Title: Senior Human Resources Business Partner
Location: Los Osos, California
Reports to: Director of Human Resources
Rantec Power Systems Inc. is growing — and we’re looking for a strong Senior HR Business Partner to join our team!
Based along California’s scenic Central Coast, Rantec is an upper‑tier designer and manufacturer of power supplies for the military and aerospace markets. We are an engineering‑driven company with deep expertise in power electronics, design, manufacturing, and test.
If you’re a strategic HR leader who thrives in a fast‑paced environment and enjoys partnering closely with managers and directors, this role offers both impact and growth.
Why You’ll Love Working at Rantec
• Competitive wages
• Excellent benefits: Medical (PPO, HSA), Dental, Vision, FSAs
• Vacation: 2 weeks to start + Holidays + 5 days Paid Sick Leave
• 401(k) with up to 6% company match
• Tuition Assistance
• Peer‑to‑Peer Recognition & Years of Service Awards
• 9/80 schedule — every other Friday off!
• Free catered lunch on worked Fridays/paydays
• Voluntary overtime available
• Beautiful location near the Pacific coast
Scope
The Senior Human Resources (HR) Business Partner serves as a strategic and hands‑on advisor who strengthens organizational capability and supports Rantec’s mission within a fast‑paced aerospace environment. Acting as a Strategic Partner , the HRBP aligns people practices with long‑term business goals, partnering closely with directors, managers, and supervisors to drive workforce planning, development, and organizational effectiveness. As an Operations Manager , the Senior HRBP ensures consistent application of policies, procedures, and HR governance, supporting key programs such as performance management, compensation and benefits, training and development, wellness, and safety. In the role of Employee Mediator , the HRBP addresses workplace concerns, resolves conflict, and fosters trust, fairness, and employee engagement across teams. When critical issues arise, the HRBP functions as an Emergency Responder , acting swiftly to manage high‑risk situations, complex employee relations matters, and compliance-sensitive challenges.
Across all four roles, the HRBP supports and administers essential HR functions, including employee relations, performance management, engagement, and talent programs, while ensuring legal compliance, strengthening employee experience, and contributing to a culture that supports safety, innovation, and operational excellence.
Essential Duties and Responsibilities, including, but are not limited to the following:
Strategic HR Partnership and Workforce Planning Partner with business leaders to develop and execute workforce strategies aligned with organizational objectives, including workforce planning, talent assessments, organizational design, staffing needs, and succession planning.
Serve as a trusted advisor to managers and supervisors on organizational effectiveness, employee performance, workforce challenges, and HR best practices.
Analyze workforce trends, employee data, and organizational needs to identify risks, recommend solutions, and support informed business decisions.
Onboarding Support employee onboarding activities to ensure new hires are effectively integrated into the organization and understand performance expectations, company policies, and available resources.
Administer the 30/60/90-day new hire performance review process, including notifying managers of upcoming reviews, monitoring completion, tracking outstanding evaluations, and following up to ensure timely execution.
Performance Management and Talent Development Lead and administer the annual and mid-year performance review processes, including developing implementation timelines, coordinating employee and management communications, configuring review templates and workflows in Paylocity, monitoring completion, and ensuring timely execution.
Partner with managers to strengthen performance management practices,…