DEV ANAND
JAYAKUMAR.

I am a Data Analyst
applying Artificial Intelligence
to automate analytical workflows and improve efficiency.

Driving loyalty management, personalised targeting campaigns, automation, KPI and financial reporting, and operational improvements with SQL, Python, Excel, Power BI, and Power Automate.

See my work → Download CV
Personalized campaign targeting Financial reports and KPIs Career timeline Adapting to AI and ML
Lifted participation rate through personalized targeting criteria.

About Me

Dev Anand Jayakumar

Hey! I'm Dev, a data enthusiast and analytics professional based in Dublin with over four years of experience transforming customer, campaign, operational, and financial data into insights that stakeholders can use.

I've worked across campaign analytics, financial and KPI reporting, dashboard development, data validation, query optimisation, and process automation at Mu Sigma and Tata Consultancy Services. My experience includes leading a five-member team delivering 20+ personalised campaigns per month for a $2.5 million AUD loyalty account, contributing to a 17% increase in member acquisition and a 24% reduction in lapsing members.

I completed my M.Sc. in Computing in Data Analytics at Dublin City University and currently work as Operations Specialist at Covalen, supporting AIB's card-payment operations. I am now seeking Data Analyst, Campaign Analyst, Business Analyst or Data Engineering opportunities in Ireland.

M.Sc. Master's Computing in Data Analytics DCU, Dublin
B.E. Bachelor's Computer Science SEC, India

My Skills

What I bring to the table

Four years of hands-on analytics, from SQL and Python for data preparation and automation to Power BI for reporting, experimentation, and machine learning model development.

Data & Programming
SQL
Python
Python
Pandas
Pandas
NumPy
NumPy
BI, Reporting & Visualisation
Power BI
Power BI
Tableau
Tableau
Excel
Excel
Power Query
Dashboarding
Dashboarding
Executive Reporting
Executive Reporting
Analytics & Machine Learning
KPI Tracking
KPI Tracking
Campaign Analysis
Campaign Analysis
Financial Analysis
Financial Analysis
Trend Analysis
Trend Analysis
A/B Testing
A/B Testing
Machine Learning Model Building
Machine Learning Model Building
Platforms, Cloud & Automation
Snowflake
Snowflake
Azure
Azure
Power Automate
GitHub
GitHub

Experience

Where I've worked

Experience across banking operations, loyalty and campaign analytics, data quality, reporting, and large-scale customer data analysis.

Oct 2025 – Present Limerick, Ireland

Customer Operations Specialist

Covalen (CPL) · AIB Operations
Banking Operations
  • Analyse and manage 30–40+ daily card-payment cases using TSYS, Visa Access, and Arcot, validating customer data and investigating transaction discrepancies while following GDPR and operational controls.
  • Collaborate with 3–4 internal teams to investigate payment issues, support refunds, and ensure accurate processing, timely resolution, and SLA adherence.
Impact Applied transaction analysis and operational controls to support accurate and timely banking operations.
Aug 2022 – Sept 2023 Bengaluru, India

Senior Data Analyst

Mu Sigma · Flybuys Loyalty Programme
Campaign Analytics
  • Led a five-member team delivering 20+ personalised campaigns per month for Flybuys, supporting a $2.5 million AUD loyalty-programme account.
  • Analysed customer purchase behaviour to develop a global inter-purchase-interval trigger, contributing to a 17% increase in member acquisition, a 24% reduction in lapsing members, and a six-day reduction in average purchase interval.
  • Supported the design and implementation of a pre- and post-campaign transformation framework, delivering an 80% efficiency improvement through standardised targeting criteria, campaign automation, and near-real-time reporting.
  • Built reusable Power BI data models, calculated columns, and DAX measures to report campaign volume, sales performance, audience reach, and partner-level KPIs, reducing dependency on manual reporting.
Impact Converted loyalty and customer-behaviour data into personalised campaigns, automated reporting, and measurable improvements in member engagement.
May 2019 – July 2022 Chennai, India

Data Analyst

Tata Consultancy Services
Data Analytics
  • Used SQL and Python, including Pandas and NumPy, to clean, transform, validate, and analyse customer and transaction data, ensuring reliable datasets for reporting and business analysis.
  • Analysed complex datasets covering 9 million+ users to identify trends, patterns, and data gaps supporting business decision-making.
  • Reduced Snowflake query runtime by 30% by developing and optimising SQL queries using selective clustering keys, materialised views, and improved micro-partition pruning.
Impact Improved data quality, analytical reliability, and query performance for large-scale reporting and analysis.

Projects

Things I've built

/ 01
Aspect-Based Sentiment Analysis
Compared traditional machine learning, lexicon-based methods, BERT, RoBERTa, and GPT-based approaches to identify review aspects and classify sentiment.

Value: Demonstrates Python, NLP, transformer models, model comparison, preprocessing, and evaluation.
Python NLP BERT RoBERTa Machine Learning
View on GitHub →
/ 02
BlinkIT Grocery Sales Dashboard
Built a Power BI dashboard to analyse sales performance across products, outlet types, locations, and operational KPIs using structured retail data.

Value: Demonstrates Power BI, SQL, Excel, data modelling, KPI analysis, and business storytelling.
Power BI SQL Excel Dashboarding KPI Analysis
View on GitHub →

Case Study

Beyond the day job: ideas I'm exploring

Tenant & Landlord Rating Platform for Fairer Housing

Problem

Ireland's rental market creates friction on both sides — tenants face opaque conditions, and landlords struggle to find reliable matches.

Idea

A rating and matching platform where property listings are shown only to applicants matching the landlord's criteria, and ratings surface trust on both sides.

Goal

A fairer, more data-driven rental ecosystem — reducing exploitation and helping both sides make better calls before signing.

Status

Working through the data model and implementation plan. Updates coming soon.

Contact

Let's talk

Looking for an analyst who ships? I'm currently open to Data / Campaign / Financial / Business Analyst or Data Engineering roles in Ireland.

📧 devanand765@gmail.com

📞 +353 89 959 0574

📍 Dublin, Ireland

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