Meet the Team

Gordon Tibbitts

General Manager

Jonathan Hevenstone

Senior Vice President of Business Development

Hisham Shahtout

Senior Vice President, Engineering


Sarah Garfunkel

Director of Digital Marketing

Sarah has over a decade of experience in marketing for STM publishers, with a focus on marketing strategy and campaign executions for journals and researcher-centric tools and services. Prior to joining Atypon in 2020, she held a number of marketing leadership roles at Wiley, most recently as Associate Director, Partner Enablement. Sarah holds a BA in International Political Economy from the University of Puget Sound in Washington.

Doreen Hall

Director of Program Management

Since joining the Atypon team 7 years ago as a project manager, Doreen has brought her skills in customer relationship building and team leadership to working with our largest and most complex customers, including the American Chemical Society and Wiley. As Director of Program Management, she now oversees the management of Atypon’s most active clients with dedicated Atypon development resources. Prior to joining Atypon, Doreen held product management, partner relationsand project management roles in online publishing platform services at the American Institute of Physics, having previously worked in finance and banking as a business analyst. She holds a BS in chemistry and business from the University of Scranton, Pennsylvania.

Patrick Hargitt

Senior Product Management Director

Patrick joined Atypon in 2015 and is now leading Literatum Product Management.
In addition to his product leadership skills, he has brought to Atypon more than 20 years’ experience in software engineering, building scalable platforms, and managing engineering groups. Patrick began his career in product development at American Management Systems, then moved to Greece to become the CTO of Upstream, a startup connecting mobile users with telecom operators, media, and marketeers.
He has also led engineering and product development at technology companies with projects such as Blackberry’s messenger ad platform and VAS solutions deployed by telecom companies around the world. Patrick has a Bachelor of Arts in computer science and physics from Hamilton College, New York.

Sylvia Izzo Hunter

Community Manager

Sylvia joined the marketing team at Atypon as Community Manager in 2021. She has also been Marketing Manager at Inera since 2018, responsible for content marketing and social media. Prior to shifting to marketing, Sylvia worked for 20 years in editorial, production, and digital publishing at University of Toronto Press. She served on the SSP Board of Directors from 2015 to 2018 and is a current member of SSP’s Diversity, Equity & Inclusion Committee and Education Committee. Sylvia holds a BA (Hons) in English Literature & French Studies from York University in Toronto.

Himanshu Jhamb

Vice President, Strategic Accounts

Leveraging his vast experience in managing technology project teams across multiple industries, Himanshu ensures smooth service provision to some of Atypon’s largest clients. He joined Atypon in 2008 as a senior project manager after working in project management at Macrovision and holding various technical and engineering positions at eMeta, CapGemini/Ernst & Young, Verizon, and Tata. In his current role as the voice of Atypon’s customers, Himanshu ensures smooth service provision to some of the company’s largest clients. He holds a bachelor of engineering degree in computer science from the University of Mumbai and is the coauthor of a book on project management#Project Management Tweet.

Nikos Markantonatos

Director of Engineering, Greece Operations Head

Nikos has been with Atypon since its very early days and has played an instrumental role in the company’s growth. With more than 20 years’ experience in SGML/XML technologies, Nikos oversees Atypon’s Content Migration team. He has served on the NISO JATS DTD Standardization Committee, the Book Interchange Tag Suite (BITS) Committee, and the NISO Standards Tag Suite (STS) Committee. He is also a member of the JATS4R (JATS for Reuse) initiative. Nikos holds a BS in mathematics from the University of Thessaloniki, and as Fulbright scholar earned an MS and a PhD in computer science from New York University.

Michael Markey

Vice President of Security and Governance

With more than 20 years’ experience in project management, software development, and engineering, Mike joined Atypon in 2010 to oversee the company’s Project Management Office. Mike later assumed the role of chief client advocate, working closely with customers to understand their business goals and ensure their technology needs are being met. Previously, Mike was the director of professional services with Macrovision, whose eMeta division was acquired by Atypon in 2008. He has held various software engineering positions at Standard & Poor’s as well as at Lockheed Martin and other military contractors. He earned a BS in electrical engineering from Penn State University.

Nash Pal

Director of Client Management

Nash joined Atypon in 2006 as a strategic marketing manager, with program management responsibilities for Atypon’s largest projects. He now handles project and client relationship management for European clients and also heads up Atypon’s UK office. Before working in scholarly publishing, Nash was employed as a software engineer, product manager, QA manager, and software management team leader. He worked with some of the world’s largest publishers, including Oxford and Cambridge University presses and Blackwell, where he was the product manager for the company’s online journals platform. He also helped launch Blackwell’s Online Bookshop. Nash holds a degree in computer engineering from the University of Manchester.

Dino Paravandis

Vice President of User Experience

Dino, a digital innovation and design strategist with 15 years’ experience advising organizations on the value of design-led innovation, has created hundreds of integrated, multi-channel campaigns. Before coming to Atypon, he led Rocketgraph, a startup focusing on data visualization of cloud services for visual storytelling. Dino was also responsible for creative and client initiatives at Cambo, a digital agency where he developed award-winning work for Kellogg’s, Starwood, Domino’s, and L’Oréal. He was also client services director at Upstream Systems and a usability specialist at GTE Laboratories (now Verizon). Dino has a BS in computer science and an MS in human-computer interaction from DePaul University

Rob Posadas

Vice President of Solution Architecture

Rob has been with Atypon since 2015, working with the MIT Press, the American Meteorological Society, and SAGE Publications. Prior to joining Atypon, Rob was CTO of AutorepairConnect and director of engineering at Findlaw—both web platform companies. He also led the Java 3D team at Sun Microsystems for eight years. Rob holds a BS in computer science from the University of California at Berkeley.

Megan Prosser

Senior Director of Marketing

Megan has worked in marketing management in both the corporate and not-for-profit worlds, building marketing teams and strategies for high-tech startups, publishing, and arts organizations. Prior to joining Atypon in 2015 as the company’s first marketing director, Megan was the vice president of marketing at Aptara, a publishing services company, where the marketing department she built and corporate rebranding she led contributed to the company’s growth and sale. Megan holds a BA from the University of Mary Washington and an MBA from George Washington University.

Bruce Rosenblum

NISO Fellow & Vice President of Content and Workflow Solutions

Bruce has been designing and implementing electronic publishing workflows and solutions for over 35 years. He is the developer of the Crossref Metadata Deposit Schema and co-authored the original NLM DTD. He served on the National Information Standards Organization (NISO) Board of Directors from 2005 to 2013 and is currently co-chair of the NISO STS working group as well as an active member of its JATS and BITS working groups. Prior to joining Atypon, he was CEO of Inera, which was acquired by Atypon in 2019. His 16 years of joint work with Crossref earned Inera and Crossref the 2014 NEPCo Publishing Collaboration Award, and he was awarded the status of NISO Fellow in 2020. Bruce continues to lead software development for Inera’s eXtyles and Edifix, and works with Atypon customers on workflow solutions. 

Subject Matter Experts

Nikos Nanas

Product Manager
Artificial intelligence and personalized discovery

Nikos studied civil engineering at Aristotle University of Thessaloniki, then pursued his interest in artificial intelligence, earning an MS in intelligent systems from the University of Sussex and a PhD from Britain’s Knowledge Media Institute (KMi). In 2006, he became a researcher at the Institute for Research and Technology of Thessaly and also taught artificial intelligence, web technologies, and digital entrepreneurship at the University of Thessaly. His research has focused on the application of biologically inspired computing to the problem of personalizing information. In 2011, he founded Noowit, whose software created intelligent newspapers and magazines that adapt to the interests of individual readers. Atypon acquired Noowit in 2017, when Nikos joined the staff.

Christos Nikolakakos

Product Manager

Christos, who oversees the development of the Atypon eReader, has over 15 years of international experience in Greece, France, the UK, and China working on key enterprise and consumer products and has led product development teams in the education, defense, telecommunications, and entertainment markets. He is a data-driven product manager, with a focus on continuous innovation and experience in establishing and executing mobile-first product strategies. Christos began his career as a software engineer, earning his bachelor’s degree from the National Technical University of Athens. He also holds an MsC in digital signal processing applications in communication systems from Lancaster University.

Alberto Pepe

Senior Director
Strategy & Innovation

Alberto oversees the development of Atypon’s open science tools and initiatives. Until 2017, he was CEO and founder of Authorea, a collaborative authoring tool for researchers. Alberto holds degrees in astrophysics and information and computer science from Harvard University, UCLA, and University College London. His dissertation, on scientific collaboration networks, received an award from the American Society for Information Science and Technology. At the Information Technology Department of CERN, in Geneva, Alberto worked on data repository software and promoted open access among particle physicists.

Matias Piipari

Senior Product Director
Collaborative research and authoring tools

Matias has a decade of experience building software that facilitates scholarly research. The creator of the Manuscripts authoring tool, he joined Atypon in 2017. Before that, he was the CTO of, the creator of Papers, a reference manager for academic authors. Matias co-founded a mobile software development company while a student at the University of Cambridge, from which he holds a PhD in computational biology. He also worked as a programmer in a UCL-based research group while a student at Imperial College London, where he received a BS in biochemistry. He has published widely in the fields of machine learning and bioinformatics.

Hong Zhou

Director of Product Management
Artificial Intelligence

Hong oversees Atypon’s R&D on and implementation of artificial intelligence–driven information discovery technologies. Previously, he was the CTO of Digital Fineprint, a startup that leveraged machine learning algorithms for the insurance industry. Prior to that he was a senior software engineer and development manager at Schlumberger and spent a year designing race-car games at Eutechnyx. He holds an MS in electronic and electrical engineering and computer science from the University of Sheffield, a PhD in 3D modeling with artificial intelligence algorithms from Aberystwyth University, an MBA in digital marketing and strategy from Oxford, and a certification in machine learning from Stanford. He has published widely on computer science.

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