Scientist I, Bioassay

About Terrestrial Bio, Inc.

Terrestrial is transforming the delivery of next-generation therapies, starting with GLP-1. Terrestrial's proprietary Tacterra™ microarray patch (MAP) and applicator platform consists of a patch resembling an adhesive bandage, which is applied with a preloaded applicator and removed after a few minutes. Once applied, each patch delivers bioactive tips into the skin, which dissolve quickly into the body, rapidly releasing their therapeutic payload. Designed for self-administration, the temperature-stable Tacterra™ platform enables precise, controlled delivery of a wide range of therapeutics without medical sharps or refrigeration. Terrestrial has generated strong clinical and in-vivo proof of concept across multiple molecules. For more information, visit www.terrestrialbio.com.

Why this role

We are seeking a talented, collaborative, and highly motivated individual to join our core team of preclinical scientists and engineers contributing to the advancement of novel drug delivery modalities. This role is designed for a versatile researcher. You will play a key role in bioassay development to support preclinical research and GMP lot release testing, including the execution of functional assays to ensure biological performance of drug product. This is a unique opportunity to be part of an emerging company bringing innovative microneedle therapeutic delivery technology to the global market.

What You'll Do

• Develop and optimize cell-based functional assays to support preclinical research and GMP lot release testing for targets that may include proteins, antibodies, peptides, and RNA
• Execute routine functional testing to ensure biological integrity of drug product following GLP/GMP standards as needed, adhering to good documentation practices and ensuring compliant lab operations and workflows
• Analyze the data using suitable statistical methods and deliver interpretation for communication of results to the team
• Maintain accurate laboratory records, generate data summaries and compile reports to support regulatory filings
• Contribute collaboratively to study design, protocols, and report writing; independently navigate your own schedule to complete priority tasks and communicate findings to the team

How You'll Impact

• Contribute to translational studies that directly advance IND (Investigational New Drug) filings
• Challenging, technically fulfilling role at the intersection of engineering and biological efficacy
• This position offers tangible career growth opportunities

Qualifications

• Recent PhD with post doc in a relevant area or Master's degree with 4+ years relevant industry experience
• Significant experience with aseptic mammalian cell culture is required
• Solid understanding of experimental controls and data interpretation is required
• PhD or Master degree in Molecular and Cell Biology, Biochemistry, or a related life sciences field
• Experience with functional assays (e.g. ELISA) and analytical methods (e.g, protein quantification) is highly preferred
• Experience with animal models is preferred
• Strong organizational skills, attention to detail, and initiative appropriate for a fast-paced environment
• Strong verbal and communication skills with a commitment to working collaboratively within an interdisciplinary team

Compensation

The anticipated base salary range for this position is $109,000 – $123,000. Actual compensation will be determined based on a variety of factors including experience, qualifications, and internal equity.

Schedule & Location

Onsite expectations: The majority of our roles at Terrestrial are either onsite or hybrid, which allows us to meet both business and team needs. Candidates applying must be willing to be onsite 4-5 days per week. Location: Woburn, MA until relocation to a new, custom facility in Allston MA planned for Q4 of 2026.