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Senior Software Engineer - Site Reliability
Job Type: Full Time
Posting Date: 5/2/2021
Job Description:Position Summary. . . What you'll do. . . As a member of the SRE team you will work with other SRE and Dev. Ops practitioners to produce mission-critical infrastructure, tools, and processes that will ensure highest levels of availability and reliability of all our websites, systems and services. As a senior member of the team you will be expected to work with management, peers, and customers to define and implement the technical vision of the team. You're right for the job if you're comfortable with deep technical Linux, networking topics, and distributed architectures. You will work cross-functionally amongst a variety of teams and be a core contributor in every significant engineering service or solution that we deliver to our stakeholders. You'll excel if you have enthusiasm for digging deep, and a flare for sharp technical communication, prioritization and organization. You will work directly with our Software Engineering teams to build our next generation "always up" cloud based e-commerce/Retail and Enterprise platform. Site Reliability Engineers are hybrid systems and software engineers who are responsible and take ownership for reliability, scalability, automation, and other issues related to uptime and availability of Walmart's e-commerce/Retail and Enterprise platform. Our goal is to build, scale and guard the systems that delights the customers. To do so, you will need to strong skills in following areas:
Design, write and build tools to improve the reliability, latency, availability and scalability of Walmart e-commerce/Retail and Enterprise products.
Engender reliability and availability starting with metrics and measurements
Enable scaling by providing tools, developing training and/or augmenting processes
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/Retail and Enterprise 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 metric documentation to be used by others to build and maintain systems.
Scripting and Development responsibilities
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. Additional responsibilities may include:
Drives standardization and service focused instrumentation. Provides subject matter expertise. Resolves break/fix scenarios, engaging broader teams as necessary; and partners/leads to achieve continuous improvement. Contributes to command and control related activities focused on restoration of complex outages, and rapid restoration. Participate on 24/7 on-call rotation. May work independently or as part of a team on more complex projects. Provides mentoring and guidance to more junior team members.
Creates systems engineering and architectural velop software in several modern languages. Develops large/complex database-backed systems and has an understanding of DB schema and query performance. Utilizes professional best practices in day-to-day work like revision control, unit testing, or other. Applies statistical data analysis techniques.
Networking responsibilities: Understanding and performing TCP dumps, snoop, and other network sniffers. Understands and applies knowledge of most protocols (TCP/IP, HTTP, UDP, etc. )
Application Technologies: Provides recommendations and advice to the team and/or department in the areas of web services, OS, and storage, including being an active liaison to Development, QA and the Business.
Analyzes systems and makes recommendations to prevent possible problems. Takes lead on issue resolution activities using knowledge of complex and company-wide systems.
Lead end-to-end audit of monitors and alarms based on subsystem knowledge.
Utilizes time management and project management skills to lead the resolution of issues in a timely and organized manner, effectively communicating necessary information. May consult directly with developers or third party vendors; provides subject matter expertise.
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