Principal, Software Engineer-Experimentation Platform

Bentonville, AR: $110,000 - $220,000/yr Sunnyvale, CA: $143,000 - $286,000/yr Regular / Permanent Salaried

Help drive a culture of experimentation and data-driven decision-making at Walmart scale to continuously evolve and improve the customer experience. We are seeking a technical lead software engineer to design and advance the core infrastructure powering Walmart's self-serve experimentation platform. This position sits on the Walmart Experimentation Platform team, where our mission is to deliver a first-in-class, reliable, and scalable experimentation experience across all of Walmart's digital surfaces.

You will shape the platform's multiyear technical strategy, drive cross-org alignment, and ensure the architecture can support Walmart's evolving experimentation needs.

• Drive the technical direction for Walmart's experimentation backend services, aligning long-term platform strategy with business needs across multiple organizations
• Design, develop, and scale efficient and reliable systems and pipelines to support teams globally throughout Walmart
• Provide deep technical mentorship and elevate engineering culture across a high-performing, agile engineering team
• Closely partner with data scientists, product managers, and engineering leaders to advance experimentation methodologies and ensure platform adoption and success

• Proven technical leadership of a team of engineers
• Experience designing, developing, testing, and maintaining large-scale systems
• Expertise in one or more:
  Java, Scala, Lua, Rust
• Maintaining and deploying compute environments across local and cloud-based systems
• Ability to proactively manage projects across multiple teams and troubleshoot issues
• Proven ability to influence technical decisions across multiple teams or organizations
• Strong strategic thinking-ability to connect engineering decisions to long-term business outcomes
• Exceptional communication skills, enabling clear articulation of complex technical approaches to senior leadership and cross-functional audiences
• Ability to identify emerging technologies and guide their adoption
• Expertise in reliability engineering, observability, platform governance, and operational excellence for mission-critical systems

• Experience working with Experimentation (A/B Testing)
• Experience working with Feature Flags and risk-mitigated deployments
• Experience building data solutions and AI/ML products
• Strong contributions to open-source frameworks, standards, or libraries

Lead and participate in medium- to large-scale projects by reviewing requirements; translating requirements into technical solutions; designing solutions (design docs, wireframes, implementation plans); writing and developing code; testing; collaborating with cross-functional teams; troubleshooting open issues and bug fixes; and ensuring on-time delivery.

• Troubleshoot business and production issues by gathering information (issue, impact, criticality, root cause); engaging support teams to assist in the resolution of issues; formulating an action plan; and performing actions as designated in the plan.
• Provide and support the implementation of business solutions through partnerships with stakeholders, identifying needs, managing processes, and adapting to evolving demands.
• Define the technical roadmap for experimentation platform services, aligning architecture decisions with multi-quarter business priorities.
• Lead the design of platform-level systems, authoring architecture proposals, conducting design reviews, and setting technical direction across services.
• Drive cross-org initiatives, collaborating with analytics, platform, and product teams to deliver unified experimentation capabilities.
• Ensure operational excellence for experimentation backend services, joining and driving incident mitigation efforts and root cause analysis.
• Mentor Staff Engineers and Senior Engineers, enabling them to independently lead large-scale initiatives.
• Lead evaluations and integration of emerging technologies, guiding proof-of-concepts and adoption strategies.
• Uphold and advance engineering excellence, including code quality, automation, observability, and security best practices.

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid…