Aaron Walker Email & Phone Number

Carmichael, California, US

Armonk, New York, NY, US

• IBM Consulting
• Translated complex technology and solutions to concise business value propositions for Fortune 100 enterprises
• Designed compelling deal-winning proposals and bespoke technology solutions based on client needs
• Built trust and long-term relationships with key decision-makers to provide higher quality consultation for optimizing their organization's processes and workflows
• Presented emerging trends, technologies, and competitor landscapes at public events
• Collaborated with strategic partners such as Microsoft, GitHub, and GitLab, to align custom success strategy for strategic customers

Bethesda, MD, US

• Handled the presales for and lead a delivery team to streamline hybrid cloud application configuration management for an enterprise health care provider with heavily distributed teams
• Led a team to move a public cyber charter school from a single-tenant, monolithic service running Windows on-premises to a multi-tenant, microservice-based SaaS running Rancher Kubernetes
• Managed a team of engineers, including advocating for them to leadership, finding them opportunities aligned with their career goals, assisting them with their engagements, and providing them consistent feedback
• Conducted first round technical and second round behavioral interviews for junior and senior-level candidates
• Built highly available, geo-replicated GitLab clusters using the GitLab Kubernetes operator on multiple clouds, including submitting contributions to the upstream Go source code

Berlin, Berlin, DE

• Participated in the Engineering due diligence for the Uberall merger
• Built two teams of senior-level DevOps engineers and data architects and lead them to identify cross-team and cross-role areas of growth, build solutions to improve the velocity of software engineers, and design.
• Created and managed the roadmaps for DevOps and data architect roadmaps

Berlin, Berlin, DE

• Built teams of DevOps engineers and led them to identify cross-team and cross-role areas of growth, build solutions to improve the velocity of software engineers, and design architecture solutions
• Defined architecture best practices, API design and implementation guidelines, and microservice templates to improve the efficiency and consistency of the SDLC from the planning to monitoring stages
• Created and managed the DevOps roadmap; which included projects and supporting requests from developers
• Re-architected a product serving millions to use serverless services to improve performance, scalability, and stability; resulting in a 50-point increase in Lighthouse scores
• Lead a project to automate and rebuild multiple manually-managed MongoDB clusters in a different region

Berlin, Berlin, DE

• Deployed multiple Kubernetes clusters with autoscaling nodes using EKS and Terraform to host dozens of microservices
• Migrated to GitLab and created a shared CI/CD pipeline to 1) reduce the number of deployment-related tools from ten to two, to 2) decrease the average build time by 40%, and to 3) implement unit tests, integration.
• Migrated legacy infrastructure in us-west-1 to Kubernetes in us-west-2 to gain access to AWS services, to implement cluster and service auto scaling, and to reduce AWS expenditure by 30% year-over-year
• Consolidated the logging, monitoring and alerting systems to Datadog, a SaaS solution that is easy to integrate, has little to no maintenance, and provides a single pane of glass for developers and operators
• Replaced shared, static credentials with AWS SSO and dynamic credentials leasing for databases via HashiCorp Vault
• Designed and implemented cloud infrastructure using AWS services including API Gateway, CloudFront, DynamoDB, EC2, ECS, EKS, ElastiCache, Elasticsearch, Fargate, Kinesis, Lambda, Redshift, RDS (PostgreSQL), S3, SNS and.

Woodland Hills, CA, US

• Reduced AWS annual expenses by over 45% of the total expenditure
• Designed CI/CD pipelines using GitLab, Kubernetes, and Terraform resulting in a reduction of deployment times by 30% while increasing redundancy, scalability, security, and standardization
• Standardized and implemented SEO best practices resulting in, on average, a 30% decrease in loading times and a 12% increase in Page Speed Insights scores
• Deployed Prometheus, Grafana, and Datadog as infrastructure monitoring and central log management tools
• Supported the infrastructure of over 250 websites using NGINX, PHP, FastCGI caching, MySQL, Redis, and Cloudflare

Burbank, CA, US

• Media Infrastructure and Technology
• Implemented Ansible to automate the deployment, standardization and security compliance of Linux and Windows servers decreasing system deployment time by 90% and increasing average CIS security compliance by 27%
• Deployed a multi-indexer clustered Splunk Enterprise environment via Ansible to gather system, application and hardware logs
• Setup Ansible Tower to provide a UI for running common tasks for other engineers
• Deployed HAProxy and keepalived to increase systems' redundancy and availability
• Monitored system and application performance using Solarwinds

Dallas, TX, US

• Infrastructure Support Group
• Provided Linux desktop and infrastructure support to software engineers
• Deployed and managed a bind DNS server and a named DHCP server
• Upgraded RHEL/CentOS 6 servers and workstations to RHEL/CentOS 7
• Configured kickstarts to PXE boot RHEL/CentOS servers and workstations
• Developed bash and Python scripts to automate application deployment and configurations

San Diego, CA, US

• University Computing Services
• Assisted with the maintenance of over 2,000 Windows and RHEL/CentOS servers
• Spearheaded the implementation of PRTG to physically map and monitor servers
• Researched and planned the implementation of ZenDesk and ServiceNow as a replacement ticket management system for Spiceworks

San Diego, CA, US

• Office of Housing Administration
• Assisted with the maintenance of the Active Directory and GPOs for over 25 department staff members
• Provided technical support for department staff and over 5,000 new student residents
• Setup Cisco wireless mesh network for newly constructed dormitories