Senior Accounts Payable Specialist in Longmont, Colorado at Stored Energy Systems

Who We Are

Stored Energy Systems (SENS) is an award-winning manufacturer of premium quality power conversion products located in Longmont, CO. In business for over 50 years, SENS is the market leader with a proven track record of providing highly reliable battery chargers, DC power systems, and related products to industrial markets. For more information on our company please see our web site at www.sens-usa.com.

View the SENS Product Catalog

Summary

The Senior Accounts Payable Specialist is responsible for managing the full accounts payable cycle, ensuring accurate and timely processing of invoices, payments, reconciliations, and vendor records. This role serves as a key resource for AP operations, supports month-end close, resolves complex discrepancies, and helps maintain strong internal controls and vendor relationships.

Responsibilities

• Manage the end-to-end accounts payable process, including invoice receipt, coding, approval, and payment processing.
• Review invoices for accuracy, proper authorization, supporting documentation, and compliance with company policies.
• Perform three-way matching of purchase orders, receipts, and invoices.
• Process high-volume invoices accurately and within established payment deadlines.
• Prepare and process ACH, wire, check, and other vendor payments.
• Reconcile vendor statements and resolve discrepancies in a timely manner.
• Research and resolve invoice, payment, and account issues with vendors and internal departments.
• Maintain accurate vendor master data and assist with vendor onboarding and updates.
• Prepare AP-related account reconciliations and support monthly, quarterly, and year-end close activities.
• Monitor AP aging and identify outstanding invoices, duplicate payments, and potential payment issues.
• Assist with 1099 reporting and other year-end AP requirements.
• Support internal and external audits by providing documentation and account information.
• Maintain organized and accurate electronic and physical AP records.
• Identify opportunities to improve AP processes, strengthen controls, and increase efficiency.
• Provide guidance and support to junior AP staff and assist with training as needed.
• Perform other accounting and administrative duties as assigned.

Required Qualifications

• 4+ years of accounts payable or relevant accounting experience.
• Experience owning the responsibility for full-cycle accounts payable processes.
• Experience processing high-volume AP transactions within ERP/accounting systems such as SAP, Oracle, NetSuite, Microsoft Dynamics, or similar platforms.
• Strong understanding of accounting principles and internal controls.
• Excellent attention to detail and organizational skills.
• Ability to manage multiple priorities and meet strict deadlines.
• Strong analytical, problem-solving, and communication skills.
• Ability to work independently and collaborate effectively with cross-functional teams.
• Experience with expense management, purchasing, or procurement systems.
• Experience supporting month-end and year-end close.

Preferred Qualifications

• Experience in a multi-entity accounting environment.
• Associate's or Bachelor's degree in Accounting, Finance, or a related field.
• Proficiency in Microsoft Excel, including basic functions and data reconciliations.
• Experience mentoring or leading AP team members.

Closing Date: October 9th. While we anticipate keeping this position open through this date, the posting may be extended or closed earlier depending on applicant volume and hiring needs.

Location: This role is located on-site in Longmont, CO.

Base Compensation: The expected base compensation range is $27 - $36 per hour.

Bonus: This position is eligible for an annual bonus based on individual and company performance.

Onsite Perks

Benefits

At SENS, our culture is rooted in a set of core values that reflect who we are and how we work. In a recent 2025 poll, our employees identified the values that best define us: “Innovative”, “Respectful”, “Inviting”, “Flexible”, “Collaborative”, and “Growth Driven”. Our team describes us as a dynamic, forward-thinking company where everyone has the opportunity to thrive.

We pride ourselves on being an equal opportunity employer, fully dedicated to fostering inclusion and diversity. We welcome all applicants, regardless of race, color, religion, sex, sexual orientation, gender identity, genetic information, national origin, age, disability, veteran status, or any other legally protected characteristic.

We hope you're interested in making a difference with us. Even if you don't feel that you meet every qualification listed in this job description, we still encourage you to apply.