Principal Software Engineer (Fullstack)

Posted 2 Days Ago
Be an Early Applicant
Kirkland, WA, USA
In-Office
165K-247K Annually
Senior level
Software • Appliances
The Role
Architect and develop a next-generation radar software platform using asynchronous Rust backend services, APIs, real-time data models, and React front ends. Advance algorithms and prototypes into high-performance, observable production systems designed for resilience, offline operation, security, and intermittent connectivity. Improve CI/CD, testing, instrumentation, and service reliability while collaborating cross-functionally, mentoring engineers, and influencing technical direction.
Summary Generated by Built In
Radar Reinvented.

Echodyne offers the world’s first compact solid-state true beam-steering radar for a wide range of industries and applications. Our high-performance radars work in all weather and are designed for autonomous vehicles, uncrewed aircraft & drones, and security of borders, critical infrastructure, and smart cities. The company combines the patented technology of metamaterials with powerful software to create a radar sensor with unprecedented performance at commercial price points. Echodyne offers its radars to companies working in Automotive, Transportation, Critical Infrastructure Protection, Border Security, Smart Cities, Uncrewed Aircraft Systems (UAS), and Airspace Management including Urban Air Mobility (UTM).

Echodyne is seeking a Principal Software Engineer to join our fast-growing team. ROLE OVERVIEW

Echodyne is seeking a Principal Software Engineer to help build our next-generation radar software platform advancing mission-critical security for defense and automotive applications. You’ll play a key role in architecting robust solutions, collaborating across engineering, product, and UX, and ensuring our technology thrives in real-world, dynamic environments.  

RESPONSIBILITIES
  • Deliver core platform components: async (Tokio/Rust) backend services, well-defined APIs, and real-time data/event models. 
  • Partner closely with React/front-end teams to enable shared components, efficient state management, and system health visualizations. 
  • Advance prototypes to production: transform algorithms or domain logic into well-tested, high-performance endpoints with solid observability. 
  • Architect for resilience: address intermittent connectivity, graceful degradation, security hardening, and offline scenarios. 
  • Drive quality and velocity: refine CI/CD, improve testing (performance, contract/property), and establish clear instrumentation and SLO/error budgets. 
  • Mentor and influence: facilitate clear design narratives, code reviews, and integrate product and field feedback into the development lifecycle. 
REQUIRED SKILLS / EXPERIENCE
  • 7+ years building customer-facing, production-grade software systems. 
  • Modern full-stack expertise: React (or equivalent) front-ends and async backend services (Tokio/Rust or similar). 
  • Strong experience with modular architectures, documented API contracts, and robust service lifecycles. 
  • Designed for real-world constraints: field/defense/automotive deployments or similar high-stakes, performance-critical systems. 
  • Hands-on with Python and/or Rust and/or C/C++ for practical, scalable solutions. 
  • Skilled collaborator with product, UX, and technical experts; strong communication in cross-functional contexts. 
  • Track record mentoring peers and driving technical excellence without direct authority. 
  • Familiar with CI/CD practices, observability, and resilient system patterns. 
  • B.S. in Computer Science or equivalent industry experience 

Echodyne’s technology is export controlled by the U.S. Government and we must evaluate an applicant’s eligibility to handle export-controlled information or obtain required Government authorizations.  Therefore, we will ask you as part of the application process to identify whether you are a U.S. Citizen or green card holder, or have asylum/refugee status in the U.S. 

WHAT WE OFFERThis is an exempt role.
The expected annual salary range for this role is
$164,594$246,788 USD

If your skills generally align but not perfectly, please apply anyway. There may be another role that’s a great fit for you!

We offer competitive compensation and benefits to our full-time, US-based employees, including:

  • RSU (Restricted Stock Units)
  • Generous Benefits:
    • Fully-paid medical, dental, and vision insurance premiums for you 
      • Choice of PPO or HDHP/HSA
      • Virtual Care – 98Point6
      • Employee Assistance Program
  • Mental Health coverage through Springhealth & Talkspace (Premera)
  • Travel Assistance Insurance
  • Company Paid Life Insurance
  • Company Paid Short & Long Term Disability
  • Flexible PTO (exempt) / 15 days per year (non-exempt)
  • 401(k) match
  • Pet Insurance
  • Prepaid Legal Program
  • Commuter Benefits
  • Paid Company Holidays

All qualified applicants receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, age, status as a protected veteran or any other characteristic protected by law.



Skills Required

  • 7+ years building customer-facing, production-grade software systems
  • Modern full-stack expertise with React or equivalent front-end technology and asynchronous backend services using Tokio/Rust or similar
  • Strong experience with modular architectures, documented API contracts, and robust service lifecycles
  • Experience designing software for field, defense, automotive, or other high-stakes, performance-critical deployments
  • Hands-on experience with Python, Rust, and/or C/C++
  • Ability to collaborate with product, UX, and technical experts in cross-functional contexts
  • Experience mentoring peers and driving technical excellence without direct authority
  • Familiarity with CI/CD, observability, and resilient system patterns
  • B.S. in Computer Science or equivalent industry experience
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The Company
HQ: Kirkland, WA
125 Employees
Year Founded: 2014

What We Do

Echodyne designs and builds advanced radar solutions that unlock new capabilities for intelligent systems and autonomous machines and shatter price-performance barriers for sensor arrays. Our combination of patented metamaterials electronically scanned array (MESA®) technology with powerful software ultimately means significantly greater situational awareness that increases safety and saves lives. Our first radar is the size of a paperback book, weighs less than bowling pin, draws less power than a light bulb, yet outperforms every comparable radar on the market. We are just getting started. Echodyne delivers commercial radar solutions for end users and integrators in Government and Defense, Critical Infrastructure Protection, Uncrewed Aircraft Systems (UAS), and Autonomous Vehicle markets globally. The company is based in Kirkland, Washington and backed by Bill Gates, NEA, Madrona Venture Group, Baillie Gifford, Vulcan Capital, Vanedge Capital, and Irongrey among others. Discover more at echodyne.com.

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