Senior Administrative Assistant

Job Function:

Business Support

Job Sub Function:

Administration & Secretarial

Job Category:

Professional

All Job Posting Locations:

Horsham, Pennsylvania, United States of America

Job Description:

We are searching for the best talent for a Senior Administrative Assistant. This is a hybrid role available in Horsham, PA.

This position will require 3 days in office and 2 days remote.

About Oncology

Our expertise in Innovative Medicine is informed and inspired by patients, whose insights fuel our science based advancements. Visionaries like you work on teams that save lives by developing the medicines of tomorrow.

Our Oncology team is focused on the elimination of cancer by discovering new pathways and modalities to finding treatments and cures. We lead where medicine is going and need innovators with an unwavering commitment to results.

Join us in developing treatments, finding cures, and pioneering the path from lab to life while championing patients every step of the way. Learn more at

The Sr. Administrative Assistant provides high level administrative and operational support to the Directors of Marketing for both Bladder and Prostate, ensuring the efficient management of daily priorities, communication flow, and organizational initiatives. This role requires excellent judgment, strong organizational skills, and the ability to manage sensitive information while coordinating across global teams and multiple stakeholders.

Key Responsibilities

Provides administrative support including meetings management, team management, travel & expenses, reporting, and communication management for the directors and the marketing teams.

Meetings Management:

• Calendar management (i.e. schedule meetings, accept / decline meetings, communication surrounding meetings)
• Meeting conflict resolution & highlight urgent / immediate requests
• Coordinating interviews & 1:1s
• Staff (Direct Reports) and Team Meetings
• Coordinate onsite and offsite team meetings, including sourcing venues, arranging catering, preparing agendas, and managing logistics.
• Assist with any documents required for key meetings and proactively obtain information required for meetings (i.e. presentations, pre-reads)
• Provide hospitality support, including greeting guests and managing catering setup and cleanup to create a welcoming, organized meeting environment.

Team Management:

• Handles confidential matters requiring discretion and judgement
• On-boarding/Off-boarding (Employees, Contractors): New Hires, Terminations, Leave of Absences, Promotions, Transfers, & Return to Work
• Maintain organization charts and distribution lists
• Plan and execute team building events and celebrations for life events and key business milestones to strengthen team cohesion and culture.
• Coordinate gifts for team life events to reinforce a culture of recognition and support.
• Collaboration/coordination with other admins
• Assist in printing, copying, scanning, filing or destroying documents or mail
• Maintains office environment

Travel & Expenses:

• Make all domestic/international travel arrangements and prepare documents for passport/VISA, including flights, hotel, car service, car rental, and train
• Process expense reports, including receipt management
• Oversee interview logistics and related travel coordination
• Coordinate PharmD travel and reimbursement processes
• Manage Corporate Meeting Card (CMC) activity, including tracking expenses and supporting documentation.
• Provide support in resolving issues related to AmEx, phone services, IT, and vendor inquiries

Reporting:

• Coordinates, prepares, and edits reports and presentations
• Process purchase and check requests

Communication Management:

• Disseminate team communications, including announcements and new hire updates, to maintain alignment and awareness across the organization

Qualifications Education:

• High school diploma required; Bachelor's degree or formal administrative training preferred.

Required:

• A minimum of 2 years of administrative experience
• Proficiency in Microsoft 365 (Outlook, PowerPoint, Excel, Teams), collaboration tools, and expense systems.
• Strong experience with digital platforms and virtual meeting technologies.
• Exceptional organizational and prioritization skills with the ability to manage multiple priorities.
• Strong interpersonal and communication skills, capable of engaging with executives and stakeholders at all levels.
• Proven ability to exercise discretion, maintain confidentiality, and resolve complex issues independently.
• Demonstrated agility and adaptability in a hybrid work environment.

Preferred:

Preferred Skills:

Required Skills:

This job posting is anticipated to close on 4/3/2026.

Johnson & Johnson is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, national origin, disability, protected veteran status or other characteristics protected by federal, state or local law. We actively seek qualified candidates who are protected veterans and individuals with disabilities as defined under VEVRAA and Section 503 of the Rehabilitation Act.

Johnson & Johnson is committed to providing an interview process that is inclusive of our applicants' needs. If you are an individual with a disability and would like to request an accommodation, please contact us via or contact AskGS to be directed to your accommodation resource.