Jan 2018 – Nov 2019 · 1 yr 10 mos · Bangalore

Jul 2016 – Present · 9 yrs 8 mos

• One of the founding members who researched, conceptualized and developed Carbon Data a lakehouse based on Spark from scratch.
• Ensuring design of key features in Community.
• Guide, review and merge contributions to git.
• Github Profile@https://github.com/gvramana

Sep 2013 – Dec 2018 · 5 yrs 3 mos · Bangalore

• Architect and Committer for Carbondata, a distributed, multi dimensional store and high performance execution open source engine based Spark. Work involves
• Research and development of distributed BI and OLAP platform for high performance and scalability.
• Technologies working on include Spark, Hadoop, Yarn, Hbase, Hive.
• Enhanced spark for supporting high performance analytics engine.
• Key Contributions:
• Converted stand alone query and data load engines to distributed systems using spark.
• Proposed Architecture, also prototyped and designed for performance, concurrency and scalability.
• Delivered high performance engine many times faster than SparkSQL using parquet.
• Designed and contributed to IUD (Insert, Update and Delete) features to Spark based on CarbonData.
• Designed and contributed to Secondary Index support to Spark based on CarbonData.
• Responsibilities:
• Architecture for high performance, scalable and distributed systems
• Competitor analysis and prototyping.
• Communication with Head Quarters and US RnD teams for solutions
• Lead technical research team for design and implementation.
• Design and Code review to ensure quality.
• Performance bench marking and improvement.
• Coding key query flows and spark SQL.
• Requirement collection, analysis and interaction with product and platform teams.

Sep 2013 – Apr 2015 · 1 yr 7 mos · Bangalore

• Architect for Spark team for spark improvements and SQL data sources integration. Work involves
• Unified Access control for spark for Hive, Astro and other Data sources
• Unified Context for Spark
• Spark SQL, SQL99 standard compliance
• Architecture and Guide PL/SQL support for Spark.
• Spark Aggregation push down to data source API
• Contributor to Astro Spark-Hbase package.
• Key Contributions:
• Apache Spark Contributor,
• Established Spark team at Huawei India.
• In depth understanding of SparkSQL.
• Responsibilities:
• Spark opensource contribution
• Design and development of key features
• Mentor team on spark understanding and usage

Jan 2010 – Aug 2013 · 3 yrs 7 mos · Bangalore

• Technically leading for Embedded Linux Platform Development and Solutions team.
• Work involves,
• Linux platform customization for Embedded boards.
• Solutions for deployment, kernel debug, diagnostics and patching.
• Key Contributions:
• Developed Kernel Black box
• Contributed to Yocto and OpenEmbedded, represented Huawei
• Responsibilities:
• Technical Leader for Delivery team, responsible for realization and quality of deliverables.
• Version System Engineer (VSE) for delivery, owning requirements, design, technical milestones quality of the deliverables.
• Risk management.
• Communication with stake holders and customers for requirement analysis.
• Designed and development.
• Review of Code, test cases and automation
• Technical support to team in development, debugging and fixing the issues.
• Yocto opensource team participation.

May 2005 – Dec 2009 · 4 yrs 7 mos · Bangalore

• Worked on development of General Test Runner(GTR), an Integrated Development Environment (IDE) for TTCN3 language. Involved development of Graphical and Text based Editors, Compiler, Debugger and Intelligent Edit Assistance. GTR is used to for Protocol conformance testing.
• Responsibilities:
• Technical Leader for Pre-research team, responsible for feasibility and prototype.
• Technical Leader for Delivery team, responsible for Requirement collection, Design, Coding and End to End execution of project,
• Ensuring the quality of deliverables.
• Adaptation of Agile methodologies.

Nov 2003 – Apr 2005 · 1 yr 5 mos · Bangalore

• Worked in Nortel division on Network Simulators development