Meet the Ravus Team: Quote-to-Cash, Billing, and Revenue Operations Experts
From strategy and vendor selection to implementation, integration, migration, and managed support, our team works across the revenue lifecycle to help clients build systems that are scalable, accurate, and ready for growth.
We partner with finance, RevOps, billing, and technology leaders who need more than platform knowledge alone. They need a team that understands how pricing, quoting, billing, integrations, invoicing, and downstream financial processes work together in the real world.
Our Team at a Glance
Ravus combines strategic advisory and hands-on delivery expertise across the systems, processes, and decisions that shape modern revenue operations.
- Deep expertise across quote-to-cash, billing, CPQ, integrations, migration, and revenue operations
- Cross-functional team of executives, principal consultants, architects, engineers, and program leaders
- Experience spanning advisory, implementation, launch, integration, migration, and managed services
- Practical support for finance, RevOps, billing, and IT stakeholders
- Familiarity with revenue technology ecosystems including BillingPlatform, Stripe, Salesforce, Nue, and related systems
- Grounded in real-world transformation work across complex B2B revenue environments
Why Clients Trust the Ravus Team
Ravus was built by experienced revenue transformation leaders who understand that quote-to-cash problems rarely live in one system or one department. The issues that slow growth usually span pricing strategy, quoting workflows, billing operations, integrations, finance controls, data quality, and team alignment.
That is why our team is intentionally multidisciplinary. Ravus combines executive advisory, solution architecture, implementation leadership, integration engineering, and program delivery to help clients move from uncertainty to operational clarity.
Whether the challenge is reducing billing complexity, modernizing revenue operations, launching a new pricing model, improving invoice accuracy, or preparing for platform change, our team helps clients connect business goals to practical execution.
Ravus Leadership Team
Our leadership team brings deep experience across billing transformation, quote-to-cash architecture, revenue operations strategy, and customer delivery. They help shape Ravus’s point of view, delivery standards, and long-term client outcomes.
Derek Magnusen
Co-Founder, Chief Executive OfficerDerek has spent more than two decades building and leading teams focused on customer outcomes, revenue transformation, and the billing domain. His experience across leading software ecosystems gives Ravus clients a practical, market-aware perspective on how to modernize revenue delivery with confidence.
Experience Highlights:
- Revenue transformation leadership
- Billing domain expertise
- Accredited implementation professional across multiple platforms
- Former leader of a global revenue management team
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.
Chelsea Fickbohm
Co-Founder, Chief Revenue OfficerChelsea brings a delivery perspective that bridges business leadership and technical execution. With a background in project management and billing solution architecture, she helps clients and partners design scalable solutions that support changing revenue needs and long-term growth.
Experience Highlights:
- Project and program leadership
- Billing solution architecture
- Multi-platform certifications
- Frequent industry presenter
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.
Mitch Colyer
Co-Founder, Chief Services OfficerMitch’s experience is grounded in quote-to-cash transformation, enterprise architecture, and implementation delivery. He works across the lifecycle of complex initiatives, helping teams move from concept to launch with stronger alignment between business requirements and technical execution.
Experience Highlights:
- Quote-to-cash architecture
- Large-scale implementation leadership
- Revenue systems transformation
- Speaker and award-winning partner innovation contributor
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!
Elena Merrill
Co-Founder, Chief Operating OfficerElena focuses on helping organizations solve complex problems through technology, operating alignment, and cross-functional execution. Her background includes architecture and delivery leadership across revenue-focused environments, including Salesforce Revenue Cloud and related business processes.
Experience Highlights:
- Revenue operations and architecture leadership
- Cross-functional team enablement
- Salesforce Revenue Cloud expertise
- Delivery and operating model alignment
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.
Principal Consultants and Practice Leaders
Ravus principal consultants bring hands-on experience across program management, revenue architecture, software engineering, data migration, and platform delivery. They help clients solve operational problems that touch multiple functions and multiple systems at once.
Mary Langguth
Principal Consultant, Program Management LeadMary 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.
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
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.
Jill Weimer
Principal Consultant, Revenue Management ArchitectJill 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.
Certifications and Experience:
- 6x accredited implementation professional in Salesforce, BillingPlatform, Stripe, and Logik.io
Outside of work, you can find Jill running on one of Missoula's trails or out in the nearby mountain ranges hiking.
Patrick Herrmann
Principal Consultant, Revenue Management ArchitectPatrick 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.
Certifications and Experience:
- Certified Public Accountant
- Accredited Implementation Professional in BillingPlatform
- Salesforce Partner Innovation Award Winner
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.
Katie Marrett
Project ManagementKatie’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.
Certifications and Experience:
- Small to enterprise-level quote-to-cash implementations
- Project Management Professional (PMP) Certification
- Masters of Business Administration
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.
Lulu Marshall
Principal Consultant, Revenue Management ArchitectLulu 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.
Certifications and Experience:
- 2x BillingPlatform, Zuora, Salesforce Certified
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.
Evin Özer
Principal Consultant, Director of EngineeringEvin 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.
Certifications and Experience:
- 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
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.
Stephanie Viereckl
Principal Consultant, Software EngineerStephanie 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.
Certifications and Experience:
- 4x accredited implementation and development professional in Salesforce, Stripe and Logik.io
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.
William Devich
Principal Consultant, Revenue Management ArchitectWilliam 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.
Certifications and Experience:
- 3x Salesforce Certified
- 2x Conga Certified
- Professional implementation experience in Salesforce CPQ, Billing, and B2B Commerce, as well as BillingPlatform, Conga and Aria Systems
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.
Billy Marohn
Principal Consultant, Revenue Management ArchitectBilly 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.
Certifications and Experience:
- Accredited implementation professional in BillingPlatform, Gotransverse, and Aria Systems.
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.
Ashley Bailey
Principal Consultant, Salesforce Platform & Revenue Management ArchitectAshley brings a decade of Salesforce consulting experience as a functional architect to Ravus. Her expertise ranges across Lead to Cash, helping customers discover new ways to delight their own customers through digital transformation.
Certifications and Experience:
- Bachelors in International Business
- 8x Salesforce Certified
- PSM (Professional Scrum Master) from Scrum.org
Ashley lives with her husband, three children and two dogs in the heart of Houston, TX. She is a year-round crafter, turning used clothing and recycled wine bottles into new treasures.
Ryan Miller
Principal Consultant, Software EngineerRyan is a Senior Engineer with over six years of experience delivering CPQ and billing solutions across complex enterprise environments. With a strong engineering foundation, he specializes in quote-to-cash data migration discovery, design, and implementation, helping organizations modernize legacy systems into scalable, reliable revenue platforms.
Certifications and Experience:
- Salesforce, BillingPlatform, and Nue certified professional
- Data Engineering specializing in Revenue Management CPQ and billing migrations
- Bachelor’s degree in Business Management Information Systems from the University of Montana
Ryan is a U.S. Marine Corps veteran and lives with his wife, son, three cats, and their dog. When he’s not working, he enjoys spending time with his family.
Erin Curley
Principal Consultant, Project ManagementErin is a Principal Consultant with 15 years of professional project and program management experience. Erin started her career in Production Operations, focusing largely on infrastructure, compliance and release management projects, including a multi-year project to implement a zero-downtime continuous software release process. Her focus for the last 10+ years has been on the Professional Services side, primarily focused on CPQ & Billing Implementations. Outside of her technical experience, Erin is known for her ability to connect with and understand what drives the people around her. Her clients and project team members alike benefit from this tremendously, from unpacking the business needs behind a project to motivating the team when challenges arise.
Certifications and Experience:
- Master Certificate IS/IT Project Management from Villanova University
- 15+ years Release Management Experience
- 10+ years implementing Salesforce, Gotransverse and Aria systems
Erin lives in the Philadelphia suburbs (Go Birds!) with her husband, three kids and their pup. Erin loves to sing, but also plays the guitar and piano. When she's not at her desk or chauffeuring the kids around, she enjoys writing new tunes.
What Our Team Helps Clients Do
The Ravus team supports organizations across the full revenue transformation lifecycle. Explore related services and solution areas below.Clarify the right path before transformation
Implement and launch with greater confidence
Integrate systems and migrate data safely
Support evolving revenue operations after go-live
Learn How the Ravus Team Thinks
The Ravus team regularly publishes insights on billing transformation, CPQ, revenue operations, vendor selection, integrations, pricing models, and implementation readiness. Explore our latest thinking to see how we approach revenue-critical decisions in practice.

Why Ravus’ Montana Roots Are a Differentiator in Quote-to-Cash Consulting

Large-Scale Subscription Billing Migration for a Global SaaS Company

Real-Time Quote-to-Revenue without Middleware: Why It Matters

Why Ravus’ Premier Partnership with BillingPlatform Matters

Vendor Selection Without the “Demo Theater”: A Better Way to Evaluate Revenue-Critical Systems

Don’t Miss the Guide – What a Common Angler’s Error Can Teach Us About Q2C Initiatives

Billing Software Trends 2026: The Modern Monetization Stack

CPQ Implementation Success Starts Before You Select a Vendor
FAQs About Ravus
These are the questions leaders ask when a billing migration is moving toward cutover but confidence in the output is still not high enough.
Yes. Ravus supports clients across advisory, implementation, integration, migration, product enablement, and managed services, helping teams move from planning to delivery and ongoing optimization.




















