About Dennis Tyrrell

Running a business means wearing every hat until a few start slipping. When hiring stalls, employee issues drain your afternoon, or high-stakes decisions leave you second-guessing your next move, you don’t necessarily need another six-figure executive salary on your payroll. You just need straight answers and steady guidance from someone who has handled the pressure before.

Based right here in Phoenix, Arizona, Tyrrell Consulting provides fractional human resources, talent acquisition, executive advisory services, and one-on-one career transition coaching for business owners, leadership teams, and professionals across the Valley.

My mission is straightforward: give small and midsize companies on-demand access to senior-level HR and operational leadership, without the overhead, long-term contracts, or corporate jargon.

Hi, I’m Dennis.

For more than 35 years, I've worked with people and organizations in leadership, human resources, business operations, and organizational management. Today, I work with business owners and executives to solve staffing problems, manage workplace challenges, improve operations, and make better business decisions.

My experience includes managing multimillion-dollar budgets, leading large teams, overseeing more than 1,000 hires, and advising organizations ranging from small businesses to major corporations. I also have graduate education in Human Resources and Counseling, which gives me a unique perspective on both the business and human sides of running an organization.

I'm also the author of Change Without Chaos, where I share practical insights on navigating change, managing uncertainty, and making thoughtful decisions when things don't go according to plan.

Before starting Tyrrell Consulting, my career included military service, executive leadership in the fire service, and labor relations. Those experiences taught me a great deal about managing people, solving problems, and making difficult decisions—skills I continue to use in my consulting work today.

Whether we're discussing a hiring challenge, a difficult employee situation, or an important business decision, my approach is simple: listen, understand the problem, and work with you to find a practical solution.

I don't hand you a 50-page binder of generic advice and walk away. I  roll up my sleeves and fix the operational bottlenecks that keep you up at night.

• The Problem: You have outgrown ad-hoc HR, but hiring a full-time Chief People Officer or HR Director isn't in the budget.
• How We Help: You get senior HR leadership on a flexible, fractional schedule. We handle employee relations, workplace investigations, policy creation, performance management systems, and compensation structure so your team stays protected, productive, and focused.

• The Problem: Bad hires are expensive, time-consuming, and exhausting for your existing staff.
• How We Help: Drawing on experience overseeing 1,000+ career hires, we help you define the exact profile you need, design objective interview scorecards, and implement practical screening workflows. We help you find people who fit your culture and pull their own weight from day one.

• The Problem: Leadership can be an isolating experience, especially when navigating rapid growth, labor disputes, or restructuring.
• How We Help: As an executive advisor, I act as your sounding board for critical decisions. Using proprietary leadership frameworks like RPR (Read–Process–Respond) and Intentional Listening, we train founders, partners, and emerging managers to communicate clearly, resolve friction early, and lead teams under pressure.

• The Problem: Career crossroads, workplace disputes, and major industry shifts can stall even the most capable professionals.
• How We Help: For individuals, we combine behavioral performance techniques with real-world hiring insights. Whether you are negotiating an executive transition, working through a difficult work environment, or charting your next chapter, we build a clear, actionable roadmap to get you there.

Running a business comes with challenges, but you don't have to handle every one of them on your own. Here's where Dennis can help.

Hiring & Employee Retention

High turnover and bad hires cost you time, money, and productivity. We help you improve your hiring process through better candidate screening, structured interviews, and clear job expectations, so you can build a dependable team and reduce costly hiring mistakes.

Employee Relations & Workplace Conflicts

Employee disagreements, performance issues, and workplace disputes can quickly become distractions. We help you address these situations fairly, resolve problems before they escalate, and maintain a more productive workplace.

Executive Support & Business Decisions

Running a business means making difficult decisions, often without someone to bounce ideas off. We provide an experienced outside perspective to help you evaluate options, work through challenges, and make decisions with greater confidence.

HR Support Without the Full-Time Expense

Not every business needs or can afford a full-time HR director. Our fractional HR services give you access to experienced HR support when you need it, without adding another full-time position to your payroll.

Whether you need help with hiring, managing employee issues, or making an important business decision, we're here to provide practical support that fits your business.