Thisaru Wickramasekara

DevOps Engineer with hands-on experience in site reliability engineering, infrastructure automation, and monitoring across both on-premise and cloud environments. Proven track record of building robust pipelines, automating manual processes, and integrating observability tools such as Grafana, Prometheus, and Telegraf. Skilled in scripting with Python, Bash, and Java, with a strong focus on delivering scalable, secure, and highly available systems through automation and proactive monitoring.

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Technical Skills

A showcase of my proficiency in various DevOps tools and technologies, assessed by AI.

Python

Intermediate

Designed and developed Python-based monitoring tools, demonstrating practical scripting skills for automation and SRE.

Bash

Beginner

Familiarity with core concepts of Bash.

Java

Intermediate

Familiarity with core concepts of Java.

Azure

Beginner

Familiarity with core concepts of Azure.

CI/CD Pipelines

Beginner

Familiarity with core concepts of CI/CD Pipelines.

Jenkins

Expert

Familiarity with core concepts of Jenkins.

Grafana

Expert

Familiarity with core concepts of Grafana.

Prometheus

Beginner

Familiarity with core concepts of Prometheus.

Telegraf

Expert

Familiarity with core concepts of Telegraf.

Oracle DB

Intermediate

Familiarity with core concepts of Oracle DB.

InfluxDB

Expert

Familiarity with core concepts of InfluxDB.

SQL Server

Intermediate

Familiarity with core concepts of SQL Server.

Key Vault

Beginner

Familiarity with core concepts of Key Vault.

SRE

Beginner

Familiarity with core concepts of SRE.

Automation

Intermediate

Familiarity with core concepts of Automation.

My Projects

see some of my projects

Database replace process

Developed a new database replacement process using Python scripts, replacing the previous RMAN-based method. This new approach archives and replaces individual PDBs instead of the entire CDB, significantly improving efficiency and minimizing downtime. The solution is now reliably used across hundreds of environments at IFS. Achieved this outcome in collaboration with my teammates, ensuring both reliability and scalability.

Jenkins

Python

Oracle

Monitoring and Alerting System

An in-house environment monitoring system developed to track the status and technical health of long-running development environments used across IFS. These environments, critical to daily development activities, are relied upon by thousands of developers. The system provides real-time visibility into environment uptime, resource utilization, service availability, and key integration touchpoints, significantly reducing downtime and improving development efficiency.

Java

Grafana

Python

Bitbucket

InfluxDB

SQL

Jira APIs

Telegraf

Automated the Oracle DB patching process

Designed and implemented an automated solution to streamline and standardize Oracle patch upgrades and rollbacks on Windows-based environments. The Jenkins-driven process enables users to initiate upgrades or rollbacks by supplying the necessary patch files and parameters, ensuring a smooth and error-resistant experience. Key automation steps include disabling conflicting jobs, selecting the appropriate patches from JFrog, and monitoring logs for completion. This solution minimizes manual intervention, reduces operational risk, and improves consistency in Oracle patch management across environments.

Jenkins

Python

Oracle

Jfrog

Machine Learning Projects

mutiple projects to tryout ML for fun

Python

Kaggle

jupyter notebook

Google Collab

Work Experience

My professional journey and key contributions.

Associate DevOps Engineer

IFS · Quality Engineering and Platform Operations Team · Infrastructure and Development Team

May 2025 - Present·4 mos

Supported DevOps team in maintaining CI/CD pipelines, gaining practical experience with Jenkins and Docker.
Automated basic build processes, enhancing efficiency and reducing manual effort.
Developed familiarity with infrastructure monitoring using Grafana.
Contributed to internal tool documentation, improving usability and knowledge sharing.

Associate DevOps Engineer

IFS · Build and Deployment Team · Site Reliability Engineering Team

May 2023 - April 2025·2 yrs

Automated Grafana dashboard creation across 400+ environments, standardizing visibility and reducing manual effort.
Designed Python monitoring tools to proactively track Oracle DB tablespace, preventing production outages.
Integrated on-prem and Azure InfluxDB and SQL Server for centralized, real-time metrics.
Developed automated issue creation for environment unavailability, accelerating incident response.
Automated Oracle DB patching (grace patching) for long-running production servers.
Implemented Jenkins pipelines for automated PDB replacement, streamlining database deployment and rollback.
Built scripts to track and display DB error logs, improving root cause analysis.
Automated Azure workflows, including Key Vault access, resource housekeeping, and environment provisioning.
Maintained and improved on-prem Grafana infrastructure, including upgrades, plugin maintenance, and DR.
Partnered with developers to create repeatable and user-friendly environment configuration tools.
Provided real-time log insights and historical dashboards during service incidents.
Maintained documentation of recurring processes to improve onboarding and knowledge sharing.

Undergraduate Trainee

IFS · Build and Deployment Team · SRE Team

July 2022 - May 2023·11 mos

Supported DevOps team in maintaining CI/CD pipelines, gaining practical experience with Jenkins and Docker.
Automated basic build processes, enhancing efficiency and reducing manual effort.
Developed familiarity with infrastructure monitoring using Grafana.
Contributed to internal tool documentation, improving usability and knowledge sharing.

Education

My academic journey and qualifications.

University of Westminster

BEng Software Engineering

Jan 2020 - Jul 2025

St. Aloysius College · Ratnapura

Primary & Secondary Education

2007 - 2018