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Staff Python Software Engineer
Company Description
Butterfly Network, Inc. (NYSE: BFLY) is driving a digital revolution in ultrasound imaging and sensing with its proprietary Ultrasound-on-Chip™ semiconductor technology and software solutions. Butterfly first proved its technology in the point-of-care ultrasound market - commercializing the world's first single-probe, whole-body portable ultrasound device, which is now on its best-selling, third-generation: Butterfly iQ3™. The Company combines its advanced hardware with cloud software and AI, an enterprise workflow solution (Compass AI™) and other offerings to drive adoption of affordable, accessible ultrasound. Butterfly also enables third-party development of imaging AI apps through Butterfly Garden™, its software development kit and AI partnership initiative.
In addition to its medical imaging products, Butterfly Embedded™ is the Company's Ultrasound-on-Chip™ licensing and co-development program designed to enable a new wave of ultrasound-enabled technologies across non-competitive healthcare markets and beyond. Through Butterfly Embedded™, partners can build and scale novel ultrasound applications powered by Butterfly's proprietary semiconductor chip and software platform. Butterfly's innovations have been recognized by Prix Galien USA, Fierce 50, TIME's Best Inventions and Fast Company's World Changing Ideas, among other achievements.
We're a team of bold thinkers, problem-solvers, and innovators ready to shape the future of medical imaging. Let's build something extraordinary together!
Job Description
We are seeking a Staff Python Software Engineer to lead the design and development of a robust Python Software Development Kit (SDK) for controlling and interfacing with an ultrasound imaging device. This SDK will serve as a common platform used by internal development teams and external partners.
This is a senior individual contributor role for an engineer who is a fast learner, self-starter, and capable of working autonomously in a complex, hardware-adjacent environment. The ideal candidate thrives in ambiguous problem spaces, takes full ownership of technical outcomes, and drives solutions from concept through production and external adoption.
As part of our team, your core responsibilities will include, but not limited to:

• Serve as the technical owner and architect for a Python-based SDK controlling an ultrasound imaging device.
• Lead SDK design decisions with a focus on API clarity, usability, scalability, and long-term maintainability.
• Rapidly learn complex device behavior, imaging workflows, and system constraints to make informed design decisions.
• Work autonomously to define requirements, propose solutions, and execute with minimal supervision.
• Collaborate cross-functionally with firmware, hardware, imaging, systems, and product teams to define control and data interfaces.
• Design abstractions for device configuration, image acquisition, real-time data streaming, and system state management.
• Establish best practices for SDK architecture, testing strategy, documentation standards, and release processes.
• Ensure SDK robustness, performance, and reliability in hardware-integrated and real-time contexts.
• Drive SDK versioning, backward compatibility, deprecation policies, and partner-facing release strategy.
• Create and maintain high-quality developer documentation, examples, and reference implementations.
• Mentor and provide technical guidance to other engineers contributing to the SDK or adjacent platform components.
• Support internal teams and external partners with integration, debugging, and advanced use cases.

Qualifications
Baseline skills/experiences/attributes:

• Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience.
• Extensive professional experience with Python in production environments.
• Proven experience designing and owning SDKs, platforms, or shared libraries used by multiple teams or external users.
• Demonstrated ability to quickly learn complex systems involving hardware, firmware, or imaging pipelines.
• Experience interfacing Python with C/C++ or low-level device APIs.
• Familiarity with automatic cross-language wrapper generation (Djinni, SWIG).
• Strong architectural and system design skills with an emphasis on clean, intuitive APIs.
• Ability to work independently, prioritize effectively, and drive work forward with minimal direction.
• Experience with concurrency models in Python (threading, multiprocessing, async).
• Low level resource management and multithreading execution (GIL, DMA, serial, USB, etc.).
• Strong testing discipline, including unit, integration, and hardware-in-the-loop testing strategies.
• Excellent written and verbal communication skills, especially for technical documentation and cross-team alignment.

Ideally, you also have these skills/experiences/attributes (but it's ok if you don't!):

• Experience in medical devices, ultrasound systems, imaging platforms, or other regulated environments.
• Familiarity with real-time systems, data streaming, or high-throughput image pipelines.
• Experience defining SDK governance, versioning strategies, and long-term platform roadmaps.
• Knowledge of relevant standards (e.g., IEC 62304, ISO 13485, FDA software lifecycle expectations).
• Experience supporting external developers or partners using a published SDK.

Values
Innovation is what we do. Our values are how we make it happen. Butterflies are and believe in...
Patient-Centric Innovators: Our mission is THE mission.Empowered to Impact: Every voice matters.One Team, One Goal: Unity fuels progress.Growth Champions: We embrace challenges.Action-Oriented Achievers: We follow through, every time.
Location
Butterfly offers a hybrid work model for most positions, with team members spending two or more days a week in the office. While flexibility is key, we value in-person connections that spark creativity and teamwork. Our offices are designed for collaboration, with comfortable workspaces, stocked kitchens, and opportunities to connect with peers.
This is a hybrid position and will be based out of our office in either the Greater SF Bay Area or Burlington, MA.
Benefits and Perks

• Comprehensive health insurance, encompassing dental and vision coverage, is provided to all our employees. As a health-tech company, we prioritize the well-being of our teams. Additionally, employees have the option to buy up for enhanced health insurance coverage. We also contribute to Health Savings Account (HSA) accounts for all enrolled employees on an annual basis.
• Comprehensive Employee Assistance Program - we provide access to tools and resources to support your emotional health and day-to-day needs.
• 401k plan and match - we facilitate your retirement goals.
• Eligible employees will have the opportunity to participate in Employee Stock Purchase Plan (ESPP)
• Unlimited Paid Time Off + 10 Holiday Days a Year - recharge and come back ready to make an impact
• Parental Leave - we aim to provide our employees with time to bond with their growing family, along with additional support for primary caregivers to help transition back to work
• Competitive salaried compensation - we value our employees and show it
• Equity - we want every employee to be a stakeholder
• The opportunity to build a revolutionary healthcare product and save millions of lives!

Compensation
Our estimated salary for this role located in Burlington, MA is $170,000 + bonus + equity + benefits. Actual pay is determined by multiple factors such as skills, qualifications, experience and market demand.
Our estimated salary for this role located in the Greater SF Bay Area is $201,000 + bonus + equity + benefits. Actual pay is determined by multiple factors such as skills, qualifications, experience and market demand.
For this role, we are only considering candidates who are legally authorized to work in the United States and who do not now or in the future require sponsorship for employment visa status.
Butterfly Network does not accept agency resumes.
Butterfly Network is an E-Verify Company.
Butterfly Network is an equal opportunity employer. Regardless of race, traits associated with race, color, ancestry, religion, gender, national origin, sexual orientation, age, citizenship, marital status, disability or Veteran status. All your information will be kept confidential according to EEO guidelines.
Butterfly requires security adherence responsibilities from all employees. These include: adhering to all company security policies and procedures, utilize provided company assets securely, and complete all required security awareness training programs. Safeguarding company data and systems from unauthorized access, modification, or destruction, contributing to the overall security posture of the organization. Immediately reporting any suspected or actual security incidents, including phishing attempts, malware infections, or unauthorized access, following the established incident response procedures.
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