Rajasekar C

Data Engineer | Systems Builder

Rajasekar C

Data Engineer with 5+ years of experience in SQL, Python, and large-scale data systems. Built and maintained pipelines processing ~50M records daily, and now focused on full-stack applications, generative systems, and rapid prototyping with AI-assisted workflows.

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What I Do

Build reliable systems that turn complexity into usable products.

  • Build data pipelines and backend systems
  • Rapidly prototype applications using AI-assisted workflows
  • Develop generative and interactive systems
  • Debug production issues and optimize performance

Experience

Hands-on engineering across scale, delivery, and production operations.

Independent Data & Platform Engineering

Applied product, backend, and automation work

Jun 2025 - Present
  • Built multiple web applications and generative systems using AI-assisted tools (Cursor, Copilot)
  • Developed API-driven data pipelines using Python for ingestion and transformation
  • Designed Redis-based caching and indexing layers for performance optimization
  • Implemented cron-based workflows for automated background processing
  • Rapidly prototyped and deployed multiple web and creative applications

Digit Insurance

Data Engineer

Nov 2023 - Jun 2025
  • Built automation tools reducing issue resolution time from ~30 minutes to under 1 minute
  • Designed and maintained ETL pipelines processing ~50M records daily
  • Implemented SQL workflows for policy renewals and customer notification systems
  • Resolved 4000+ production issues and reduced backlog from 600 to under 70
  • Built internal tooling using Flask and Pandas to improve operational efficiency

Appzwork

Software Engineer

Jan 2020 - Nov 2023
  • Developed SQL-based solutions for banking and insurance clients
  • Built complex queries, joins, and stored procedures for analytics systems
  • Handled production debugging, deployments, and incident resolution
  • Supported database maintenance, patching, and recovery operations

Projects

Recent systems spanning full-stack platforms, generative media, and apps.

Valipokkann Platform

Live site GitHub
  • Built full-stack artist platform with React SPA and serverless backend
  • Designed dual CMS architecture and media processing pipelines
  • Implemented dynamic UI systems for content and artwork display

Onchain Rugs

Live site GitHub
  • Developed generative NFT system with Redis-based indexing and caching
  • Built scalable metadata and activity tracking architecture

Free Notes (iPad App)

GitHub
  • Designed note-taking system with geometric recognition
  • Built layered architecture for structured document interaction

Madraschecks

Live site
  • Checklist-driven verification flows for specialty retailers
  • Backend orchestration that combines Redis caching and API routing

Skills

Practical tools for data engineering, backend delivery, and rapid prototyping.

Core

  • SQL
  • Python
  • JavaScript

Data & Backend

  • ETL pipelines
  • PostgreSQL
  • Redis
  • API integration

Tools & Workflow

  • Git
  • Linux
  • Cursor (AI-assisted development)

Familiar

  • Snowflake
  • Basic Spark

Education

Formal engineering training that backs the hands-on production work.

B.E.

CGPA: 7.17 (2012)

RMK Engineering College

HSC

87.4% (2008)

Infant Jesus MHSS

SSLC

86.5% (2006)

St. Mary's Matriculation

Links & Contact

Open to conversations about data systems, backend engineering, and product builds.

Professional Site rajasekar.work GitHub github.com/innovinitylabs LinkedIn linkedin.com/in/rajasekar-c Email rajasekarc1142@gmail.com Creative Work valipokkann.in