Staff Software Engineer, Backend

QXO

• $150K — $275K *
Enterprise Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of hands-on coding experience
  • 3+ years experience with scalable, distributed systems using OOP languages (Java, Kotlin, Go)
  • Modern front-end technology/proficiency in React, Next.js, or TypeScript
  • Strong understanding of data structures, algorithms, and system design
  • Experience with cloud-native environments (GCP, AWS)
  • Demonstrated leadership in architectural design and mentoring engineers
  • Bachelor's degree in computer science, engineering, or equivalent

Responsibilities

  • Design, build, and operate eCommerce services
  • Implement scalable, low-latency systems for performance and security
  • Create intuitive and performant user interfaces
  • Contribute to a shared design system and front-end architecture
  • Collaborate with cross-functional teams for end-to-end solutions
  • Write clean, efficient, and testable code
  • Mentor junior engineers and promote 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 training and certifications
  • Legal assistance and identity protection
  • Pet insurance
  • Employee assistance program (EAP)
Full Job Description


What you'll do:

  • 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.

What you'll bring:

Qualifications & Skills
  • 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


Preferred Qualifications:
  • 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.

What you'll earn

  • Base pay range: $138,000 - $235,000
  • 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)


To comply with Pay Transparency laws, employers must disclose an annual salary range. Actual offers depend on factors such as location, experience, skills, and market data. This position may also offer variable compensation.

Please contact [email protected] if you have any questions related to this job posting.

Salary Range:

USD $150,000.00 - USD $275,000.00 /Yr.

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