Collaboration is our superpower

At Ravus, our strength is our people - collaborating to transform challenges into opportunities and ideas into impact. Together, we turn bold visions into real-world solutions.

LEADERSHIP TEAM

DEREK

CHELSEA

MITCH

ELENA

DEREK

CHELSEA

MITCH

ELENA

Derek Magnusen

Co-Founder, Chief Executive Officer

Derek has spent the past two decades building and leading teams hyper-focused on delivering world class customer service and outcomes. Derek’s focus in his consulting career has been delivering successful Revenue Transformations, with a sharp focus on the Billing Domain. Having worked with many leading software companies in this space, Derek brings a well-rounded viewpoint on the market to Ravus’ clients.

Derek lives in Missoula, MT with his wife, two children, and their two dogs. When he is not working, you will likely find him standing in a river trying to fool a trout.

His experience includes:

  • Accredited implementation professional certified in Aria, Gotransverse, Billing Platform and Salesforce.
  • Led Global Revenue Management Team for Fortune 200 Consulting Firm

Chelsea Fickbohm

Co-Founder, Chief Revenue Officer

Chelsea’s experience bridges the gap between business and technical leadership. Fueled by a passion for problem-solving, she is dedicated to building dynamic teams and the delivery of scalable solutions to meet the ever-changing needs of Ravus’ clients and partners. A background in Project Management and Billing Solution Architecture provides the foundation for Chelsea's delivery viewpoint.

Chelsea and her family prioritize time on the river during Montana's warmer seasons and spend a good chunk of the winter on the local chairlifts.

Her experience includes:

  • 3x BillingPlatform presenter
  • 6x accredited implementation professional certified in BillingPlatform, Gotransverse, and Salesforce CPQ
  • MBA concentrated in Project Management

Mitch Colyer

Co-Founder, Chief Services Officer

Mitch’s career is grounded in quote-to-cash transformations and system implementation. From project inception through launch and beyond, he’s a practitioner, having served as a solution and enterprise architect across multiple tech stacks.

Mitch is a lifelong Montanan with a passion for the outdoors. He’s an avid hunter, fly-fisher, and trail runner. Mitch and his wife, Brooke, have two sons keeping them on their toes!

His experience includes:

  • 2x winner of Salesforce’s Partner Innovation Award.
  • 2x Dreamforce speaker
  • 1x Stripe Sessions Speaker
  • Accredited implementation professional in BillingPlatform, Stripe, Salesforce, Aria Systems, and Gotransverse

Elena Merrill

Co-Founder, Chief Operating Officer

For over 15 years, Elena has been dedicated to assisting individuals and organizations by leveraging technology to address and solve complex problems. Her expertise lies in enabling teams to work seamlessly together to drive exceptional customer outcomes, focused on the high tech, Transportation/ logistics and Communications industries. Elena has spent the better part of the last decade as an architect, curating solutions within Salesforce Revenue Cloud.

Elena is an avid horsewoman and Brazilian Jiu Jitsu practitioner. She and her husband, along with their two children, have what is turning into a hobby farm with two dogs, two horses and most recently, four goats.

Her experience includes:

  • 1x Dreamforce Speaker
  • 6x Accredited implementation professional in BillingPlatform, Stripe and Salesforce

PRINCIPAL CONSULTANTS

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Mary Langguth

Principal Consultant, Program Management Lead

Mary is a seasoned leader with over two decades of experience driving teams and programs to achieve measurable business outcomes across diverse industries. Renowned for her expertise in program management, business analysis, and process engineering, she excels in guiding projects from inception to successful completion and beyond.

Residing in Missoula, MT, Mary enjoys a vibrant family life with her husband and daughter. An outdoor enthusiast, she can often be found casting flies on the river, searching for her golf ball on a course, or exploring the mountains.

Certifications and Experience:

  • Master of Engineering Degree - Healthcare Systems Engineering
  • PMP (Project Management Professional) from the Project Management Institute
  • CSPO (Certified Scrum Product Owner) from the Scrum Alliance
  • PSM (Professional Scrum Master) from Scrum.org
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Jill Weimer

Principal Consultant, Revenue Management Architect

Jill is a quote-to-cash architect with a proven track record in leading large-scale, transformative projects. Over her career, she's worked with clients across many industries and has also performed various implementation roles. Committed to delivering exceptional results, Jill consistently prioritizes customer needs and project objectives, ensuring seamless alignment between technology and business outcomes.

Outside of work, you can find Jill running on one of Missoula's trails or out in the nearby mountain ranges hiking.

  • 6x accredited implementation professional in Salesforce, BillingPlatform, Stripe, and Logik.io


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Patrick Herrmann

Principal Consultant, Revenue Management Architect

Patrick combines his expertise as a CPA and technologist to drive quote-to-cash transformations and automate revenue operations. His deep understanding of finance, revenue recognition, and operational workflows allows him to design solutions that bridge the gap between accounting and technology, streamlining financial processes and enhancing operational efficiency.

Patrick lives in Bellingham, WA, with his wife and their newborn daughter. In the winter, he seeks out powder turns while ski touring in the North Cascades and BC Coast Mountains and teaches avalanche education. Summers are spent exploring the Salish Sea, mountain biking, and riding motorcycles.

Certifications and Experiences:

  • Certified Public Accountant
  • Accredited Implementation Professional in BillingPlatform
  • Salesforce Partner Innovation Award Winner
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Katie Marrett

Principal Consultant, Project Management

Katie’s a project manager at heart with 15 years of professional project management experience. She has worked in the technology, healthcare and advertising industries managing a wide spectrum of projects. At the end of the day applying the “unteachable” project management soft skills is what helps projects succeed. She offers a steady, unflappable presence in high-pressure moments, a meticulous attention to detail, ease in communicating with everyone, and the honesty and transparency that help partnerships thrive.

Katie lives in the Atlanta, GA area with her husband, two kids and dog. She’s an avid runner and now runs most of her miles pushing the running stroller.

Certifications and Experiences:

  • Small to enterprise-level quote-to-cash implementations
  • Project Management Professional (PMP) Certification
  • Masters of Business Administration
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Lulu Marshall

Principal Consultant, Revenue Management Architect

Lulu brings 15 years of experience in consulting, design, and architecture, with a specialized focus on Order to Cash. Having previously worked at industry leaders like Zuora and Salesforce, Lulu has developed deep expertise in billing and the subscription economy.  In her diverse career, she has held Solution Architect, Test Lead, Project Manager, and Python Web Developer roles.

Lulu’s unique combination of architecture, consulting, and technical expertise allows her to bridge the gap between customers, product owners, and engineering teams. Her ability to communicate complex ideas clearly has enabled her to drive value and lead successful projects in challenging environments.

Lulu lives in Denver, CO with her husband and new daughter.  She originates from London and, yes, you will often find her with a cup of tea in hand.  She loves skiing and hiking which is one of the main reasons for moving to Colorado.

Certifications and Experiences:

  • 2x BillingPlatform, Zuora, Salesforce Certified
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Evin Özer

Principal Consultant, Director of Engineering

Evin Özer is an engineering leader with over a decade of quote-to-cash expertise spanning full stack engineering, QA automation, software development, and data engineering. His hands-on engineering background allows him to solve problems from multiple perspectives; whether architecting robust integrations, building test frameworks, or delivering analytics that guide strategic business outcomes.

Evin lives in Missoula, MT with his wife and their two cats. When he's not in office, you may find him dining on fine cuisine, traveling to exotic locations, or spending time with family in Bozeman, Billings, and Helena.

Certifications and Experiences:

  • Bachelor's & Master's Degrees in Computer Science
  • 10+ years as a Full Stack Engineer, QA Automation Engineer, Software Engineer, and Data Engineer
  • Stripe Certified
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Stephanie Viereckl

Principal Consultant, Software Engineer

Stephanie is a technical leader who combines deep engineering expertise with strong communication skills, bridging the gap between business stakeholders and development teams. With extensive experience designing and building enterprise-scale solutions, she brings a unique mix of hands-on technical knowledge, problem solving, and the ability to align technology with business goals.

Based in Missoula, MT, Stephanie lives with her husband, two boys, and a dog. She loves being outdoors, often carrying a child or keeping them moving with the strategic use of gummy bears. Indoors, she channels her creativity into making cinnamon rolls and dinosaur costumes, sometimes simultaneously.

Certifications and Experiences:

  • 4x accredited implementation and development professional in Salesforce, Stripe and Logik.io

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William Devich

Principal Consultant, Revenue Management Architect

William is a quote-to-cash solution architect who has over a decade of experience leading large implementation teams, focusing on customer outcomes through strong communication and problem-solving skills. He brings a diverse skillset that includes experience through entire project lifecycles, where he leverages a strong understanding of revenue operation processes and strong technical acumen to deliver successful projects. He primarily leads projects as the solution architect, but his career has spanned across numerous implementation roles and technologies.
William lives in the greater Detroit, MI area with his wife and their three young children. In between chasing children around, he is often found spending time outdoors, reading, and getting another cup of coffee.

Certifications and Experiences:

  • 3x Salesforce Certified
  • 2x Conga Certified
  • Professional implementation experience in Salesforce CPQ, Billing, and B2B Commerce, as well as BillingPlatform, Conga and Aria Systems.
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Billy Marohn

Principal Consultant, Revenue Management Architect

Billy is an architect in revenue management with over a decade of experience leading successful cloud billing implementations across the United States, Canada, Europe, and Australia. Throughout his career, he has served in diverse roles including implementation consultant, business analyst, architect, and internal team leader, driving best practices and bringing a well-rounded perspective to every project.

Customer-focused and delivery-driven, Billy is passionate about helping organizations optimize their quote-to-cash processes and ensure their technology investments directly support business goals.

Outside of the office, Billy enjoys life in his home state of Montana. He makes the most of Missoula’s beautiful summers, and when the weather turns cold, he can often be found traveling the world in search of new adventures.

Certifications and Experiences:

  • Accredited implementation professional in BillingPlatform, Gotransverse, and Aria Systems.

Ready to get started?

Get in touch with our team.