Senior Software Engineer

QXO•Seattle, WA

4d•$138,000 - $235,000

About The Position

QXO is a distributor and installer of building products serving the North American market. Its mission is to modernize the building products industry through advanced technology and a best-in-class customer experience. The company is targeting $50 billion in annual revenue within the decade through acquisitions and organic growth. The Senior Software Engineer will design, develop, and maintain eCommerce services and user interfaces, building scalable, low-latency systems that meet performance and security goals. The role contributes to intuitive front-end experiences and end-to-end product features in collaboration with cross-functional teams. It also supports system reliability and operational excellence and contributes to shared libraries, platform components, and design systems. The position requires 2–5 years of professional software engineering experience, proficiency in an object-oriented programming language, experience with modern front-end technologies, and experience maintaining production systems in a cloud environment. A bachelor’s degree in Computer Science, Engineering, or equivalent practical experience is required. Preferred qualifications include commerce or personalization experience, accessible and high-performance UI development, AI/ML or data-driven services exposure, experimentation or recommendation systems, search technologies, and CI/CD, observability, or performance-tuning tools. The base pay range is $138,000–$235,000 per year. The position also offers an annual performance bonus, long-term equity incentive, 401(k) with employer match, medical, dental, and vision insurance, paid time off, company holidays, parental leave, paid training and certifications, legal assistance and identity protection, pet insurance, and an employee assistance program. Applicants can expect to accrue 15 days of paid time off during their first year, with increased accruals after five years of service. Actual offers depend on factors such as location, experience, skills, and market data; variable compensation may also be offered.

Requirements

2–5 years of professional software engineering experience.
Proficiency in one or more object-oriented programming languages, such as Java, Kotlin, or Go.
Experience with modern front-end technologies and frameworks such as React, Next.js, or TypeScript.
Solid understanding of data structures, algorithms, and software design principles.
Experience developing and maintaining production systems in a cloud environment such as AWS or GCP.
Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience.
Strong collaboration and communication skills.

Nice To Haves

Experience building commerce, checkout, or personalization systems.
Familiarity with responsive, accessible, and high-performance UI development.
Exposure to AI/ML systems or data-driven services.
Experience with experimentation frameworks, recommendation systems, or search technologies.
Knowledge of CI/CD, observability, and performance-tuning tools.

Responsibilities

Design, develop, and maintain eCommerce services and user interfaces.
Implement scalable, low-latency systems that meet performance and security goals.
Build intuitive and performant front-end experiences.
Collaborate with cross-functional teams to deliver end-to-end product features.
Write clean, efficient, and testable code.
Participate in design and code reviews.
Support continuous improvement of system reliability and operational excellence.
Contribute to shared libraries, platform components, and design systems.