Staff Software Engineer, Fullstack

QXO•Seattle, WA

7h•$150,000 - $275,000

About The Position

We’re looking for bold, entrepreneurial talent ready to help build something extraordinary — and reshape the future of building products distribution. QXO is a publicly traded company founded by Brad Jacobs with the goal of building the market-leading company in the building products distribution industry. On April 30, 2025, QXO completed its first acquisition: Beacon Building Products, a leading distributor in the sector. We are building a customer-focused, tech-enabled, and innovation-driven business that will scale rapidly through accretive M&A, organic growth, and greenfield expansion. Our strategy is rooted in delivering exceptional customer experiences, improving operational efficiency, and leveraging data, digital tools, and AI to modernize a historically under-digitized industry. 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
MS or Ph.D.

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

Annual performance bonus
Long term incentive (equity/stock)
401(k) with employer match
Medical, dental, and vision insurance
PTO, company holidays, and parental leave
Paid Time Off/Paid Sick Leave: Applicants can expect to accrue 15 days of paid time off during their first year (4.62 hours for every 80 hours worked) and increased accruals after five years of service.
Paid training and certifications
Legal assistance and identity protection
Pet insurance
Employee assistance program (EAP)