Accounting Clerk III

Job Title: Senior Vendor Operations & Finance Specialist

Role Overview
We are seeking a detail-oriented and analytical Senior Vendor Operations & Finance Specialist to join our Global Data Operations team. This role is a critical link between our internal data collection platforms and our external vendor partners. You will be responsible for the end-to-end operational support of our invoicing lifecycle, ensuring that high-volume data collection and platform services are accurately tracked, validated, and processed. This is a "process-heavy" role that requires a mix of financial acumen, rigorous data validation, and professional cross-functional coordination.

Key Responsibilities
• Invoicing & Data Validation: Audit and validate complex vendor invoices against active Purchase Orders (POs) and Statements of Work (SOWs) to ensure 100% billing accuracy.
• Financial Operations: Manage the requisition process for data collection, vendor platforms, and operational needs. Track all financial movements using advanced Excel models and internal tracking systems.
• Vendor Coordination: Act as the primary point of contact between the organization and various global vendor partners to resolve billing discrepancies and streamline platform delivery.
• Metrics & Process Improvement: Perform ongoing analysis of financial metrics to identify bottlenecks. Propose and implement continuous process improvements to enhance operational efficiency.
• Stakeholder Management: Participate in regular strategic review meetings with internal leadership to report on work volume, vendor performance, and budget health.
• Workflow Prioritization: Manage daily, weekly, and monthly tasks within a fast-paced, high-volume environment, adapting to shifting priorities based on platform needs.

Qualifications & Requirements
• Education: Bachelor's degree in Finance, Business Administration, or a related field (equivalent experience accepted).
• Experience: 5-7 years of professional experience in Finance Operations, Vendor Management, or Procurement.
• Technical Mastery:
• Advanced Excel: Must be proficient in handling large datasets, pivot tables, and complex formulas for tracking and reconciliation.
• Finance Fundamentals: Strong understanding of basic finance principles (Requisitions, POs, SOWs, and accruals).
• Communication: Exceptional spoken and written communication skills, with a focus on professional email etiquette and vendor negotiation.
• Attributes: High numerical accuracy, strong organizational skills, and the ability to work independently with minimal oversight. Equal Opportunity Employer / Disabled / Protected Veterans

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For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.

We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.

Additional Skills

(none specified)


AllSTEM Representative Contact Info

Account Executive:


IN HOUSE


Branch Phone:


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Location:


Ontario, CA