Climbing
David Rooney
DevOps/SRE/System Administrator
Manchester
Summary
A highly motivated systems engineer with a passion for growth and development in a challenging setting. Possessing a strong aptitude for learning and adapting to emerging technologies, I bring valuable skills in scripting and automation to optimize systems. Seeking a [Desired Position] role to utilize and enhance problem-solving abilities.
Overview
19
19
years of professional experience
2
2
years of post-secondary education
4
4
Languages
1
1
Certificate
Work History
Site Reliability Engineer
Prometheus Group
01.2023 - Current
- Working in an AWS environment
- Managing Kubernetes clusters.
- Deploying new environments within AWS using Terraform and configuring the applications using Ansible
- We also supported apx 40 Postgres databases
- All environments were running on Red Hat Linux
- Evaluated new technologies and tools to enhance overall system performance, stability, and security.
- Developed custom scripts/tools as needed to automate routine tasks, increasing overall team productivity and efficiency.
DevOps engineer and Linux administrator
LifeArc
Leeds, UK
08.2021 - 01.2023
- Working in an Azure environment
- Responsible for the entire environment and supporting scientists by provisioning servers for their day to day work
- Many of the environments make use of Docker containers using Kubernetes for orchestration
- I was also tasked with introducing automation, I decided on Ansible for application configuration and deployment and Terraform for infrastructure provisioning
- I also installed and deployed Prometheus for monitoring and alerting
- Also tasked with investigating migration from Oracle database 18 and 19 databases to PostgreSQL
- I also am working on server hardening based on CIS Benchmarks which I hope to automate with ansible
- Replacing as many ad hoc scripts, to centralise them for ease of maintenance with many rewritten in Python and Go
- I also set up a new Git repository to manage internal code
Devops engineer
NETMA
Germany
01.2021 - 08.2021
- Working mainly on AWS
- Utilizing docker, Kubernetes, writing scripts in Python to automate activities
- Linux servers built on Red Hat 7
- SC position so cannot elaborate
Linux and devops engineer
Neos IT
Munich, Germany
12.2015 - 12.2020
- Neos is a hosting company mainly dealing within the travel industry and is located in Munich
- As part of the Linux team my duties include day-to-day activities such as working on problem and change tickets, regular patching activities, regular backup management and building new environments
- All of our environments were deployed using Vmware ESX and later on AWS
- We also migrated a large BI platform to AWS
- Jenkins was used for CI/CD Pipelines
- I have been involved in several projects where I was responsible for the setup of new environments for our customers, some of which are large complex high availability environments
- Of these, some that contain sensitive customer data and must follow PCI DSS regulations and are regularly audited
- SSL certificate management
- The main technologies we work with are Red Hat, CentOS, Debian and Ubuntu distributions, servers range from web servers (Apache and nginx), application servers (WebLogic, tomcat), database servers (Oracle, MongoDB) also working on a large project which utilizes a lot of big data technologies such as Hadoop, Kafka, Spark etc
- Web technologies such as nginx, apache and haproxy
- Code management using Bitbucket to manage our git repositories
- We also make use of virtualization where possible, this can be traditional making use of VMware, but we also make use of docker containers alongside Kubernetes for para-virtualization
- We use automation to help simplify repetitive tasks such as software installation, operating system hardening, user creation etc (ansible, puppet, chef).
- We made use of Red Hat satellite servers to help control patching and monitoring of our Red Hat servers
- Terraform for environment creation within AWS.
SME Databases and Middleware (Contract)
T-Systems (Shell account)
The Hague, NL
01.2011 - 12.2015
- I worked in the NST Design and Architecture team as the subject matter expert for databases and middleware
- The project was responsible for transforming around 4000 servers from the legacy Shell environment to T-Systems DCS
- My main responsibility was ensuring compliance for all database and middleware transformations to DCS standards, these included setting guidelines for software life-cycle compliancy, enforcing security framework and making sure that new installs could be supported by our operational department
- All database migrations were for Oracle and MS-SQL with the middleware components included Apache, IIS, JBOSS amongst others
- I was also the focal point for our DBA team in India for escalations regarding migrations and mentored them when they were attempting new tasks or complex troubleshooting
Database Administrator/Unix Administrator (Contract)
KPN (Wholesale)
03.2008 - 01.2011
- I joined the wholesale system support team primarily to work as an Oracle DBA and secondly to be the primary team member for clustering technologies
- This included Oracle RAC, Sun Cluster, Veritas Cluster, Red Hat Cluster
- I also managed the backups (EMC Networker) and was the primary Unix admin for several applications that are supported by the team
- I also planned a large RAC installation from the top down (hardware, software, capacity etc), Creating dataguard standby databases for a few applications and troubleshooting a troublesome red hat cluster
- I was also seconded onto a team that was charged with the task of making sure all Oracle, MySql and MS-Sql were on a supportable software version, through either migration, patching or retirement
- I was also part of the team responsible for virtualization of existing platforms
Oracle DBA/Unix Administrator (Contract)
KPN (Business Market)
01.2007 - 03.2008
- For KPN I work in the business outsourcing department, this entailed support of the production, test and development
- Our main task was the day to day administration of the Oracle databases
- They use 10g RAC running on Solaris 10 (x86)
- Outside of the usual activities I am planning and implementing many new features that I feel are missing
- Including RMAN, proper backup solution (Networker), Jump start server, monitoring (nagios) and performance tuning of the production database
- The role includes installing and supporting the hardware, SAN and fibre channel switches
- I am currently working on increasing the storage for future growth and putting forward a proposal to move to ASM
Oracle DBA (Contract)
T-Mobile
05.2006 - 11.2006
- My role within T-Mobile was to support the billing test teams
- I was part of a multidisciplinary team and my function was to provide database and Unix support but also included a small amount of application support and billing
- My job was to set up the environment from a Unix perspective and restore a copy of the production database and re-configure it to reflect the test environment
- Then to apply any changes before they go into production, this includes performance monitoring and tuning
- Also support the test team with any of their problems
Education
Master of Science - Computer Security
University of Liverpool
Liverpool, United Kingdom 08.2010 - 07.2012
Skills
Oracle DBA (RAC Exadata, PL/SQL)
MySQL
PostgreSQL
Linux administration
Red Hat
Debian
Solaris administration
Server and storage Hardware
Shell scripting
Python
Go
Apache
Nginx
HA Proxy
AWS (EC2, EBS, S3, EKS, RDS, Lambda)
Azure (Compute, Storage, AKS)
Ansible
Terraform
Kubernetes
Docker
Drivinglicense
Full (Clean)
Personal Information
- Date of Birth: 01/12/75
- Nationality: British / Irish
- Marital Status: Separated
Personallife - Activities
Much of my spare time is taken up looking after my children and pets.
Interests
Snowboarding
Walking my dog
Certification
ISC2 CC
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Languages
English
Bilingual or Proficient (C2)
Dutch
Advanced (C1)
German
Upper intermediate (B2)
French
Elementary (A2)
Work Preference
Work Type
Full TimeContract WorkLocation Preference
HybridRemoteOn-SiteImportant To Me
Work-life balanceFlexible work hoursWork from home optionPersonal development programsCareer advancementCompany CultureTimeline
ISC2 CC
07-2024
Site Reliability Engineer
Prometheus Group
01.2023 - Current
DevOps engineer and Linux administrator
LifeArc
08.2021 - 01.2023
Devops engineer
NETMA
01.2021 - 08.2021
Linux and devops engineer
Neos IT
12.2015 - 12.2020
SME Databases and Middleware (Contract)
T-Systems (Shell account)
01.2011 - 12.2015
Master of Science - Computer Security
University of Liverpool
08.2010 - 07.2012
Database Administrator/Unix Administrator (Contract)
KPN (Wholesale)
03.2008 - 01.2011
Oracle DBA/Unix Administrator (Contract)
KPN (Business Market)
01.2007 - 03.2008
Oracle DBA (Contract)
T-Mobile
05.2006 - 11.2006