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Who We Are

Michelle Gray, President, HR Synergy, LLC

Michelle has worked in the Human Resource industry for over twenty years. With generalized experience, Michelle is knowledgeable in the areas of labor law compliance, employee relations, compensation, benefits, worker’s compensation, and training.

After being impacted by the recession and a reduction in force, Michelle was determined to help businesses who either could not afford or did not have a need for an in-house human resource department.

In 2009, HR Synergy, LLC was developed with our core business focus on Federal and State Labor Law Compliance education for employers and effective Employee Communication Tools. All employers have labor laws they are expected to comply with!

Michelle is an active member of the National Human Resource Association (NHRA), Massachusetts Nonprofit Network, Manchester Human Resource Association (MAHRA), New Hampshire Center for Nonprofits, Greater Manchester Chamber of Commerce, Society of Human Resource Management (SHRM), sits on the board for the HR State Council of New Hampshire and is a steering committee member for Leadership of Greater Manchester.

Michelle is an avid believer that people should not be held accountable to meet expectations that have not been clearly defined.

Rhonda Winn, Recruiting Manager

We are so lucky to have Rhonda Winn as our recruiting manager! Rhonda recently placed 4 candidates for 2 of our clients (within 1 month)!  Rhonda is awesome at meeting deadlines and always delivers top-notch candidates.  Rhonda is not only a rock star for clients but also her team at HR Synergy.  While working diligently on filling client positions, Rhonda has located a perfect addition to the HR Synergy team.


Jessica Karwatske, HR Specialist

Jessica Karwatske is an HR Specialist with a BA in Anthropology, who assists with recruiting, compensation analysis, and special projects. Jessica began her career working in social services and has 15 years’ experience administering public benefits programs. She became interested in Human Resources when she was tasked with reviewing resumes during a time when her employer was both actively hiring AND restructuring its HR department. Jessica believes in a healthy work/life balance, and that maintaining strong boundaries can help employers and their staff achieve success. A self-described “word-nerd,” Jessica ranks in the top 5% of players on the ScrabbleGo app. In her free time, Jessica enjoys traveling, hiking, and birding.


Linda Tsantoulis, HR Executive Consultant

Linda Tsantoulis is an HR Executive Consultant who brings over 30 years of diverse Human Resources experience to HR Synergy.  Her areas of expertise include HR Compliance, handbook development, policy and procedure development and employee relations.  Prior to joining the HR Synergy team, Linda worked for corporate, retail, non-profit and start-up companies, with a focus on HR infrastructure and complete employee life-cycle needs.  Linda currently provides clients with both short and long-term human resources consulting support including overall HR planning and strategy.

Linda earned a B.S. from Northeastern University as well as PHR and SHRM-CP certifications.

Aimee Kozlowski, Human Resource Business Partner

Aimee Kozlowski is a Human Resources Business Partner with over 30 years of experience in a variety of industries.  She has served as a sole practitioner in a majority of her positions, so her experience covers all aspects of the human resources field.  Aimee’s particular areas of interest are employee relations, benefits, compliance and negotiations.  She enjoys getting to know her clients to best serve their needs. 
Aimee is a member of Society of Human Resource Management (SHRM) as well as Human Resources Association Greater Concord (HRAGC).  She has obtained her B.S in Human Communication (with a minor in Psychology) from James Madison University.