Hi, I’m Kailas, a Senior Data Engineer with 10+ years of hands-on experience building and scaling large-scale data platforms in banking and cloud environments. I’ve worked extensively with Apache Spark, PySpark, SQL, Databricks, Delta Lake, streaming pipelines, and data quality frameworks, solving real-world problems at scale — not just interview-level examples. Over the years, I’ve: Designed batch and real-time data pipelines handling millions to billions of records Optimized Spark jobs for performance, reliability, and cost Built data quality and observability frameworks used by compliance and analytics teams Mentored engineers preparing for job switches, promotions, and senior roles I understand why many strong engineers struggle in interviews — it’s usually not a lack of knowledge, but how answers are structured, explained, and communicated. How I can help you 🎯 Mock interviews with real Spark, SQL, and system design questions 📄 Resume reviews focused on impact, metrics, and ATS optimization 🧠 Career guidance for job switching, role clarity, and skill prioritization 📘 Digital resources for quick interview revision and confidence building My approach is practical, honest, and interview-focused — no theory dumps, no generic advice. If you’re preparing for a Senior Data Engineer role, planning a job switch, or feeling stuck despite experience, I’ll help you build clarity and confidence.