Principal Engineer, Physical Implementation

Butterfly Network

3h•$200,000 - $240,000•Hybrid

About The Position

At Butterfly Network, we’re leading a digital revolution in medical imaging, transforming an industry that has long relied on bulky, analog systems. With our proprietary Ultrasound-on-Chip™ technology, we’re democratizing healthcare by shifting ultrasound from the expensive, stationary systems of the past to the connected, mobile, and software-enabled platforms of today. In 2018, we launched the world’s first handheld, whole-body ultrasound, Butterfly iQ – followed by iQ+ in 2020 and iQ3 in 2024, each more powerful than the last. Our innovation doesn’t stop at hardware. Butterfly combines our advanced device with intelligent software, AI, services, and education to drive adoption of affordable, accessible imaging. Our technology is proving to help clinicians, clinics, and hospitals enhance care, cut costs, and expand imaging access. We’ve been recognized by Prix Galien USA, Fierce 50, TIME’s Best Inventions, Fast Company’s World Changing Ideas, among other awards. 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!

Requirements

BS/MS/PhD in EE/CE or equivalent physical design experience.
8–12+ years (typical Principal level) in physical design (PD) with deep knowledge of industry standards and practices in Physical Design, including physically aware synthesis, Floor-planning, DFT insertion, and Place & Route.
Experience developing and implementing Power-grids and Clock specifications.
Strong understanding of Physical construction, Integration and Physical Verification.
Knowledge of SoC Architecture and HDL languages (Verilog) to interface with logic design team for timing fixes.
Power user of industry standard Physical Design & Synthesis tools such as Genus, Innovus, Tempus.
Hands-on expertise in DRC/LVS/DFM closure, including hierarchical LVS debugging, connectivity issues (opens/shorts), and waiver governance.
Experience with reliability/power integrity signoff (EM/IR fundamentals).
Proven ability to drive end-to-end signoff, including methodology definition, closure execution, and tapeout release documentation.
Strong scripting skills (Python, Tcl, or shell) for reproducible flows and metrics dashboards.
Demonstrated ability to work cross-functionally with front-end designers and IP owners to drive closure and support block-to-top signoff integration.

Nice To Haves

Advanced node experience (16nm or smaller) and associated DFM complexity.
Experience in regulated / high-reliability products where traceability and signoff rigor are critical.
Experience with multi-voltage, power-gated, and power-retention designs.
Practical knowledge of hierarchical design, top-down budgeting, and physical convergence.
Experience integrating internal/external IP and defining requirements in the physical domain.
Experience interfacing with foundry/PDK vendors regarding rule updates and signoff collateral alignment.

Benefits

Comprehensive health insurance, encompassing dental and vision coverage, is provided to all our employees.
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!