Principal, Software Engineer, Mobile/AR

About the position

The Emerging Tech team is passionate about solving customer and associate problems with the newest technologies. The team is responsible for creating breakthrough capabilities, delivering frictionless experiences and making these technologies easily available to thousands of Walmart developers and 2.2 million associates. The applications and services built on these capabilities are used by hundreds of millions of customers daily. Our team creates reusable technologies to help with customer acquisition, onboarding, and empowering merchants, while ensuring a seamless experience for both of these stakeholders. We also optimize tariffs and assortment in accordance with Walmart's Everyday Low Cost philosophy. We not only create affordability, but we also deliver customized experiences for customers across all channels - in-store, mobile app, and websites.

Responsibilities

• Leads the discovery phase of large Mobile Engineering projects by collaborating with cross-functional teams to determine project strategy; interpreting strategy into sustainable mobile solutions; driving prototype development to ensure concept is feasible; and implementing prototypes to validate projects.
• Troubleshoots business and production issues for mobile devices by reviewing and analyzing information; engaging support teams to assist in the resolution of issues; analyzing issues based on expert knowledge of mobile devices and programming; formulating and implementing an action plan; interpreting results to determine further action; and performing root cause analysis across multiple mobile devices to prevent future occurrence of issues.
• Leads project teams for Mobile Engineering projects by providing direction regarding project plan; identifying short- and long-term solutions and timelines; providing guidance regarding project issues or roadblocks; reviewing and approving proposed solutions; implementing new architectural patterns; and performing design and code reviews of changes.
• Develops innovative mobile technology solutions and strategies to support business objectives by collaborating with cross-functional business partners; developing assessments of key opportunities; benchmarking and analyzing industry best practices; forecasting for future technologies; driving high-priority initiatives; identifying and implementing solutions; communicating with and influencing decision-makers and executives within the organization; influencing the industry to adopt sustainable solutions; and defining software development guidelines, standards, and processes.
• Leads medium- to large-scale, complex, cross-functional projects for Mobile Engineering by collaborating with cross-functional teams to determine project requirements; translating requirements into mobile solutions for multiple operating systems; gathering requested information; writing and developing code that can be applied to multiple types of mobile devices; integrating solutions to ensure they are applicable to multiple operating systems; developing user interface solutions; conducting testing to ensure solution is functional; communicating project status and roadblocks to team members and stakeholders; determining solutions to issues; enhancing design to prevent reoccurrence of defects across multiple devices; ensuring on-time delivery; and collaborating with project managers to provide guidance on project implementation plan.
• Drives the execution of multiple business plans and projects by identifying customer and operational needs; developing and communicating business plans and priorities; removing barriers and obstacles that impact performance; providing resources; identifying performance standards; measuring progress and adjusting performance; accordingly, developing contingency plans; and demonstrating adaptability and supporting continuous learning.
• Provides supervision and development opportunities for associates by selecting and training; mentoring; assigning duties; building a team-based work environment; establishing performance expectations and conducting regular performance evaluations; providing recognition and rewards; coaching for success and improvement; and ensuring diversity awareness.
• Promotes and supports company policies, procedures, mission, values, and standards of ethics and integrity by training and providing direction to others in their use and application; ensuring compliance with them; and utilizing and supporting the Open Door Policy.
• Ensures business needs are being met by evaluating the ongoing effectiveness of current plans, programs, and initiatives; consulting with business partners, managers, co-workers, or other key stakeholders; soliciting, evaluating, and applying suggestions for improving efficiency and cost effectiveness; and participating in and supporting community outreach events.

Requirements

• 12+ years of professional experience in iOS and Android mobile platform development.
• 5+ years of hands-on programming experience in Swift and Kotlin.
• Proven experience building cross-platform spatial computing applications (AR/VR/MR).
• 3+ years of experience using Apple's ARKit, RealityKit, and Vision frameworks.
• Experience in building AR applications using RealityKit and ARKit on iOS.
• Experience using ARCore and related Android AR SDKs.
• Familiarity with Unity, Unreal Engine, or other AR/VR frameworks.
• Strong command of 3D Math, Linear Algebra, and Animation techniques.
• Deep understanding of mobile architecture, design patterns, and performance optimization.
• Proven ability to mentor engineers, drive large-scale technical projects, and set architectural direction.
• Strong collaboration and cross-functional leadership skills.
• Excellent communication skills - both verbal and written.
• Analytical mindset and a problem-solving attitude.
• Demonstrated ability to quickly learn and adapt to new technologies.

Nice-to-haves

• Hands-on experience with Mixed Reality/Virtual Reality platforms such as Apple Vision Pro, Meta Quest, HoloLens, Vive, Rift, etc.
• Familiarity with Filament, three.js, or similar rendering engines.
• Proficiency with 3D modeling tools such as Maya, Blender, or equivalent.
• Experience in game development, 3D graphics, or interactive design is a strong plus.
• Exposure to cloud-connected AR experiences, spatial mapping, or SLAM technologies.

Benefits

• 401(k) match
• stock purchase plan
• paid maternity and parental leave
• PTO
• multiple health plans
• incentive awards for performance
• company-paid life insurance
• short-term and long-term disability
• company discounts
• adoption and surrogacy expense reimbursement
• Live Better U education benefit program