Senior Human Resources Business Partner

6 days ago


El Segundo, California, United States Castelion Full time
About Castelion

Castelion is a pioneering defense development and production company that's revolutionizing the industry with its innovative approach. We're committed to delivering cutting-edge, next-generation long-range strike weapons systems that give America and its Allies a decisive edge.

Job Summary

We're seeking a highly motivated and experienced Human Resources professional to join our team as a Senior HR Business Partner. As a critical partner in building our company culture, you'll support both hourly and salaried employees, handle all HR functions, and drive strategic initiatives that support our growth.

Key Responsibilities
  • Partner with leadership to develop and implement HR strategies that align with our business objectives.
  • Oversee the full employee lifecycle, from onboarding to offboarding, ensuring a seamless and positive experience for all employees.
  • Lead efforts to build and strengthen our company culture, promoting engagement and retention during a period of rapid growth.
  • Ensure compliance with all federal, state, and local employment laws across multiple states.
  • Develop and implement HR policies and procedures that scale with our growth.
  • Administer benefits, compensation, and payroll for a multi-state workforce.
  • Act as a key resource for employees, providing guidance on HR-related matters such as performance management, professional development, and conflict resolution.
  • Partner with leadership to ensure a safe, inclusive, and productive work environment across all sites.
  • Contribute to strategic initiatives that support our company's goals, such as diversity and inclusion efforts and workforce development programs.
Requirements
  • 5+ years of HR experience, with a preference for candidates with early-stage startup experience.
  • Extensive experience managing HR functions for non-exempt employees across multiple sites, with a deep understanding of hourly workforce dynamics and challenges.
  • Proven track record of supporting both hourly and salaried employees in a fast-paced environment.
  • Ability to handle being the sole HR person, balancing strategic and tactical responsibilities during a period of rapid growth.
  • Demonstrated experience building and fostering company culture, particularly in high-growth environments.
  • Strong knowledge of HR best practices, employment laws, and compliance requirements.
  • Ability to be hands-on and flexible with a "roll up your sleeves" approach to problem-solving.
  • Exceptional communication and interpersonal skills, with a collaborative mindset.
  • PHR/SPHR certification or equivalent is preferred.
Leadership Qualities
  • Bias to Action and Creative Problem Solving: Demonstrated ability to question assumptions and propose breakthrough ideas that lead to successful implementation.
  • High Commitment, High Initiative: A genuine passion for Castelion's mission and a strong sense of accountability.
  • Clear Communicator: Proactively communicates challenges and solutions.
ITAR Requirements
  • To conform to U.S. Government export regulations, the applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.

Castelion is an equal-opportunity employer. Employment decisions are based on qualifications, experience, and merit, regardless of race, color, religion, gender, national origin, veteran status, disability status, sexual orientation, or any other protected class.



  • El Segundo, California, United States KARL STORZ ENDOSCOPY Full time

    Job Title: Director of Human Resources Business PartnersWe are seeking a visionary HR leader to spearhead the development and execution of innovative HR strategies that align with our business objectives and fuel our growth. As the Director of Human Resources Business Partners, you will collaborate closely with key client groups and senior executives to...


  • El Segundo, California, United States Karl Storz GmbH & Co. KG Full time

    Job Title: Director of Human Resources Business PartnersWe are seeking an exceptional HR leader to join our dynamic team at our US headquarters in El Segundo, CA. As the Director of Human Resources Business Partners, you will spearhead the development and execution of innovative HR strategies that align with our business objectives and fuel our growth.Key...


  • El Segundo, California, United States Disability Solutions Full time

    Job Title: Director of Human Resources Business PartnersWe are seeking an exceptional Director of Human Resources Business Partners to join our dynamic team at our US headquarters in El Segundo, CA. In this pivotal role, you will spearhead the development and execution of innovative HR strategies that align with our business objectives and fuel our...


  • El Cajon, California, United States GKN Aerospace Full time

    About the RoleGKN Aerospace is seeking a highly skilled Human Resources Business Partner to join our team. As a key member of our HR function, you will play a critical role in supporting the success of our site operations and driving organizational effectiveness.Key ResponsibilitiesSupport the development and implementation of HR strategies and initiatives...


  • El Segundo, California, United States eLink Recruiting Solutions, Inc Full time

    Job DescriptionJob DescriptionJOB SUMMARYThe Human Resources Generalist role involves supporting the organization, coordination, and implementation of Human Resources programs. Developing and implementing talent strategies that prioritize human-centered approaches, aligning these strategies with company goals while considering the diverse needs and...


  • El Segundo, California, United States eLink Recruiting Solutions, Inc Full time

    Job SummaryOur company, eLink Recruiting Solutions, Inc, is seeking a skilled Human Resources Generalist to support the organization's HR programs. The ideal candidate will develop and implement talent strategies that prioritize human-centered approaches, aligning them with company goals while considering the diverse needs and aspirations of our...


  • El Segundo, California, United States USfalcon Full time

    Job Title: Human Resources Manager, Sr.Job Summary:We are seeking a seasoned Human Resources Manager, Sr. to join our team at USfalcon. As a key member of our organization, you will be responsible for managing and supervising human resources management products or services.Key Responsibilities:Manage and supervise human resources management products or...


  • El Segundo, California, United States USfalcon Full time

    Job Summary:We are seeking a seasoned Human Resources Manager, Sr. to join our team at USfalcon, a mid-tier professional services company supporting a diverse and global customer base of DoD and Federal Agencies. As a key member of our HR team, you will be responsible for managing, supervising, administering, advising on, and delivering human resources...


  • El Segundo, California, United States USfalcon Full time

    Job SummaryWe are seeking a highly experienced Human Resources Manager, Sr. to join our team at USfalcon in El Segundo, CA. This position is contingent upon the award of a contract.Key ResponsibilitiesManage and supervise human resources management products or services.Administer and advise on human resources management activities.Deliver human resources...


  • El Segundo, California, United States USfalcon Full time

    Job Summary:We are seeking a seasoned Human Resources Manager, Sr. to support one of our valued customers in El Segundo, CA.Position Requirements:This position manages, supervises, administers, advises on, and delivers human resources management products or services.Key Responsibilities:Manage and supervise human resources management activities, including...


  • El Segundo, California, United States USfalcon Full time

    Job Summary:We are seeking a highly skilled Human Resources Manager to join our team at USfalcon. As a key member of our organization, you will be responsible for managing, supervising, and administering human resources management products or services.Key Responsibilities:Manage and supervise human resources management activities, including personnel...


  • El Segundo, California, United States Apollo Professional Solutions Full time

    Job Title: Human Resources CoordinatorJob Summary:The Human Resources Coordinator will provide day-to-day support to the HR team, focusing on employee data management, HR systems, reporting, and analytics. This role requires strong analytical, organizational, and problem-solving skills, with the ability to multitask and prioritize in a fast-paced...


  • El Segundo, California, United States USfalcon Full time

    We are seeking a highly skilled Human Resources Manager to join our team at USfalcon, a leading provider of innovative solutions in Aviation, Space, Information Technology, and Business Operations.This exciting opportunity involves managing, supervising, administering, and advising on human resources management products or services. The ideal candidate will...


  • El Segundo, California, United States USfalcon Full time

    Job Summary:We are seeking a highly experienced Human Resources Manager, Sr. to join our team at USfalcon in El Segundo, CA. This position is contingent upon the award of a contract.Key Responsibilities:Manage and supervise human resources management products and services.Administer and advise on human resources management operations.Deliver human resources...


  • El Segundo, California, United States USfalcon Full time

    Job Summary:We are seeking a seasoned Human Resources Manager, Sr. to support one of our valued customers in El Segundo, CA. This position is contingent upon the award of a contract.Compensation: $87,000-$97,000Key Responsibilities:This role will manage, supervise, administer, advise on, and deliver human resources management products or services. The ideal...


  • El Segundo, California, United States Elite Placement Group, Inc. Full time

    Human Resources ManagerElite Placement Group, Inc. is seeking an experienced Human Resources Manager to join their team in Los Angeles. This is a long-term temporary assignment with the potential to become a full-time opportunity.Key Responsibilities:Develop and implement HR strategies and initiatives aligned with the company's overall business...


  • El Segundo, California, United States BryceTech Full time

    Job Title: Human Resource Manager Level 3BryceTech is seeking an experienced Human Resource Manager to support our US Space Force, Space Systems Command (SSC) customer.About the RoleThe successful candidate will assist the Government in the execution of routine business operations, providing executive-level administrative support, office management,...


  • El Segundo, California, United States US Tech Solutions Full time

    Job Title: Human Resources CoordinatorLocation: El Segundo, CA, 90245Duration: 6 MonthsDescription:The HR Coordinator is responsible for providing day-to-day support to the El Segundo HR Business Partners, Compensation, Benefits, HRIS, HR Communications and related team members. This includes responding to HR Business Partner and employee questions,...


  • El Segundo, California, United States BryceTech Full time

    Job Title: Human Resource Management Level 4BryceTech is seeking an experienced Human Resources Manager to support our US Space Force, Space Systems Command (SSC) customer.Job SummaryThe successful candidate will provide executive-level administrative support, office management, personnel management, human resources management, and configuration and data...


  • El Segundo, California, United States USfalcon Full time

    Job Summary:We are seeking a seasoned Human Resources Manager, Sr. to join our team at USfalcon, a mid-tier professional services company supporting a diverse and global customer base of DoD and Federal Agencies. As a key member of our HR team, you will be responsible for managing, supervising, administering, advising on, and delivering human resources...