Principal, Software Engineer

Position Summary… What you’ll do…

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 world‑class experience that enables teams across Walmart to easily create, monitor, analyze, and act on experiments.

Please note:

“Immigration sponsorship is not available in this role”

As a part of this team, you will get the opportunity to:

• 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 diverse, 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, not just within a single team

• 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; 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.

• Drive cross‑org initiatives‑collaborating with analytics, platform, and product teams to deliver unified experimentation capabilities.

• Ensure Operational Excellence for the 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 life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short‑term and long‑term disability, company discounts, Military Leave Pay, adoption and…