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I am

Randula Jayarathna

View My CV
About Me

About Me

About Me

Award-winning Operations Engineer with over 3 years of experience in delivering data-driven insights and optimising IT infrastructure to drive business performance. Known for designing and implementing scalable ETL workflows, enhancing data quality, and streamlining complex database systems to support critical business goals. Proven expertise in L2 and L3 support, troubleshooting, and managing cloud and on-premises environments (Windows/Linux), using tools like Microsoft SCCM, ServiceNow, and Active Directory. Skilled in scripting for process automation and database management, achieving 99.99% system uptime, reducing resolution times by 35%, and improving service quality with measurable impact. Recently earned an MSc in Data Science with a focus on machine learning, enabling the delivery of innovative analytics solutions that bridge technical operations and strategic decision-making.

"Let's build smarter solutions together! I value professional connections, so feel free to reach out."

My Resume

My Resume

Education

MSc in Data Science

Sep 2022 - Aug 2024

University of Gloucestershire, United Kingdom

Achieved a merit classification

  • Python Notebooks and Scripting
  • Data Analysis and Visualisation Principles
  • Applied Data Analysis Techniques for Business
  • Machine Learning and Optimisation

BSc (Hons) in Software Engineering

Oct 2016 - Dec 2019

University of Plymouth, United Kingdom

Graduated with Second Class Honors Upper Division

  • Databases and their Applications
  • Advanced databases and their applications
  • Network and System Administration
  • Software Engineering for the Internet using Java
  • Web Development Platforms
  • API Software Development
  • IT Legislation and Ethics

Certificate in Computer Science

Oct 2015 - Feb 2016

National Institute of Business Management

GCE Ordinary Level(O/L)

2012

CERTIFICATIONS & TRAINING

Developing a Google SRE Culture by Google

2024

Statistics by Stanford University

2022

Professional Experience

Operations Engineer

Oct 2020 - Sep 2022

Virtusa

  • Created Tableau dashboards improving business intelligence by 40% via predicting subscriber activity insights.
  • Developed and implemented innovative data models in Python/R, resulting in a 35% reduction in system load times while achieving optimal resource allocation across all operational processes.
  • Enhanced SQL query performance and administered Oracle databases to improve processing speed and data integrity.
  • Prepared daily, weekly, and monthly reports, providing actionable insights to support key decision-making and drive continuous improvement across teams and organisational initiatives
  • Spearheaded Mobile Number Portability (MNP) to ensure seamless network connectivity for 30M+ subscribers.
  • Optimized L2 support processes by collaborating with other network service providers to resolve service queries, reducing average resolution time by 20%.
  • Addressed high-priority customer inquiries (P1-P2) through direct email, Remedy and ServiceNow ticketing systems enhancing incident resolution efficiency while achieving monthly increases in satisfaction rate by 35%.
  • Automated daily routine tasks using scripts and CronJobs to cut manual workload by 40%.
  • Executed detailed analyses on operational errors and log files to pinpoint underlying problems, enhancing overall system stability which led to an increase in incident response speed by 25%.
  • Integrated DevOps methodologies and ITIL practices to enhance platform security and system safety, achieving a 35% reduction in vulnerability response times.
  • Streamlined application performance on Cloud servers, refining both Linux and Windows environments to achieve 30% faster load times across the infrastructure.
  • Coordinated cross-functional teams by creating change requests during deployments and upgrades to ensure configuration changes in the production environment.
  • Maintained on-call support to ensure 99.99% system availability during high-pressure scenarios.

Associate Infrastructure Operations Engineer

Feb 2020 - Oct 2020

Stepping Stone Advertising, New York, NY

  • Managed the BizTalk-based Data Management Tool (DMT) for seamless file transfers across McDonald's restaurants and enterprise systems worldwide; leveraged .NET, C#, and MS SQL to enhance data integrity.
  • Leveraged Microsoft 365 Business tools to streamline operational workflows and expediting issue resolution
  • Delivered L3 to resolving complex issues, managing system upgrades, and ensuring seamless operations, including new market onboarding.
  • Created 4+ design presentations and proposals a month for clients and account managers

Trainee Software Engineer

Nov 2019 - Feb 2020

Co-operative Insurance Company Limited

  • Engineered robust backend solutions to streamline operations for an insurance platform, resulting in consistent throughput exceeding 150 queries every single minute throughout peak usage periods.

Internship in Software Engineering

May 2019 - Nov 2020

IdeaCode Global (PVT) LTD

AFFILIATIONS AND MEMBERSHIPS

AFFILIATIONS AND MEMBERSHIPS

BCS

British Computer Society

IET

Institution of Engineering and Technology

Projects

Projects

  • All
  • UOP
  • Virtusa
  • UOG
  • Personal

Library Management System - JavaFX, Java Database Connectivity (JDBC) MVC architecture

Point of sale system - JavaFX, JDBC, SQL, Leyard Architecture

Pirets (Cross platform game) - QT C++

Distributed Library Management System - CSS, Java, JavaScript, HTML, SQL

Packer - Private Parking Management - Innovated a parking management solution consisting of two Android apps for drivers and facility owners. The app combined payment features that reduced transaction times by 75%

Spearheaded the optimisation of MNP for MTN South Africa, automating workflows that boosted efficiency by 25% and managing databases for 30M+ subscribers. Diagnosed issues from an average of 150+ Tickets per week, contributing to enhanced user experience through robust L2 support practices that drove improved client retention rates overall.

Executed the global data transfer solution for 34,000+ McDonald's locations worldwide. Collaborated with the Enterprise Application Integration (EAI) Service to enable seamless end-to-end datamovement across platforms, improving operational efficiency and ensuring data consistency.

DataCraft for Business: Applied Analysis Toolkit

Decoding Spam: A Machine Learning Journey to Detect and Defeat Fraudulent Emails

Comparative Analysis of Machine Learning Models for Spam Detection

Skills & Expertise

Skills & Expertise

Explore my technical toolkit across diverse domains, showcasing my expertise in operating systems, programming, database management, cloud tools, analytics, and more.

Operating Systems

Efficient in handling various operating environments to ensure seamless performance and system reliability.

  • Windows
  • Linux
  • Mac OS

Programming Languages

Proficient in multiple languages, adept at building robust applications and automating processes.

  • Python (Pandas, NumPy, SciPy, Matplotlib, PySpark, TensorFlow)
  • R (ggplot2, shiny)
  • Bash, Shell Scripting
  • PHP, JavaScript

SQL/Database Management

Experienced in SQL queries and database architecture, optimizing performance and ensuring data integrity.

  • SQL (SQL Server, MS SQL, PostgreSQL, SnowSQL)
  • Oracle Database

DevOps & Cloud Tools

Hands-on experience in cloud platforms and DevOps tools to streamline deployment and manage infrastructure.

  • Docker
  • Kubernetes
  • Git
  • Apache Tomcat
  • AWS
  • Azure

Infrastructure as Code

Efficient in Infrastructure as Code practices to manage and provision computing infrastructure through scripts.

  • Terraform

Analytics & Visualisation

Expertise in data analysis and visualisation tools to derive actionable insights and present data effectively.

  • Tableau
  • Jupyter Notebook
  • Microsoft Excel (VLOOKUP, Pivot Tables)

ERP Systems

Familiar with ERP systems to streamline business processes and enhance operational efficiency.

  • Microsoft 365
  • Dynamics Business Central

Other Tools

A versatile toolkit including various tools for debugging, service management, and big data processing.

  • Active Directory
  • MS BizTalk
  • SRE
  • API Debugging
  • ServiceNow
  • Hadoop
Contact

Let's Connect!

I truly appreciate you taking the time to visit my portfolio. If you have any questions, opportunities, or just want to say hello, I’d love to hear from you! Whether it's about collaborating on a project, discussing ideas, or exploring new challenges, feel free to get in touch. Your connection is valued, and I look forward to engaging with you to share experiences and insights that can make a difference.

Address

London, United Kingdom

Call Me

+4473 9275 6406

Email Me

randulajayarathna@gmail.com

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