Principal, Software Engineer-Experimentation Platform

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.

Preferred Qualifications:

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,…