Univerza v Mariboru

Secondary school of economics Celje

III. Primary school Celje

Senior iOS developer and Wallet mobile tech lead

iOS lead on the corporate mobility project for Switzerland

iOS team lead on the advanced private security app for Germany

Netcetera

iOS mobile architect

At the end of 2015 I have figured out that I have gained more than enough experience via my permanent position(s), visiting conferences, completing on-line courses to work at my permanent position and become a freelancer. By combining this two worlds I can feed my passion to challenge myself in new technologies, gain even more experience in various projects, know more people, provide better service to my great employers Klika and Sportradar and of course make some extra income to make my family life easier.

As a freelancer I am focused on developing native mobile applications for iOS, but I also can work on projects requiring full stack developer with Java background. There is also one speciality which comes as inheritance from my family: my father and grandfather were teachers. I love to lead courses related to iOS and Java development.

Leon Dobnik s.p.

Freelancer as iOS engineer

Kamino d.o.o.

iOS Lead Engineer

I have joined Kamino in 2019, but I have been working with Kamino since 2018 as a freelancer. I have spent all my time with Kamino as an outsourced member of the GlobalId team, responsible for developing a mobile app. My responsibilities have been:
- senior iOS developer of the GlobalId app
- tech/team lead for the Wallet on the mobile side; both custodial and non-custodial wallet
- doing technical reviews of the PRDs and IPs 
- working on integration between 3 companies: GiD, Uphold, and Apto for issuing and using debit card program inside the GID app
- mentoring developers and consultant to the product in technical aspects related to the app
- direct work with the CTO and CEO of the GlobalId
- implemented a very complex form renderer that displays, validates, and submits forms to the backend (support for hiding, validating, dependencies between elements,...)
- after GiD restructuring I have taken over implementing the hardest features in the GiD project, such as security changes (ed25519 keys), onboarding via WebSockets, and required credentials flow, …

The GlobalId is funded by Greg Kidd.

Mobile software architect, Wallet team tech-lead @ Kamino (for GiD app)

I am lead of small iOS team at Marand responsible for developing iOS application called ACHF - it will be used by the doctors to monitor patients with Advanced Congestive Heart Failure - ACHF. The platform developed for that project is called Pathfinder. Moreover it is planned that entire platform (iOS included) will be also used for other scenarios.

Marand has done a lot of research based projects on iOS platform - integration with medical devices, recognition of pills,... but there was never time to consolidate such project into reusable forms. Therefore my team started at beginning and developed several core modules for iOS:
- core library with dozen helpers used in daily iOS development
- networking library based on Alamofire with pluggable authentication concept + integration with CoreData and JSON serialization
- CoreData helper library (generics wonderland)
- minor utils such as unified landing / login / forgot password library, document previewer

Due complexity of this project I am also working closely with designers and product owner, by helping transforming specifications to the iOS technical requirements (transfer to technical).

Marand d.o.o.

iOS team lead

In October 2016 there has been a free position for Lead iOS developer in the services department of Sportradar d.o.o. (former Klika d.o.o.). I have taken a chance to test myself in new challenges and further improve my iOS knowledge and experience.

Sportradar d.o.o.

Engineering iOS Team Lead

I am member of Klika eBank development team which is hired by Halcom d.d. to participate in develop, maintain and customise eBank web application. My responsibilities are:
- developing eBank web application according to functional specifications as a full stack developer
- planning and designing architecture, solutions required by Halcom d.d.'s customers
- helping in testing and bug fixing eBank web application
- promoting, mocking and enforcing best practices of software development

Although that Klika is Halcom's contractor I am also trusted member of Halcom's technical team responsible for innovations, redesign, changes, development of the Halcom's new generation web application. My responsibilities are:
- identification of bad practices throughout the code and solving them
- promoting best practices in software development
- consultant for further eBank web development, writing technical solutions / proposals for further development
- developing new features for eBank according to technical specification
- working closely Halcom's scrum masters, Java architects and product owners
- working closely with other Halcom's employees as one team

I am daily using following technologies: HTML5, CSS3, Javascript, jQuery, Bootstrap, Spring MVC framework, JDBC Hibernate, Web services, JAXB and many others

Klika d.o.o.

Senior Software Engineer (Java, Spring, Web), iOS engineer

Klika has been bought by the Sportradar A.G. and became part of the Sportradar AG. So I am actually employee of Sportradar AG. The old customers of Klika, such as Halcom d.d., have continued a business partnership with Klika - a new department called Klika services has been formed.

Senior Software Engineer, Java SE / EE (Spring) concentrated, fullstack developer

The months between march 2015 in august 2015 were my probation period (got indefinite time contract after three months) and get familiar with new things and technologies in order to become fully usable member of Klika Halcom's eBank development team. I had to get familiar with:
- architecture of Halcom's eBank application (front-end, back-end)
- new development IDE (IntelliJ)
- rules of development, GIT merging system, eBank maven dependencies
- Spring framework, Apache velocity macros
- SCRUM methodology, JIRA task system
- getting into business contact with Halcom employees (product owners, scrum masters and Java architects)

At the beginning I have started with extremely simple things in bug fixing such as fixing translations, but as the days passed I received harder and harder tasks, like implementing change requests, developing new front end / backend features, planning and evaluating new features / change requests with our team-lead Jernej Medved. 

I have been able to achieve all this in a such short period of time thanks to my patient team members Jernej Medved, Nejc Prinčič, Domen Konda, Halcom's Java architect Matej Mežik, Sportradar's Java expert Matjaž Domen Pečan and head of projects at Klika Rok Štebe. Once again big THANKS to all of you guys.

Senior Java Engineer

I am working in IT industry where being up-to-date is hard work due its very fast development in last decade. I have found a solution to address this "issue"​: I have turned most of my free time into investigating, researching, learning and developing things that I am unable to process at work. I am also directly investing into my knowledge by taking tutorials at Udemy. Let me just present some cases:
- the presentation of a "TimberBidding" project in Java EE on OTS 2014 computer science conference the architecture of presented Java EE stack has been validated. Find details at my publications section
- I am learning swift and iOS development

Free time

Exploring boundaries of Java technologies and iOS development

Java EE Development:
 - implemented internal application for Holiday management with two-step authentication (PrimeFaces, CDI, EJB, JPA, Oracle 10g)
- tehnical leader for the Java EE part of prototype application for online credits in Java EE (PrimeFaces, CDI, JPA and PL/SQL itegration)
- SOAP and REST web services
- evaluation of frameworks: ADF, PrimeFaces

Java SE Development:
- XML signature applet for eBanking application
- PDF signature for eBanking application
- Multithreading services for XML signature and PDF signature creation
- WebServices for eBanking application
- Client for calling web services
- some support libraries for eBanking application (for example: library for extracting data from certificates, library for SchemaValidation, WS for PDF creation via XSLT + Apache FOP)
- developed client side application (B2B) in Java for digitally signing, validating, transfering and retrieving eInvoices, eInvoice subscriptions from bank's customers and vice versa

Oracle database 10g/11g development:
- help maintaining and optimizing current E-banking application (PL/SQL, HTML, CSS, JAVA, jQuery)
- customer support

Other:
- consultant for XML and on XML based technologies
- consultant for J2EE WebService development (WebLogic)
- at the establishment helped in mobile banking development
- ADF development (pure basics)

HRC d.o.o., information engineering

Organizer of Information systems

Teaching assistant:
- web application development (JSF, JSP, HTML)

Software development:
- part of development team which developed platform for sematic web in J2EE (JSF)

University of Maribor, Faculty of Electrical Engineering and Computer Science

Teaching assistant

I have been in a team developing a semantic web application in cooperation with university of Maribor

COT, Center za razvoj sodobnih informacijskih rešitev in storitev, d.o.o

Information System Engineer

Delphi development: 
- maintained applications developed in Delphi,
- GUI redesign
- integration with Java applications

Java development:
- implemented application called "E-executions" ( which allows user to to enter execution and send it to court)
- implemented E-Invoice generator application (creates eSlog XML einvoices and signs them)
- XML signature for eInvoices

Worked with databases:
- MySql, 
- Oracle 10g

Other:
- user manuals writer
- customer support
- software presentations