Associate Buyer, Procurement; Finance

Definium Therapeutics is a late-stage clinical biopharmaceutical company and our mission is to forge a new era of psychiatry by applying scientific rigor to psychedelics, with the goal of developing accessible treatments that unlock healing  lead product candidate, lysergide tartrate (our proprietary orally disintegrating tablet form of lysergide (LSD) D-tartrate), represents a highly differentiated, potential best‑in‑class opportunity for patients suffering from generalized anxiety, major depressive disorder, and posttraumatic stress disorder.

Our early stage pipeline includes DT402, the R‑enantiomer of MDMA and is under development to target the core symptoms of autism spectrum disorder (ASD), specifically addressing social communication challenges. Guided by the recognition that patients deserve more than better, Definium is relentlessly advancing a new generation of therapeutics intended to address the underlying causes of psychiatric and neurological disorders. By turning evidence into impact, Definium aims to change the trajectory of today's mental health care crisis and enable a healthier future.

Headquartered in New York, Definium Therapeutics trades on Nasdaq under the symbol DFTX.

Together we are moving psychiatry forward—beyond better, into a boundless future. Join us!

The Associate Buyer will support the Procure‑to‑Pay (P2P) lifecycle within the Finance organization, processing requisitions and purchase orders in Coupa while ensuring accuracy, compliance, and timely execution. This role requires strong collaboration with internal stakeholders and clear communication with external suppliers.

• Process purchase requisitions and convert them into purchase orders in Coupa
• Review requisitions for completeness, accuracy, and policy compliance
• Partner with internal stakeholders to resolve issues and ensure timely processing
• Communicate effectively with suppliers on purchase orders and issue resolution
• Track PO status and manage follow‑ups for delivery and invoicing
• Support supplier onboarding activities
• Maintain procurement records and ensure adherence to controls
• Support process improvement initiatives

• Bachelor's degree in Business, Finance, Supply Chain, or related field (or equivalent experience)
• 2+ years of procurement or accounts payable experience
• Experience with Coupa or similar P2P systems preferred
• Strong attention to detail and data accuracy
• Excellent communication skills
• Strong organizational and time management skills

Proficiency in Excel and business systems

The starting base pay range for this position is $ 80,000.00 |- $93,617.00 Compensation will be determined based on several factors including, but not limited to, skill set, years of experience, and the employee's geographic location.

Employees in this role may be entitled to additional compensation, including bonus and equity. Benefits information is listed on our Jobs Page.

The Company provides competitive benefits to employees including:

• 100% paid health benefits including Medical, Dental and Vision for you and your dependents
• 401(k) program with company match and vesting after the turn of the first month after your start date
• Flexible time off
• Generous parental leave and some fun fringe perks!