Cell Signaling Technology, Inc. (CST) is a worldwide leader in developing and commercializing antibodies, assays, and research tools. One of our most successful community initiatives is our Summer Internship Program. By employing and training students from our surrounding communities and colleges, CST is able to provide our summer interns with a positive hands-on experience in our Laboratory, where they can learn valuable skills from our knowledgeable CST Scientists. Many of the student interns are invited to continue their internship for consecutive years, and after completing their degrees, some return to CST as full-time employees. Our internship positions are paid positions ($17.00 - $18.00 per hour) and are full-time roles, Monday-Friday.

Responsibilities: 

CST offers hands-on laboratory internship opportunities in a variety of departments across the organization, including product development, production, and research. Responsibilities will vary depending upon the lab and may include, but are not limited to, the following:

• Cell culture
• Molecular biology responsibilities, such as cloning, PCR, peptide conjugation, etc.
• SDS-PAGE, western blot analysis, immunoprecipitation, immunofluorescence, etc.
• Preparation of media and buffers
• Validation of monoclonal antibodies for use in Immunohistochemistry or Flow Cytometry
• Antibody engineering, epitope mapping, purification and validation

Required Skills & Experience:

• Must be currently enrolled in an Undergraduate program in Biological or Chemistry related science. Graduate students are not eligible for this program
• Should possess a passion for technology, science, and learning
• Exhibit strong communication and collaborative skills

Application Instructions:

Applications will be accepted from December 17, 2025, to January 17, 2026

Applications will ONLY be accepted if they are submitted via the CST Career site and must include the following:

• A Resume 
• A link to a YouTube Video (60-second video introducing yourself and describing how an internship at CST will contribute to your future goals)
• 1 Letter of Recommendation
• Copy of an unofficial transcript

Returning interns should apply with an updated copy of their resume only.  No other application material is needed.

Graduate students are not eligible for this program.

Note:

Instructions on uploading videos to YouTube can be found by following this link.

If needed, Letters of Recommendation and Unofficial Transcripts may be emailed to internships@cellsignal.com. We will accept Letters of Recommendation and Unofficial Transcripts until January 27, 2026.

Returning interns are given priority but are not guaranteed a position.

Projected Program Dates:

May 26, 2026 - August 14, 2026

Cell Signaling Technology, Inc. is committed to providing equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, national origin, age, disability, genetic information, status as a veteran or as a member of the military or status in any group protected by applicable federal or state laws.