Make a global impact—join Repligen.
We’re united by a mission to inspire advances in bioprocessing as a preferred partner in the production of biologic drugs that improve human health worldwide. No matter your role or background, at Repligen, you will play a key part in shaping some of the most innovative and life-changing therapies in the world. We foster a culture of purpose, collaboration, and shared success—where every voice matters and every contribution drives progress. Join us!

Repligen is looking for a Mechanical Engineering Intern who has completed their second year of an accredited ME (or related) program and enjoys both CAD and hands-on engineering. You’ll support new product work through 3D modeling/detail drawings, concept development, and product testing. You’ll collaborate directly with senior engineers and contribute to meaningful project deliverables in an active development environment.

“This role is expected to model our Leadership Behaviors—Integrity & Compliance, Customer Focus, Collaboration, Courage, Team Empowerment, and Accountability & Results—in all aspects of work.”

Responsibilities:

CAD & Design Support

Create and revise 3D CAD models and detail drawings for components/sub-assemblies; support design iterations based on feedback and test results.
Assist with concept generation for new product features/modules, including basic layout, fit checks, and design-for-assembly considerations.

Testing & Analysis

Support product testing: help define test approach, set up experiments, collect data, and summarize findings.
Design/build simple test fixtures to enable repeatable testing and reliability checks.

Documentation & Collaboration

Prepare engineering documentation (drawings, assembly notes, test plans, and test reports) with attention to clarity and traceability.
Participate in project team meetings; communicate status, learnings, and next steps with the broader team.

Qualifications:

Completed 2nd year of a B.S. program in Mechanical Engineering or similar.
Hands-on experience with CAD (SolidWorks/AutoCAD or equivalent through coursework/projects).
Interest in experimentation, troubleshooting, and practical problem-solving
Strong analytical and organizational skills; able to document work clearly.
Ability to work effectively on a team and communicate progress.
Test planning and presenting test results preferred.
Comfortable in a hands-on lab/prototype environment preferred.

Our mission is to inspire advances in bioprocessing as a trusted partner in the production of biologic drugs that improve human health worldwide. Focused on cost and process efficiencies, we deliver innovative technologies and solutions that help set new standards in bioprocessing. The estimated hourly rate/salary range for this role, based in the United States of America is $24/Hr. -$25/Hr. Compensation decisions are dependent on several factors including, but not limited to an individual's qualifications, location, internal equity, and alignment with market data. Additionally, employees are eligible to participate in one of our variable cash programs (bonus or commission) and eligible roles may receive equity as part of the compensation package. We offer a wide range of benefits such as paid time off, health/dental/vision, retirement benefits and flexible spending accounts. All compensation and benefits information will be confirmed in writing at the time of offer.

FRAUD ALERT: Please take note that it has come to our attention that individuals purporting to work for Repligen are reaching out to prospective job applicants using fraudulent email addresses. All legitimate communications from Repligen will be sent from an individual with an email address ending in @repligen.com. If you have any concerns that a communication may be fraudulent and you would like to confirm whether it is, you may email legal@repligen.com and someone will respond. Repligen is a bioprocessing-focused life sciences company bringing over 40 years of expertise and innovation to our customers. We are inspiring advances in bioprocessing through the development and commercialization of high-value products and flexible solutions that address critical steps in the production of biologic drugs, principally monoclonal antibodies. Repligen headquarters is in Waltham, Massachusetts and our manufacturing facilities are located around the world. We market our products globally through a direct commercial organization in the U.S., Europe and Asia, as well as through strategic partners in select markets.

Mechanical Engineering Intern

Mechanical Engineering Intern

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