Vision, Velocity, and the Human Side of Growth
Dr. Donna Miller founded Growth Spectrum LLC in 2017 to provide opportunities for educators, professionals, and businesses to achieve exceptional outcomes.
The small but focused team of fractional consultants helps small to medium businesses leverage their experience at coaching professionals using research-driven tools and combining that with 360-degree feedback and competency-based observations.
The core focus has been on marketing and solution delivery. The CMO, Tim Biskup, has 30 years leading marketing and MarTech projects for Fortune 500 companies as the client and agency.
Fractional Support for Executive Coaching and Marketing Growth
Our Vision: To Make Our Clients Successful
Sustainable, Mutual, Fractional, Targeted for Your Sustainable Growth
One of the things Donna and Tim noticed during their leadership careers was the astonishing number of agents (vendors, employees, leadership teams) that were not aligned with their principal (founder, board, leadership.) What economic sand organization studies calls “The Agency Problem.” This is why we were vehement that we were not building an agency. We wanted to build something that:
Had the goal of working itself out of a job; helpful, but not necessary on an ongoing basis.
Left the client better off and fully able to create sustainable growth from our work.
Is only engaged when there is a need, no MRR or retainer, pay as you want us.
Could create unique and impactful change from explorer experience in periods of disruption.
Allowed us to focus on outputs, integration, outcomes, and impacts.
Our Approach: Data-driven, Fact-Based, Inputs Enabled by Deep Psychological Understanding for Change Management
With extensive experience in Change Management and Implementation Science we understand the importance of managing everybody’s unique traits, inclinations, and energy through the process of disruptive change. So many times, change fails because leaders believe they can just “will it to happen” by brute force and don’t recognize the varied communications and acceptance planning that is involved in planning and managing successful implementations.
Leadership Coaching is simply another extension of this same methodology. Change is tough, people will find ways to avoid it. We utilize data and observations to create a case for change from multiple inputs. When people understand how their behavior impacts the team and their career there is much more desire to make the changes. In our culture today people focus a lot on leveraging your strengths and that is a great first start. But every strength comes with a weakness, and every over-dependence on a towering strength creates impact that is counterproductive to what is being attempted. By doing behavioral assessments to align with culture and inclinations we are able to find synergies, align outputs, and grow.
Marketing is always evolving, and the market is always changing. Any marketing plan or strategy that is not founded in planning for and adapting to change will be irrelevant in a year. The marketing golden age of the 1960’s is gone. You can’t just have a great idea and some flashy content and rule the world. Implementing change is a full-time job in marketing.
Visionary Leadership Across Strategy, Marketing, and Operations
Our principal fractional consultant is Tim Biskup
Tim Biskup is a visionary strategist and executive leader with over two decades of experience driving transformation across marketing, technology, and operations. Known for his ability to bridge systems thinking with creative execution, Tim has held senior roles including Chief Delivery Officer, CMO, VP Solutions, where he built scalable PMOs, launched disruptive marketing strategies, and led global teams across industries. His career spans Fortune 500 brands, high-value agencies, and entrepreneurial ventures, consistently delivering impact through data-driven innovation, customer-centric design, and operational clarity.
Tim’s leadership style blends emotional intelligence with decisive action. His developmental journey, from executor to strategist, is reflected in his coaching of high-performing teams, mentorship of emerging leaders, and mastery of frameworks like Kolbe, Lominger, and DISC. He’s praised for his ability to reframe challenges, energize cross-functional collaboration, and build systems that externalize complexity while amplifying team strengths. Whether scaling delivery models or navigating crisis communications, Tim leads with integrity, insight, and a relentless focus on outcomes and impact.
Beyond execution, Tim is a passionate facilitator and organizational diagnostician. He’s the architect behind Growth Spectrum’s quadrant-aligned coaching methodology, which integrates personality, strengths, and competencies into actionable development plans. His academic work and LinkedIn endorsements reflect a rare blend of intellectual horsepower, emotional depth, and strategic agility. Tim’s mission is to help leaders stop compensating and start activating, building the execution bridges that turn vision into reality.
From Executor to Architect: A Leader Who Builds What Others Can’t See
Fortune 500 Experience
SMB & LC Experience