Cala Health
About Cala
At Cala, we’re working to free people from the burden of chronic disease. We began by creating the first non-invasive prescription therapy for hand tremor. After years of careful fine-tuning and improvements, we released Cala kIQ — our most sophisticated therapy yet. Our products have empowered thousands of people to get back to their lives with confidence and ease.
But we won’t stop there. Our pioneering technology can be applied across neurology, cardiology, and so much more. It’s all part of our mission to help people in their struggle with chronic disease. We’re only just getting started.
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Senior Mechanical Design Engineer
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About Cala
At Cala, we’re working to free people from the burden of chronic disease. We began by creating the first non-invasive prescription therapy for hand tremor. After years of careful fine-tuning and improvements, we released Cala kIQ — our most sophisticated therapy yet. Our products have empowered thousands of people to get back to their lives with confidence and ease.
But we won’t stop there. Our pioneering technology can be applied across neurology, cardiology, and so much more. It’s all part of our mission to help people in their struggle with chronic disease. We’re only just getting started.
Summary
At Cala we’re working to free people from the burden of chronic disease. We began by creating the first non-invasive prescription therapy for essential tremor. After years of careful fine-tuning and improvements, we released Cala kIQ - our most sophisticated therapy yet. Our products have empowered thousands of people to get back to their lives with confidence and ease.
As Senior Mechanical Design Engineer, you will be a key driver in the design, development, and testing of our revolutionary neuromodulation therapy devices. You will work on projects from early-stage prototyping all the way through manufacturing at scale, ensuring Cala’s products meet the highest standards of quality, reliability, and usability.
Specific Responsibilities
- Mechanical Design Leadership: Lead mechanical design and reviews, managing complex schedules and technical requirements throughout the development process.
- Prototyping & Testing: Design high-fidelity prototypes to facilitate usability studies and requirements characterization.
- Verification & Validation: Define comprehensive testing plans, develop custom test methods and fixtures, and lead final product mechanical verification activities.
- Lifecycle Management: Support design control documentation and lead engineering change orders (ECOs) to maintain product documentation and integrity.
- Manufacturing & Sustaining: Drive manufacturing transfers and partner with production teams to identify, propose, and implement continuous improvements.
- Quality Compliance: Diagnose, document, and support Cala’s Quality Management System, including any NCMRs and CAPAs related to mechanical design.
Skills and Experience
We are looking for a Senior Mechanical Design Engineer to support product development in a dynamic, fast-paced startup environment, exemplified by:
- Technical Expertise: 5+ years of experience in mechanical engineering, with a strong focus on electromechanical systems and early clinical study support.
- Practical Experience: Has taken a Class II medical device all the way from initial design through FDA 510k approval and transfer to manufacturing for commercialization. Experience with wearables or high-touch consumer electronics design a plus.
- Manufacturing Fluency: Design for Manufacturing (DFM) mindset, including knowledge of diverse processes including: plastic injection molding, silicone molding, machining, PCB fabrication/assembly, and 3D printing. Experience working with Contract Manufacturing partners to smoothly transfer development activity into production environment.
- Advanced CAD: Expert-level SolidWorks skills, specifically with complex surfacing, manufacturability, and tolerancing.
- Regulatory Knowledge: Familiarity with medical device standards, such as IEC 60601-1 (safety/essential performance) and ISO 10993 (biocompatibility).
- Quality & Rigor: Demonstrated experience with medical device phase-gate development, risk analysis, design control practices, and root cause analysis.
- Analytical Skills: GD&T, proficiency in statistical analysis (such as DOE) to inform design decisions and verification results.
- Education: BS in Mechanical Engineering or a related technical field.
Cala Health believes our success is based on diversity of people, teams and thinking. We offer all employees the tools, training and mentoring they need to succeed. Our selection process is driven by the key requirements for the role rather than bias or discrimination on the basis of a candidate’s sex, gender identity, age, marital status, veteran status, non-jobrelated disability/handicap or medical condition, family status, sexual orientation, religion, color, ethnicity, race or any other legally protected classification.
Ready to apply?
Apply to Cala Health
Mechanical Manufacturing Engineer
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About Cala
At Cala, we’re working to free people from the burden of chronic disease. We began by creating the first non-invasive prescription therapy for hand tremor. After years of careful fine-tuning and improvements, we released Cala kIQ — our most sophisticated therapy yet. Our products have empowered thousands of people to get back to their lives with confidence and ease.
But we won’t stop there. Our pioneering technology can be applied across neurology, cardiology, and so much more. It’s all part of our mission to help people in their struggle with chronic disease. We’re only just getting started.
The Opportunity
We are seeking a hands-on Mechanical Manufacturing Engineer to support Cala’s contract manufacturing partners and production operations. This role focuses on designing fixturing, improving assembly processes, and supporting production ramp and continuous improvement for our wearable medical devices. You will spend significant time working directly with contract manufacturers to observe builds, solve problems, and implement practical tooling and process improvements that increase quality, throughput, and operator ergonomics.
The compensation range for this role is market driven, with a salary range of $98,000 - $150,000. Additionally, we offer a robust benefits package. This offering is aligned with our overall compensation philosophy.
Applicants must be currently authorized to work in the United States on a full-time basis. Cala will not sponsor applicants for work visas.
A Day in the Life
- Support Cala’s contract manufacturers with day-to-day production issues, process improvements, and line optimization
- Design, prototype, implement and document assembly, test, and alignment fixtures
- Develop and improve manufacturing processes to increase yield, reduce cycle time, lower scrap, and create process transferability
- Partner closely with manufacturing teams at suppliers and at Cala to document and deploy new tooling and processes
- Identify opportunities for automation or semi-automation
- Support NPI and production ramp activities, including design transfer and validation
- Assist with process validation (IQ/OQ/PQ) and related documentation
- Collaborate with Quality, Operations, and Product Development to resolve manufacturing challenges
- Provide on-site build support during critical production phases
Skills and Experience
- BS or MS in Mechanical Engineering
- Strong SolidWorks experience and hands-on mechanical design background
- 5+ years in manufacturing or manufacturing engineering (medical device preferred)
- Experience working directly with contract manufacturers
- Proven ability to design and implement production fixtures and tooling
- Experience with small electromechanical assemblies and plastics (injection molding, bonding, sealing)
- Familiarity with regulated environments (ISO 13485 / FDA QSR)
- Strong problem-solving skills and comfort working on the factory floor
- Clear communicator who works well across engineering, quality, and operations teams
Travel Expectations
- This role requires regular travel to Cala’s contract manufacturing partners to support production, process improvements, and new product introductions. Expected travel is approximately 20–40% time, primarily to manufacturing sites in the greater Minneapolis / St. Paul Metropolitan Area / Medical Alley as well as headquarters in San Mateo, CA.
- Travel may increase temporarily during critical build phases, production ramps, or issue resolution periods.
- On-site presence is essential to observe manufacturing firsthand, collaborate with operators and manufacturing teams, and implement tooling and process improvements effectively.
Cala Health believes our success is based on diversity of people, teams and thinking. We offer all employees the tools, training and mentoring they need to succeed. Our selection process is driven by the key requirements for the role rather than bias or discrimination on the basis of a candidate’s sex, gender identity, age, marital status, veteran status, non-jobrelated disability/handicap or medical condition, family status, sexual orientation, religion, color, ethnicity, race or any other legally protected classification.
Ready to apply?
Apply to Cala Health
Senior Firmware Engineer
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About Cala
At Cala, we’re working to free people from the burden of chronic disease. We began by creating the first non-invasive prescription therapy for hand tremor. After years of careful fine-tuning and improvements, we released Cala kIQ — our most sophisticated therapy yet. Our products have empowered thousands of people to get back to their lives with confidence and ease.
But we won’t stop there. Our pioneering technology can be applied across neurology, cardiology, and so much more. It’s all part of our mission to help people in their struggle with chronic disease. We’re only just getting started.
The Opportunity
Cala is seeking a Senior Firmware Engineer to join our growing team. The role will work with an experienced product development team and be responsible for new design, development, testing, and driving continuous improvements for our revolutionary health products.
This is a versatile, hands-on role where adaptability and cross-functional collaboration are key. You will work on the full stack, from hardware support to the application itself, on low-power, wearable embedded systems. You will thrive if you enjoy wearing many hats, switching gears as needed between developing features for our commercial therapies, leading development on new product initiatives, and supporting the team as needed to push initiatives over the finish line, including writing and executing tests, supporting compliance testing, and owning firmware documentation.
The Senior Firmware Engineer will report to the Engineering Manager and will not have direct reports.
Location: Onsite Hybrid (San Mateo, CA)
The compensation range for this role is market driven, with a salary range of $125,000 - $175,000. Additionally, we offer a robust benefits package. This offering is aligned with our overall compensation philosophy.
Applicants must be currently authorized to work in the United States on a full-time basis. Cala will not sponsor applicants for work visas.
Specific Responsibilities:
- Full-Stack Firmware Design & Development: Drive firmware development for both new product initiatives and maintenance of existing commercial fleets, willing to jump into any part of the stack where the team needs help.
- Hardware Support: Provide development support for hardware and peripherals, including sensors, flash memory, and wireless communication.
- Design Controls & Compliance: Contribute to, and drive when necessary, the medical device design controls and documentation, viewing these as a critical component of product quality and safety (risk analysis, requirements, test plans/reports, etc.).
- Testing & Validation: Lead firmware testing efforts as required, support compliance testing, and perform joint hardware/FW debugging.
- Optimization: Implement data processing algorithms efficiently and optimize code for low-power applications.
- AI Integration & Process Improvement: Actively explore and implement new tools, including AI assisted development workflows to accelerate code generation, unit testing, and documentation workflow.
Skills and Experience
- BS/MS in Computer Science, Computer Engineering, Electrical Engineering, or related field.
- 5+ years working in firmware applications for wearables and ultra-low-power/small footprint design.
- 2+ years experience developing firmware within a phase-gated ISO13485 medical device quality system.
- Excellent C programming skills and proficiency in Python.
- Experience with bare metal firmware development on microcontrollers such as ARM Cortex M0, M3, M4. Experience developing within various RTOS’s such as Zephyr, Linux, freeRTOS, and comparable systems is a plus.
- Experience with relevant wireless technologies such as BLE, LTE, WiFi
- Comfort with hardware debugging and tools such as logic analyzers, power supplies, and oscilloscopes.
- Familiarity with AI-assisted development & testing tools.
- Excellent communication skills and comfort interfacing across cross-functional teams (product, regulatory, quality, manufacturing, etc.), with a willingness to dive into whatever is needed to support the team.
Cala Health believes our success is based on diversity of people, teams and thinking. We offer all employees the tools, training and mentoring they need to succeed. Our selection process is driven by the key requirements for the role rather than bias or discrimination on the basis of a candidate’s sex, gender identity, age, marital status, veteran status, non-jobrelated disability/handicap or medical condition, family status, sexual orientation, religion, color, ethnicity, race or any other legally protected classification.
Ready to apply?
Apply to Cala Health