Full-Time

Assistant Controller

Updated on 8/19/2026

Ambient Enterprises

Ambient Enterprises

201-500 employees

National HVAC design and installation consolidation

Compensation Overview

$125k - $135k/yr

Orange, CA, USA

In Person

Bachelor's

Category
Accounting (1)
Required Skills
NetSuite
QuickBooks
Forecasting
U.S. Generally Accepted Accounting Principles (GAAP)
Excel/Numbers/Sheets

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Requirements
  • A bachelor's degree in Accounting, Finance, or a related field is required.
  • At least 5 years of progressive accounting experience, including at least 2 years in a supervisory role, is required.
  • Strong knowledge of generally accepted accounting principles, accounting standards, and financial reporting is required.
  • Proficiency in accounting software and enterprise resource planning systems, such as QuickBooks, NetSuite, or Microsoft Dynamics, is required.
  • Advanced Microsoft Excel skills, including pivot tables and complex formulas, are required.
  • Experience in the construction industry, including familiarity with work-in-progress reporting, job costing, and lien waivers, is required.
  • Familiarity with tax compliance and regulatory filings is required.
  • Knowledge of financial planning and analysis is required.
  • A proven track record of implementing process improvements or automation initiatives is required.
  • The ability to manage multiple priorities and meet deadlines in a dynamic environment is required.
Responsibilities
  • Assist in preparing accurate and timely financial statements, reports, and analyses for internal and external stakeholders.
  • Oversee daily accounting activities, including accounts payable, accounts receivable, and general ledger maintenance.
  • Collaborate with the finance team to develop budgets, monitor variances, and provide detailed forecasts.
  • Ensure adherence to generally accepted accounting principles, company policies, and regulatory requirements.
  • Support audits by providing documentation and addressing inquiries.
  • Assist in developing, implementing, and maintaining effective internal controls to safeguard company assets and ensure data accuracy.
  • Perform and review monthly account reconciliations to ensure accuracy and completeness.
  • Support job costing processes by ensuring accurate allocation of costs to projects, tracking project profitability, and tracking percentage of completion.
  • Supervise and mentor accounting staff, providing guidance and training to support their professional growth.
  • Identify opportunities for process enhancements and automation to improve efficiency and accuracy in financial operations.
  • Provide strategic and operational support to the Controller and senior management as needed.
Desired Qualifications
  • A certified public accountant license is strongly preferred.

Ambient Enterprises coordinates a nationwide network of HVAC design and implementation experts. It centralizes non-core functions (accounting, IT, marketing) so regional specialists focus on delivering HVAC solutions for healthcare, data centers, and large commercial projects. Growth comes from acquisitions and private equity backing, expanding coast-to-coast to 24 states, including Aercon (May 2024) and Marshall & Wells (May 2025). The company combines local expertise with centralized administration to scale a national HVAC solutions network.

Company Size

201-500

Company Stage

N/A

Total Funding

N/A

Headquarters

New York City, New York

Founded

1986

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Simplify Jobs

Simplify's Take

What believers are saying

  • February 26, 2026 WRP Associates expanded Ambient's Midwest industrial HVAC footprint.
  • April 9, 2026 Integ deepened data-center exposure and recurring maintenance revenue.
  • LBC's January 2024 credit facility funded refinancing and further acquisitions.

What critics are saying

  • Rapid acquisitions from 2024 to 2026 strain systems, cultures, and leadership bandwidth.
  • Ambient depends on mission-critical customers; one failed project damages reputation and renewals.
  • A failed post-merger integration across 24 states breaks Ambient's roll-up thesis.

What makes Ambient Enterprises unique

  • Ambient combines HVAC, power protection, and service under one mission-critical platform.
  • ICG-backed buy-and-build since 1986 spans 24 states and regional specialists.
  • Integ Systems adds UPS and mechanical support for data centers and medical imaging.

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Benefits

Health Insurance

401(k) Retirement Plan

Paid Time Off

Flexible Work Hours

Remote Work Options

Stock Options

Wellness Program

Gym Membership

Phone/Internet Stipend

Training Programs

Growth & Insights and Company News

Headcount

6 month growth

22%

1 year growth

22%

2 year growth

22%
PR Newswire
Apr 9th, 2026
Osage Advisors Advises Integ Systems Corporation on Its Sale to Ambient

/PRNewswire/ -- Osage Advisors ("Osage"), a mergers and acquisitions advisory firm based in Connecticut, is pleased to announce the sale of its client, Integ...

The Bulletin
Apr 9th, 2026
Osage Advisors advises Integ Systems Corporation on its sale to Ambient.

Osage Advisors advises Integ Systems Corporation on its sale to Ambient. PR Newswire Today at 3:32am PDT CENTERBROOK, Conn., April 9, 2026 /PRNewswire/ - Osage Advisors ("Osage"), a mergers and acquisitions advisory firm based in Connecticut, is pleased to announce the sale of its client, Integ Systems Corporation ("Integ"), to Ambient Enterprises - a national group of HVAC design and implementation specialists serving industries such as healthcare, commercial, institutional, and mission-critical environments, including data centers. Osage Advisors acted as the exclusive M&A advisor to Integ for this transaction. Headquartered in Danbury, Connecticut, Integ designs, supplies, and services integrated power protection and mechanical support systems for data centers, communication, medical imaging, and industrial facilities. The Company provides uninterruptible power supply (UPS) equipment and related services to commercial customers nationwide, including preventative maintenance and ongoing service plans. Founded in 1996, Integ has built a strong reputation over nearly three decades as a high-quality, systems-oriented provider focused on delivering reliable, engineered solutions to its customers. The Company's integrated approach - combining equipment, system design, and ongoing service - has enabled it to establish long-term client relationships and a growing installed base that supports recurring revenue opportunities. Integ has successfully positioned itself to address a critical gap in the market by focusing on both the immediate and long-term needs of end users. Supported by a loyal and experienced team, strong supplier partnerships, and a diversified national customer base, the Company is well-positioned to capitalize on increasing demand for power protection solutions. Throughout the process, Osage Advisors partnered closely with Integ's leadership to position the Company effectively and engage with buyers who recognized the value of its technical capabilities, strong customer relationships, and long-term growth potential. "Integ is a highly regarded business with a long track record of delivering mission-critical solutions to its customers," said Keith Dee, President of Osage Advisors. "Ambient represents a strong strategic fit, and we are confident this partnership will support the Company's continued growth and success." About Osage Advisors Osage Advisors is a boutique mergers and acquisitions advisory firm that works with family-owned and closely held businesses generating $5 million or more in revenue that are seeking to sell their companies. Osage is committed to understanding each client's unique objectives and delivering outcomes that meet or exceed expectations. The firm has successfully completed transactions across a range of industries, including Tech-Enabled Services, Aerospace, Contract Manufacturing, Business Services, and Healthcare. Certain Members of Osage Advisors are Registered Representatives of and conduct securities transactions through StillPoint Capital, LLC, Tampa, FL. Osage and StillPoint are not affiliated. SOURCE Osage Advisors This is a paid placement. For further inquiries, please contact PR Newswire directly.

Citybiz
Mar 19th, 2025
HVAC Trailblazer Ambient Partners with Leading Michigan Rep Firm

Ambient Enterprises, a national leader in the commercial HVAC space, announced a strategic partnership with Airtech Equipment on Wednesday, the beginning of a long-term investment for Ambient in the Midwest region.

PR Newswire
Jan 10th, 2024
LBC Credit Partners Supports Growth Financing for Ambient Enterprises

/PRNewswire/ -- LBC Credit Partners ("LBC"), one of the leading providers of financing solutions to middle market companies, provided a senior secured credit...