Staff Software Engineer, Fullstack
QXO•Seattle, WA
•$180,000 - $250,000
About The Position
As a Staff Software Engineer on the QXO eCommerce team, you will lead the design, development, and operation of foundational commerce services. You will own complex systems from ideation through launch and drive long-term architectural evolution. You’ll collaborate across engineering, product, and design teams to build secure, reliable, and extensible services and user interfaces that serve millions of users across web and mobile platforms. This role is ideal for engineers who are highly technical, customer-obsessed, and comfortable working in fast-paced environments with high ambiguity and high ownership.
Requirements
- 5+ years of hands-on coding experience
- 3+ years building scalable, distributed systems using object-oriented programming languages (Java, Kotlin, Go, etc.)
- Experience with modern front-end technologies and frameworks such as React, Next.js, or TypeScript
- Strong knowledge of data structures, algorithms, system design, and concurrency
- Experience building and developing large-scale reliable distributed systems
- Experience designing, launching, and maintaining production systems in a cloud-native environment (e.g., GCP, AWS)
- Experience leading architectural designs and mentoring other engineers
- Bachelor’s degree in computer science, engineering, or equivalent
- Strong verbal and written communication skills
Nice To Haves
- Experience building commerce, checkout, identity, or personalization services at scale
- Experience building responsive, accessible, and performant UIs using front-end or mobile frameworks such as React Native
- Familiarity with AI/ML systems, including model inference pipelines, data labeling infrastructure, or real-time decisioning
- Experience with experimentation frameworks, recommendation engines, or search platforms
- Experience working with CI/CD pipelines, observability tools, and performance tuning
- Experience in Marketing or Ad Tech
Responsibilities
- Design, build, and operate eCommerce services
- Design and implement scalable, low-latency systems that meet performance and security requirements
- Build intuitive and performant user interfaces
- Contribute to shared design system and front-end architecture
- Collaborate with cross-functional teams to develop end-to-end solutions
- Write clean, efficient, and testable code
- Contribute to shared libraries and platform components
- Lead design, architecture and code reviews
- Continuously improve operational excellence and system reliability
- Mentor junior engineers and shape engineering best practices
Benefits
- 401(k) with employer match
- Medical, dental, and vision insurance
- PTO, company holidays, and parental leave
- Paid training and certifications
- Legal assistance and identity protection
- Pet insurance
- Employee assistance program (EAP)
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What This Job Offers
Job Type
Full-time
Career Level
Senior
