Role OverviewSirenOpt is looking for an experienced Senior Recruiter to help us build and scale a high-performing team while supporting core HR operations. As the first full-time recruiter on the SirenOpt team, you will own full-cycle recruiting while contributing to key HR processes such as onboarding, employee lifecycle support, and policy implementation. The ideal candidate is hands-on, strategic, and comfortable operating in a fast-paced startup environment with a high degree of ownership.
This role offers an exciting opportunity to shape our hiring strategy and HR infrastructure from the ground up while working closely with leadership and cross-functional teams throughout the organization.
What You'll Do- Own full-cycle recruiting across technical and non-technical roles (sourcing, screening, coordinating interviews and on-site visits, and closing candidates)
- Partner with hiring managers to define role requirements, interview processes, and hiring strategies
- Build and maintain strong candidate pipelines for current and future critical roles
- Manage and optimize the Applicant Tracking System (ATS) and recruiting workflows, ensuring an excellent candidate experience
- Coordinate interviews, candidate communications, and offer processes
- Identify when to engage external search firms for specialized or senior roles, and manage those relationships and associated search processes
- Support onboarding and new hire orientation to ensure a smooth employee experience
- Assist with HR operations including employee records, compliance, and policy administration
- Help develop and document HR and recruiting processes, policies, and best practices
- Contribute to employer branding efforts (careers page, LinkedIn presence, events, and referrals)
What We're Looking For- Bachelor's degree in Human Resources, Business Administration, or related field
- 8+ years of experience in recruiting, with exposure to HR responsibilities
- Demonstrated experience owning recruiting across a wide variety of functions including both technical and non-technical roles
- Proven ability to partner with leadership and hiring managers on workforce planning and hiring strategy
- Familiarity with processes such as onboarding, compliance, and employee lifecycle support
- Strong organizational and communication skills with attention to detail
- Startup experience is strongly preferred, including a demonstrated ability to manage multiple priorities effectively in a fast-paced environment
- Experience with ATS platforms (e.g., Greenhouse) and recruiting tools
- Exposure to HRIS systems, payroll coordination, and benefits administration
- Hands-on experience with HRIS, payroll coordination, and benefits administration; familiarity with Gusto is a strong plus
Why Join SirenOpt- Opportunity to make a direct impact in building a growing, mission-driven company
- Work closely with leadership and influence hiring and HR strategy
- Fast-paced, collaborative startup environment with high ownership
- Exposure to cutting-edge technology in advanced manufacturing and AI
Base Pay Range
$110,000-$140,000 USD
Benefits- Equity and Salary compensation depends on experience
- Health, Dental, Vision plans provided
- 401k matching provided
- Time off: 20 days of PTO per year, plus approximately 15 paid US holidays per year
