Cian Sheehy Since 2015, I've worked in the IT engineering realm. Currently, I find fulfillment in the role of a DevOps professional, thoroughly enjoying the challenges and responsibilities that come with it.
Experience
Platform Engineer
09/2023 - Present (1y 9m)
09/2023 - Present (1y 9m)
Capital On Tap | Fintech
Worked on migrating our applications away from IIS to containerized microservices in Kubernetes. This was done using Docker, Kustomize, Helm & Flux2
Migrated manually provisioned VMs to code using Packer and Terraform for several major projects (Teamcity, Message Bus Handlers, Windows Agents, other internal tools)
Promoted collaboration within our own team and across engineering teams to maintain platform stability and reliability
Implemented GitOps practices using Flux2 in collaboration with the team
Completed regular security patching and OS-level updates across our eco-system
Managing all of our Azure resources using IaC tools (Terraform, Pulumi, Crossplane) and where required many legacy VMs using Ansible
Ensured everything we owned was covered by monitoring using tools such as Datadog, Prometheus & Grafana
Wrote and maintained automation scripts using PowerShell (primary) and Bash (for Linux tasks), supporting provisioning, and system maintenance across our environment
Owned and maintained Azure DevOps and Octopus Deploy pipelines, implementing CI/CD workflows, environment-specific configurations, and release strategies
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Junior Platform Engineer
03/2023 - 09/2023 (7m)
03/2023 - 09/2023 (7m)
Capital On Tap | Fintech
Streamlined automation processes by developing efficient Powershell scripts, including Pull Request templates for existing repositories.
Helped manage virtual machines using Ansible.
Gained experience in cloud infrastructure management using Terraform & Pulumi in Azure and Cloudflare.
Achieved valuable exposure deploying to AKS using Kubernetes.
Contributed to teams observability by designing, and implementing monitors and dashboards, enabling early issue detection.
Optimize CI/CD processes to improve team efficiency.
Led several projects including segregating our CMS site to use it's own Nginx instance & improve security to our existing Azure functions
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Principal QA Engineer
03/2022 - 12/2022 (10m)
03/2022 - 12/2022 (10m)
Codat | Fintech
Assisted and led Automation & Quality practices across 5 teams
Worked with teams to make sure their observability needs were met e.g. Making sure we have created alerts for each service and if anything was missed we made sure to fix asap
Got good experience working with Azure cloud and Azure DevOps
Integrating Docker into our testing approach and helped the other QAs to use it effectively e.g. Stub a MsSQL database for our integration tests
Helped manage a shared repository for Azure DevOps yaml pipeline tasks. This reduced the cognitive overload for each team around the business
Created a shared npm package for the Frontend engineer to standardise configuration and thus reducing duplicated/dead code e.g. Prettier, Eslint, Webpack
Created a shared dependabot template that could be used around the business for managing packages
Coached & assisted each QA in this area on QA best practices and career goals
Involved in the QA hiring process & creating QA competency framework with the other QA Principals
Created & co-created testing strategies to make sure teams were aligned
Gained valuable experience using the following tools; C#, Typescript, Azure, Docker, Azure DevOps, Playwright, Cypress, Specflow, DataDog, TestContainers, PowerShell and many more