Senior Data Engineer
Rahul
Rajasekharan
Building the modern data stack — dbt, Airflow, PySpark, AWS. Automating pipelines, improving DX, and turning repetitive work into clean, automated systems.
Career
Experience
2012 – Present · 14 yrs 3 mos
Direct Line Group (DLG)
▶ NOWSr. Data Engineer.
Sainsbury's
Sr. Data Engineer.
Accenture
Sr. Data Engineer.
Cognizant
Data Engineer
Cognizant
Data Engineer
TCS
Data Engineer
Tech Stack
Skills
Production tools I use to design, orchestrate, and operate data platforms.
Languages & Core
Databases
Processing & Orchestration
Gen AI & LLMs
Storage
Infra
Quality & Governance
Modeling Patterns
Ops & Practices
Credentials
Certifications
Industry-recognised credentials across cloud and analytics.
AWS
▸AWS Certified Solutions Architect
▸AWS Practitioner
Airflow
▸Astronomer Certified DAG Authoring
▸Astronomer Certified Airflow Fundamentals
DBT
▸DBT Fundamentals
Snowflake
▸Snowflake Fundamentals
Deep Dives
Featured Projects
Selected builds with full write-ups — architecture, decisions, and lessons learned.
Personal Projects
VS Code extension for visual code flow exploration
AI-Generated Bedtime Stories for Kids
Self-Healing Data Pipelines with AI
Generate Git Commit Messages with Local LLMs in VS Code
DAG Schedule Visualisation & Scheduler Load Analysis
Data-Level Regression Detection for dbt
Python-Driven UI Extensions for Airflow
The Airflow DAG Quality Auditor
Cricket Analytics Platform — Snowflake + dbt + Airflow + Streamlit + Cortex
Spark Job & Stage Execution Analyzer
LLM-Powered Automatic Documentation for dbt
Bulk Pause / Unpause DAGs from the UI
Intelligent Task Retries powered by LLMs
Documentation Assistant for Data Engineers
AI Powered Personal Stylist
Contact
Let's work together
// reach out
rahrajlat@gmail.com