About Us:
One company, Four services... One MISSION.

John Krewson

Founder, President

John started Sketch in service to the mission of improving the ways people and teams work together. His past experiences as an agilist and professional actor are the primary sources of inspiration in leading this mission.

Calvin Horrell

VP, Operations

Calvin started his career as a developer, eventually transitioning to identifying and placing technical talent at clients. He now is responsible for finding and hiring talented people at Sketch who then help co-deliver solutions to our clients’ complex problems. He touches a lot of our activities here, from engagement logistics, hiring, contracts, and other client administrative activities.

Stephanie Greytak

VP, Business Development

Stephanie is a sales professional with 20+ years of experience working with clients of all sizes and industries. Her passion for Agile underscores her consultative approach for driving high-value interactions with clients. She embraces listening and learning while striving to bring the best solutions forward for our client’s toughest challenges.

John McArthur

VP, Strategy & Partnerships

John is an accomplished executive who combines a collaborative leadership style with deep market expertise and creative, strategic thinking to deliver positive business results. Possesses in-depth experience in providing complex solutions to major global automotive, financial services, hospitality, pharmaceutical companies, including negotiating with sophisticated procurement organizations. Experience leading complex multi-national organizations; restructuring and turning around underperforming businesses; setting the vision and engaging talent to bring that vision to life.

Jacob Kalagian

Business Development

Prior to his role at Sketch, where he leads our business development efforts (as the title implies), he spent five years at the non-profit LaunchCode where he helped facilitate the technical needs and training for the organization’s clients and stakeholders.  

Heather Tweedy

Engagement Manager

Ian Garrison

Lead Agile Coach

Ian used a near-decade background as a software developer as a springboard to becoming an Agile transformation lead and evangelist, which he did at Equifax for about five years. While he was there, he trained over 200 people for certifications as Scrum Masters, Product Owners, SAFe Change Agents, and helped implement practices for continued development that went far beyond scheduling more and more meetings. Since joining Sketch in 2018, he’s provided our clients with transformational coaching on how to improve speed to market, predictability for technology delivery, and more. He spends what little free time he has as a volunteer with the Agile Midwest conference. His greatest superpower is his strong belief in the productivity and power of a great team.

Matt House

Training Lead and Agile Coach

Matt is a recovering developer that still gets excited when hears the "Ribbit" of someone starting up Toad. After spending some time in the world of project management, Matt was convinced there had to be a better way to develop software. Once he attended his first agile boot camp he discovered that flowers smelled sweeter, food tasted better, and he was never going back to the oppression of Microsoft Project. As a full time Agile coach with Sketch, Matt helps organizations implement lean program management best practices and build environments that people actually want to work in. Matt’s nemesis is the schedule-industrial complex. His favorite things include: traveling with his wife and sons and falling off of skateboards.

Ryan Jensen

Cloud Enablement Developer

Ryan spent 10 years working at a prepaid card company, developing ordering and card balance platforms. At Sketch, he provides critical software development for our clients, and leads our managed service for cloud infrastructures. His many other hats include coaching, training (DevOps is his thing...among others), and consulting (trust us...if you need AWS advice, he’s your guy).

Mike Venneman

Development Practice Lead

Mike has been developing software - and helping others develop software - for the entire century. During his career he became concerned with the "business versus technology" phenomenon that exists in many companies, and joined Sketch's mission to help business and technology professionals work together as one team to create great software products. He enjoys being part of any software team as a developer, as well as coaching other developers and software teams through their challenges.