Staff Accountant (AP/AR) St. Charles, MO Job Description The Staff Accountant oversees the full accounts payable and accounts receivable cycles, ensuring accurate, timely, and compliant financial processing. This role maintains detailed financial records, supports internal and external audits, and works closely with vendors, customers, and internal teams to uphold strong financial controls and efficient accounting operations. Responsibilities + Perform the complete accounts payable cycle, ensuring all vouchers are accurately allocated to the correct expense accounts. + Reconcile all required documentation (invoices, receiving documents, purchase orders, and requisition forms) using the matching principle to maintain compliance with auditing procedures. + Create and update new and existing supplier records in the JDE accounting database. + Ensure all vouchers are paid and posted in accordance with company policies and established procedures. + Generate Positive Pay files and transmit them to the appropriate banking agencies to enhance security and help prevent fraud. + Process all employee expense reports in a timely and accurate manner. + Communicate and interact with suppliers and vendors to resolve inquiries, discrepancies, and payment issues. + Maintain organized filing and retention of all accounts payable documentation. + Perform the complete accounts receivable cycle, including the creation of sales invoices, credit memos, and debit memos in MIS. Essential Skills + Minimum of 2–3 years of related accounting experience in the manufacturing industry. + High school diploma or equivalent education. + Knowledge of basic accounting principles and standard accounting practices. + Hands-on experience with accounts payable, accounts receivable, and journal entries. + Proficiency in MS Office, with strong skills in Excel including formulas and pivot tables. + Experience working with JDE (JD Edwards) and AS400 systems, particularly in accounts payable and accounts receivable functions. Qualifications + Bachelor of Arts or Bachelor of Science degree in accounting, finance, or a related field is preferred. + Experience using MIS for sales invoicing and credit/debit memo creation. + Demonstrated ability to maintain organized filing systems for both accounts payable and accounts receivable documentation. + Experience supporting internal and external audits by preparing schedules and providing supporting documentation. + Comfort working with financial data in ERP environments and adapting to new systems and processes. Work Environment This is a fully on-site role, working five days per week in the office. The position offers a flexible start time and flexible lunch options, including the ability to work eight straight hours without a formal lunch break, as long as meals are taken at the desk and the employee remains on site. The work involves extensive use of MS Office (especially Excel), JDE (JD Edwards), AS400, and MIS systems in a professional office setting. The environment supports collaboration and independent work, with a culture reflected by long average employee tenure and comprehensive benefits. Job Type & Location This is a Contract to Hire position based out of Saint Charles, MO. Pay and Benefits The pay range for this position is $30.00 - $32.00/hr. Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave) Workplace Type This is a fully onsite position in Saint Charles,MO. Application Deadline This position is anticipated to close on May 9, 2026. About Aston Carter: Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe. Specialized in accounting, finance, human resources, talent acquisition, procurement, supply chain and select administrative professions, we extend the capabilities of industry-leading companies. We draw on our deep recruiting expertise and expansive network to meet the evolving needs of our clients and talent community with agility and excellence. With offices across the U.S., Canada, Asia Pacific and Europe, Aston Carter serves many of the Fortune 500. We are proud to be a ClearlyRated Best of Staffing® double diamond winner for both client and talent service. The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law. If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email astoncarteraccommodation@astoncarter.com (%20astoncarteraccommodation@astoncarter.com) for other accommodation options.