Oct 2018 – Dec 2023 · 5 yrs 2 mos · Bengaluru Area, India · Hybrid

• OAX: Oracle Analytics for Applications
• Working on tuning Analytical Decks/Visualizations along with Permissions management and data validation UIs
• ● Tuned Knockout JS code resulting in UI step RT reduced from 209s to 30s
• ● Root-caused High UI RT due to heavy JS activity on the main thread. Since it could not be deferred, created a
• prototype with a dummy operation in the background while the user is doing another operation which reduced
• RT from 7.5s to 4.6s
• ● Observed high native mem usage in JVM. Root-caused the issue through code analysis to zip deflater not
• explicitly closed. Created prototype which brought down JVM mem usage from 26 GB to 3 GB.
• ● Detected lack of pagination in backend requests through code analysis resulting in high RT in UI and high mem
• usage of the server process
• ● Observed high query RTs and recommended more stringent filters to reduce the amount of data being pulled.
• DV: Data Visualization
• Working on long term performance enhancements along with new features in Data Visualization product in Oracle
• Analytics Cloud to gain edge over competitors.
• ● Achieved upto 10x performance improvements in RTs for DV projects by various query and code tunings
• ● Created prototype to parallelize parsing of a CSV file and upload to archive which reduced UI time by 40s
• ● Optimized CSV parsing to reduce Column type detection which reduced RT by 60s

May 2013 – Sep 2017 · 4 yrs 4 mos · Bangalore

• As part of BI Performance team, worked on many new features and optimization in Oracle’s BI products, Developed utilities and Oracle wide dashboards for monitoring cloud customers
• Development
• Complete design and development of P1 Dashboard (used by management to monitor critical Oracle cloud customers) using Oracle VA, Java, Shell scripts and PL/SQL
• Complete design and development of a server reservation system for the team using Java, jquery, Javascript etc.
• Created several automation and utilities using Java/Shell scripting to help team with day to day and project specific work.
• Product Performance
• led the complete performance effort of a new product called DV Desktop (Tableau and PowerBI competitor). More than a 100 bugs were opened for this product and led to significant performance, stability and usability improvements for the end user.
• Analysis
• Application profiling using Jprofiler, Solaris Studio or Intel VTune and pointing out hotspots to developers along with suggestions for improvements.
• Thread dump analysis
• Heap dump analysis using MAT and GC analysis using PMAT
• Client side analysis using chrome js profiler and fiddler.
• Tuning Highlights
• High startup time of desktop app due to indexing operation running at every start. Got need based indexing implemented.
• High startup time of desktop app due to unnecessary components getting started. Got delayed startup implemented.
• High RT for applying multiple filters due to query being sent for every filter option. An option to apply changes on demand was implemented based on my suggestions
• High CPU root caused to fetching one record at a time. Got bulk row fetching implemented
• Testing
• Involved in performance testing of OBIEE On-Premise and Cloud using Oracle ATS.
• Enhanced test suite based on observations of customer behavior in production
• Batch processing applications

Sep 2017 – Oct 2018 · 1 yr 1 mo · Earth

• Took a one year break from work during which I traveled to 6 countries, completed certification in Scuba diving, Skydiving and Java, took Horse riding and Kannada classes etc

Aug 2010 – Apr 2013 · 2 yrs 8 mos · Bangalore

• Development
• Involved in development and support of APM (Application Performance Monitor) a Enterprise wide J2EE based tool for monitoring performance of various Fidelity websites
• Have automated various monitoring and data entry/analysis requirements for the team using Java
• Testing: Involved in performance testing of various applications like
• Web applications like websites and forums
• Siebel CRM based application
• Batch processing applications
• Capacity Analysis: was handling the complete Capacity analysis effort of a component being used on Fidelity.com which involves
• Test Strategy and planning for new implementations
• Testing, Tuning and analysis of projects
• Insuring overall stability and responsiveness of the application
• Anticipating failures and testing and implementing buissness continuity techniques
• Tuning: Involved in analyzing and tuning application servers
• JVM GC tuning: Usage of different collector algorithms to reduce pause times, heap and generation sizing, Usage of concurrency algorithms etc
• Application Tuning: Memory leak detection and analysis, Heap dump analysis, basic application profiling and thread analysis, JDBC connection pool optimization and sizing.