Developing great software requires great teamwork. Our team has been together for decades.

The Merlin Team

The Merlin Team has been working together for decades. Our clients are legal professionals who work under tight, high-stakes deadlines, with the need to get it right every time. We love a challenge and are accustomed to solving difficult problems. We are not afraid of the long hours that come with the territory. Indeed, it is what gets us up in the morning. 


Meet the senior leadership team at Merlin Search Technologies. 

Founder and CEO

John Tredennick

John Tredennick spent the first 20 years of his professional life as a trial lawyer and partner at a national law firm. He then founded Catalyst Repository Systems, a leading e-discovery and AI software provider where he served as CEO and Chair for the next 20 years. The company was recently sold to a large public technology company.

 Not ready to retire, John formed Merlin Search Technologies, a secure cloud software development company, that helps forward-thinking legal teams meet compliance obligations, review documents and automate complex work processes. 

John is a prolific speaker and writer. Over the past 30 years, he has written eight books and countless articles on legal technology topics, including “TAR for Smart People” (3rd Ed.),  two ABA bestsellers “Winning with Computers” (Vols. One and Two), “How to Prepare For, Take and Use a Deposition at Trial (James Publishing), and several editions of “The Lawyer’s Guide to Spreadsheets.” John has served as a Chair of the ABA’s Law Practice Management Section and Editor in Chief of its flagship magazine. John is currently active with the Sedona Conference as co-drafting team leader for the new Sedona Guidelines on Legal Holds and as a member of the drafting team for the International Legal Hold Primer. 

John’s legal and technology acumen has earned him numerous awards, including being named one of the top six “E-Discovery Trailblazers,” by the American Lawyer, recognized as a legal visionary to the FastCase 50 and named one of the “Top 100 Global Technology Leaders” by London CityTech magazine. John was also recognized as the Ernst & Young Entrepreneur of the Year for Technology in the Rocky Mountain Region and Top Technology Entrepreneur by the Colorado Software and Internet Association. 

Contact Number:303-810-1918

Vice President of Software Development

Maheshwaran Muthu

Maheshwaran Muthu is the Vice President of Software Development for Merlin Search Technologies, responsible for leading all software development activities across the organization. He has a Bachelors in Computer Science from PSG College Of Technology, adding a Masters in Computer Science in 2000. For several years he served as Director of Technology Services at Marlabs, Inc., a leading international software development and outsourcing company.

In 2004 Mahesh joined the Catalyst Repository Systems team where he led the Indian development team that helped design and build Catalyst’s award-winning search platforms. In 2019, after Catalyst was acquired, Mahesh took the role as a senior developer for OpenText.

Mahesh brings his experience as an e-discovery veteran who has spent close to two decades in building award winning innovative products from concept to delivery. He currently leads a team of over 16 technology professionals at Merlin. 

Chief Financial Officer

Lew Visscher

Lewis Visscher has over 30 years of diversified business advisory, management, operational, financial, and accounting experience. Lew most recently served as the CFO at Catalyst Repository Systems, which was acquired by Open Text in early 2019. Prior to Catalyst, Lew was CFO for various early-stage technology businesses providing financial leadership through many operational aspects, contract negotiations, and merger and acquisition strategies.

Prior to serving as CFO, Lew was with PricewaterhouseCoopers where he worked with many private and public companies on equity offerings, start-ups, acquisitions, divestitures and multinational, multi-location operations.

Lew is most famously known in the Colorado community for Lew’s List (, a job resource board for finance and accounting professionals. Lew is also involved in Financial Executives International (FEI) in both Colorado and Arizona and served as President of the Colorado chapter in 2015. Lew is also the founder and an active member of the Colorado chapter of the New Canaan Society, a Christian men’s organization. In 2009, Lew was honored as CFO of the Year by the Denver Business Journal.

Chief Data Scientist

Dr. William Webber

Dr. William Webber completed his PhD in Measurement in Information Retrieval Evaluation at the University of Melbourne under Professors Alistair Moffat and Justin Zobel, and his post-doctoral research at the E-Discovery Lab of the University of Maryland under Professor Doug Oard. 

With over 30 peer-reviewed scientific publications in the areas of information retrieval, statistical evaluation, and machine learning, he is a world expert in AI and statistical measurement for information retrieval and e-discovery.  He has almost a decade of industrial experience as a consulting data scientist to e-discovery software vendors, service providers, and law firms. 

Prior to his research career, he was an experienced software engineer and developer of research information retrieval systems, culminating in a Masters by Research on architecting and developing high-throughput distributed indexing and retrieval systems for large volumes of textual data.

Vice President Operations

Kathy Hogy

Kathy Hogy has been in the legal industry for over 40 years, focusing on Legal Operations, Support and Technology. She spent the first 20 years of her career as a Senior Paralegal specializing in e-discovery, client support and legal technology at a national law firm. From there, Kathy moved into the role of Vice President of Legal Operations for First Data Corporation which later became Fiserv, a Fortune 200 FinTech Company. She spent 16 years in her role at Fiserv, managing a team of eighteen legal professionals.

Kathy joins Merlin Search Technologies as Vice President of Operations. At Merlin she will help manage all aspects of Merlin’s business and financial operations while leading Merlin’s Support and Client Services Teams. She will also consult with legal departments and law firms on various legal operations issues, focusing on helping legal departments become more efficient and effective in their use of technology. 

Kathy brings to Merlin a broad understanding of client requests and user needs.  She has been responsible for legal operations and people management for decades, including vendor management.  This unique perspective will allow her to move seamlessly into supporting the needs of Merlin as a Company and each client we have the opportunity to work with. 

Vice President Sales & Consulting

John Pappas

Lawyer and experienced e-discovery consultant John Pappas was the Midwest Director of Sales for OpenText and before that spent several years as a Director of Sales for Catalyst Repository Systems. Before joining Catalyst, John was a litigator and trial attorney, specializing in commercial litigation, products liability and warranty litigation, construction litigation, insurance casualty and coverage litigation, and all aspects of e-discovery including data collection, processing, and advanced search and analytics.

Drawing from eighteen years in the practice of law, John advises clients on e-discovery strategies, admissibility of electronic evidence, along with best-practices for understanding and reducing data volumes to ultimately lower discovery costs.

John is a member of the EDRM Global Advisory Council, a co-chair on the Seventh Circuit eDiscovery Pilot Program, a member of WG 1 of the Sedona Conference, and President of the ACEDS Chicago Chapter. He has presented at continuing legal education seminars across the Midwest on e-discovery and technology-assisted review topics. He received a J.D. from the John Marshall Law School and a B.A. from Michigan State University. He is admitted to practice in Illinois.

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