Boulder, Colorado

Fractional marketing leadership
for growing organizations

We support mission-driven companies, nonprofit organizations, and membership associations ready to take their marketing to the next level.

Let's Talk
20+
Years of marketing leadership experience
10+
Years of hands-on experience with Marketo and Salesforce
9
Company integrations managed across brands, products, and customers
What We Do

When your business needs experienced marketing leadership—but not necessarily a full-time executive—Sieper Marketing provides the strategic guidance, operational expertise, and hands-on support to help you reach your growth goals.

We partner with organizations that need an experienced marketing leader to build strategy, align teams, optimize performance, and drive measurable results. Whether you're launching a new initiative, scaling demand generation, or building a marketing function from the ground up, we help turn marketing into a growth engine for your business.

Services
01

Marketing Strategy & Go-to-Market Planning

A strong marketing strategy creates clarity, alignment, and momentum across your organization. We develop practical, actionable plans that support business objectives and drive sustainable customer engagement.

  • Marketing assessments and growth planning
  • Go-to-market strategy development
  • Product and service launch planning
  • Annual marketing planning and budgeting
  • Customer and member engagement strategies
  • Executive and stakeholder alignment

With more than two decades of marketing leadership, I have partnered with business leaders across multiple functions to create marketing programs that support revenue growth and organizational goals.

02

Demand Generation & Revenue Marketing

Modern marketing should create measurable business impact. We design and optimize programs that attract qualified prospects, nurture relationships, and support sales teams throughout the buyer journey.

  • Demand generation strategy
  • Lead generation and nurturing programs
  • Campaign planning and execution
  • Content-driven lead acquisition
  • Email marketing and marketing automation
  • Funnel analysis and conversion optimization
  • Lead scoring and sales handoff processes

I have led inbound and outbound demand generation programs, developed scalable lead nurturing systems, and built campaigns that drive awareness, engagement, and conversions with strong marketing-sales alignment.

03

Marketing Operations & Performance Optimization

Strong marketing operations create the foundation for growth. We help organizations improve processes, technology, reporting, and measurement so teams can operate more efficiently and demonstrate business value.

  • Marketing automation strategy
  • CRM and marketing technology optimization
  • Campaign processes and workflows
  • Database management and segmentation
  • Reporting, dashboards, and KPI development
  • Marketing performance analysis

Drawing on experience with Marketo, Salesforce, Zoominfo, 6sense, and other platforms, I help organizations build scalable systems that improve visibility, efficiency, and results.

04

Team Leadership & Organizational Development

Growing companies often need experienced leadership before they're ready to hire a full-time marketing executive. We provide coaching, direction, and accountability while establishing processes for long-term success.

  • Fractional marketing leadership
  • Interim marketing management
  • Team structure and role design
  • Leadership coaching and mentorship
  • Agency and vendor management
  • Cross-functional collaboration and alignment

I have built and led high-performing marketing teams, fostering cultures focused on accountability, collaboration, and continuous improvement—while maintaining exceptional employee retention.

05

Events, Thought Leadership & Customer Engagement

Events and thought leadership remain powerful tools for building relationships and strengthening brand credibility. We help create programs that engage customers, showcase expertise, and support revenue objectives.

  • Event strategy and planning
  • Webinar and virtual event programs
  • Sponsorship and partnership development
  • Thought leadership programs
  • Customer and member engagement initiatives
  • Community-building strategies

I have led teams responsible for hundreds of virtual and in-person events annually, consistently achieving engagement and revenue goals while elevating brand visibility and industry influence.

06

AI Strategy & Marketing Productivity

AI is changing how marketing teams create content, engage customers, and operate at scale. We help organizations develop practical approaches to AI that improve productivity, streamline workflows, and enhance marketing effectiveness without losing the strategic thinking that drives results.

  • Content repurposing strategies to maximize the value of existing assets
  • AI-powered brainstorming and content ideation
  • Marketing workflow automation and process optimization
  • AI best practices, governance, and team enablement
  • Evaluation and selection of AI tools and platforms
  • Training and coaching for marketing teams adopting AI

I have hands-on experience using leading AI platforms, including ChatGPT, Claude, Claude Code, and Microsoft Copilot to support content development, research, content repurposing, idea generation, process improvement, and marketing productivity.

About

Meet
Sannie
Sieper

Sannie Sieper

I'm a marketing leader with more than 20 years of experience helping organizations grow through strategic marketing, demand generation, customer engagement, and team leadership.

Most recently, I served as Director of Demand Generation and Marketing Operations and previously Director of Marketing at E Source, where I led marketing initiatives that contributed to significant year-over-year growth and achieved subscription renewal rates exceeding 90%.

Prior to E Source, I co-founded Fashion Forward Maternity, an online maternity apparel startup that was successfully acquired in 2013. My career also includes leadership roles in publishing, technology, and research-driven organizations.

Known for my collaborative leadership style and ability to balance strategy with execution, I partner closely with clients to build practical solutions that drive meaningful business outcomes.

Who We Work With

Small and mid-sized businesses seeking experienced marketing leadership
Organizations with lean marketing teams that need strategic support
Companies preparing for growth, launches, or organizational change
Businesses looking to improve marketing performance and accountability
Teams that need temporary or interim marketing leadership
Testimonials
“

Sannie is a resourceful, knowledgeable, and well-rounded marketing professional. She rarely needs supervision and has good judgement. She has a good understanding of social media and how to maximize our limited presence there. She is a strong team member and I would hire her again (in fact, this is already the second time I have hired her).

— Wayne Greenberg
“

Sannie is a superstar marketer and leader. She has the rare ability to think strategically and also execute plans flawlessly. I was incredibly lucky to work with her for almost 10 years at E Source. During that time, she transitioned the marketing, communications, and customer engagement model as we tripled our size. She grew and mentored a group of marketing operation specialists, added contractor and agency resources to scale the team, revitalized our brand in the marketplace, and worked tirelessly to increase pipeline for the sales teams.

Additionally, she was able to juggle the integration of nine companies—bringing their products, brands, and customers into our fold. Sannie’s efforts have had a direct and substantial impact on revenue. She holds herself to the highest standard of performance while being a dynamic and low ego partner to all the stakeholders across the business.

— Kym Summers
“

I had the pleasure of working with Sannie for over 7 years. During that time I was impressed with her managerial skills, ability to strategize, her flexible demeanor, and work ethic. Sannie managed a large team of individuals with grace and ease. She was able to support her direct reports by helping them prioritize their work and had a natural way of pushing them to be their best.

In the time I worked with Sannie, she was never afraid of a challenge. She didn’t shy away from the tough work, but was instead the one leading the charge to implement a new process, onboard an advanced solution, or optimize a procedure.

Sannie also has the incredible ability to balance flexibility with “what’s best for the company and the team.” She is open to ideas and new strategies and is an unbelievable listener. However, she is also a strategic thinker who can understand the long-term impact, weigh pros/cons, and make data-driven decisions. I cannot recommend Sannie enough and think she would add immense value to any team.

— Mary Sahlin
“

Sannie is a skilled and diligent marketing operations leader with expertise in events, member engagement, email marketing, and sales support. She is committed, organized, thorough, and focused on the end result. These attributes also keep her teams calm and productive in challenging, fast-paced environments with converging demands.

Her preference for clarity, specificity with words, and love for a task well done mean that she can support high-quality execution just as much as substantiated strategy. I would recommend her to anyone keen on getting things done, and gladly work with her again.

— Adarsh Nalam
Contact

Let's build
something together

Ready to discuss your marketing goals? Let's connect to explore how fractional marketing leadership can support your business.

Name
Susannah (Sannie) Sieper
Location
Boulder, Colorado
Email
sannie.sieper@gmail.com
LinkedIn
linkedin.com/in/sanniesieper
Schedule a Conversation