Senior Human Resources Generalist

TMI Climate Solutions LLC

As a part of the global industrial organization Marmon Holdings—which is backed by Berkshire Hathaway—you’ll be doing things that matter, leading at every level, and winning a better way. We’re committed to making a positive impact on the world, providing you with diverse learning and working opportunities, and fostering a culture where everyone’s empowered to be their best.

Who We Are

TMI Climate Solutions has been building advanced, custom HVAC solutions for nearly 40 years, supporting customers across industrial, healthcare, pharmaceutical, education, government, data center, and other highly specialized environments. Our work is rooted in innovative design, custom manufacturing, and delivering dependable air handling solutions tailored to each customer’s needs.

As we open our new operation in Mesquite, Texas, we are expanding our U.S. footprint and building a team that will help support TMI’s next phase of growth. This is an exciting opportunity to join a well-established Canadian company at the ground level of a new site launch.

Our Human Resources team will be instrumental in building the culture, processes, and employee experience at this location. In this role, you will help create a workplace where employees feel supported, leaders are equipped, and the site is positioned for long-term success.

What You’ll Do

As a Senior Human Resources Generalist, you will:

• Serve as a trusted advisor to managers on HR policies, labor laws, performance management, talent development, and employee relations.
• Recommend and support disciplinary measures when needed while ensuring fair and consistent application of policies.
• Act as a resource for employees, answering questions on benefits, policies, and workplace practices.
• Manage the full staffing cycle: writing job descriptions, posting roles, screening resumes, coordinating interviews, and preparing offer letters and new hire files.
• Oversee onboarding and integration of new employees, ensuring a smooth transition through probation.
• Identify training needs and coordinate learning and development programs.
• Administer benefits enrollment, support payroll inquiries, and maintain accurate employee records in the HRIS (Workday preferred).
• Partner with Health and Safety on work stoppages and collaborate with HR leadership on complex labor relations issues.
• Draft HR policies, internal communications, and presentations.
• Support HR projects and initiatives that enhance the employee experience.
• Maintain and update the HRIS database for hires, terminations, and employee changes.

What You’ll Need

• Bachelor’s degree in Human Resources, Industrial Relations, or a related field.
• Proficiency with Microsoft Office Suite; experience with HRIS systems (Workday preferred) and payroll systems (ADP WFN preferred).
• Strong judgment, ethics, and confidentiality.
• Excellent written and verbal communication skills.
• Strong organizational, time management, and problem-solving skills.
• Ability to build trust and work effectively across teams.
• Attention to detail and a collaborative mindset.

What You’ll Gain

• The opportunity to contribute to impactful HR projects that support employees across the organization.
• Professional growth in a role that touches every stage of the employee life cycle.
• A supportive team environment with opportunities for collaboration and learning.
• Comprehensive benefits, including:
  • Medical, Dental, and Vision Insurance
  • Prescription Coverage
  • 401(k) with Company Matching

Following receipt of a conditional offer of employment, candidates will be required to complete additional job-related screening processes as permitted or required by applicable law.

We are an equal opportunity employer, and all applicants will be considered for employment without attention to their membership in any protected class. If you require any reasonable accommodation to complete your application or any part of the recruiting process, please email your request to careers@marmon.com, and please be sure to include the title and the location of the position for which you are applying.