101 reputation

Piyush Mattoo

Some high voted answers:
How to pass parameters on onChange of html select
Remove substring from the string
java.sql.SQLException: No suitable driver found for jdbc:microsoft:sqlserver
Difference between plugins and Ruby gems?
Adding one month to current date?
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Back End: Core/Enterprise Java (Concurrency, Collections), Ruby, Advanced SQL, Hibernate, Spring(AOP, ORM, IOC, MVC, Security, Enterprise Services), Node.js, Redis, Stored Procedures, Load Balancing, Failover, Clustering, Relational/ No SQL databases.
Android Mobile Platform: Android SDK Group
Functional Programming: Groovy
SOA: Web Services (SOAP/REST), Spring REST and related stuff
Front End: Java FX, Java Web-Mobile Components, MVC (Spring, Struts), Ajax, Angular.js, HTML5, Native JavaScript, JFreeChart, RIA, Jquery, CSS, JSON, JSTL, Tag Libraries.
Networking,Administration: Linux Kernel Services/Configuration, Linux Filesystem/Package/Account Management, TCP/IP, NFS, Clustering, Opsview.
Big Data: Hadoop, MapReduce, HDFS, Pig, Hive, ZooKeeper, Sqoop
DevOps: Chef, Puppet, Ansible, ElasticSearch, Logstash, Kibana
Data Science: R, Github
Cloud: AWS, SaaS, PaaS,DBaaS, Docker, RedHat OpenShift
No SQL: Document-Oriented (MongoDb), HBase, Column Oriented (Cassandra)
Algorithms: Divide & Conquer, Graphs, Data structures(Heaps, Hash tables, Search trees), Randomized algorithms
Scripting: Bash, Shell, Excel VBA.
Search Engine Technology: Lucene
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OS: Ubuntu, Linux, Solaris, Windows.
SCM: Configuration Management(Maven ,Ant), Continuous Integration.