Human Resources Manager - Part Time in Syosset, New York at BLUMENFELD DEVELOPMENT GROUP, LTD

Part-Time HR Manager – People Operations | Nassau County, NY | 3 Days/Week | On-Site

A privately held commercial real estate development, construction and management company with a portfolio predominately in Metro New York with a team of ~50 people operating under multiple entity structures seeks Part Time HR Manager.

The Role We're looking for a capable, people-first HR Manager to join us on a part-time basis (3 days/week, on-site in Nassau County). Reporting directly to the CFO, you'll own day-to-day HR operations, serve as the liaison to our outside payroll provider, and be the internal champion for manager development and employee engagement. This is a hands-on role — you'll be the sole HR professional and a trusted resource for both leadership and staff.

What You'll Do

Payroll & Vendor Management

• Serve as the primary internal contact for outside payroll company and outsourced international labor provider
• Review and approve payroll inputs, ensure accuracy across multiple entities and EINs
• Manage payroll calendar, coordinate with finance/CFO on reporting and reconciliation
• Troubleshoot employee payroll questions and resolve discrepancies

Manager Training & Development

• Design and deliver practical manager training on topics including performance conversations, documentation, conflict resolution, and legal compliance
• Build a simple, repeatable onboarding experience for new managers and team members
• Coach frontline and mid-level managers on employee relations situations as they arise
• Partner with leadership on goal-setting frameworks and annual review cycles
• Support management team through compensation planning — raises, bonuses, and pay-equity reviews
• Guide managers on performance improvement plans and documentation
• Coach frontline and mid-level managers on employee relations situations as they arise

Team Building, Engagement & Culture

• Plan and execute team engagement initiatives — recognition programs, staff events, internal communications
• Help build a cohesive culture across a workforce in the NY Metro area across multiple offices - in person.
• Gather employee feedback and surface themes to leadership
• Our team works across multiple properties and offices, so building connection requires intentionality

General HR Operations (managed in coordination with our 3rd party payroll and benefits provider)

• Maintain employee records, I-9s, personnel files across all entities
• Manage onboarding and offboarding processes end-to-end
• Administer PTO, leaves of absence, and attendance tracking
• Partner with our third-party payroll and benefits provider to ensure compliance with New York State, New York City, and other applicable employment laws across the full employee lifecycle

Onboarding and recruiting

• Support job postings and interview coordination for open roles as needed
• Screen Candidates as needed

What We're Looking For

• 5–8 years of HR generalist or HR manager experience; real estate, construction, or multi-site/multi-entity background a strong plus
• Hands-on experience managing or coordinating with an outside payroll vendor (ADP, Paychex, Gusto, or similar)
• Proven ability to facilitate manager training and team-building programs — not just design them
• Experience running performance management cycles — goal setting, reviews, promotion and compensation decisions
• Strong knowledge of New York State employment law and multi-entity compliance
• Comfortable as a department of one — self-directed, organized, and practical
• PHR, SHRM-CP, or equivalent a plus but not required
• Proficiency in HRIS and payroll platforms
• Excellent communication and organization skills - fully proficient with Microsoft Office
• Available as needed during off-days

compensation is based of part time employment

benefits vary