Principal Site Reliability Engineer
- Location SUNNYVALE, CA
- Department Technology & Software Development
- Team Software Development and Engineering
- Employment Type -
- Position -
- Requisition 841552BR
What you'll do- Design, write and build tools to improve the reliability, latency, availability and scalability of Walmart e-commerce products.
o Engender reliability and availability starting with metrics and measurements
o Enable scaling by providing tools, developing training and/or augmenting processes
o Build tools/automate to prevent re-occurrence of problem to mission critical products/services.
- Augment existing instrumentation to build a cohesive picture of the characteristics of our systems with special attention to points of failure.
- Participate in capacity planning, demand forecasting, software performance analysis and system tuning.
- Develop a deep understanding of the various services and applications that come together to deliver Walmart e-commerce products
- Design new tools to monitor and smart alerts that help discover failures/issues in a timely fashion and work with engineers to identify root cause and fix issues
- Influence, design and create new architectures, standards and methods for large-scale enterprise systems.
- Root-cause analysis complex problems involving multiple parties, networks, hardware and software that relate to scaling and performance
- Participate in on-call rotation.
- Secure the system from issues, be they real, perceived or notional
- High focus on collecting and inferring metrics
- Experience with configuration management tools such as Ansible, Saltstack, Chef and Puppet
- Build and drive the automation systems that maintain system health
- Eliminate Single Point of failure and test disaster recovery and HA regularly.
- Experience in designing, investigating, analyzing and troubleshooting large-scale enterprise systems.
- Methodical and systematic problem solving approach, combined with a solid awareness of ownership, initiative and drive.
- Fluency with running services at scale; In depth understanding of Unix systems internals and networking.
- Networking knowledge and in depth understanding of network concepts, such as different protocols (TCP/IP, UDP, ICMP, etc.), MAC addresses, IP packets, DNS, OSI layers, and load balancing).
- Understanding of Unix/Linux systems from kernel to shell and beyond, taking in system libraries, file systems, and client-server protocols along the way. Experience administering Linux systems in a production environment
- Programming experience in one or more of the following languages: Go, Java, Python, Ruby, Shell
- Bachelor's Degree in Computer Science or a related field, or relevant work experience
- Experience with distributed version control like Git or similar
- Experience with IaaS and PaaS providers such as AWS, AZURE OpenStack
- Experience with enterprise monitoring solutions like AppDynamics, New Relic, Prometheus, Graphite, Nagios, Sensu and Splunk
- Familiarity with continuous integration/deployment processes and tools such as Jenkins, Maven, Nexus, etc.,
"I feel like my manager wants to help me become a better developer and a better person overall."
Hello, Silicon Valley
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All the benefits you need for you and your family
- Multiple health plan options
- Vision & dental plans for you & dependents
- Associate discounts in-store and online
- Financial benefits including 401(k), stock purchase plans and more
- Education assistance for Associate and dependents