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

Data Analyst

Feb 2025 – Apr 2026

Vesaw Infotech – London, United Kingdom

• Retail Data Analysis: Analysed pricing, promotion, and inventory datasets for a major UK grocery retail client using SQL and Python, identifying trends and data quality issues to support business decision-making.
• Dashboard & Reporting: Built and maintained live Power BI dashboards to track KPIs across sales, stock, and promotions — enabling stakeholders to self-serve insights and reduce manual reporting effort.
• Data Pipeline Validation: Profiled and validated data from relational databases, REST APIs, and CSV/Excel/JSON files — identifying source-to-target mismatches and data quality defects to ensure clean, reliable reporting.
• Insight Delivery: Delivered ad-hoc and scheduled analysis reports to client stakeholders, translating raw data into actionable recommendations through Python, SQL, and Excel (VBA).

Operations Engineer (L2/L3 Application Support)

Oct 2020 – Sep 2022

Virtusa – Colombo, Sri Lanka

• Mission-Critical Support: Delivered L2 application support for MTN MNP systems serving 0M+ subscribers, resolving 0+ weekly tickets via ServiceNow and Remedy with 0% SLA compliance and 0% uptime.
• MTTR Reduction: Reduced MTTR by 0% through structured RCA, Linux log analysis, Windows event checks, and SQL validation — implementing permanent fixes for recurring incidents.
• Live Monitoring Dashboards: Built dashboards using Python, R, REST APIs, and SQL to monitor server health, daily MNP transaction activity, ticket queues, failed transactions, error logs, and SLA performance.
• Automation: Automated scheduled health checks, log parsing, and status report generation using Python, Bash, Shell scripting, and CRON — reducing manual overhead by 0%.
• Performance Tuning: Optimised SQL with advanced indexing, triggers, and stored procedures — improving data retrieval speeds for large-scale subscriber databases by 0%.

Associate Operations Engineer

Mar 2020 – Oct 2020

Virtusa – Colombo, Sri Lanka

• Enterprise Integration: Delivered L3 support for BizTalk EAI applications, ensuring seamless data synchronisation across 0+ global retail locations in line with ITIL protocols.
• Change Management: Led onboarding for new markets and managed change activities with stakeholders to deploy updates without service interruption.
• Workflow Automation: Built automated solutions using Microsoft 365 Power Automate, reducing manual repetitive tasks and improving cross-team coordination.

Trainee Software Engineer

Dec 2019 – Feb 2020

Co-operative Insurance Company Limited – Colombo, Sri Lanka

• Backend Optimisation: Supported backend systems handling 0+ queries per minute, improving SQL queries to enhance stability and response time for financial transaction processing.