Senior Human Resources Manager (People & Culture)

Atomix is a rapidly growing logistics-technology company headquartered in Oak Creek, Wisconsin (#9 Inc. 5000 in 2025). We offer an environment centered around professional growth, making it an ideal workplace for owner- and growth-driven professionals looking to help build something new and scale. 

Job Description:

The Senior Human Resources Manager (or what we like to call it at Atomix, People Operations & Culture,) will play a critical, hands-on role in leading, building, and driving the success of our People today and in the future.

You will work directly with our COO and CEO, operating cross-functionally to fully own all aspects of HR, People, & Culture - recruiting and onboarding new employees, employee management/ reporting/ compliance, payroll/benefits analysis, policy, performance management, and streamlining HR-related activities.

• As the first senior department hire, you will be responsible for the both the strategic direction and day-to-day execution of HR Initiatives.
• This position will be responsible for overseeing all Human Resources aspects of the business, including The ideal candidate will have a strong background in Human Resources within the logistics or supply chain industry, along with expertise in building and managing a lean HR Department in a growing company.

Responsibilities:

Core

• 5–8 years experience in HR (generalist or manager role)
• Hands-on experience owning payroll, benefits, and compliance
• Experience supporting operations-heavy or hourly workforces
• Proven "Builder" comfortable and exceptional at building processes where none exist
• Very strong written and verbal communication
• High judgment, discretion, and accountability
• Ability to work under pressure, prioritize tasks, and meet tight deadlines in a fast-paced environment
• Bachelor’s degree

Nice to Have

• Previously first or early HR hire experience
• Experience in logistics, manufacturing, or warehousing
• Experience with ADP, HRIS platform, and exposure to multi-state labor compliance
• Bias toward action over perfection
• Takes ownership without waiting for permission

What We Offer

• Full-time, in-office role based in Oak Creek, WI. We work onsite five days a week — when the culture fits, it is fun to be in the office together.
• Competitive salary: $75,000-115,000 per year. This is inclusive of performance bonuses based on attainment of company targets.
• Comprehensive benefits package, including health insurance, PTO, and retirement plans.
• Opportunities for professional growth and advancement.
• A collaborative work environment with a focus on innovation and precision.

Atomix Logistics is an equal opportunity employer. We value diversity and are committed to creating an inclusive workplace for all employees.