Bringing the Invisible to Life

Creativity is combinatorial – it builds on existing ideas to evolve something altogether new. 645 Ventures has attracted individuals with expert backgrounds into a team that clearly  sees the invisible promise of each outstanding founder – and then works tirelessly to make it reality.


Co-founder & Managing Director

Nnamdi Okike is a venture capitalist with a track record of investing in leading software and Internet companies. Nnamdi is driven by a desire to help entrepreneurs build industry-leading companies by balancing entrepreneurial vision and creativity with strong business fundamentals and rigorous preparation.

Nnamdi is Co-Founder and Managing Partner of 645 Ventures, a seed-stage firm that applies an institutional model to investing in early-stage companies, leveraging advanced proprietary software. He oversees the firm’s investment strategy and has invested in companies such as ALICE (acquired by Expedia), MM.LaFleur, Overtime, and LeagueApps.

Nnamdi previously spent eight years at Insight Venture Partners, a $13 billion venture fund, where he invested in eighteen companies and had nine exits, with exit value exceeding $5 billion. Exits included Mimecast (IPO; $1B+ market cap), Despegar (IPO, $2B market cap), Privalia (acquired for 500 million Euros), Folhamatic (acquired for $300 million), Photobox (acquired for 400 million GBP), Hitwise (acquired for $240 million), DivX Networks (IPO), and Astaro (acquired by Sophos).

Nnamdi received his BA, JD, and MBA, all with honors from Harvard University. He serves on the Board of the New York Roadrunners, and is a member of the Chairman’s Circle at Jazz at Lincoln Center.


Co-founder & Managing Director

Aaron combines several years of deep technology expertise, having developed advanced equity trading software and derivative systems at Goldman Sachs and GFI Group, with operational experience working with early stage founders and CEOs to build high growth companies. As the first Managing Entrepreneurial Officer at Cornell Tech, he has been instrumental in pioneering the campus’ startup and Studio Culture and shepherding deep technology startups toward commercial success. Aaron built his venture investment experience working directly with the Managing Directors at Gotham Ventures and has been mentored by some of the world’s leading venture capital investors.

As a founding partner of 645 Ventures, Aaron teamed up with Nnamdi Okike to build a premier venture capital firm that is instrumental in moving seed stage founders to competitive Series A rounds and beyond. He notably led 645 Ventures investments in FLY Labs (acquired by Google), Source3 (acquired by Facebook), Nanit, Goldbely, FiscalNote, and several others.

Aaron received a BS in Computer Science (Cum Laude Honors) from Morehouse College and an MBA from Cornell University.


Vice President & Head of Story

Dessy Levinson is a story expert, investor, and creative director who balances reason and creativity to make investment decisions that are driven by both metrics and vision. She is passionate about nascent technology and digitally-native consumer brands, leveraging her advertising and entrepreneurial background to assess companies in those verticals.
Dessy spent fifteen years as a creative director, acquiring a deep understanding of the digital consumer mindset while leading marketing initiatives for Colgate Palmolive, Gerber, Century 21, Mall of America, and A&E, as well as for grass-roots viral campaigns in entertainment. She now deploys her experience to assist portfolio companies by creating strategic narratives that empower fundraising, customer acquisition, and hiring. She currently serves on the advisory boards of the Women in XR fund and MAP Labs, and is a mentor at ERA, TechStars, Combine Accelerator, The French-American CreativeLab, and Cornell Tech’s Startup Studio.

Dessy received her BA and MA from the University of Alberta. Her academic specialization combined Creative Writing, Critical Theory, and Psychology.


CTO in Residence

As a veritable triple threat – software engineer, entrepreneur, and classically-trained musician – Blake clearly thinks out of the box. He balances structure and innovation, enhancing both with top-tier engineering skills. As 645 Ventures’ Engineer in Residence, Blake helped build the software wing of 645 Voyager and currently leads our engineering team as they enhance its algorithmic capabilities.

Blake is also an engineering director at DuckDuckGo and a co-founder of Instinct. He has worked with dozens of startups to build the first version of their products, most recently for DipJar. His technical acumen is enhanced by having worked extensively on the business side of tech startups, serving as Head of Marketing for TicketLeap and as CEO for the companies he founded.

Blake received a B.A. in Social Studies and Mathematics from Harvard University, where he graduated Magna Cum Laude and Phi Beta Kappa.



Linda loves deep tech and knows it well. With a strong interest in blockchain, enterprise infrastructure, security, data-driven applications and IoT, she is a tireless student of early-stage technologies and an advocate for their long-term transformational potential.

Linda’s previous roles as a Research Analyst at ChinaRock Capital and an early-stage VC at Flatiron Investors have taught her attention to detail and a tenacious curiosity.

She received a BBA (Hon) in Finance & Actuarial Science from The Chinese University of Hong Kong and an MBA from Columbia University.



Max has equal parts tenacity and exuberance. Propelled by a childhood passion for consumer technology, Max seeks out the latest in disruptive advancements and has tremendous respect for the tirelessness of entrepreneurs.
As part of the diligence team at 645 Ventures, Max sources and investigates new deals and partners with existing portfolio companies to provide research support. Whether it is a new consumer app or enterprise software with powerful features, Max is passionate to learn about new technologies and their potential. Max held support positions at multiple startups as well as on the investment team at Ben Franklin Technology Partners (investments include RJ Metrics, Zonoff, and Monetate).
He holds a degree in Science, Technology, and Society from the University of Pennsylvania.


Engineer in Residence

David is inquisitive, driven, and deeply enthusiastic about a diverse range of subjects – from product-building to basketball to machine learning. He is an Engineering Fellow at 645 Ventures where he works on enhancing the deal intelligence portion of the 645 Voyager platform.

David has previously worked on the Integrations team at Moat, a NY-based ad analytics startup, and Oliver Wyman, as a management consultant in their Financial Services practice.

David received his B.S. in Economics and B.A. in Asian and Middle Eastern Studies from Duke University, and is a graduate of the Fullstack Academy coding immersive.



Alessio deploys sharp engineering acumen and a strong sense of usability design to build software solutions that are both functional and delightful. As an Engineering Fellow at 645 Ventures, Alessio continues to evolve our Voyager platform, working closely with the firm’s diligence team to enhance functionality and improve algorithmic accuracy.

Alessio’s previous experience as Lead Engineer, Founder, and Head of Graphics enable him to continuously optimize our product roadmap, accomplishing fluid deployments that guide workflow and improve efficiency.

He is passionate about supporting female founders and engineers around the world and has volunteered at TechGirlz, as well as currently serving on the mentoring team at Blooming Founders.

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