Our Story

Acrolinx helps the world’s greatest brands to create amazing content.

Built on an advanced linguistic analytics engine, Acrolinx is the only software platform that can actually “read” your content and guide writers to make it better. That’s why companies like Adobe, Boeing, Google, and Philips use Acrolinx to create content that’s more engaging, enjoyable, and impactful.

Meet The Team

Built on Science, yet Incredibly Human

We’re what happens when you mix together a bunch of computational linguists and ask them to solve tough language problems. Born out of the German Research Center for Artificial Intelligence, we’re passionate about language and technology.

We love language, we revel in its diversity, complexity and richness. Great language illuminates ideas, ignites imagination and delights the ear. Our software helps people create content that is more findable, readable and enjoyable – that’s our business.

Management Team

We love helping you speak with one voice.

Dr. Andrew Bredenkamp

Founder & CEO

Dr. Andrew Bredenkamp is founder and CEO of Acrolinx. Andrew has been solving content problems for the world’s biggest brands for over 25 years. Before starting Acrolinx, Andrew was Head of the Technology Transfer Centre at the German Research Center for Artificial Intelligence (DFKI) Language Technology Lab. Andrew holds degrees in languages and linguistics, and a PhD in Computational Linguistics. He is on the advisory board of a number of organizations, including Translators without Borders.

Ulrich Callmeier


As CTO and COO, Ulrich Callmeier leads all R&D, Engineering, and Product Management for Acrolinx. He has more than 15 years of experience designing and implementing advanced natural language processing systems and holds a master’s degree in Computer Science with a minor in Computational Linguistics from Saarland University. Prior to Acrolinx, Ulrich helped lead the development of a new natural language analysis component for customer self-service software provider YY Technologies in Mountain View, CA, and was also part of the research staff at Saarland University.

Charles Frydenborg

VP, Global Sales

For over 20 years Charles Frydenborg has been leading award-winning enterprise sales teams that have a passion for understanding customer challenges and solving tough business issues with technology. Prior to joining Acrolinx, Chuck built Rosetta Stone’s corporate sales division from the ground up into a thriving business and he served as VP of Sales at Gartner where his team led the company to business growth and client retention. When he’s not busy helping customers, Chuck serves on the Advisory Board of Best Buddies Virginia/ Capital Region, a nonprofit organization that provides advocacy for people with intellectual and developmental disabilities.

Melissa Caldwell

VP, Customer Success

With over 20 years of international sales and customer success experience, Melissa Caldwell represents a strategic voice of the customer perspective within Acrolinx. Prior to joining the company, Melissa spent the last 10 years growing the Client Services and Success teams at Rosetta Stone into a global organization renowned for an unparalleled quality of service in its industry and strong retention rates. A true customer advocate, Melissa brings a passion for ensuring a positive customer journey focused on maximizing the value Acrolinx provides as an organization.

Michael Eckermann

VP, Finance

Michael Eckermann brings over 20 years of global financial management experience across a wide range of industries from high-tech, to automotive and energy. Prior to joining Acrolinx, he served as CFO at a publishing software company, and as Finance Director for Fiat Group where he supported nineteen companies across nine countries. Michael holds a degree in Economics and has earned international degrees as Certified Financial Manager (CFM) and Certified Management Accountant (CMA).

Dr. Sabine Lehmann

Chief Linguist & Co-Founder

Sabine Lehmann has worked in language engineering for more than 15 years, initially at ISSCO in Geneva and the DFKI in Saarbrücken until 2002. Her expertise is in the development and evaluation of large-scale linguistic processing systems and their modification for specific applications. Sabine is also co-founder of Acrolinx.

Steve Rotter

Strategic Marketing Advisor

Author, blogger, speaker and digital marketing evangelist, for over 20 years Steve Rotter has been helping organizations drive marketing innovation with technology. Prior to joining Acrolinx, Steve held executive marketing positions with Brightcove, Adobe and Motorola and was co-founder and CMO of venture backed startup Q-Link Technologies (acquired by Adobe in 2004) and co-founder of Paradigm Research. Steve received his MBA from Northwestern University’s Kellogg Graduate School of Management and has volunteered on advisory boards for several non-profit organizations including World Vision and A Child’s Right.

Our Award Winning Software Platform

Acrolinx is proud to have some of the world’s most recognized brands as customers.