Description We are looking for an experienced Sr. Accountant to join our team in Houston, Texas, within the Energy/Natural Resources industry. This is a long-term contract position that requires a highly meticulous individual with expertise in financial management and accounting operations. The ideal candidate will contribute to efficient project execution by ensuring accurate invoice processing, vendor setup, and payment workflows. Responsibilities: • Process invoices promptly to support project timelines and ensure efficient financial operations. • Enter invoices and payment requests accurately into the payables workflow systems, including Ariba. • Review invoices to verify compliance with contracted rates and construction inspection requirements. • Collaborate with vendors and contract administrators to resolve billing discrepancies and ensure proper documentation. • Assist with setting up new vendors in the Ariba Vendor Maintenance System and address vendor-related changes. • Support project managers by receiving materials into Lawson and providing additional material-related assistance. • Offer ad-hoc support for accounting-related issues, including invoice discrepancies and payment concerns. • Conduct thorough audits and maintain accurate financial records to ensure compliance. • Facilitate the reconciliation of accounts payable and accounts receivable as needed. Requirements • Proven experience with accounting software systems, including ERP systems such as Ariba and Lawson. • Familiarity with accounts payable (AP) and accounts receivable (AR) processes. • Strong knowledge of auditing practices and balance sheet account management. • Ability to work with enterprise resource planning (ERP) systems. • Proficiency in financial services tools such as ADP and Concur. • Expertise in handling complex accounting functions and resolving discrepancies. • Effective communication skills to collaborate with vendors, contract administrators, and project managers. • Detail-oriented mindset with a focus on ensuring accuracy in financial operations. Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available including medical, vision, dental, life and disability insurance. Employees hired for our FTEP Program are also eligible to enroll in our company’s 401(k) or deferred compensation plan (if eligible). FTEP employees also earn paid time off for vacation, personal needs, and sick time and paid holidays. The amount of Choice Time Off (CTO) received varies based on years of service and is pro-rated based on the hours worked per week. A new FTEP employee earns up to 13 days of CTO and up to 10 paid holidays per calendar year. Learn more at roberthalfbenefits.com/Resources. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) .