Principal, Software Engineer

Position Summary...

Walmart Global Tech - Critical Infrastructure Automation Observability team is focused on enabling highly reliable and efficient infrastructure through an intent-based platform, offering advanced abstraction, seamless automation, real-time observability, proactive assurance, and actionable insights.The team is developing next-generation Zero-Touch Networking platform for designing intelligent, scalable systems that transform how infrastructure is managed across one of the world’s largest technology environments. 

What you'll do...

Walmart Global Tech is seeking a Principal Engineer – Automation & Orchestration to lead the design, development, and operation of cloud-based, programmable infrastructure across one of the world's most complex technology footprints. This role sits at the intersection of software engineering, network engineering, and platform infrastructure — owning the systems, workflows, and toolchains that automate Walmart's global network fabric across Azure and GCP.You will refine and enhance the architecture for automation platforms, workflow orchestration pipelines, and self-healing infrastructure systems powering Walmart's stores, eCommerce, and supply chain. As a technical authority, you'll shape a multi-year roadmap that shifts Walmart's infrastructure from manual operations to automation-driven outcomes — directly reducing manual processes, accelerating change velocity, and improving reliability at global scale.

What You'll Do

Automation Architecture & Strategy:

Define and own the technical vision for Walmart's infrastructure automation platform, spanning device configuration, topology-driven provisioning, change workflows, policy enforcement, and closed-loop remediation. Lead event-driven automation pipelines — from signal ingestion through automated remediation and ticket closure — to reduce MTTR and eliminate repeat manual interventions. Champion everything-as-workflow principles including version-controlled configuration, CI/CD-driven delivery, and source-of-truth state reconciliation.

Workflow Orchestration & Automation Platforms: 

Design and operate scalable workflow orchestration systems with DAG principles, retry/failure handling, idempotency guarantees, and observability patterns. Build reusable automation abstractions — provisioning, validation, rollback, and notification — enabling engineers to compose workflows with AI tooling and minimal coding expertise. Drive event-driven orchestration via RabbitMQ and Kafka to trigger and track distributed automation tasks across large device fleets.

Network Programmability & Cloud Automation:

Architect programmable infrastructure using platforms and tools such as Kubernetes, WCNP, YANG, NETCONF, RESTCONF, and gNMI/gRPC for model-driven configuration and integrating observability, complemented by custom Python/Django and Go tooling. Automate device provisioning and lifecycle management — including ZTP, site onboarding, firewall policy enforcement, and GitOps-based continuous deployment. Establish Kubernetes-native networking patterns, Create/Read/Update/Delete-based operator models, and simulation-backed testing frameworks for production validation.

Platform & State Management: 

Design and integrate source-of-truth systems for device inventory, configuration snapshots, topology graphs, and compliance audit trails using PostgreSQL, Graph databases, and document stores. Architect telemetry and observability infrastructure using Elasticsearch/OpenSearch, Redis, Prometheus, and Grafana — including IPAM/CMDB bidirectional sync with ServiceNow and Infoblox. Establish zero-trust access and secrets management via Akeyless and PingFederate, and define SLO/SLA reliability frameworks for the automation platform.

Cross-Functional Leadership:

Mentor Staff and Senior Engineers through architectural pairing, design reviews, and technical hiring across automation and platform teams. Represent the platform in Walmart's engineering governance bodies and engage with key vendors (Cisco, Juniper, Arista, Versa) and industry communities (NANOG, OpenConfig, CNCF) to shape long-term technology strategy.

What you'll bring:

• 10+ years of software or network engineering experience, with 5+ years focused on  automation, infrastructure programmability, or platform engineering at large scale.
• Expertise in  automation tooling and frameworks — such as Ansible or equivalent — with production deployments across multi-vendor environments.
• Demonstrated experience building workflow orchestration systems using one or more of: Apache Airflow, Temporal, Argo Workflows, Prefect, or equivalent DAG/workflow platforms.
• Strong programming proficiency in Python (automation scripting, Django REST APIs, framework development) and/or Go (Golang) (tooling, microservices, CLI utilities).
• Production experience with Kubernetes (AKS/GKE) — deploying and operating automation platform workloads, custom controllers, and event-driven workers.
• Experience architecting and automating cloud network infrastructure on Azure and/or GCP — VPC/VNet design, ExpressRoute/Cloud Interconnect, routing automation, and cloud security group management.
• Working knowledge of messaging and eventing systems — RabbitMQ, Kafka, or equivalent — for distributed automation task orchestration.
• Hands-on experience with Elasticsearch/OpenSearch for telemetry ingestion, log search, and operational analytics.
• Proficiency with PostgreSQL — schema design for network state/audit data, query optimization, and HA configurations.
• Experience with secrets management (Akeyless, HashiCorp Vault, or equivalent) and automation credential lifecycle.
• Knowledge of SSO/identity protocols (OAuth 2.0, OIDC, SAML) and enterprise identity providers such as PingFederate.
• Knowledge and exposure to model-driven networking — YANG, NETCONF, RESTCONF, and/or gNMI/gRPC streaming telemetry, with understanding of network protocols and architectures — BGP, OSPF, IS-IS, MPLS, VXLAN, STP/RSTP, QoS.
• Proven ability to lead cross-functional technical initiatives and influence engineering direction across multiple teams.
• Strong written and verbal communication skills — able to translate complex network and automation concepts to engineering teams, SREs, and senior leadership.

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 surrogacy expense reimbursement, and more.You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. For information about PTO, see https://one.walmart.com/notices.Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities. Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart. Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms. For information about benefits and eligibility, see One.Walmart. The annual salary range for this position is $143,000.00 - $286,000.00 Additional compensation includes annual or quarterly performance bonuses.Additional compensation for certain positions may also include : - Stock

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Minimum Qualifications...

Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications.

Option 1: 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.Option 2: 7 years’ experience in software engineering or related area.

Preferred Qualifications...

Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.

Master’s degree in computer science, computer engineering, computer information systems, software engineering, or related area and 3 years' experience in software engineering or related area., We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Primary Location...

1345 Crossman Ave, Sunnyvale, CA 94089-1114, United States of AmericaWalmart and its subsidiaries are committed to maintaining a drug-free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. This policy applies to all employees and aims to create a safe and productive work environment.