Principal Software Engineer – Experimentation Platform

Walmart

Principal engineer leading Walmart’s experimentation platform infrastructure. Designing scalable backend systems, technical strategy, and experimentation capabilities across the retail enterprise.

Posted 9/10/2026full-timeBentonville • California • 🇺🇸 United StatesLead💰 $110,000 - $286,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and developing large-scale systems, with a strong focus on reliability engineering, observability, and operational excellence. Proven ability to lead technical direction, mentor engineering teams, and drive cross-organizational initiatives.

Highest-signal resume keywords

Technical LeadershipJava, Scala, Lua, Rust ExpertiseLarge-Scale System DesignReliability EngineeringStrategic Thinking

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringSystem DesignLarge-Scale Systems DevelopmentTroubleshootingCode QualityAutomationObservabilitySecurity Best PracticesA-B TestingData Solutions

Soft Skills

Exceptional CommunicationProject ManagementInfluencing Technical Decisions

Tools & Technologies

Cloud-Based SystemsCompute EnvironmentsOpen-Source Frameworks

Certifications & Qualifications

Bachelor's Degree in Computer Science or Related Area

Industry Keywords

ExperimentationPlatform GovernanceOperational ExcellenceIncident MitigationEmerging Technologies

Tech Stack

Tools & technologies

CloudJavaLuaRustScala

About the role

Key responsibilities & impact

Drive the technical direction for Walmart’s experimentation backend services
Design, develop, and scale efficient and reliable systems and pipelines
Provide technical mentorship and elevate engineering culture
Partner with data scientists, product managers, and engineering leaders
Lead and participate in medium- to large-scale projects from requirements review through design, implementation, testing, troubleshooting, and delivery
Troubleshoot business and production issues and lead resolution plans
Provide business solutions through stakeholder partnerships and process management
Define the technical roadmap for experimentation platform services
Lead platform-level system design, architecture proposals, design reviews, and technical direction
Drive cross-organizational initiatives with analytics, platform, and product teams
Ensure operational excellence, incident mitigation, and root cause analysis
Mentor Staff Engineers and Senior Engineers
Evaluate and integrate emerging technologies through proof-of-concepts and adoption strategies
Advance code quality, automation, observability, and security best practices

Requirements

What you’ll need

Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 5 years’ experience in software engineering or related area; or 7 years’ experience in software engineering or related area
Proven technical leadership of a team of engineers
Experience designing, developing, testing, and maintaining large-scale systems
Expertise in one or more of Java, Scala, Lua, or Rust
Experience maintaining and deploying compute environments across local and cloud-based systems
Ability to proactively manage projects across multiple teams and troubleshoot issues
Ability to influence technical decisions across multiple teams or organizations
Strong strategic thinking
Exceptional communication skills
Ability to identify emerging technologies and guide their adoption
Expertise in reliability engineering, observability, platform governance, and operational excellence for mission-critical systems
Preferred: experience with experimentation/A-B testing, feature flags and risk-mitigated deployments, data solutions and AI/ML products, and open-source frameworks, standards, or libraries
Ability to work in a drug-free workplace and comply with Walmart's no-tolerance policy regarding illegal drugs and alcohol on the job

Benefits

Comp & perks

Competitive pay
Performance-based bonus awards
Medical, vision and dental coverage
401(k)
Stock purchase
Company-paid life insurance
PTO including sick leave
Parental leave
Family care leave
Bereavement leave
Jury duty leave
Voting leave
Short-term and long-term disability
Company discounts
Military Leave Pay
Adoption and surrogacy expense reimbursement
Live Better U Walmart-paid education benefit
Tuition, books, and fees completely paid for eligible education programs
Stock compensation may be included for certain positions