Senior Site Reliability Engineer

• Oct 2022 - Present

Manager, Incident Management EMEA

• Jul 2021 - Sep 2022

• Managing a team of Reliability Engineers responsible for monitoring, troubleshooting and driving resolution on all global impacting production incidents using ITIL best practices. • Working with multiple engineering teams to identify and remove system bottlenecks, potential points of failure and gaps in observability as part of post incident and operational readiness reviews. • Setting team objectives and goals. Holding regular 1-1 check-ins and mentoring team members to help… Show more • Managing a team of Reliability Engineers responsible for monitoring, troubleshooting and driving resolution on all global impacting production incidents using ITIL best practices. • Working with multiple engineering teams to identify and remove system bottlenecks, potential points of failure and gaps in observability as part of post incident and operational readiness reviews. • Setting team objectives and goals. Holding regular 1-1 check-ins and mentoring team members to help them achieve their goals. Carrying out end of year performance reviews. • Interviewing, hiring and onboarding engineers. • Working in an Agile environment with a Hybrid Cloud platform - AWS, Kubernetes, Docker, RDS, Nginx, HAProxy, Redis, Memcache, MySQL, PostgreSQL, GIT, Jenkins based CI/CD.

Technical Duty Officer (TDO)

• Jun 2015 - Jun 2021

• Worked on a team of designated Reliability Engineers for all major site impacting incidents. Driving incidents to their resolution; including handling any documentation, notifications, escalations, and executive communications. • Responsible for daily change management to minimise risk and change collision while not slowing down product changes. Working as a point of contact with multiple team leads scheduling critical infrastructure changes to avoid or minimise user impact. •… Show more • Worked on a team of designated Reliability Engineers for all major site impacting incidents. Driving incidents to their resolution; including handling any documentation, notifications, escalations, and executive communications. • Responsible for daily change management to minimise risk and change collision while not slowing down product changes. Working as a point of contact with multiple team leads scheduling critical infrastructure changes to avoid or minimise user impact. • Reviewing incidents for common or chronic problems/issues that either impact a service or the ability to monitor, manage, or mitigate impact to services. Chronic, stubborn, or recurring problems are identified, documented, triaged, and assigned for resolution in Jira. • Worked to shape best practices in the Reliability Org. Including defining and improving policies, procedures, and processes used by the overall Engineering org. • Created and led a mentoring program to identify, train and onboard individuals with the right mix of technical and soft skills to grow the team into a 24/7 follow the sun model.

Lead System Administrator

• Oct 2013 - May 2015

• Ultimate responsibility for the infrastructure of Daft.ie, Adverts.ie and Boards.ie across multiple data centres and cloud providers. • Leading a team of system administrators of varying experience and skill levels. This involved detailed project planning with the team as a whole, as well as individual goal setting, reviews and performance management sessions. • Worked closely with the Group Financial Controller to plan and implement cost saving measures resulting in a 55%… Show more • Ultimate responsibility for the infrastructure of Daft.ie, Adverts.ie and Boards.ie across multiple data centres and cloud providers. • Leading a team of system administrators of varying experience and skill levels. This involved detailed project planning with the team as a whole, as well as individual goal setting, reviews and performance management sessions. • Worked closely with the Group Financial Controller to plan and implement cost saving measures resulting in a 55% saving. • Led a cross discipline team to develop a quality monitoring system allowing for the monitoring and active targeting of low quality listings on site. • Designed and implemented a new more granular server monitoring system (Graphite, Cabot, Grafana). • SLA monitoring and reporting to senior management team including: Uptime, page render speeds, response times.

Senior System Administrator

• Oct 2011 - Oct 2013

• Designed and implemented a dynamic, high availability media serving system for all the Distilled Media group sites, supporting the varying requirements of each site while running on a cost effective platform. (AWS, Autoscaling, EC2, S3, Varnish, Webp, Spdy). • Implemented a group wide firewall and load balancing layer allowing the ability to cache and serve static content (FreeBSD, Varnish, PF, Nginx). • Involved in the infrastructure design for a number of the groups websites… Show more • Designed and implemented a dynamic, high availability media serving system for all the Distilled Media group sites, supporting the varying requirements of each site while running on a cost effective platform. (AWS, Autoscaling, EC2, S3, Varnish, Webp, Spdy). • Implemented a group wide firewall and load balancing layer allowing the ability to cache and serve static content (FreeBSD, Varnish, PF, Nginx). • Involved in the infrastructure design for a number of the groups websites (Thejournal.ie, Boards.ie, Adverts.ie) facing a number of new unique challenges due to the differing traffic patterns of each individual website. • Involved in yearly roadmaps and project outlining reporting to the group CTO. • Responsible for mentoring and upskilling junior workmates.

System Administrator

• Jun 2011 - Oct 2011

• Leading PCI compliance projects which involved implementing best practice security features. • Migrated to a Jenkins/Git Continuous Integration, automated testing, and deployment system. • Implemented Puppet based server configuration management system. • Set up system monitoring and alerting to find and resolve system bottlenecks (Nagios, Munin). • Project managed multiple office infrastructure moves to accommodate a fast growing team (PBX, Samba domain… Show more • Leading PCI compliance projects which involved implementing best practice security features. • Migrated to a Jenkins/Git Continuous Integration, automated testing, and deployment system. • Implemented Puppet based server configuration management system. • Set up system monitoring and alerting to find and resolve system bottlenecks (Nagios, Munin). • Project managed multiple office infrastructure moves to accommodate a fast growing team (PBX, Samba domain controller, incremental backups).

System Administrator

• Jun 2006 - Jun 2011