Senior Human Resources (HR) Coordinator

Remote, USA
Posted Jun 14, 2026
Full-time

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 at scale.  

Our 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!

Reporting to the Senior Manager, Human Resources, we are seeking a highly organized and motivated Senior HR Coordinator to join our growing organization.  This role provides overall coordination and program support to the HR team. This individual plays a key part in delivering seamless employee experience across the company. This is a hands-on role with broad exposure across the full employee lifecycle. Responsibilities include supporting HR operations and TA processes and programs such as generating and managing offer letters, managing job postings, general administrative duties (meeting support, expenses, purchases orders and invoicing) as well as preparing confidential documentation and maintaining electronic and manual files.

Key responsibilities include but not limited to the following:

Manage new hire onboarding by sending welcome emails, adding hires to the HRIS, assigning onboarding tasks and forms, coordinating first-week orientation, and maintaining the new hire tracker

Support Talent Acquisition processes by partnering with recruiters to post jobs, confirm position details, format job descriptions, and audit descriptions for compliance and consistency

Assist with offer letters and ensure all details are accurate and consistent

Manage external job postings and the pre-employment processes by initiating and monitoring background checks, reviewing results, and tracking pre-boarding requirements and activities

Deliver a positive, consistent candidate experience at every touchpoint

Support departmental administrative needs, including travel, expense reporting, meeting coordination (individual and group meetings), swag inventory, documentation requests, and electronic filing

Support HR budget processes by setting up vendors, creating purchase orders, tracking expenses, and coordinating with Finance to ensure timely invoice processing and accurate reporting

Support HR related trainings and workshops, such as education sessions for managers, leadership coffee chats, and new hire sessions, by coordinating logistics, preparing materials, tracking attendance, administering surveys, enabling remote participation, and assisting with event planning for conferences and job fairs

Qualifications:

A bachelor's degree is required. Degree in Human Resources or related discipline in preferred

Minimum of 2 years of related experience required

Experience in the Pharmaceutical / Biotech industry preferred

Working understanding of human resource principles, practices, and procedures 

Proficient with Microsoft Office Suite required

Previous experience with BambooHR and ADP preferred

Familiarity with Applicant Tracking Systems and resume databases

Excellent communication skills, organizational skills, customer service skills

Must be able to handle information of a sensitive and confidential nature

The starting base pay range for this position is $73,950.00 - $87,848.00 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!

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