Midstream Operator Jobs in Alhambra, CA (NOW HIRING)

Job Title: Billing & Administrative Specialist Baton Rouge, LA | Full-Time About JH JH is a growing engineering consulting firm serving the upstream and midstream oil and gas industry. We partner with project owners to deliver engineering, procurement, project management, and field services with the responsiveness, accountability, and practical solutions our clients expect. Our success is built on strong client relationships, quality work, and people who take pride in doing their job well. We're looking for a Billing & Administrative Specialist for our headquarters in Baton Rouge. This position reports to Renee Arthurs, Manager of Business Administration.

Position Summary

The Billing & Administrative Specialist is responsible for supporting the day-to-day administrative and billing functions of the company. This role manages client invoicing, timesheet administration, and general office operations while providing administrative support to company leadership. The ideal candidate has an outgoing personality, is organized, detail-oriented, comfortable working with numbers, and enjoys interacting with both clients and coworkers. This position requires someone who can manage multiple priorities, communicate effectively, and maintain a high level of accuracy in a fast-paced environment.

Key Responsibilities

Prepare, review, and process client invoices using QuickBooks Online. Upload invoices and supporting documentation through OpenInvoice and other client billing portals. Upload invoices into JH's proprietary project management system. Coordinate with Project Managers to ensure invoices are accurate, complete, and submitted on time. Audit timesheets for accuracy based on project parameters. Review and enter field employee timesheets for timely billing. Follow up on missing or inaccurate timesheets and billing information. Maintain organized billing, payroll, and administrative records. Answer incoming calls and greet clients, vendors, and visitors. Assisting with the onboarding of new employees. Coordinate office supplies, mail, shipping, and general office operations. Provide administrative support to leadership and assist with special projects as needed.

Required Qualifications

Five years' experience in billing, office administration, accounting support, or a related role. Microsoft Office Suite with Advanced Excel skills. Proficient using QuickBooks Online. Exceptional organizational and attention to detail. Excellent written and verbal communication skills. Ability to manage multiple priorities and meet deadlines. Professional, dependable, and customer-service oriented. Experience with OpenInvoice or similar owner billing portals is preferred. Experience in an engineering, construction, industrial, or professional services environment is preferred.

Benefits

Summary

JH offers a competitive compensation and benefits package, including: Competitive salary commensurate with experience Health, dental, and vision insurance Company-paid life insurance 401(k) with 5:1 company match Paid holidays and paid time off Professional development opportunities Long-term career growth with a growing engineering consulting firm Flexible work schedules Company Description J H Operating Company offers engineers, designers, and project professionals the opportunity to work on real oil and gas facility projects with direct impact. JH operates as an owner-focused EPCm firm, meaning teams are involved early, make practical decisions, and see projects through from concept to construction and commissioning.

Employees at JH work in small, highly capable teams where individual contributions matter. The company emphasises technical competence, accountability, and transparency, giving team members visibility into how projects are planned, executed, and delivered. JH supports professional growth by exposing employees to multiple disciplines, project phases, and client interactions. The organization values efficiency, problem-solving, and ownership, creating an environment where people who want responsibility and hands-on experience can grow quickly. Company Description J H Operating Company offers engineers, designers, and project professionals the opportunity to work on rea