Calyxo, Inc. is a medical device company headquartered in Pleasanton, California, USA. The company was founded in 2016 to address the profound need for improved kidney stone treatment. Kidney stone disease is a common, painful condition that consumes vast amounts of healthcare resources each year. Our team is led by executives and investors with a proven track record of commercializing paradigm-shifting devices to meet unmet needs within urology.

Are you ready to change the future of kidney stone treatment? We are seeking high achievers who want to be part of a dynamic team working in a fun, diverse atmosphere.

The Advanced Development team is responsible for early-stage development and risk retirement of high risk and high reward design concepts. This team will develop proven ideas that work into the product development pipeline. The team works with a hands-on fail-fast approach, iterating through various ideas to develop solutions that have a significant impact on kidney stone management.

In This Role, You Will:

Develop and evaluate mechanical and/or electro-mechanical concepts for improved kidney stone treatment
Improve benchtop simulations by researching and evaluating clinical use conditions, patient anatomical challenges and current kidney stone treatments
Use SolidWorks, rapid prototyping and basic prototyping to create models, test fixtures and device improvements
Collaborate with cross functional teams to create solutions that best meets product and/or user needs
Perform other duties as required.

Who You Will Report To:

Sr. R&D Engineer, Advanced Development

Requirements:

Education: Recent graduate or current junior/senior pursuing a bachelor’s degree in Mechanical or Biomedical Engineering or related field 
Work location: Pleasanton, CA 
Travel: Minimal (~5%) 
Full time employment
Proficiency in a 3-D modeling software (Solidworks Preferred) and Microsoft Office 
Strong attention to detail 
Excellent verbal and written communication skills 
Eagerness to learn and accept challenges 
Ability to handle multiple projects and responsibilities and adapt to change 
Ability to solve problems and analyze data 
Ability to think and work independently and in teams 
Compliance with relevant county, state, and Federal rules regarding vaccinations.

What We Offer:

At Calyxo, you will be part of a knowledgeable, high-achieving, experienced and fun team. You will work in a diverse work environment with experienced, proven leaders and have an opportunity to shape our company culture. You will experience constant learning and dynamic challenges to help you grow and be the best version of yourself.

We also offer a compensation plan as follows:

Competitive hourly rate of $28/hr (undergrad) - $30.00/hr (graduate students)

Application close date: March 9, 2026

Calyxo is deeply committed to fostering an environment where diversity and inclusion are not only valued but also prioritized. We believe a diverse and inclusive community empowers us to act courageously, care deeply, and dream boldly to impact people in big ways. Diverse viewpoints bring diverse capabilities, which strengthen our focus and fuel our growth.

Calyxo is proud to be an equal opportunity employer, seeking to create a welcoming and diverse environment. All applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status or any other applicable legally protected characteristics

Legal authorization to work in the United States is required. In compliance with federal law, all persons hired will be required to verify their identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.

Disclaimer:

At Calyxo, we prioritize a transparent and structured interview process to ensure the best fit for both our candidates and our team. Please be aware of the following:

Structured Interview Process: Our hiring process includes multiple stages of interviews where you will have the opportunity to communicate directly with Calyxo employees. This ensures that you gain a comprehensive understanding of the role and our company culture.
Verification of Identity: We do not extend job offers without first meeting candidates, either virtually or in person. This step is crucial to maintain the integrity of our hiring process and to ensure mutual alignment.
Beware of Scams: Calyxo will never request sensitive personal information, such as your full name, address, phone number, or identification documents, via email or online forms before an official interview. Calyxo representatives will always contact you using an email format of [email protected]. If you receive a request for information from any other domain, please contact us directly at [email protected] to verify the legitimacy of the communication.

We appreciate your interest in joining Calyxo and look forward to getting to know you through our official channels.

R&D Engineer, Advanced Development Intern - Pleasanton, CA

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