Sean Sweda Email & Phone Number

Greater Detroit Area, San Francisco Bay Area

Responsibilities:• lead a geographically distributed team of SREs for Cloud Foundry, an open-source cloud computing PaaS• ensure health of production systems, investigate anomalous behavior and triage outages, shepherd code changes from development to production, develop and enhance automation and monitoring tools• participate in 24x7x365 on-call rotation, serve as escalation point for unexpected operational issuesAccomplishments:• originally joined Cloud Foundry as a Senior SRE, elevated to Team Lead within 6 months of hire• successfully transitioned production deployment and on-call/triage responsibilities to SRE team; created documentation for SRE ramp-up and critical job functions, including prod deployment process/checklist• managed successful delivery of new production hardware architecture; developed system validation and performance benchmarking tools; streamlined validation and deployment processes• became highly proficient with BOSH, a VMware developed open-source cloud orchestration tool used to manage Cloud Foundry; helped develop BOSH best practices, identified bugs and suggested new features• implemented standards for incident tracking, documentation, and post-mortems

Responsibilities:• manage operations for Email Security Service (cloud-based spam filter, millions of messages/day)Accomplishments:• implemented monitoring, alerting, and code delivery mechanisms which stabilized service reliability and reduced downtime by an order of magnitude in less than 1 month after taking over ESS• led effort to establish common Puppet infrastructure for all Barracuda cloud services

Responsibilities: • leveraged open-source software, Linux, and commodity hardware architecture to provide horizontally scaled, high-availability infrastructure and services to campus, including:-- ITCS IMAP (mail store for ~80K users, over 40TB of data, no storage quotas, IMAP/POP & webmail)-- umich.edu mail routing (delivers ~10 million messages/week, LDAP routing, anti-spam/virus)-- University of Michigan Online Directory (~500K object LDAP directory, Active Directory replication) • directed software development, including both internal projects (e.g. simta, a mail transfer agent) and contributions to open-source community projects such as Cyrus IMAP and OpenLDAP • managed systems administrators and support staff; maintained servers spread across three data facilities; total annual operating budget of nearly $1 million • served as escalation point for troubleshooting critical problems and unexpected operational issuesAccomplishments: • documented achievement of service availability exceeding 99.99% • developed highly effective hiring and training practices • produced detailed service metrics, allowing consistently accurate utilization projections • developed benchmarking tools for system analysis and optimization • established a common monitoring and reporting framework, including the creation of templates which facilitated the rapid development and deployment of new reporting mechanisms • maintained Linux OS templates and software/application builds utilized by multiple teams, running on hundreds of servers; established radmind (equivalent to CFEngine/Puppet/Chef) configuration management methodologies and operational best-practices adopted throughout the organization • led server consolidation/virtualization effort, significantly reducing hardware footprint; projected reduction of ~$150K in annual hardware replacement and power/cooling costs

Responsibilities: • 24x7x365 support for critical campus-wide infrastructure and services, including: ITCS IMAP, umich.edu mail routing, UM Online Directory, DNS, DHCP, charged printing • guided junior staff; diagnosed and resolved operational issues; authored new administration tools • prototyped new service deployments; created and documented maintenance procedures Accomplishments: • key contributor to the development of radmind, an award-winning suite of internally developed system management tools (equivalent to CFEngine/Puppet/Chef); diagnosed bugs, suggested features, and established best practices for managing systems with these tools; authored and conducted radmind presentations • created prototype radmind templates to manage Solaris OS and transitioned all production services to radmind management; substantially improved system security, reliability and operational efficiency • leader in the development, adoption, and ongoing maintenance of homegrown Linux distribution (built entirely from source using LFS); authored document detailing project core-principles • created prototype systems for production services running on Linux, including major service transitions for UMOD (to OpenLDAP 2.x in summer 2003) and ITCS IMAP (to Cyrus IMAP in summer 2004)

Proprietor of consulting business focused on the technology needs of small/medium sized companies.