12 years of PR and Communications experience, both in-house and agency, most recently being at Parity Tech. She is a co-organiser of ETHBerlin. Additionally, she works on the communications strategy for ETHGlobal, and helps out with the organization for multiple hackathons and community events, shaping their community strategy.

Kyle Dunn

Kyle Dunn

DevOps Engineer

Kyle strives to be a technology generalist; his background spans traditional engineering, data-intensive computing, and more recently, security tooling for the Ethereum blockchain.  In his free time he enjoys mentoring at an after school program for a local high school, photography, and using public data to improve government accountability.

Would you be interested in joining the team?

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