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@dhahanrathnayaka
DevOps engineer driving cloud automation, cost optimization, and reliability.
I am a results-driven DevOps engineer with four years of experience automating and optimizing mission-critical deployments across cloud and on-prem environments.
I have led Kubernetes deployments (GKE), built CI/CD pipelines with Jenkins, GitLab CI and ArgoCD, and managed infrastructure-as-code with Terraform, Ansible and Helm, while reducing monthly cloud costs by $30,000 through rightsizing and optimizations.
I focus on reliability, security and observability—implementing ELK, Grafana, Prometheus, Kubecost and CKA-level practices—while collaborating with development, QA and security teams to deliver scalable production systems.
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Work history, roles, and key accomplishments
PickMe
May 2023 - Present (2 years 6 months)
Managed Kubernetes deployments (GKE) and GCP managed/unmanaged instances, created CI/CD pipelines with Jenkins and ArgoCD, and led FinOps cost optimizations that reduced monthly cloud spend by $30,000.
Vizuamatix
May 2021 - Apr 2023 (1 year 11 months)
Owned six production systems and co-owned three major systems; provisioned Linux servers, implemented CI/CD with GitLab CI, and deployed monitoring platforms (Zabbix, ELK, Signoz) to improve observability and availability.
Dialog Axiata PLC
Jul 2019 - Dec 2019 (5 months)
Completed internship in Technology Strategy and Access Network Planning, gaining hands-on exposure to network planning and development tasks within the engineering division.
Degrees, certifications, and relevant coursework
Bachelor of Science (Hons), Electronics and Telecommunication Engineering
2017 - 2021
Activities and societies: Final year project: AI-Based Heart Monitoring System (heart sound and pulse monitoring using deep learning); IEEE publication.
Completed a BSc (Hons) in Electronics and Telecommunication Engineering from January 2017 to August 2021.
Certificate, Deep Learning
2020 - 2020
Completed the Deep Learning Specializations on Coursera in 2020.
Certificate, Cybersecurity / Infrastructure
2020 - 2020
Completed the Terraform course from Palo Alto Networks Academy in 2020.
Certificate, Professional Certifications
2019 - 2019
Activities and societies: Courses listed: CCNA and other professional training (2019).
Completed short courses/certifications delivered by the University of Moratuwa in 2019.
Advanced Certificate, English Language
2017 - 2017
Completed an Advanced Certificate in the English Language at NIBM in 2017.
GCE Advanced Level, Secondary Education
2002 - 2015
Activities and societies: Advanced Level subjects: Combined Mathematics (A), Physics (B), Chemistry (C); General English (B).
Completed secondary education at Maliyadeva College Kurunegala from January 2002 to August 2015.
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