Staff Software Engineer, Fullstack

QXO is a leading distributor and installer of building products serving an $800 billion market. The companys mission is to modernize the building products industry through advanced technology and a best-in-class customer experience. QXO is North Americas largest distributor and installer of insulation the second-largest distributor of roofing products the second-largest publicly traded distributor of lumber and building materials and the largest distributor of waterproofing products. The company is targeting $50 billion in annual revenue within the decade through accretive acquisitions and organic growth. For more information visit .

As a Staff Software Engineer on the QXO eCommerce team you will lead the designdevelopment and operation of foundational commerce services. You will owncomplex systems from ideation through launch and drive long-term architecturalevolution. Youll 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.

• 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

Qualifications & Skills

• 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 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
• Bachelors degree in computer science engineering or equivalent
• Strong verbal and written communication skills

Preferred Qualifications:

• 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

• 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)

QXO is an Equal Opportunity Employer. We value diversity and do not discriminate on the basis of race color religion gender or sexual orientation national origin age disability or any other protected status.

Tocomply withPay Transparency laws employers mustdisclosean annual salary range. Actual offers depend on factors such as location experience skills and market data. This position may also offer variable compensation.