Senior Recruiter and People Operations

About the Company

SirenOpt helps manufacturers make better, safer, and more reliable micro- and nano-materials. Our manufacturing intelligence platform uses a combination of cold atmospheric plasma, physics-informed machine learning, and predictive analytics to provide real-time visibility into material behavior.

Responsibilities

• Own full-cycle recruiting across technical and non-technical roles
• Partner with hiring managers to define role requirements and hiring strategies
• Build and maintain strong candidate pipelines
• Manage and optimize the Applicant Tracking System (ATS) and recruiting workflows
• Coordinate interviews, candidate communications, and offer processes
• Manage relationships with external search firms for specialized roles
• Support onboarding and new hire orientation
• Assist with HR operations including employee records, compliance, and policy administration
• Help develop and document HR and recruiting processes
• Contribute to employer branding efforts

Requirements

• Bachelor’s degree in Human Resources, Business Administration, or related field
• 8+ years of experience in recruiting with exposure to HR responsibilities
• Experience owning recruiting across technical and non-technical functions
• Proven ability to partner with leadership on workforce planning
• Familiarity with onboarding, compliance, and employee lifecycle support
• Startup experience preferred
• Experience with ATS platforms (e.g., Greenhouse)
• Exposure to HRIS systems, payroll coordination, and benefits administration
• Familiarity with Gusto is a strong plus

Benefits

• Equity and salary compensation based on experience
• Health, Dental, and Vision plans
• 401k matching
• 20 days of PTO per year
• Approximately 15 paid US holidays per year