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Legolasan/README.md

πŸ‘‹ Hi, I'm Arun Sundararajan

Product-Oriented Technical Operations Leader with 10+ years operating at the intersection of Support, Engineering, and Product within cloud-based data platforms.

I translate production failure patterns and enterprise escalations into structured product improvements. I care about how systems actually behave in the real world, not just how they look in architecture diagrams.


🎯 What Drives Me

I operate in the "messy middle" between customers and code:

  • πŸ” Pattern Recognition – Spotting recurring failure modes across 1000+ customers and converting them into reliability initiatives
  • πŸ›  Product Thinking – Translating support escalations into actionable roadmap items that prevent future issues
  • πŸ“Š Data-Driven Decisions – Using production telemetry, MTTR trends, and customer impact data to prioritize engineering work
  • πŸŒ‰ Bridge Building – Aligning Support, SRE, Product, and Engineering teams around shared reliability goals

TL;DR: I turn "why did this break?" into "how do we make sure it never breaks again?"


πŸ”§ What I Work On

πŸ— Data Engineering & ELT Platforms

  • Distributed data pipelines (ingestion, transformation, destinations)
  • Source connector reliability (PostgreSQL, MySQL, SaaS APIs)
  • CDC, schema evolution, offset management
  • Handling real-world edge cases: rate limits, network partitions, zombie connections

🚨 Support Operations & Incident Management

  • 24x7 global support operations for cloud ELT systems
  • P0/P1 production incident command & resolution
  • SLA/MTTR optimization through automation and process improvements
  • Enterprise escalation management

🧰 Automation & Tooling

  • AI-assisted ticket classification & RCA extraction
  • Operational dashboards & observability improvements
  • Knowledge base deflection strategies
  • Self-service diagnostic tools

πŸŽ“ Knowledge Sharing

  • Documentation, code snippets, utilities
  • Real-world debugging scenarios
  • Lessons from production incidents

🧠 Technical Toolkit

Languages & Scripting

  • Python – automation, APIs, data processing, PySpark
  • SQL – PostgreSQL, MySQL, Snowflake, Redshift, BigQuery
  • Bash – scripting, operational glue, incident response

Data Infrastructure

  • Databases: PostgreSQL, MySQL, Snowflake, Redshift
  • Streaming: Kafka, Debezium, CDC patterns
  • Cloud Platforms: AWS, GCP, Azure environments
  • ELT Tools: Experience debugging distributed ingestion systems

APIs & Integrations

  • REST APIs, OAuth flows, webhook systems
  • Rate limiting, pagination, retry strategies
  • Third-party connector troubleshooting (20+ integrations)

Operations

  • Docker, CI/CD pipelines
  • Incident management frameworks
  • RCA documentation & post-mortem culture
  • Observability & monitoring strategies

πŸ›  Selected Work & Experiments

πŸ“Š Support Operations Analytics

  • Automated ticket classification using LLMs
  • RCA pattern extraction across 10,000+ production incidents
  • Integration with Google Sheets for stakeholder reporting

πŸ”„ ELT Pipeline Debugging

  • Source connector edge case handling (auth failures, schema drift, CDC lag)
  • Data consistency validation across sources and destinations
  • API rate limit & network timeout resilience patterns

πŸ€– AI-Powered Tooling

  • Ticket summarization & issue categorization
  • Focus on deterministic outputs and guardrails (not "magic")
  • Reducing support engineer toil through intelligent automation

πŸ— Infrastructure Reliability

  • Production debugging: timeouts, data loss, retry storms
  • Root-cause analysis over symptom firefighting
  • Implementing preventive measures based on failure patterns

🧭 Engineering Philosophy

Simple > Clever
Observability before optimization
Evidence over hype
Root causes over symptoms
Pragmatism over perfection

Core Beliefs:

  • Systems fail in ways you didn't anticipate. Plan for it.
  • The best feature is the one that prevents customer pain.
  • Support engineers see patterns product teams don't. Listen to them.
  • Reliability is a product feature, not just an SRE concern.
  • Good documentation prevents more incidents than good code.

πŸ“ˆ GitHub Stats

GitHub Streak

GitHub stats

Top Languages


πŸ“¬ Connect With Me


"The best code is the code that never had to be written because you fixed the root cause."

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