Senior, Software Engineer (SRE/Dev Ops)

Position Summary...

What you'll do...

Walmart’s Transactional System provides core transactional systems to enable segment and technology partners in creating wonderful omni experiences with speed and leverage. We are a highly motivated group of engineers, working in an agile group to solve sophisticated and high impact problems. This role is part of Cloud Powered Checkout team and will build the next generation multi-tenant, client agnostic, highly scalable, omnichannel checkout solution to seamlessly enable a frictionless customer checkout experience across all sales channels globally. We process millions of orders daily through our high-performance checkout services running in Edge and Cloud.

As a Site Reliability Engineer in the CPC Team, you will work with L2, Other dependent Applications, Platform team, DevOps and Engineering practitioners to proactively maintain mission-critical infrastructure, cloud platforms, microservices, tools, and processes that will ensure the highest levels of availability and reliability of CPC applications.

About Team:
Our team works closely with our US stores and eCommerce business to better serve customers by empowering team members, stores, and merchants with technological innovation. From groceries and entertainment to sporting goods and crafts, Walmart U.S. offers an extensive selection that our customers value, whether they shop online at Walmart.com, through one of our mobile apps, or in-store. Focus areas include customers, stores and employees, in-store service, merchant tools, merchant data science, and search and personalization.

What you'll do:

• Incident triage, Escalation and Resolution: Triage site-impacting production issues by quantifying impact, severity and urgency, analyzing systems for quick remediation, engaging the right teams for recovery [Reduce MTTE – Mean Time to Engage], and focusing on immediate restoration [ Reduce MTTR – Mean Time to Restore] of large-scale enterprise systems.

• Alert, Monitoring, Log analysis: Detect and analyze monitoring graphs and alerts to identify systems causing production impacts with various tools like Grafana, Prometheus, MMS, Service Now, JIRA, Dynatrace, Splunk etc  [Reduce MTTD – Mean Time to Detect].Enhance Alerting solutions: Design and implement JavaScript for the integration of alerting tool with service API endpoints with various tools like ServiceNow, Spotlight, Splunk, and xMatters. Requires knowledge of: Monitoring and alerting tools; Monitoring metrics and key performance indicators (for example, availability, MTBF, MTTR); SLIs and SLOs (for example, request latency, availability, error rates, saturation); Distributed tracing; Alerting logic. To demonstrate awareness of the metrics used to monitor software or system performance. Monitors current performance data to ensure adherence to defined SLOs and SLIs for simple applications/systems. Demonstrates awareness of the different types of alerts generated by the monitoring tools. Demonstrates awareness of infrastructure and application metrics.
• Disaster Recovery Planning: Requires knowledge of: Disaster recovery procedures and processes; Enterprise disaster recovery systems. To work with business partners to identify and document critical applications. Interprets and follows procedures in contingency plans. Explains the contingency and disaster recovery plans for assigned environment. Executes established procedures necessary to continue operations in an emergency. Participates in the design of a minimum operating environment for a computer-based facility.
• Performance and Optimization: Requires knowledge of: Unix/Linux performance optimization tuning; Java/NodeJS/Tomcat/Apache