Office Assistant / Asistente de OM

About JCC

John Christopher Construction is a growing general contractor in Orange County with four in-house divisions — Framing, Electrical, Plumbing, and Finish Carpentry — and an expanding Property Management division. We're looking for an organized, proactive Office Assistant to support our Office Manager and keep our front office, billing coordination, and compliance tracking running smoothly.

Front Office & Client Communication Answer incoming calls and route them appropriately — new leads, subcontractors/vendors, or existing clients. Take down complete information on new leads (contact info, job scope, plans) and get them entered correctly into our project management system (JobTread). Follow up with clients and keep them updated on their project status.

Billing & Financial Coordination Process incoming invoices — check for duplicates, upload for approval, and follow up with Project Managers on pending items. Run weekly reports (AR Aging, bills/expenses) and generate outgoing payment wires using our existing in-house tools. Track subcontractor compliance documents (W9s, COIs, licenses) and request insurance endorsements as needed. Note: this role supports the bookkeeping process with documentation and data confirmation — it does not include data entry or management of QuickBooks (QBO), which is handled by our bookkeeping team.

Payroll & Timesheet Support Make sure every employee's time is logged correctly each week, follow up on missing entries, and have payroll reports ready on schedule.

HR & Compliance Support Prepare new-hire paperwork packets and keep employee files (physical and digital) organized and current. Track upcoming renewal deadlines for insurance, business licenses, bonds, and vehicle registrations and flag them in advance (final renewals/approvals are handled by the Office Manager).

Document & Systems Organization Scan and file all physical documents into the right digital folders. Keep JobTread project records clean and current — plans, permits, inspection records, and vendor information.

General Support Provide flexible support to the Office Manager on quotes, estimates, and other assigned tasks as priorities shift.

What We're Looking For

• 1 + years of office/administrative experience — construction industry experience is a plus but not required
• Able to manage multiple phone calls, emails, and follow-ups at once while staying organized and on top of every detail
• Strong attention to detail — this role touches billing and compliance documents where accuracy matters
• Organized and able to keep multiple ongoing processes on track without close supervision
• Comfortable learning new software (we use JobTread, QuickBooks Online, Slack, Google Drive)
• Bilingual English/Spanish is not required, but is a plus
• Reliable and trustworthy — this role has visibility into sensitive company and financial information

What We Offer

• Competitive pay based on experience
• $25/month phone reimbursement
• Simple IRA retirement plan with company match (once eligibility requirements are met)

We're not just filling a position — we're building a team that takes pride in doing things right, keeps this company organized as it grows, and wants to grow along with it. If you're detail-oriented, dependable, and looking for a role where your work is actually seen and valued — not just a job — apply today.

How to Apply

To apply, respond to this posting with your resume. Applications without a resume will not be considered.

In your message, tell us:

• Your total years of administrative/office experience, and the type of work environment you've supported (construction, real estate, or similar is a plus)
• The specific systems/software you're comfortable with (JobTread, QuickBooks, Slack, Google Drive, or similar)
• Any experience handling billing, invoicing, payroll coordination, or compliance documentation
• Any experience supporting a team or managing multiple priorities independently
• What you're looking for in your next role and why JCC is the right fit
• Your availability to start

Interview Schedule: Interviews are held Tuesday, Wednesday, and Friday from 3:00–5:00 PM. First interviews are via Zoom; qualified candidates are invited for an in-person follow-up.

Join a fast-growing Orange County–based construction company known for delivering high-quality residential remodels, ADUs, and commercial tenant improvement projects.

At John Christopher Construction, we value teamwork, integrity, and craftsmanship. We are a company in an active growth and expansion phase, and we are looking for motivated professionals who take pride in their work and are eager to contribute ideas, processes, and leadership that support long-term success.