Systems and Infrastructure Engineer III

Position Summary...

Demonstrates up-to-date expertise and applies this to the development, execution, and improvement of action plans by providing expert advice and guidance to others in the application of information and best practices; supporting and aligning efforts to meet customer and business needs; and building commitment for perspectives and rationales. Provides and supports the implementation of business solutions by building relationships and partnerships with key stakeholders; identifying business needs; determining and carrying out necessary processes and practices; monitoring progress and results; recognizing and capitalizing on improvement opportunities; and adapting to competing demands, organizational changes, and new responsibilities. Models compliance with company policies and procedures and supports company mission, values, and standards of ethics and integrity by incorporating these into the development and implementation of business plans; using the Open Door Policy; and demonstrating and assisting others with how to apply these in executing business processes and practices.

What you'll do...

About the Team

Walmart is seeking a Systems and Infrastructure Engineer III to support and operate the Walmart Cloud Native Platform (WCNP) — Walmart's enterprise Kubernetes platform powering thousands of cloud-native workloads across global production environments. This is a platform support and operations role that demands strong hands-on expertise in Kubernetes, container networking, load balancing, CI/CD tooling, and observability. The successful candidate will partner closely with application teams to deliver reliable platform operations, drive automation to eliminate toil, and build AI-assisted tooling to accelerate incident response and platform efficiency. A solid understanding of container networking, traffic management, and load balancing is essential for success in this role.

What You'll Do

Platform Support and Operations: Serve as a primary support contact for WCNP-hosted workloads across production and non-production environments, managing cluster health, workload triage, incident response, and on-call operations to meet platform SLOs.

Cluster Build, Upgrade and Maintenance: Participate in provisioning and hardening new WCNP clusters, plan and execute cluster version upgrades with node pool rotations and control plane validations, and perform routine maintenance including node patching, certificate rotation, and etcd health checks.

CI/CD Pipeline Support: Build, maintain, and troubleshoot CI/CD pipelines using Jenkins/GitHub Actions equivalent, integrating compliance gates and security scans and supporting application teams in adopting Golden Path deployment standards.

Observability and Incident Response: Troubleshoot issues using monitoring solutions using Prometheus, Grafana and OpenObserve; build dashboards and alerting rules; and produce well-documented RCAs to drive preventive action and reduce MTTR.

Networking and Load Balancing Support: Provide hands-on support for container networking and traffic management — Kubernetes Services, Ingress controllers, Istio service mesh, DNS, TLS termination, and load balancer configurations — diagnosing and resolving east-west and north-south traffic issues.

Configuration and Change Management: Author, validate, and manage KITT configurations (Helm-based), Kubernetes manifests, RBAC, and network policies, coordinating all changes through ServiceNow Change Management with full version control and peer review.

Capacity Planning and Right-Sizing: Analyse workload resource utilisation across namespaces and node pools, and implement right-sizing strategies, HPA/VPA configurations, and autoscaler policies to balance cost and service-level targets.

Security and Compliance: Implement and audit Kubernetes RBAC, Pod Security Standards, Network Policies, and secrets management; integrate container image scanning into pipelines; and support compliance reviews against PCI-DSS, SOC2, and Walmart InfoSec standards.

Cross-Team Collaboration and Knowledge Sharing: Partner with application, SRE, and security teams to onboard services onto WCNP, resolve platform blockers, and contribute to run books, playbook, and platform documentation.

Automation and DevOps: Design and implement automation pipelines using Concord and Looper to eliminate manual toil in deployments, provisioning, and remediation workflows, and build reusable Helm charts to standardise platform operations.

AI-Assisted Automation and Tooling Development: Develop operational tools and utilities leveraging Python scripting and AI/LLM APIs — including log analysis assistants, alert triage helpers, and run book automation agents — to reduce manual effort and improve support response quality.

What You'll Bring

Bachelor's/Master's degree in Computer Science, Software Engineering, Information Technology, or a related field with 6+ years of experience in infrastructure engineering, platform operations, or DevOps roles.

Kubernetes Expertise: Deep, hands-on experience with Kubernetes administration and operations — cluster lifecycle management, workload diagnostics, RBAC, autoscaling (HPA, VPA, Cluster Autoscaler), and multi-cluster management. Certified Kubernetes Administrator (CKA) preferred.

Networking and Load Balancing: Strong understanding of Kubernetes networking — Services, Ingress controllers, CoreDNS, CNI plugins, and Network Policies. Hands-on experience with Istio service mesh for traffic management, mTLS, and L4/L7 load balancing in containerised environments.

Cloud-Native Platform Knowledge: Strong experience with enterprise Kubernetes platforms such as GKE, or AKS. Familiarity with Helm for deployment configuration and internal developer platform standards.

DevOps and CI/CD: Strong experience with CI/CD pipeline tools such as Jenkins or GitHub Actions. Proficiency in GitOps workflows and progressive delivery strategies. Familiarity with policy-as-code tools like OPA or Kyverno (deployment gate system).

Coding, Scripting, and Automation Tooling: Proficiency in Python and Bash for operational automation and tooling development. Ability to build lightweight CLI tools and automation scripts integrating with platform APIs.

Observability: Hands-on experience with Prometheus, Grafana, OpenObserve, or Datadog for SLO-based alerting, operational dashboards, and log-based health monitoring.

Cloud Platforms: Experience with GCP or Azure, deploying and operating containerised workloads in cloud-native environments.

Security and Compliance: Working knowledge of Kubernetes RBAC, Pod Security Standards, Network Policies, mTLS, secrets management (Vault, ExternalSecrets), and compliance frameworks including PCI-DSS and SOC2.
 

AI and Automation: Basic knowledge of AI/LLM API integration and prompt engineering to build operational tools such as log analysis assistants, alert triage helpers, and runbook automation agents. Curiosity to apply emerging AI capabilities to reduce operational toil.

Incident Management: Experience in L2/L3 incident triage, root cause analysis, post-incident reviews, and on-call operations with a focus on reliability improvements.

About Walmart Global Tech

Imagine working in an environment where one line of code can make life easier for hundreds of millions of people. That's what we do at Walmart Global Tech. We're a team of software engineers, platform engineers, data scientists, cybersecurity experts, and service professionals within the world's leading retailer who make an epic impact and are at the forefront of the next retail disruption. People are why we innovate, and people power our innovations. We are people-led and tech-empowered.

We train our team in the skillsets of the future and bring in experts like you to help us grow. We have roles for those chasing their first opportunity as well as those looking for the opportunity that will define their career. Here, you can kickstart a great career in tech, gain new skills and experience for virtually every industry, or leverage your expertise to innovate at scale, impact millions, and reimagine the future of retail.

We're Back to Work

Walmart's culture sets us apart, and we know being together helps us innovate, learn, and grow great careers. This role is based in our Chennai office for daily work, with flexibility for associates to manage their personal lives.

Benefits

Beyond our great compensation package, you can receive incentive awards for your performance. Other great perks include a host of best-in-class benefits — maternity and parental leave, PTO, health benefits, and much more.

Belonging

We aim to create a culture where every associate feels valued for who they are, rooted in respect for the individual. Our goal is to foster a sense of belonging, to create opportunities for all our associates, customers, and suppliers, and to be a Walmart for everyone.

At Walmart, our vision is "everyone included." By fostering a workplace culture where everyone is — and feels — included, everyone wins. Our associates and customers reflect the makeup of all 19 countries where we operate. By making Walmart a welcoming place where all people feel like they belong, we're able to engage associates, strengthen our business, improve our ability to serve customers, and support the communities where we operate.

Equal Opportunity Employer

Walmart, Inc., is an Equal Opportunities Employer – By Choice. We believe we are best equipped to help our associates, customers, and the communities we serve live better when we really know them. That means understanding, respecting, and valuing unique styles, experiences, identities, ideas, and opinions — while being inclusive of all people.

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, Information Systems, Software Engineering, or related area and 5 years' experience in software engineering, platform engineering, infrastructure engineering, or a related area.

Option 2: 7 years' experience in platform engineering, infrastructure engineering, DevOps, or a related technical 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, Information Systems, Software Engineering, or a related area and 3 years' experience in platform or infrastructure engineering.

Certified Kubernetes Administrator (CKA) or Certified Kubernetes Application Developer (CKAD) certification.

Experience operating enterprise-scale Kubernetes platforms (GKE, or AKS) in a support and operations capacity; experience with Walmart's WCNP is a strong differentiator.

Hands-on experience with CI/CD pipeline tools such as Jenkins or GitHub Actions.

Experience with Istio or other service mesh technologies for traffic management and observability in production environments.

Experience developing operational tools or automation utilities using Python and AI/LLM APIs.

Strong background in GitOps methodologies and tooling (ArgoCD, Flux).

We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing accessibility standards and integrating inclusivity seamlessly into platform design and tooling.

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, information systems, information technology, or related area and 2 years’experience in technology infrastructure engineering across areas such as compute, storage, network, mobility or virtualization-related technologies.
Option 2: 3 years’ experience in technology infrastructure engineering across areas such as compute, storage, network, mobility or virtualization relatedtechnologies.

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, information systems, information technology, or related area

Primary Location...

Tower 1, Part Of 1st, 2nd To 4th Flrs, Intl Tech Park Radial Road (radial It Park Pvt Ltd), , India