JAVA Developer with 10 years of total IT experience

4/2019 – offen

Genios provides a search engine based on ElasticSearch for German regional and economic databases
My role in the Project:
As a backend developer my daily work includes
• Extensive Data Processing from XML to Json using DOM/SAX parsers
• Thorough interaction with NoSql Mongo db to leverage upon the simplified json representation of data
• Data Modelling
• Daily Upload of Publisher’s Data, after processing, to Elastic Search
• Working on the development of Job Execution Framework for backend using technologies like Java 11.0 OpenJdk, Springboot framework and FreeMarker Template in MVC architecture for the associated inhouse frontend.
• Working on upgradation and maintenance for backend and frontend of GBI Genios’s web portal that was built using Groovy on Grails framework and uses GSP for frontend web pages.
• Working with REST APIs and HTTP Client for partial data Processing

Agile Entwicklung

11/2017 – 11/2018

End to end IoT Solutions for clients of Telemetric Products by Telic AG
My Role in the Project:
Within Scrum software development processes worked on the following modules:
• Forwarder: Defined REST API using Swagger.
• Developed a Feign based REST client that utilizes Rabbit MQ Message Broker to listen to queues for data and consumes REST API from the backend in order to forward it to backend.
Provided Spring retry facility and warps the call to REST API with CircuitBreaker for failover mechanism.
• Used hazelCast IMDG in order to share some data in distributed environment.
• Extended an XML based parser in order to parse some raw Telemetric data in flexible key value manner which was later sent to REST server using forwarder.
• Refactored and extracted a logbook module from an existing Project in order to provide a clean implementation using Springboot, that works as an independent REST server to read and write data on REST calls to Cassandra backend.
• Performed code reviews
• Also participated in a Scrum workshop

Agile Entwicklung

6/2014 – 5/2016

CTA-ACTL: Array Control - Cherenkov Telescope Array
Project Description: CTA’s Array Control is a SCADA system that aims to provide Controlling, Monitoring and Data Acquisition for the Cherenkov Telescope Array.
My Role in the Project:
• TMCDB Port to MySQL which earlier supported only Oracle HSQLDB, TMCDB uses XML DB as Configuration Data Base (CDB), which provides the schema for the corresponding tables in Relational Database Oracle and MySQL.
• Alarm Client and Logging Client: Alarm and Logging clients persist alarms and logs respectively to NoSQL Database. Clients also use the capping feature of Mongo DB to keep from preserving the data that has lost its relevance.
• Performed code reviews
• Gave presentation on OPCUA in OPCUA bootcamp in Milan, Italy.
• Gave presentation on TMCDB in European Southern Observatory Garching bei München

Agile Entwicklung