Office Manager, Mount Pleasant

Job DescriptionJob Description
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Office Manager
Kellum Engineering
Mt. Pleasant, SC | Full-time
Bring Structure.
Create Momentum.
Keep the Business Moving.
Kellum Engineering is looking for a highly organized, proactive
Office Manager
who can take ownership of day-to-day operations and bring structure to a fast-moving engineering environment.
This is a critical role designed to free up leadership to focus on engineering by ensuring the administrative, financial, and operational backbone of the business runs smoothly and efficiently.
If you're someone who thrives in organized chaos, takes initiative, and isn't afraid to speak up and keep things on track-this role is for you.
Learn more about us: You'll Own
Proposals & Project Documentation
Assist in drafting and preparing client proposals
Support project close-out processes, including compiling close-out packages, preparing legal and municipality-required documents, and customizing boilerplate documentation with project-specific details
Financial & Administrative Operations
Manage invoicing and billing processes
Run payroll and maintain basic financial records
Oversee day-to-day office operations and administrative workflows
Permitting & Compliance
Coordinate and track permitting applications
Manage documentation and ensure compliance with local requirements
Follow up with municipalities and stakeholders as needed
Marketing & Online Presence
Support the development of Kellum Engineering's online presence
Manage light social media activity (e.g., posting weekly or biweekly updates)
Help showcase projects and company work in a simple, consistent way
What Success Looks Like
Leadership is no longer pulled into day-to-day administrative tasks
Projects move forward without delays due to missing documents or permits
Financial processes (invoicing, payroll) run consistently and accurately
The office operates in a structured, organized, and predictable way
Who You Are
Highly organized with strong attention to detail
Assertive and proactive-you're comfortable pushing back and keeping priorities on track
Able to manage multiple moving parts independently without constant direction
Comfortable working in a fast-paced, informal, and predominantly male environment while maintaining professionalism
A steady, reliable presence who brings order and follow-through to the team
What You Bring
3+ years
of experience in office management, operations, or administrative leadership
Experience in engineering, construction, architecture, or a related project-based industry strongly preferred
Proven ability to manage documents, deadlines, and multiple concurrent projects
Hands-on experience with invoicing, payroll, or basic bookkeeping functions
Familiarity with permitting, compliance, or municipality processes is a strong plus
Strong written communication skills, particularly in proposal writing and formal documentation
Experience managing business social media accounts (e.g., Instagram, Facebook), including posting and basic content coordination
Why Kellum Engineering?
This is an opportunity to step into a high-impact role where your ability to bring structure, accountability, and consistency will directly influence the success of the business.
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You won't just be managing an office-you'll be helping build the operational foundation that allows the company to grow.
Apply
If you're ready to take ownership, create order, and be a trusted right hand to leadership, we'd love to hear from you.
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