CTO
2013 - 2015Finanex, Cyprus- Developed a stand-alone Java application that pushed data to different clients (HTML, Flash, iOS, Android).
- Developed a web application in Wicket and integrated it with a front-end output.
- Connected to payment gateways and executed real time money payments.
- Connected to various third party APIs (MailChimp, GetResponse, Facebook, Lightstreamer, etc.).
- Connected to market data providers with real time streaming quotes (IQFeed and Morningstar).
- Investigated possible technologies for a project and made a selection based on a cost vs. functionality trade-off criteria.
- Interviewed new candidates to join the team (for Java back-end and HTML + CSS front-end positions).
- Prioritized and making strategic decisions based on available resources and business requirements.
- Met with investors and affiliates, presenting technical details of a project.
- Fully administered deployments on Amazon AWS (EC2, RDS) from the initial account creation to the working state of the servers.
- Obtained and installed SSL/TLS certificates.
- Managed DNS accounts.
Technologies: Lightstreamer, Apache Wicket, WebSockets, PostgreSQL, JBoss, EclipseLink, Spring, JAX-RS, JavaJava Back-end and Web Developer
2010 - 2013Freelance- Developed various web applications.
- Modeled and administered MySQL and PostgreSQL databases.
- Developed a rich web UI using Sencha Ext JS.
- Created REST services and clients.
Technologies: PostgreSQL, MySQL, JBoss, Apache Tomcat, Hibernate, EJB3, Spring, Apache Struts, Ext JS, JAX-RS, JavaJava Web Developer
2007 - 2010European Dynamics - Athens- Developed business web applications for government e-procurement systems.
- Worked on database modeling (MySQL).
- Administered several deployments on client machines (Linux & Windows).
- Analyzed client requirements.
- Wrote precise use cases based on client requests.
- Led a team of developers.
Technologies: Orbeon Forms, EJB 3, MySQL, JBoss, Apache Tomcat, Spring, JavaScript, jQuery, JSP, JavaJava Web Developer
2006 - 2007Komercijalna Banka AD, Belgrade- Developed enterprise web applications and web services.
- Administered IBM WebSphere application server through the administrative console and additional scripting.
- Developed stand-alone Java applications that run on legacy IBM mainframes.
- Accessed and incorporated legacy CICS transactions from Java.
- Administered IBM DB2 and Microsoft SQL Server databases.
Technologies: JUnit, WebSphere MQ, ActiveMQ, WebSphere, Hibernate, Spring, Apache Struts, Servlets, JSP, JavaBack and Front-end Developer
2005 - 2006BIS Beograd, Belgrade- Developed applications for financial bookkeeping and accounting.
- Worked on database modeling.
- Administered client installations on Windows and Linux machines.
- Remotely assisted clients with technical issues.
Technologies: UI
Software Developer in Fortaleza - State of Ceará, Brazil
Member since October 8, 2015
Dejan has many years of experience working with top Java and JavaScript frameworks. He is proficient in Spring/JEE, HTML, CSS, and several popular JavaScript libraries, not to mention a complimentary fluency in the DB layer. Dejan is a powerful addition to any team due to his competency with version control systems (SVN/Git) and internal development tools (Ant/Maven), as well as his results-driven and flexible mindset.
Dejan is now available for hire
Portfolio
- Finanex, CyprusLightstreamer, Apache Wicket, WebSockets, PostgreSQL, JBoss, EclipseLink...
- FreelancePostgreSQL, MySQL, JBoss, Apache Tomcat, Hibernate, EJB3, Spring...
- European Dynamics - AthensOrbeon Forms, EJB 3, MySQL, JBoss, Apache Tomcat, Spring, JavaScript, jQuery...
Experience
- SQL 9 years
- JavaScript 9 years
- Java 9 years
- Hibernate 8 years
- Spring 8 years
- Spring Security 6 years
- Git 3 years
Availability
Part-time
Preferred Environment
Git, Eclipse
The most amazing...
...project I've worked on was a new financial instrument, a derivative of binary options, with integrated payment gateways and real-time money payments.
Employment
Experience
- Belgian Public Procurement e-platform (Development)https://enot.publicprocurement.be/
System for electronic public procurement for Belgian public institutions. Contains all steps in a procurement process including listing the projects, searching and narrowing down suppliers, and organizing the reverse e-auctions.
- New Trading Platform (Development)
A platform that offers a different approach to online trading. Individual traders face each other directly, instead of facing professional counterparts such as dealers and institutional investors whose capital, skills, information, and tools far exceed those of the individual investors.
- REST Security with JWT using Java and Spring Security (Publication)Although the old, standardized security approaches work with REST services, they all have problems that could be avoided by using a better standard. For this, JWT arrives just in time to save the day. In this article, Toptal engineer Dejan Milosevic guides us on how to implement a JWT token-based REST API using Java and Spring Security.
Skills
Languages
Java, HTML, SQL, Hibernate Query Language (HQL), JavaScript, HTML5, CSS3, CSS, C++Frameworks
JPA, JUnit, iBATIS, Hibernate, Spring Security, Spring MVC, Spring, Apache Struts, Apache Struts 2, JavaServer Pages (JSP), Jersey, Ext JS, JSP, Apache WicketLibraries/APIs
MyBatis, jQuery, DBUnit, RESTEasy, JAX-RS, jQuery UITools
Git, IntelliJ IDEA, Eclipse IDE, Apache Ant, Apache Tomcat, Subversion (SVN), Maven, ActiveMQ, ApacheParadigms
RESTPlatforms
JEE, Amazon Web Services (AWS), Eclipse, WebSphere MQ, JBoss, Windows, Linux, WebSphereOther
EclipseLink, Servlets, EJB 3, CDI, EJB3, WebSockets, Lightstreamer, Orbeon Forms, UIStorage
JBoss AS, MySQL, PostgreSQL, Microsoft SQL Server, IBM Db2
Education
- Bachelor of Science degree in Electrical Engineering2000 - 2006Faculty of Electrical Engineering, University of Belgrade - Belgrade, Serbia
