Analyst - Jishma Shareena

Hello there! I'm an experienced Mainframe Application Analyst in the retail supply chain domain. Currently pursuing an MBA in Business Analytics at IIM Sambalpur, I am passionate about blending data-driven decision making with strong technical foundations to solve real-world business challenges.

Experience

Mainframe Application Analyst

Feb 2021 - July 2025

Tata Consultancy Services, Cochin

Client: Boots UK

Led end-to-end incident management for 15–20 critical retail and supply chain applications of Boots UK (£5.5B company)
Directed peak-season operations for 3 consecutive years, coordinating cross-functional global teams for uninterrupted performance.
Conducted root-cause analysis on applications including forecasting, replenishment, and stock systems to design permanent process improvements.
Built automation programs integrating business logic into mainframe workflows, reducing manual effort by 80%.
Partnered with global clients and third-party vendors to maintain system stability and align IT performance with business goals.
Delivered data-driven insights through KPI and batch-performance reporting for strategic decision-making.

Skills

Programming Languages & Analytics

Python, C, C++, HTML, CSS, JavaScript
Flask, COBOL, JCL, DB2
Tableau, SQL, Excel, Power BI, PowerPoint

Mainframe & Operational Skills

Mainframe Operations, Batch Job Management
Helix, Root Cause Analysis
File Transmission: NFM, MQ, FTP/SFTP
VSAM, IMS, Easytrieve, CICS

Soft Skills

Problem-solving, Analytical Thinking
Leadership & Collaboration
Communication & Presentation
Time Management & Adaptability

Education

MBA-Business Analytics – Indian Institute of Management Sambalpur
B.Tech in Information Technology (2020) – Government Engineering College, Trivandrum
Higher Secondary (2015) – PKMMHSS, Edarikode

Achievements

RSCM Platform Level – Star of the Month Award
Early Promotion at TCS
Consistently ‘A’ band rated
Springer Publication: IDS for IoT Botnets using Deep Learning (2020)
Hostel Secretary – GEC Barton Hill(2019-2020)

Projects

Sales & Customer Dashboard

Tools: Tableau, Excel

Interactive Tableau dashboard showcasing sales and customer insights for smarter business decisions View Dashboard

IoT Botnet Intrusion Detection System

Tools: Python, Deep Learning

Developed a deep learning-based IDS to detect IoT botnet attacks; published in Springer (2020). View Publication