Senior Linux Administrator
Location: IE, , Dublin
Department: IT
Employment type: Full-time
Required experience: Mid-Senior level
Required education: Bachelor's Degree
Industry: Airlines/Aviation
Function: Information Technology
Company profile: Ryanair is Europe’s favourite low fares airline, operating more than 1,600 daily flights (over 500,000 per year) from 69 bases, across 1,600 low fare routes, connecting 186 destinations in 30 countries and operating a fleet of 300 new Boeing 737-800 aircraft. Ryanair has recently announced firm orders for a further 180 new Boeing aircraft, which will be delivered between 2014 and 2018. Ryanair currently has a team of more than 9,500 highly skilled professionals, will carry 86 million customers this year and has an outstanding 30-year safety record.
Description: The Senior Linux Administrator will be responsible for working with the Systems Support team specialising in administration and support of Linux servers, applications and services, from 1st to 2nd level capabilities, ensuring 24/7 availability of all Linux servers associated web sites, applications, services and meeting all agreed SLA’s. The Linux Administrator will be supporting the integration of new initiatives and projects within the production server/application environment(s).   Reporting to the Systems Support Manager but working very closely with our Linux Administrators and other members.
Requirements: Senior Linux System Administrator with strong customer service and production support experience.Detail oriented with strong follow through skills. Candidate must be capable of taking responsibility for a task and managing it through completion. Manages time and shifting priorities effectively and maintains a positive attitude in the face of varying and sometimes conflicting business requirements. Identifies creative ways to achieve success.Strong written and oral communication skills; capable of writing usable technical documentation, documenting and following recurring procedures, training internal customers in complex topics, making presentations to an internal audience, and interfacing with other teams.Has a proven ability to analyse requirements, estimate work involved , map project dependencies, and be able to communicate with non-specialists in the areaStrong analytical problem solving skills; understands how other aspects of the IT environment such as firewalls, DNS, network design, storage architecture, and tiered architectures can impact local systems.A solid understanding of a UNIX-based operating system; writing scripts, system installation and configuration, automated monitoring systems, security hardening, automated management, patch management, installing third-party software, and resolving open source dependency requirements.Delivering and making install and configuration guides.Disciplined planning and management of changes designed to improve the stability, performance, and security of product platform(s). Candidate should be experienced with formal change management procedures, documentation, testing, validation, and rollback plans.Fluency in written and oral English Skills to include some or all of the following: 6 – 8 years experienceExpert understanding of a Linux distribution, preferably RHEL based.Knowledge of scripting tools (such as bash/awk/sed/perl/python).System monitoring tools (Nagios, Catci, MRTG, PRTG)Knowledge of open-source technologies (apache, samba, java/j2ee, tomcat, sendmail).Hardware skills from server installation and configuration (HP/DELL).Knowledge of virtualised environments.Knowledge of Database (MySQL and Oracle specifically).Supporting Java based applications for Production systemsExperience working in a production environmentAutomated deployment and management of systems using Puppet, Chef or similarA passion for Linux 
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