Vivek Kartha Vivek Kartha · UK Graduate Visa · No sponsorship required

Senior Data Analyst & Analytics Engineer building data systems that scale.

Six years building product analytics for a blockchain platform, within a decade across data and engineering. Now finishing an MSc Computer Science with a dissertation on fraud detection using dbt, BigQuery, XGBoost and SHAP.

CropBytes — User Growth
Feb 2019 – Dec 2024
2K
users when I joined
650K+
when I left
Hiring snapshot
Available
Part-time immediately
Full-time from October 2026
Right to work
UK Graduate Visa
from Sep 2026 · No sponsorship required
Role types
Senior Data Analyst
Analytics Engineer
ML Engineer
Location
UK-wide
Open to relocation
Sectors
Fintech · iGaming
Blockchain analytics · Regtech
Working familiarity
GDPR · data-quality
& governance practice

About me

Ten years across product, growth, and engineering.

Vivek Kartha portrait
Based in Aberystwyth, Wales, UK
English Bilingual · IELTS 8.0 (British Council, Feb 2025)
Languages Malayalam (Native) · Hindi (Working proficiency)

I work at the intersection of analytics, product, and engineering. Six years inside a high-growth blockchain platform taught me to turn messy behavioural data into decisions leadership can act on — the same problem at the core of UK fintech, iGaming, and product analytics teams.

I design KPI frameworks that survive scale, build behavioural segmentation that drives measurable engagement, and own the data quality standards that leadership decisions depend on. The Experience and Work sections below have the details.

Work

Shipped products, MSc research, and side explorations.

Commitly landing page Commitly dashboard Commitly commitments Commitly study groups Commitly create group Commitly profile
✓ Shipped Jan – May 2026 Agile Group Project

Commitly — Study Commitment Web App

Product Owner and backend developer in a seven-person Scrum team. Designed system architecture, led backend setup with FastAPI and PostgreSQL, built core commitment and group logic. Delivered 67 automated tests (100% pass rate) and an 8.8/10 UAT satisfaction score.

FastAPIPostgreSQLSQLAlchemyJWTPythonScrum
fraud_detection_pipeline.ipynb
● In progress Apr – Sep 2026 MSc Research Project

Fraud Detection Pipeline using Analytics Engineering & ML

End-to-end pipeline on the IEEE-CIS dataset (~590K transactions): BigQuery → dbt feature layers (staging / intermediate / mart) → Optuna-tuned XGBoost → SHAP explainability → Power BI dashboard, orchestrated with Airflow and containerised with Docker. Tests whether a structured dbt transformation layer measurably improves model performance over raw features, with an LLM layer summarising SHAP into plain-language risk explanations.

BigQuerydbtAirflowXGBoostSHAPPower BIDocker
ECI Lok Sabha 2024 — Overview ECI Lok Sabha 2024 — Party Results ECI Lok Sabha 2024 — State Turnout
968MElectors
65.79%Turnout
543Seats
↑ Ongoing 2024 – Present Personal Projects

Civic Tech Data Visualisation Dashboards

Interactive dashboards visualising Indian election and budget data. Raw data scraped and structured from ECI results portals, data.gov.in, and official government press notes. Built as single deployable HTML files — no server, no backend, no dependencies.

HTML/JSChart.jsD3PWA

Experience

A decade spanning systems engineering to analytics leadership.

Feb 2021 — Dec 2024

Senior Data Analyst

CropBytes Blockchain Gaming Platform · India
  • Owned analytics for a 650K+ user platform — KPI design, dashboards, data quality across product, engineering, and growth.
  • +60% engagement uplift via an in-app notification engine driven by behavioural segmentation.
  • Built leadership dashboards used by execs in quarterly OKR planning and roadmap prioritisation.
  • Acted as cross-functional accountability point for data quality and reporting standards.
BigQuerySQLPythonPower BIRedash
Feb 2019 — Jan 2021

Data Analyst

CropBytes Blockchain Gaming Platform · India
  • Early analytics hire — scaled platform from ~2K to 650K+ users (325× growth).
  • Built behavioural analysis, retention modelling, and cohort tracking from scratch.
  • Defined the company's initial KPI framework and reporting standards still in use today.
SQLMongoDBPythonCohort AnalysisA/B Testing
Mar 2014 — Apr 2018

Systems Engineer

electroSome India
  • Designed and maintained a custom ERP system covering sales, procurement, and employee management.
  • Led production payment gateway integration for live transaction flows.
  • The engineering foundation that shapes how I think about end-to-end data systems today.
PHPMySQLJavaScriptREST APIs

Education

MSc Computer Science, with a dissertation on fraud detection and machine learning.

MSc Computer Science
Aberystwyth University Wales, UK · Est. 1872 Distinction track · 76% (Semester 1)
Sep 2025 – Sep 2026
Dissertation

Fraud Detection Pipeline Using Analytics Engineering & Machine Learning

Tests whether disciplined analytics-engineering — structured dbt feature layers on BigQuery — measurably improves fraud-detection performance over raw inputs, evaluated with XGBoost and SHAP on the IEEE-CIS dataset. Supervised by Dr Bernie Tiddeman. The full build is featured in the Work section above.

BigQuerydbtAirflowXGBoostSHAPPower BI
Modules
Programming for Scientists Fundamentals of Intelligent Systems Modelling, Managing & Securing Data Agile Software Development Advanced Data Analytics Research Topics in Computing
Certification
Microsoft PL-300: Power BI Data Analyst — in progress

Tools I work with

End-to-end data stack from raw SQL to ML explainability.

Data & SQL

SQLBigQuerySnowflakedbtPostgreSQL

Languages

PythonJavaScript

Machine Learning

XGBoostOptunaSHAPFeature EngineeringModel Evaluation (AUC-ROC, PR-AUC)LLM Integration

Visualisation

Power BIPlotlyStreamlit

Engineering

AirflowDockerGitHub Actions (CI/CD)FastAPI

Practice

KPI DesignA/B TestingCohort & Funnel AnalysisRetention ModellingUser SegmentationProduct Ownership

Domain

Blockchain AnalyticsFraud DetectionProduct AnalyticsBehavioural Analytics

Available part-time now, full-time from October 2026.

I'd welcome a conversation about analytics roles — or anything interesting where data meets product.

References available on request · Typical response time within 24 hours