We are a group of software developers, entrepreneurs, investors and cryptographers with a shared passion for building a fair, secure and decentralized blockchain open source platform.

Prof. Tal Moran

chief scientist

Tal has been a faculty member at the Efi Arazi School of Computer Science at the Interdisciplinary Center (IDC) Herzliya since 2011. Prior to that, he was a postdoctoral research fellow at the Center for Research on Computation and Society at Harvard University. He holds a Ph.D. from the Weizmann Institute of Science, where his advisor was Moni Naor. Tal's research focuses on employing ideas and techniques from theoretical cryptography to design secure systems for the “real world.” He's also interested in the foundations of cryptography and the theory of cryptography in general.

Dr. Iddo Bentov

chief scientist

Iddo, who has been involved in the Bitcoin space since 2011, is a postdoctoral researcher at Cornell University and the author of several academic papers on cryptography and cryptocurrency. He also works on succinct zero-knowledge proofs at SCIPR Lab, and holds a Ph.D. in Computer Science from the Technion - Israel Institute of Technology.

Julian Loss


Julian grew up in Basel, Switzerland, and holds an M.Sc. in Computer Science from ETH Zurich. He is currently a Ph.D. student in the general field of provable security at the Ruhr University Bochum, Germany. His interests include efficient and practical designs of basic cryptographic primitives such as digital signatures, protocols for distributed consensus, and watching rhino calfs at play. He also enjoys hiking in the mountains and long distance running.

Yuval Zalmenson

dev lead

A self-motivated, hands-on software engineering leader, Yuval has over 12 years of experience in the domains of network security and storage systems. Passionate about solving hard problems and learning what tickles people, in his spare time he likes to unwind with intermediate problems and tickle people. He holds an M.Sc. from the Efi Arazi School of Computer Science at the Interdisciplinary Center (IDC) Herzliya (cum laude) and a B.Sc. in Mathematics and Computer Science from the Technion - Israel Institute of Technology (cum laude).

Anton Lerner 

software engineer

A free spirit, dog lover (That doesn’t actually own a dog) and professional pub crawler, started his career in an elite IDF cyber unit, a hands on developer with a passion for learning and understanding how things actually work. Anton has more than a decade of experience both leading and developing various products ranging from storage systems to cyber security products. with a passion for elegant problem solving and an eternal smile he brings a special redhead fire to the team.

Yosher Lutzki

software engineer

Yosher started writing software at a young age and he can't stop since then, worked on full-stack web apps as well as scalable backends and data processing systems. he works on the P2P layer of Spacemesh. On weekends he spends most of his time gardening, camping, and baking muffins while listening to electro-jazz. He talks way too much about decentralization and privacy. We especially like his muffins, but he's also pretty smart.

Almog De-Paz

software engineer

Almog has been in the industry for several years working on things like cyber security, big data analytics and robotics AI. He loves challenging himself by learning new fields, tackling difficult problems and listening to music (sometimes simultaneously).When he's not doing that, he likes to work on his guitar chops, Almog holds a BSc in information systems engineering from BGU.

Elad Gavra

software engineer

Elad is a young-age tech-enthusiast developer. He began his way destroying computers, writing code for fun and solving math & computer science puzzles. He holds a B.S.C degree from Bar-Ilan University and has a great interest in Networking, Machine Learning and Algorithms. In his spare time, he likes to travel, dance and speak Spanish.

Noam Nelke

software engineer

Noam got his first computer as a young boy sometime in the 80s and has been hacking ever since. Armed with an M.Sc. in machine learning, he embarked on a career developing servers as well as web and mobile clients. Bitten by the crypto bug, he found his way to Spacemesh where he was able to delete 300k+ lines of code in his inaugural week. He’s a polyglot (versed in 9 spoken and programming languages), father of two and husband of one.

Yaron Wittenstein

software engineer

Yaron loves coding more than anything else. He constantly seeks to leave his comfort zone and learn new things, and truly believes that striving for high quality and having long-term thinking are the keys to success. Before joining Spacemesh, Yaron served in the IDF's elite Intelligence Unit 8200, and earned his B.Sc. in Computer Science from the Technion – Israel Institute of Technology. When he's not at work, Yaron enjoys watching football, going to the gym and reading history books.

Yuval Haspel 

Software Engineer

A software engineer by day and the sleep-deprived father of a baby girl by night, Yuval's passion for coding and development ensures that he arrives every day for work with a smile on his face. Yuval holds a Bachelor of Science in Software Engineering (summa cum laude) from Kinneret College, and in his spare time, (while his daughter is napping), besides being an amateur photographer, he trains dogs for competition in Tracking, Obedience and Protection.

Moshe Shababo 

software engineer

Moshe feels incredibly grateful to be making a living from writing code, which is really just his substitute for playing MS-DOS games. In light of his obsession regarding the formation of trust and consensus in human endeavors, he feels equally fortunate to have found a safe haven in blockchain space.

Isaac Beckman 

software engineer

Isaac joined the Spacemesh team to establish a culture of automation, and brought with him more than 12 years of experience in the fields of software development and automation both as a developer and as an agile team leader. He's passionate about (you'll never guess) automation challenges, which he solves by applying cutting-edge technology no one else can understand. He spends most his free time at wine tastings and traveling the world with family and friends. While he holds an M.Sc degree in Computer Science from Ben Gurion University, he spends the rest of his free time trying desperately not to lose when playing video games with his sons.

Iyar Dael

Marketing Intern

A recent graduate with a degree in Law and Business Administration, Iyar has joined Spacemesh to increase its marketing efforts worldwide. She loves doing Yoga, but her favorite hobby is food tasting. In fact, she knows all of the greatest restaurants in Tel Aviv – new and old – so don't hesitate to ask for recommendations!

Your Name Here! 

your dream job

We are actively looking to grow our founding team with exceptional talent. Please get in touch if you want to join our community.
Join Us

Doron Avital 


Doron Avital holds a PhD from Columbia University in the City of New York in Logic and Philosophy (2004). He completed his BSc in Mathematics and Computer Science (1985), and his MA (Summa Cum Laude) at the Cohen Institute for the History and Philosophy of Science and Ideas at Tel Aviv University (1996). He held key positions in the IDF Intelligence (1977-1995) culminating with the position of Chief-Commanding-Officer of Israel’s most distinguished elite unit (1992-4). He was awarded Columbia University’s Presidential Fellowship (1995-2001) and numerous IDF military and special operations awards.

Gal Alkobi

Head of HR

Gal has over seven years of experience in HR, recruiting the best talent and – more importantly - the right people. Her greatest loves include event organization, amateur photography and…. helping people! Her job at Spacemesh thankfully enables her to do all three, which is why she's so good at it. 24/7, you'll find Gal taking care of our staff, safeguarding their wellbeing and ensuring that each one has what they need to be their very best. Gal holds a bachelor's degree in Business Management and a master's degree in Organizational Behavior.

Ifat Linur

head of operations

Ifat brings over 20 years of global management experience to Spacemesh. Her passion for the worlds of innovation and new technology always leads her back to the startup realms, where the future meets the now. She has served as the general manager of Interlude (now Eko), a digital media tech company that is revolutionizing online video storytelling, and as VP Biz Dev for Scidel Tech, a Scitex subsidiary on the cutting-edge of virtual advertising. In her spare time she's working on her private pilot's license, as well as – no, just kidding. Ifat doesn't have any spare time.

Tomer Afek


Tomer has spent over three decades on both sides of the startup table. He helped to found Showbox.com, and was the co-founder/CEO of ConvertMedia, a Big Data startup (acquired by Taboola). Prior to that, he spent seven years as an investor at Evergreen VC, among one of Israel’s oldest and largest VCs, where he was in charge of Internet & New-Media investments. Tomer was also on the founding team of Sanctum Inc., a leader in web application security. He holds a B.Sc. in Economics and Computer Science (cum laude) from Tel Aviv University.

Rami Kasterstein


Rami is the Managing Partner at Scale-Up Venture Capital. Prior to that, for over 25 years, Rami was the founder, CEO and/or venture investor of several successful startups. He holds an M.Sc. in Computer Science (cum laude) from the Weizmann Institute, and a B.Sc. in Mathematics and Computer Science (cum laude) from Tel Aviv University.

Aviv Eyal 


The eagle of blockchain, Aviv divides his time between hovering way up in the sky, where he's got a perfect bird's eye view of the entire domain, and diving down to get his hands dirty. A successful serial entrepreneur and CTO (co-founder of Grouper Networks, a San Francisco based online video sharing platform acquired by Sony and rebranded Crackle.com), Aviv has forgotten more about building innovative online software platforms and p2p networks for individual and social empowerment than most ever learn. He's also a former VP Technology at Sony. Seriously, he's one of the actual grownups we have working here.


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