Top 1608 Administrative assistant Jobs in Mountainside, Nj

Executive Assistant
By Landmark —Plainfield, NJ
- $65,000 - $75,000 a year
- Weekends as needed
- Microsoft Excel
- Microsoft Outlook
- Office
- Health insurance
- 401(k) matching
Quick Apply
Assistant Bookkeeper/Data Analyst
Confidential —Perth Amboy, NJ
- $40,000 - $50,000 a year
- Full-time
- Bilingual
- Background check
- Spanish
- Health insurance
- Dental insurance
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Construction Administrative Coordinator
Woodmont Properties —Fairfield, NJ
- $70,000 - $90,000 a year
- Full-time
- Hybrid work
- Microsoft Excel
- Microsoft Outlook
- Mid-level
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Administrative Assistant/Receptionist/Billing - Mental Health
Innerspace Counseling, LLC —Old Bridge, NJ
- $20 - $25 an hour
- Full-time
- Customer service
- Medical office experience
- Office
- Health insurance
- Dental insurance
Quick Apply
Executive Assistant
Orsman Design, Inc. —New York, NY
- $70,000 - $85,000 a year
- Email
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
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Executive Assistant (Berkeley Heights, NJ)
Hewlett Packard Enterprise —Berkeley Heights, NJ
- $24.95 - $49.95 an hour
- Full-time
- Hybrid work
- Mid-level
- Office
- 3 years
- Travel reimbursement
Administrative Assistant
Atlantic Health System —Morristown, NJ
- Full-time
- Oracle
- Inventory management
- Writing skills
- 403(b) matching
- AD&D insurance
4d
Administrative Assistant
Cognitive Artificial Intelligence Inc —South Plainfield, NJ
- $22 - $30 an hour
- Full-time
- Customer service
- Word processing
- Computer literacy
- Health insurance
- Dental insurance
Quick Apply
Administrative Assistant, Commercial Contractor
Shionogi Inc. —Florham Park, NJ
- $31 - $54 an hour
- Email
- Hybrid work
- Microsoft Excel
- Research
- Mid-level
12d
Administrative & Scheduling Assistant
Stannah Stairlifts Inc. —Fairfield, NJ
- $25 an hour
- Full-time
- Hybrid work
- Background check
- Office
- Administrative experience
- Health insurance
- Paid time off
Quick Apply
7d
Executive Administrative Asst.
Valley National Bank —Morristown, NJ
- $57,100 - $95,200 a year
- Microsoft Outlook
- Research
- Office
Quick Apply
Business Office Assistant
Livingston Post Acute Care —Livingston, NJ
- $70,000 - $76,000 a year
- Full-time
- Skilled nursing facility
- Office
- Administrative experience
Quick Apply
Work from home Administrative assistant
Qureos Inc —Newark, NJ
- Remote
- Research
- Mid-level
- High school diploma or GED
- Work from home
5d
Full-Time Administrative Assistant
KOHLS —Watchung, NJ
- $17.75 - $27.85 an hour
- Weekends as needed
- 18 years or older
- Merchandising
- Mid-level
- Disability insurance
- Dental insurance
Administrative Assistant
Training Specialties Inc. —Bayonne, NJ
- $25 - $30 an hour
- Full-time
- Google Workspace
- Computer literacy
- Office
- Health insurance
- Dental insurance
Quick Apply
Administrative Assistant
Lackawanna Offices LLC —Montclair, NJ
- $25 an hour
- Part-time
- Microsoft Outlook
- Computer literacy
- Writing skills
Quick Apply
1d
Project Administrative Assistant
APTIM —Linden, NJ
- $22.12 - $36.54 an hour
- 10 hour shift
- Construction site
- Mid-level
- Office
- Paid holidays
- Disability insurance
Quick Apply
Administrative Assistant
Rutgers University —Newark, NJ
- $29.67 an hour
- Full-time
- Microsoft Access
- Office
- University
- Paid holidays
- Dental insurance
Sr. Administrative Associate
Merck —Rahway, NJ
- $82,700 - $130,200 a year
- Full-time
- Microsoft Outlook
- High school diploma or GED
- Analysis skills
- Paid holidays
- Health insurance
4d
Office Coordinator/Administrative Assistant
Virtue care services Inc —Edison, NJ
- $25 - $30 an hour
- Full-time
- Microsoft Word
- Spanish
- Microsoft Excel
- Health insurance
Quick Apply
11d

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Executive Assistant

By Landmark
Plainfield, NJ

Quick Apply

Job Details

Full-time
$65,000 - $75,000 a year

Benefits

Health insurance
401(k) matching

Qualifications

Confidential information handling
Microsoft Excel
Microsoft Outlook
Executive administrative support
Administrative experience
Driver's License
Data entry
Organizational skills
Front desk
Working as an executive assistant
Adobe Acrobat
Editing

Full Job Description

About By Landmark

By Landmark Hospitality is a founder-led, vertically integrated hospitality company operating 15+ restaurants, event venues, and boutique hotels across New Jersey and Pennsylvania — including Liberty House, The Ryland Inn, the Felina restaurants, Logan Inn, and The Albion Summit. For more than two decades, we have built our reputation on the adaptive reuse of iconic properties and on creating guest experiences the rest of the industry tries to copy.

Our team members are Memorymakers. The name is not decorative — it shapes how we evaluate every decision, every shift, and every guest interaction. Through the Art of Hospitality Workers Alliance, we invest in our people, our craft, and the communities around our properties in ways most hospitality groups don’t.

The Role

This is a senior Executive Assistant role supporting one of By Landmark’s founding Principals. You will be the person who makes leadership run — managing a complex calendar, anticipating what’s needed before it’s asked for, and operating with the discretion and judgment that come from real experience in high-level executive support.

You will work in close partnership with the other Principal’s Executive Assistant and the broader support team to keep executive operations running smoothly across the portfolio. Your home base is our Plainfield, NJ office, and you will travel to Landmark properties as the work requires. Some personal support for the Principal, primarily related to travel and business-adjacent functions, is part of the role.

The right person for this job is polished but not precious, organized but adaptable, and confident enough to take initiative without needing to be told when to step in.

What You’ll OwnExecutive Support & Calendar Management

Own and manage the Principal’s calendar — resolving conflicts, shifting priorities, and protecting time with judgment and flexibility
Draft, edit, and prepare correspondence, presentations, reports, agendas, talking points, bios, and professional documents with a high level of accuracy
Manage email and communications flow, ensuring timely responses and clear prioritization
Prepare materials and coordinate logistics for meetings, appointments, executive gatherings, and travel — including itineraries and accommodations for both business and personal needs
Handle expense tracking, invoice coordination, and administrative financial tasks

Coordination & Operations

Partner with the other Principal’s Executive Assistant to ensure seamless day-to-day executive operations
Maintain the Plainfield, NJ Home Base office — organized, prepared, and reflective of the Landmark brand
Support operational and administrative needs across By Landmark venues, traveling to properties as needed
Coordinate social gatherings, philanthropic initiatives, company functions, and family-related appointments with discretion
Plan and execute executive meetings, retreats, and company events end-to-end — logistics, preparation, and follow-up

Projects & Relationships

Oversee special projects and initiatives from kickoff through completion — tracking progress, flagging issues before they surface, and providing timely updates
Maintain strong working relationships across departments, venues, vendors, and external partners
Handle highly sensitive and confidential information with absolute discretion

Who We’re Looking ForRequired

3+ years of experience in executive assistant or senior administrative support roles
Exceptional organizational skills and attention to detail — you catch things others miss
Strong written and verbal communication, including editing and document preparation
Demonstrated ability to manage confidential information with discretion and integrity
Proficiency with Microsoft Office Suite (Word, PowerPoint, Outlook, Excel) and Adobe Acrobat
Flexibility to work beyond standard hours, including evenings and weekends, consistent with the rhythm of a hospitality organization
Valid driver’s license and ability to travel between venues

Preferred

5+ years of executive support experience, ideally supporting C-suite or principal-level executives
Background in hospitality, lifestyle, luxury, or fast-paced service environments
Experience coordinating events and managing logistics for executive functions
Familiarity with accounting basics, expense management, and financial reporting
Bachelor’s degree

How You Operate

You are calm under pressure, precise in execution, and intuitive about what leadership needs before they say it. You navigate different personalities and high-stakes moments with composure and professionalism. You take pride in making things run seamlessly — and you understand that in hospitality, the details are the whole game.

Scope & Logistics

Based at the Plainfield, NJ Home Base office, with regular travel to Landmark properties across New Jersey and Eastern Pennsylvania
This role operates on hospitality time — flexibility for evenings, weekends, and event schedules is part of the job, not the exception
Physical requirements include extended desk work, venue visits, occasional lifting up to 25 lbs (event supplies, presentation materials), and working across office, restaurant, and event settings

Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of this role.

Compensation & Benefits

Base salary: $65,000 – $75,000, commensurate with experience
401(k) with company match
Comprehensive health insurance
Paid sick and vacation days
Dining privileges across all Landmark properties
Professional development opportunities
Participation in the Art of Hospitality Workers Alliance and community impact initiatives

Equal Opportunity

By Landmark Hospitality is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other characteristic protected by applicable law.

Pay: $65,000.00 - $75,000.00 per year

Experience:

Administrative Assistant: 3 years (Required)

Ability to Commute:

Plainfield, NJ 07060 (Required)

Work Location: In person

Quick Apply

Refine Your Search

administrative assistant jobs in mountainside, nj

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