Randula Jayarathna

MSc in Data Science

Sep 2022 - Aug 2024

University of Gloucestershire, United Kingdom

Classification: Merit

• Advanced Statistical Programming: Developed complex Python scripts and Jupyter Notebooks for automated data extraction, cleaning, and exploratory data analysis (EDA).
• Business Intelligence & Visualization: Applied core principles of data storytelling using Power BI, Tableau, and Matplotlib to transform raw datasets into actionable executive insights.
• Machine Learning & Predictive Modeling: Designed and optimized Supervised/Unsupervised learning models, focusing on business optimization, trend forecasting, and algorithmic efficiency.
• Applied Analytics for Business: Specialized in utilizing SQL and Python to solve real-world operational challenges, bridging the gap between technical data and commercial strategy.

BSc (Hons) in Software Engineering

Oct 2016 - Dec 2019

University of Plymouth, United Kingdom

Classification: Second Class Honours, Upper Division (2:1)

• Database Architecture & Management: Specialized in Relational Database Management Systems (RDBMS), focusing on advanced SQL, schema design, and query optimization for high-availability applications.
• Systems & Network Administration: Trained in the configuration and maintenance of robust Network Infrastructures, server management, and system security protocols.
• Enterprise Software Development: Mastered Java-based software engineering for web-scale applications, emphasizing MVC architecture and object-oriented design patterns.
• API & Web Engineering: Engineered RESTful APIs and modern web platforms, integrating diverse backend services with scalable frontend technologies.
• IT Governance & Ethics: Comprehensive study of UK IT legislation, data privacy (GDPR), and professional ethics within the technology sector.

Certificate in Computer Science

Oct 2015 - Feb 2016

National Institute of Business Management

GCE Ordinary Level(O/L)

2012

Infrastructure Operations Engineer

Oct 2020 - Sep 2022

Virtusa - Colombo, Sri Lanka

• Critical Infrastructure Management: Spearheaded L2/L3 support for Mobile Number Portability (MNP) systems serving 30M+ subscribers. Ensured 99.99% service availability for mission-critical telecom architecture by managing complex cross-platform dependencies and 24/7 on-call rotations.
• SLA & Incident Leadership: Orchestrated the resolution of 150+ weekly technical incidents using Siebel and Remedy. Maintained a 98% SLA success rate and leveraged Root Cause Analysis (RCA) to implement permanent fixes, successfully reducing recurring incidents by 35%.
• Predictive Data Analytics: Engineered automated data pipelines and monitoring dashboards using Python (Pandas, NumPy, Matplotlib) and REST APIs. Applied statistical modeling to MNP logs for anomaly detection, enabling "pre-incident" response that cut system escalations by 35%.
• Performance & Database Tuning: Architected SQL optimizations including advanced indexing, triggers, and multi-threaded stored procedures. These refinements improved data retrieval speeds and system throughput for large-scale subscriber databases by 40%.
• DevOps & Automation: Eliminated manual toil by developing Shell and Python scripts integrated with Cron scheduling for system health diagnostics. This automation framework reduced manual monitoring overhead by 40% and improved reporting accuracy.
• Enterprise Security & Governance: Managed Active Directory (AD) infrastructure, including Group Policy Objects (GPOs) and NTFS permissions for 500+ users. Executed deployments and system upgrades following strict ITIL Change Management protocols to minimize production risks.
• Cross-Functional Integration: Bridged the gap between Development and Operations teams to facilitate seamless deployments. Acted as a technical lead for integration projects involving BizTalk EAI, ensuring data consistency across global enterprise platforms.

Associate Infrastructure Operations Engineer

Feb 2020 – Oct 2020

Virtusa – Colombo, Sri Lanka

• Global Data Synchronization: Provisioned L3 support for enterprise data integration, utilizing BizTalk EAI (Enterprise Application Integration) tools to ensure seamless, real-time synchronization across 34,000+ global locations.
• Workflow Optimization: Re-engineered end-to-end data transfer workflows by identifying and resolving complex integration bottlenecks. This optimization reduced processing latency by 25% and significantly improved cross-platform application performance.
• Business Process Automation: Architected automated solutions using Microsoft 365 Power Automate to eliminate manual repetitive tasks, saving departmental hours and reducing human error in critical IT workflows.
• Enterprise Collaboration & Documentation: Standardized cross-team coordination by integrating Microsoft Teams workflows and authoring comprehensive technical documentation (SOPs), ensuring 100% knowledge transfer for support teams.

Trainee Software Engineer

Nov 2019 – Feb 2020

Co-operative Insurance Company Limited – Colombo, Sri Lanka

• Backend System Optimization: Developed and tuned server-side logic for a large-scale enterprise insurance platform, maintaining high-performance throughput of 150+ queries per minute during peak traffic cycles.
• High-Concurrency Transaction Management: Leveraged advanced SQL and server-side programming to optimize transaction handling and data validation protocols, ensuring 100% data integrity and system stability for financial records.
• Full-Stack Reliability: Enhanced the end-user experience by identifying and resolving backend bottlenecks, resulting in faster load times and more robust error-handling mechanisms for insurance policy processing.

Internship in Software Engineering

May 2019 – Nov 2019

IdeaCode Global (PVT) LTD – Colombo, Sri Lanka