Staff Software Engineer, Full-Stack

QXO•Seattle, WA

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 redefining digital commerce. Our mission is to deliver seamless,intelligent, and scalable eCommerce experiences through next-generation softwaresystems. Our engineering teams build distributed platforms that power criticalservices such as customer identity, product discovery, checkout, and personalization.If you thrive in ambiguous environments, care deeply about performance andscalability, and are driven by customer impact — we want you on our team. As a Staff Software Engineer on the QXO eCommerce team, you will lead the design,development, and operation of foundational commerce services. You will owncomplex systems from ideation through launch and drive long-term architecturalevolution. You’ll collaborate across engineering, product, and design teams to buildsecure, reliable, and extensible services and user interfaces that serve millions of usersacross web and mobile platforms. This role is ideal for engineers who are highly technical, customer-obsessed, andcomfortable working in fast-paced environments with high ambiguity and highownership.

Requirements

5+ years of hands-on coding experience
3+ years building scalable, distributed systems using object-orientedprogramming 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, andconcurrency
Experience building and developing large-scale reliable distributed systems.
Experience designing, launching, and maintaining production systems in acloud-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 mobileframeworks such as React Native
Familiarity with AI/ML systems, including model inference pipelines, data labelinginfrastructure, 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 Tec

Responsibilities

Design, build, and operate eCommerce services
Design and implement scalable, low-latency systems that meet performanceand 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