Full-Time

Office Administrator / Project Support

SI Solutions

SI Solutions

1-10 employees

Specialized professional services for critical infrastructure

Compensation Overview

$27 - $33.80/hr

+ Performance-based bonus

Denver, CO, USA

In Person

Bachelor's

Category
Administrative & Executive Assistance (1)
Required Skills
NetSuite
ERP
Word/Pages/Docs
Excel/Numbers/Sheets
Microsoft Outlook
PowerPoint/Keynote/Slides

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Requirements
  • A high school diploma or equivalent is required.
  • A minimum of 3 years of administrative, office management, project coordination, or related experience is required.
  • Proficiency with Microsoft Office Suite, including Word, Excel, PowerPoint, Outlook, and Teams, is required.
  • Strong document formatting, data entry, and records management skills are required.
  • The ability to manage multiple priorities simultaneously is required.
  • The ability to exercise discretion and maintain confidentiality is required.
  • The ability to work independently with minimal supervision while contributing effectively within a team environment is required.
  • The duties require sitting and standing for extended periods; bending, crouching, and reaching high and low places; lifting and carrying materials and packages weighing up to 15 pounds; and frequent movement throughout the office.
Responsibilities
  • Serve as the primary point of contact for visitors, clients, vendors, and employees.
  • Answer and direct incoming telephone calls and inquiries.
  • Receive, sort, distribute, and process incoming and outgoing mail and deliveries.
  • Maintain office supply inventory and coordinate purchasing of office supplies and equipment.
  • Coordinate office maintenance requests, repairs, and vendor services.
  • Support office space planning, workstation setup, and onboarding logistics for new hires, employee transfers, and visitors.
  • Maintain organized office files, records, and administrative documentation.
  • Perform scanning, copying, filing, printing, and document preparation.
  • Coordinate onsite and offsite meetings, training sessions, and company events.
  • Reserve meeting rooms and arrange catering, audiovisual equipment, and meeting materials.
  • Prepare and distribute meeting communications, agendas, and logistics information.
  • Assist with visitor accommodation and meeting support as needed.
  • Create and maintain opportunities, quotes, and projects within company systems.
  • Support proposal development through document preparation, formatting, assembly, and quality review.
  • Assist technical staff with formatting reports, calculations, presentations, and client deliverables.
  • Maintain project documentation and records in accordance with company procedures.
  • Support project managers with project setup, tracking, and administrative activities.
  • Coordinate project closeout activities and ensure accurate record retention.
  • Assist with document management, filing, and records administration using company systems.
  • Process purchase requisitions and purchase orders, ensuring proper documentation and approvals.
  • Coordinate receipt and reconciliation of purchased items.
  • Support shipping and receiving activities for office, field, and client operations.
  • Track shipments and coordinate deliveries as required.
  • Partner with the Finance Department to ensure vendor invoices, purchase orders, and related documentation are accurately processed, approved, reconciled, and maintained in accordance with company procedures.
Desired Qualifications
  • An associate or bachelor's degree is preferred.
  • Experience supporting engineering, consulting, construction, or professional services organizations is preferred.
  • Experience with proposal preparation and technical document formatting is preferred.
  • Experience with NetSuite, DocuWare, or other enterprise resource planning or document management systems is preferred.
  • Experience supporting project management functions and project lifecycle administration is preferred.

SI Solutions provides professional and specialty services to owners of critical infrastructure assets. It works with sectors such as nuclear power, power generation, controls, utility and energy, critical infrastructure, and process industries across the US and worldwide. Its services help asset owners maintain and operate facilities through engineering, consulting, and field support, focusing on reliability, safety, and regulatory compliance. The company differentiates itself by its deep domain expertise in critical infrastructure and its global reach across multiple high-stakes industries, rather than selling hardware or generic consulting. Its goal is to be a leading provider of professional and specialty services for critical infrastructure asset owners.

Company Size

1-10

Company Stage

N/A

Total Funding

N/A

Headquarters

Charlotte, North Carolina

Founded

2023

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Simplify Jobs

Simplify's Take

What believers are saying

  • Macquarie agreed September 10, 2026 to buy SI, signaling sponsor confidence.
  • SI bought Radiological Solutions on February 2, 2026, deepening nuclear chemistry capabilities.
  • Integrity Specialists joined on September 2, 2025, expanding pipeline inspection reach.

What critics are saying

  • The transaction needs regulatory approval before Fall 2026 close; antitrust scrutiny delays timing.
  • SI's nuclear and pipeline work exposes it to customer failures, audits, and shutdowns.
  • A major nuclear-safety or compliance failure would freeze contracts and wreck SI's brand.

What makes SI Solutions unique

  • SI Solutions spans engineering, testing, software, and NDE across 16 locations and five labs.
  • It serves 330-plus critical-infrastructure clients in nuclear, gas power, pipeline, and petrochemicals.
  • Macquarie said SI's three 2026 add-ons created a broader digital platform.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

Remote Work Options

Paid Vacation

Paid Sick Leave

Parental Leave

401(k) Company Match

Company News

MarketScreener
Sep 10th, 2026
Macquarie Asset Management acquires majority stake in SI Solutions from MidOcean Partners

Macquarie Asset Management, alongside co-investors including UniSuper, has agreed to acquire a majority stake in SI Solutions from private equity firm MidOcean Partners. The transaction is expected to close in autumn 2026, pending regulatory approvals. SI Solutions provides structural integrity engineering, testing and software solutions to critical infrastructure owners and operators. Headquartered in Huntersville, North Carolina, the company operates from 16 locations and serves more than 330 clients across sectors including nuclear, gas power, pipeline and petrochemical. The acquisition follows Macquarie Asset Management's strategy of investing in businesses serving essential industrial and energy end-markets. This marks the third such transaction, following investments in Potters Industries and DynaGrid in 2025. Macquarie sees growth opportunities driven by structural tailwinds in power generation markets where SI specialises.

The Tidewater News
Sep 2nd, 2025
SI Solutions Expands Pipeline Inspection Reach Through Acquisition of Integrity Specialists, LLC

HUNTERSVILLE, N.C., Sept. 2, 2025 /PRNewswire/ - SI Solutions, LLC ("SIS") proudly announces the acquisition of Integrity Specialists, LLC ("Integrity Specialists"), a critical provider of advanced non-destructive examination (NDE) and inspection for the natural gas pipeline industry.

Business Wire
Aug 17th, 2024
MidOcean Partners Acquires SI Solutions, a Leading Provider of Engineering Solutions for Critical Infrastructure

MidOcean Partners (“MidOcean”), a premier New York-based alternative asset manager specializing in middle-market private equity, structured capital, a

PE Hub
Aug 15th, 2024
MidOcean Partners snaps up engineering firm Si Solutions

MidOcean Partners has acquired Si Solutions, a US-based provider of engineering solutions for critical infrastructure.

PR Newswire
Jan 4th, 2024
Si Solutions Expands Structural Engineering Expertise And Adds Controls Engineering Division With The Acquisition Of Sc Solutions, Inc.

CHARLOTTE, N.C., Jan. 4, 2024 /PRNewswire/ -- SI Solutions is pleased to announce the purchase of SC Solutions, Inc., a respected provider of innovative engineering solutions for the advanced process controls and structural engineering industries. Founded in 1987, SC Solutions has served its clients in Silicon Valley and beyond, expanding to Sacramento, CA, Portland, OR, and Atlanta, GA.SI Solutions, a privately held company, is a leading provider of mission-critical engineering, construction, testing, and maintenance services to the energy, process, and infrastructure markets. SI Solutions has over 500 employees and ten offices serving customers across the U.S. and internationally. SI's capabilities span multiple technical disciplines, with a focus on specialized engineering, instrumentation, electrical design and construction, and advanced nondestructive examination.This addition to SI Solutions grows our capabilities in supporting our critical infrastructure clients