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Software Developer Java Scala Apache Spark

Iași, IS, Romania
February 20, 2018

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Ionut Maxim

Scala/BigData Developer


Skype ID: ionut.maxim

Phone: +40-746-***-***

Developer specialized in building systems for high volume/fast data in a distributed environment. I like to analyze and create solution that are efficient, scalable and always interested on understanding the big picture and see how my solution is fitting in.

Technical expertise

Java, Scala

Apache Spark

AKKA http

Hadoop ( Cloudera ), Hive, Impala

Spring, Spring Data

PostgreSQL, OracleDB, Hbase, Cassandra

REST, XML, JSON, WebServices, SOAP

Docker, AWS

JBPM, Drools

SBT, Maven, Jenkins, CD/CI


Scala/BigData developer at UniCredit

March 2015 – March 2018

Implement from scratch, Spark pipeline (ETL, Scala based abstraction, complex algorithms for KPI computation and CI/CD pipeline).

Redesign old Spark jobs suite to add code clarity, better abstraction reduced the delivery period.

Design and established the process for CI/CD pipeline.

Implement generic tasks and bug fixing on Java EE application, new REST endpoint and business logic.

Implement new functionalities on Akka http modules ( add REST endpoint, swagger documentation improvement, new flows)

Technologies used: Scala, Java, Apache Spark, Akka http, Hadoop ( Cloudera ), Hive, Impala, Yarn, Solr, Hbase, Cassandra, PostgreSQL, Jenkins, Swagger, JaxRS, Bash.

Forecasts generator based on weather data - freelancing

September 2013 – January 2014

Delivered a full implementation and installation of a web base application Aggregate files/data from FTP and REST web services and displayed the information with HeightCharts in a web interface. The application offered support for managing input sources, users, computation formulas, notification management.

Technologies used: Spring MVC, Spring Data, Spring Security, Timers, Hibernate, Log4j, REST (Spring WS), PriceFaces, Metro UI CSS JodaTime, Javascript, JQuery, HeightCharts

JavaEE Developer at SoftVision

January 2013 - March 2015 (2 years 3 months)

I have been involved in tree project of the company:

Java REST Controller for an SDN application: EJB, JPA, REST, JUnit, HornetQ, InfiniSpan, JBoss, Oracle.

Web application for a gaming company: Spring MVC, Spring Data, Spring Security, REST, Hibernate, Struts, JavaScript, jQuery, Apache Axis, Tomcat5, Microsoft SQL.

Web and backend OSGI bundle: JavaSE, GWT.

Knowledge based system - freelancing

February 2012 – February 2013

I developed complex system that could be managed in an automatic way throw Drools rules. A web based application that allow creating, managing and automatically deploying a Drools rules package. The rule are package is used in the application as a decision engine for the content presented.

I configured and deployed the full environment in AWS and Redshift

Technologies used: Java, Drools, MySQL, Tomcat 7, RichFaces, JavaScript, JQuery, Log4j.

Java Developer at MIND CTI

July 2011 - January 2013 (1 year 7 months)

Java developer in a R&D team for a CRM dedicated to telecom clients. I developed JBPM Workflows, JSF pages and the business logic to glue them.

Technologies used: Java, JBPM, JavaScript, EJB, JSF, JSP, JBPM, Oracle, JBoss, jQuery, CSS, XML.

Project Manager at Arhipelago

November 2009 - July 2011 (1 year 9 months)

Managing and developing two main products of the company and I managed and sale B2B services, attended to conferences and events to promote the business. I have also been involved on some technical activities: design and implementation HTML, CSS, JavaScript), design/implement email for marketing materials, website database tuning, SEO research and analysis and a new strategy for increasing website traffic.


Technical University Gh. Asachi” from Iasi

Bachelor's degree, Automation Engineer Technology/Technician, 2004 - 2009

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