Billing Clerk

**About Us** We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation for combining high-quality consulting services with customized energy solutions. Our integrated, single-source solutions include turnkey in-house capabilities with design assistance, as well as engineering applications and automated control systems. **Job Summary** Process service billings, contract billings and national billings. Provide accurate and timely billing according to the billing instructions, agreements, or quotes. **Essential Duties & Responsibilities** + Process Service Department billings. + National Accounts billing upload and tracking- backup. + Follow up with collection on some accounts + Assist with audits and provide backup support in all accounting areas as needed. + Assist Accounting with closing and on an ad hoc basis. **Qualifications** + Associate degree or higher in Accounting or Finance, preferred. + 5 years of working experience in billing/accounting. + Must have excellent oral and written communication skills. + Must be proficient with Excel. + Experience with invoice management portals a plus (Ariba, Maximo, Corrigo) **Equal Opportunity Employer** As a leading provider of mechanical and electrical construction, facilities services, and energy infrastructure, we offer employees a competitive salary and benefits package and we are always looking for individuals with the talent and skills required to contribute to our continued growth and success. Equal Opportunity Employer/Veterans/Disabled **Notice to Prospective Employees** Notice to prospective employees: There have been fraudulent postings and emails regarding job openings. EMCOR Group and its companieslist open positions here ( . Please check our available positions to confirm that a post or email is genuine. EMCOR Group and its companies do not reach out to individuals to help with marketing or other similar services. If an individual is contacted for services outside of EMCOR's normal application process - it is probably fraudulent. **Geographic Disclosure** **Benefits:** We arecommitted to providing employees a comprehensive benefits package which includes medical, dental, and vision coverage, along with health savings and flexible spending accounts, life insurance, disability, a 401(k) Savings Plan, College Coach and employee assistance program. \#Mesa \#LI-Mesa \#LI-HVACjobs \#LI-Onsite Email a Friend Email a Friend **Job Locations** _US-AZ-Phoenix_ **ID** _2025-5415_ **Company** _Mesa Energy Systems, Inc._ **Category** _Accounting/Finance_ **Position Type** _Full-Time_ **Location Type** _Onsite_ **Posted Date** _2 days ago_ _(11/17/2025 1:43 PM)_