Sr. Accounts Payable Specialist
Adarx Pharmaceuticals ‚Ä¢ San Diego, CA ‚Ä¢ Full Time ‚Ä¢ $71,000–$82,000 / year
Posted on Thu, Jul 16, 2026
ADARx Pharmaceuticals is seeking a detail-oriented and highly organized Senior Accounts Payable Specialist to join our Finance Department. This role will support and help oversee the full-cycle accounts payable process and help ensure vendor invoices are processed accurately, approved in accordance with Company policies, and paid timely. The ideal candidate is proactive, collaborative, and comfortable working in a fast-paced, deadline-driven environment.
The Senior Accounts Payable Specialist will play a key role in managing day-to-day accounts payable operations, including invoice review and entry, vendor onboarding and maintenance, vendor inquiries, and payment run support. This role will also assist with month-end close activities related to accounts payable, expense reports, including preparation of supporting schedules, reconciliations, and journal entries, as applicable, and will help identify opportunities to improve AP processes, controls, documentation, and system workflows.
Reporting Relationship:
The Senior Accounts Payable Specialist will report directly to the Associate Director, Accounting.
Essential Responsibilities:
- Develop and promote a workplace culture that values diversity of thought, promote integrity and create an atmosphere that supports coaching and fosters accountability.
- Perform and help oversee full-cycle accounts payable activities, including invoice review, coding, entry, approval routing, vendor setup, vendor maintenance, and payment support.
- Perform Form W-9 collection and Form 1099 reporting processes.
- Perform and help oversee expense reimbursements
- Review invoices and supporting documentation for completeness, accuracy, appropriate approvals, and compliance with Company policies and internal controls.
- Respond to vendor and internal inquiries in a timely and professional manner and help resolve invoice, payment, and account discrepancies.
- Support and help coordinate vendor payment runs, including preparation of supporting documentation, review of payment details, and coordination with internal stakeholders.
- Support month-end close activities, including preparation and review of accounts payable-related schedules, reconciliations, accrual support, and journal entries, as applicable.
- Maintain organized accounts payable records and assist with audit requests and other finance-related documentation needs.
- Partner cross-functionally with internal business owners to promote timely invoice processing and adherence to purchasing and approval procedures.
- Serve as a primary point of contact for AP-related questions, vendor issues, invoice discrepancies, and process-related escalations.
- Identify and recommend improvements to AP processes, internal controls, documentation, and system workflows to support scale and operational efficiency.
- Maintain all appropriate corporate standards for facility safety.
- Perform other duties as assigned.
Essential Physical Characteristics:
Reasonable accommodation(s) may be made to enable qualified individuals with disabilities to perform the essential functions of a job, on a case-by-case basis.
On-Site Protocol:
Physical presence at the ADARx Pharmaceuticals worksite is a necessary job function of this role, which the Company deems critical to collaboration, innovation, productivity, employee well-being and engagement, and it enhances the Company culture.
Qualifications:
- 4+ years of accounts payable experience, preferably in a corporate accounting or finance environment.
- High school diploma required; Associate degree or equivalent coursework in accounting, finance, or business preferred.
- Demonstrated knowledge of end-to-end accounts payable processes and related internal controls, required.
- Ability to exercise sound judgment, identify issues, escalate matters appropriately, and independently follow through on open items.
- Experience working with financial accounting systems; NetSuite experience or equivalent ERP system; Concur experience preferred.
- Proficiency with Microsoft Office Suite, particularly Excel, and Adobe Acrobat Pro.
- Strong attention to detail, organizational skills, and ability to manage competing priorities while meeting deadlines.
- Excellent interpersonal and communication skills, with the ability to work effectively with internal teams and external vendors.
Preferred Qualifications:
- Experience preparing accounts payable, cash, or accrual-related journal entries and account reconciliations.
- Experience in the biotechnology, pharmaceutical, life sciences, or other regulated industry.
- General understanding of U.S. GAAP and month-end close processes.
Key Attributes:
- Highly organized, accurate, and detail-oriented.
- Proactive and resourceful, with strong problem-solving skills.
- Able to manage multiple priorities and meet deadlines in a dynamic environment.
- Collaborative and professional, with a customer-service mindset when working with vendors and internal stakeholders.
- Adaptable and comfortable working in a growing, fast-paced organization.
Compensation:
- This is a full-time position, Monday-Friday, occasional overtime.
- Pay is commensurate with experience.
- Equity-based compensation
- Performance-based bonuses
- 401(k) with Company Match
- Medical, Dental, Vision
- Flexible Spending Account
- Life Insurance
- Employee Assistance Program
- Employee Discounts
- Gym Membership
Work Authorization:
- United States (Required)
- Background Check
- As a condition of employment, you must successfully complete all post-offer, pre-employment requirements, including but not limited to a background check.
ADARx Pharmaceuticals is an EEO employer committed to an exciting, diverse, and enriching work environment. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws.
Company Overview:
ADARx Pharmaceuticals, Inc., (the “Company” or “ADARx”) located in San Diego, is a clinical stage biotechnology company dedicated to transforming cutting-edge science into next-generation RNA therapeutics to treat a broad spectrum of diseases. Our goal is to control the expression of specific disease drivers with highly selective RNA targeted therapies, delivering life-changing treatments for patients with urgent unmet medical needs.
Disclosure Statement:
- The above statements are intended to describe the general nature and level of work being performed by employees assigned to this classification. They are not intended to be construed as an exhaustive list of all responsibilities, duties and skills required of employees assigned to this position.
- Any data processed in connection with role applications will be treated in accordance with applicable data privacy policies and regulations.
- The range provided is based on what we believe is a reasonable estimate for the base salary pay range for this job at the time of posting. This role is eligible for an annual target bonus and annual equity awards. Some roles may also be eligible for overtime pay, in accordance with federal and state requirements. Actual base salary pay will be based on a number of factors, including skills, competencies, type and length of experience within the industry, and other job-related factors permitted by law.
- Total Compensation includes base salary; benefits: medical, vision, and dental insurance; life insurance; 401(k) matching program; paid time off; paid holidays; Employee Assistance Program; and other employee benefits. This role may also be eligible for short-term or long-term incentive compensation, including but not limited to cash bonuses.
- Following a conditional offer of employment, satisfactory completion of a background check (including criminal records check) is required prior to beginning employment. Any offer of employment may be rescinded if the background check reveals disqualifying information, and/or it is discovered that the candidate knowingly withheld or falsified information. Failure to satisfactorily complete the background check may affect the continued employment of a current NAI employee who was conditionally offered the position.