Gregor Ambrozic, Developer in Ljubljana, Slovenia

Gregor Ambrozic

Full-stack Developer

Location
Ljubljana, Slovenia
Toptal Member Since
November 30, 2015

Gregor is a team leader and full-stack software engineer with more than 15 years of work experience, mostly developing in Java/Grails/Angular and working with databases, directly or through ORMs like Hibernate or GORM. He has done work both in large companies and fast-moving small startups while being in roles of a senior software engineer, a freelancer, and lastly, a CTO. His passion are web applications powered by machine learning.

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Portfolio

FlyZUUM.com
Linux, Python, Angular, Hibernate, Gorm, Java, Grails
Freelance
Linux, AngularJS, jQuery, Grails, Hibernate, Spring, Java
Fieldoo.com
Linux, jQuery, MySQL, Spring MVC, Java

Experience

SQL - 15 yearsJava - 13 yearsHibernate - 9 yearsSpring - 7 yearsAngular - 5 yearsGrails - 4 yearsTeam Leadership - 3 years

Location

Ljubljana, Slovenia

Availability

Part-time

Preferred Environment

Git, Jira, Visual Studio Code (VS Code), IntelliJ IDEA

The most amazing...

...project I've led was to build an online private jet booking platform.

Work Experience

2014 - PRESENT

CTO

FlyZUUM.com
  • Led and managed a team of senior professionals in a development team.
  • Co-designed and developed a patent-pending AI/ML solution to analyze private jet traffic and provide pricing in real time.
  • Developed a fleet and booking management software for private jet operators in Angular/Java/Grails.
  • Developed an online private jet booking platform for customers in Angular/Java/Grails.
Technologies: Linux, Python, Angular, Hibernate, Gorm, Java, Grails
2014 - PRESENT

Software Engineer

Freelance
  • Created a Liferay intranet solution for a small sized company.
  • Worked on a web application for a private jet booking company.
  • Create a Magnolia-powered website with apps for a client company.
  • Developed a Spring MVC rolling road (trucks on trains) booking application for a client company.
  • Developed a Spring MVC back end for JWS/TLS communication with a system for fiscal verification of invoices.
Technologies: Linux, AngularJS, jQuery, Grails, Hibernate, Spring, Java
2012 - 2014

Software Engineer

Fieldoo.com
  • Developed core and new features of a sports social network website in Spring MVC.
  • Provided database optimization for a high-load website.
  • Created various web scrapers and crawlers to fetch data used for analyses.
  • Did ad-hoc engineering problem solving.
  • Cooperated with owners to help shape new features.
Technologies: Linux, jQuery, MySQL, Spring MVC, Java
2011 - 2012

Software Engineer

Epilog d.o.o
  • Developed new back-end features with Java and PL/SQL.
  • Implemented solutions on-site with customers.
  • Created new UI components to be used in the flagship product.
  • Designed and implemented a new translation module in the back end.
  • Communicated with clients remotely and on-site.
Technologies: SQL, Oracle PL/SQL, Swing, Java
2006 - 2011

Software Developer

Medius d.o.o.
  • Developed back-end application features with EJB, JBoss, and Hibernate.
  • Developed UI features with Eclipse SWT and RCP.
  • Did ad-hoc database queries and programming.
  • Built an automatic reporting solution with Eclipse BIRT.
  • Developed web application features with JSF and SEAM.
  • Maintained production applications.
Technologies: Hibernate, Linux, Seam, Oracle, Enterprise Java Beans (EJB), Eclipse RCP, Java
2005 - 2006

Junior Software Developer

Microgramm d.o.o.
  • Developed web application features.
  • Developed features for web programming interfaces.
  • Administrated PostgreSQL database and ad-hoc queries.
  • Wrote documentation.
  • Wrote automated tests and did manual testing.
Technologies: JavaScript, CSS, HTML, Perl
2003 - 2005

Junior SQL Developer

Simobil d.o.o.
  • Rewrote the automatic reporting system.
  • Wrote Ad-hoc SQL queries for data used in other departments.
  • Took care of data warehouse administration over the weekends.
  • Implemented features on data marts.
  • Optimized SQL queries for automatic periodic reporting.
Technologies: PL/SQL, Oracle SQL, Unix

Experience

Fieldoo.com

http://www.fieldoo.com/
Worked as a full-stack engineer. The tech stack included Java, Spring, MVC, jQuery, Memcached, MySQL, and MongoDB. I did a large part the of back-end code including optimizing database queries, writing internet scrapers/parsers, and doing OAuth2 with different providers.

FlyZUUM.com

Worked as a CTO and full-stack engineer for a private jet booking company. The tech stack included Java, Spring, Grails, Angular, MySQL, and AWS.
Image of Why Should Java Developers Give Grails a Chance? publication
Publication

Why Should Java Developers Give Grails a Chance?

https://www.toptal.com/grails/should-java-developers-give-grails-chance

Skills

Languages

Java, JavaScript, Perl, HTML, CSS, Python, SQL, Python 3

Frameworks

Hibernate, Spring MVC, Grails, Angular, Spring, Swing, Seam, Gorm, AngularJS

Libraries/APIs

jQuery, React, Node.js, Scikit-learn, Keras

Tools

Eclipse IDE, IntelliJ IDEA, Subversion (SVN), Jira, Eclipse RCP, Git

Platforms

Oracle, Windows, Linux, Unix, Amazon EC2, AWS Elastic Beanstalk, Visual Studio Code (VS Code)

Storage

Oracle PL/SQL, Oracle SQL, PL/SQL, MySQL, MongoDB

Other

Team Leadership, Remote Team Leadership, Machine Learning, Enterprise Java Beans (EJB)

Paradigms

Agile Software Development, Extreme Programming

Education

2008 - 2017

Master's Degree in Computer Science

FAMNIT, Univerza na Primorskem - Koper, Slovenia

2003 - 2007

Bachelor of Science Degree in Computer and Information Science

FRI, Univerza v Ljubljani - Ljubljana, Slovenia

Certifications

MARCH 2010 - PRESENT

Oracle Database 11g Administrator Certified Associate

Oracle Corporation

FEBRUARY 2010 - PRESENT

Oracle Database SQL Expert

Oracle Corporation

AUGUST 2009 - PRESENT

Sun Certified Java Programmer 6.0

Sun Microsystems