Senior Office Administrator

Rimkus; United States; Hybrid; USD 50,000 - 75,000; Full time

Benefits offered by this job

Private Healthcare Plan

Pension Plans

Leave Package

Work From Home

Training & Development

Job summary

Rimkus, a global engineering and technical consulting firm, seeks an experienced Administrative Professional to support project administration, financials, and general operations. You will input assignments, track budgets and change orders, and update SharePoint project folders to ensure accuracy and efficiency.

Responsibilities include processing drafts invoices, conducting monthly audits, reconciling time entries, posting payments, and providing backup support to staff.

Qualifications

• Bachelor's degree or higher preferred.
• 5+ years in an administrative role with supervisory experience suggested.
• Certified Administrative Professional designation preferred.
• Strong business writing and attention to detail.

Responsibilities

• Input assignments into company systems accurately and efficiently.
• Enter project information, budgets, and change orders; update SharePoint folders.
• Process invoices, conduct monthly audits, and oversee WIP/bill-on-account processes.
• Post payments, handle vendor invoices, and provide AR oversight.
• Provide backup support and coordinate office supplies as needed.

Skills

Interpersonal skills

Business writing

Communication

Confidentiality

MS Office

SharePoint

Education

Bachelor's degree or higher

Certified Administrative Professional (optional)

Tools

SharePoint

MS Word

Outlook

Excel

PowerPoint

Teams

Job description

Rimkus is a global engineering and technical consulting firm serving corporations, insurers, law firms, and government agencies. Across life sciences, forensic, construction, built environment, and product development work, the company helps clients solve complex technical challenges with practical expertise and a strong focus on quality, accuracy, and service.

Essential Job Functions

Project-Specific Administration

• Receives incoming assignments and inputs into company systems with accuracy and efficiency
• Enters project information, budgets, and change orders on an ongoing basis
• Updates SharePoint project folder permissions

Financials & Audits

• Processes draft invoices expeditiously to meet bi-weekly deadlines and client expectations
• Conducts monthly audits of bank statements, invoices, and payments received
• Manages WIP and Bill on Account processes
• Reconciles time entry between systems, reviewing/correcting project-related rates and time entries
• Handles monthly reconciliation of office/study expenses
• Posts payments to invoices in company system and provides AR oversight
• Uploads invoices to client-specific portals
• Submits vendor invoices for payment

General

• Supports facility coordinator as needed.
• Demonstrates professionalism in all client communications (via phone, email, or in-person).
• May oversee project-related item storage
• Provides backup support to other staff to accommodate PTO requests/overflow work
• May coordinate the purchasing of office supplies, equipment, etc
• Adheres to directives as outlined in the Administrative Systems and Procedures Manual
• Performs other duties as assigned

Required Education And Certifications

• Bachelor's degree or higher desired
• 5+ years' experience in an administrative capacity with supervisory experience preferred
• Certified Administrative Professional designation preferred

Requirements

Required Skills and Abilities

• Must possess ability to understand corporate operations and procedures
• Must be able to interact and communicate with individuals at all levels of the organization
• Must possess excellent business writing, editing, and proofreading skills, as work requires continual attention to detail, establishing priorities, and meeting deadlines
• Must have working knowledge of a variety of computer applications including MSWord, Outlook, Excel, PowerPoint, and Teams, as well as other technical software and database programs, such as SharePoint
• Must have ability to analyze and understand information and ideas presented in writing or communicated verbally
• Must be able to respond in writing or verbally to project-specific and general inquiries from management, peers, clients, and external vendors
• Must have strong interpersonal skills.
• Must have the ability to handle confidential information

Physical Demands, Overtime, And Travel Requirements

Work is performed primarily in a physical or remote office setting. Employee is frequently required to stand, walk, sit, bend, crouch, hear, and talk (must be able to speak and communicate clearly with employees). Employee may lift and/or move up to 25 pounds. Clear vision and depth perception are also necessary.

Regular working hours are 8 am to 5 pm, Monday through Friday, with one hour for lunch. There will be periods where overtime (or working outside of normal business hours) will be required, which the employee will need to comply with in order to meet the demands of the position.

Must have the ability to read, analyze, and understand information and ideas presented in writing. Must be able to respond, in writing or verbally, to project-specific and general inquiries from management, peers, subordinates, clients, and external vendors. Must be able to produce and disseminate correspondence (i.e. emails, letters, etc.) as requested.

Travel Requirements - Not expected for this position.

THIS JOB DESCRIPTION IS SUBJECT TO CHANGE AND DOES NOT CONSTITUTE A CONTRACT FOR EMPLOYMENT

OR A GUARANTEE OF CONTINUED EMPLOYMENT.

Why Join Rimkus?

At Rimkus, we're committed to building a workplace where people can do their best work. As part of our APAC HR team, you'll have real influence over how we grow, support, and engage our people across the region.

Join Rimkus and unlock your potential with endless opportunities for growth, learning, and making a difference!

At Rimkus, we value a diverse and inclusive workplace where all employees feel valued and respected. We are committed to creating a work environment that supports and celebrates the unique perspectives and experiences of all employees. If you share our commitment to diversity and inclusivity and are excited about joining a welcoming and supportive team, we encourage you to apply for our open positions. We are an equal-opportunity employer. Accommodation is available for applicants selected for an interview.

Benefits

• Private Healthcare Plan
• Pension Plans
• Life Assurance
• Leave Package
• Work From Home
• Training & Development
• Employee Assistance Programme - Counseling