PROFILE:

• Around 14 years of hands - on software development lead experience in open source frameworks combined with up-to-date knowledge of the latest technologies.
• Programming Technologies: Object-Oriented Programming Java,Kotlin, Aspect-Oriented Spring AOP, OO design Java generics, design patterns, advanced Java idioms and advanced programming techniques such as DI, IoC or AOP.
• Hands on experience in Service Oriented Architecture SOA environment using latest J2EE web services stack for SOAP JAX-WS /REST JAX-RS - Jersey,CXF, RestEasy with large-scale high-traffic web-based online services since 2004.
• Hands on experience in Big Data/Analytics: Hadoop 2.x Ecosystem(MR, Pig, Hive, Hbase, Spark),Spark Ecosystem(Spark SQL,MLlib).,Streaming/Messaging: Apache Storm and Kafka
• Deep Learning/ML: (As part of Stanford ongoing AI )ML basics & optimization techniques: Gradient descent optimization, Dropout, Backpropagation; linear classification, logistic regression, KNN, SVM, Softmax ;Deep Learning techniques: CNN, Semantic segmentation, RNN/LSTM/GRU, GAN;NLP techniques: Word2vec, Seq2Seq and Attention; Libraries: Numpy, Pytorch,Tensorflow
• Experienced in applying OO design best practices, Java generics, design patterns, advanced Java idioms and advanced programming techniques such as DI, IoC or AOP.
• Experience in mentoring junior and leading successfully by example.

TECHNICAL SKILLS:

Spring Boot, Spring: Core, MVC, Data, Security, Batch, Struts

Cloud Platforms /Virtual Container tools: AWS,Google, Azure,PCF, Apigee,Swagger,Docker

Big Data Stack: Hadoop Ecosystem Mapreduce,Pig,Hbase,Hive,Spark

Microservices, REST JAXRS: Jersey, Apache CXF,Rest Easy, SOAP, Apache CXF,Apache Axis

Persistence J2EE frameworks: JPA/Hibernate 3.x,EJB 1.1,2.0,,2.1,3.0, JDO Kodo Deep Learning/Machine Learning & Libraries(As part of AI from Stanford)

ML basics & optimization techniques: Gradient descent optimization, Dropout, Backpropagation; linear classification, logistic regression, KNN, SVM, Softmax ;Deep Learning techniques CNN, Semantic segmentation, RNN/LSTM/GRU, GAN;NLP techniques Word2vec, Seq2Seq and Attention; Libraries Numpy, Pytorch,Tensorflow

Build, Continuous Integration, & version control tools: Ant, Maven, Gradle,sbt, Jenkins,Fortify,Corbertura,GIT,SVN

Relational: Oracle, Sybase,SQL Server ;Non Relational Hbase,MongoDB;Data flow Pig

EXPERIENCE:

Confidential, San Jose, CA

Senior Lead Developer

Responsibilities:

• Designed, developed, tested & deployed on REST Device fingerprint & several REST Risk and fraud detection backend Java Spring boot micro services and several mini projects.
• Wrote Hadoop MapReduce backend code for device fingerprint service and improved its performance. Tuning resulted in about 40% performance improvement. Further improvement by delegating some tasks & rewriting using Spark.
• Wrote spring batch scheduled jobs for homegrown monitoring services (health check & analytics).
• Developed a homegrown Analytics monitoring tool for health check of micro services with hourly logs as inputs using various pig /python scripts.
• Developing, refactoring, designing, enhancing and sustaining existing Risk Analytics application based on business requirements.
• Implemented code for SAML 2.0 SSO using spring security. The code was then refactored & donated to be used as common library for other teams.
• As a side project, developed, trained, tested and optimized Loss & increased accuracy of machine learning models for fraud detections & other requirements using Convnets (Deep CNN) as well as traditional SVM, KNN for Business Analysts team.
• Unit testing using Mockito and code coverage cobertura

Confidential, Menlo Park, CA

Lead Developer

Responsibilities:

• Revamped the existing legacy tuxedo web services architecture to be replaced with JWS Java spring SOA architecture for E* Confidential Complete Investment Account application which became implementation for all other E* Confidential departments. Visible performance improvement in the new architecture with lessened production support.
• Designed and developed hands-on SOAP & Restful SEI/web services using Spring Apache CXF.
• Designed and developed hands-on ORM layer wrapper using Hibernate JPA with complete DB schema redesigned.
• Developing and exposed Restful API with mashery integration security layer for partner API as well as SOAP using JAX-WS Spring for smart Interactions.
• Pig scripts to generate certain analytics reports for Account opening statistics.
• Performance and tuning of problematic code portions.

Confidential, Foster City, CA

Sr. Consultant

Responsibilities:

• Developed IDM services using SOAP web services to expose IDM APIs.
• Developed the core java multithreaded handler for the server/client socket channel for IDM.
• Performance analysis of IDM Synchronization functionality for LDAP data using JProfiler. Implemented LDAP Connection pool which resulted in about 47% performance improvement for IDM Synchronization functionality. It also improved CPU usage.
• Developed XML parsing utility classes using dom4J for request/response.
• Took lead role in making sure that code coverage was close to 100% using unit testing (EasyMock) and continuous integration using maven with Jenkins.

Confidential, Pittsburgh, PA

Lead Engineer

Responsibilities:

• Took key role in designing SOA solution to integrate PacifiCare health Systems’ (acquired) legacy system with Confidential.
• Developed the SOA façade interface framework for web service consumption
• Developed various Spring MVC JSR 168 portlets, controllers and integrated them with Façade interface for web .
• Used Ajax scripting library of BEA portal server to develop adaptive portlets Ajax based .

Confidential, Matawan, NJ

Software Engineer

Responsibilities:

• Developed web services and clients implementations for Order Acknowledgement and ESD using open source Axis Java web services & developed the SOA façade interface framework for web service consumption.
• Developed EJBs stateless session beans, Message Driven Bean acting as receiver for external ALCHEMY system to receive symbology updates.
• Developed a core java multithreaded class model for the application to generate some CSV data files (Instinet Group).
• Re-Wrote shell script Korn shell which would retrieve data from legacy MIDWAY an Oracle based system in the form of csv files from oracle views and update legacy CIS system using stored procedures. (Instinet Group).
• Performance Enhancement: Re-Wrote oracle views and stored procedures. (Instinet Group).

Confidential

Software Engineer

Responsibilities:

• Using Java Excel API - open source Java API to develop feature to generate reports as Excel spreadsheets from web requests from order, rate & billing portal (P&O Nedlloyd).
• Developed UI screens using Struts JSPs, action and forms for mortgage portfolio system that in turn delegated to EJB stateless session beans (BOA).
• Unit testing using Junit and build scripts using ant (all projects).