Janko Stijepović - Solution Architect

Q: Where is Janko based?

Janko is based in Belgrade, Serbia and can operate in on-site , hybrid , and remote work models.

Q: What languages does Janko speak?

Janko speaks the following languages: Serbian (Native), English (Advanced), Russian (Intermediate) .

Q: How many years of experience does Janko have?

Janko has at least 34 years of experience. During this time, Janko has worked in at least 15 different roles and for 13 different companies . The average length of individual experience is 2 years and 1 month . Note that Janko may not have shared all experience and actually has more experience.

Q: What is Janko's latest experience?

Janko's most recent position is Solution Architect at Yettel Bank .

Q: What companies has Janko worked for in recent years?

In recent years, Janko has worked for Yettel Bank , JMV Solutions , Luxoft , Engineering Ingegneria Informatica Spa , and Profit Concepts International .

Q: Which industries is Janko most experienced in?

Janko is most experienced in industries like Information Technology (IT) , Government and Public Administration , and Aerospace and Defense . Janko also has some experience in Banking and Finance , Retail , and Utility Services .

Q: Which business areas is Janko most experienced in?

Janko is most experienced in business areas like Information Technology (IT) , Product Development , and Human Resources (HR) . Janko also has some experience in Quality Assurance (QA) , Accounting , and Finance .

Q: Which industries has Janko worked in recently?

Janko has recently worked in industries like Information Technology (IT) and Banking and Finance .

Q: Which business areas has Janko worked in recently?

Janko has recently worked in business areas like Information Technology (IT) and Product Development .

Recommended expert

Belgrade, Serbia

Experience

Feb 2024 - Present

2 years 1 month

Solution Architect

Yettel Bank

Developed detailed architectures and designs for various initiatives
Created system, context, component, infrastructure logical diagrams for bank applications
Demonstrated proficiency with Microservices, APIs, platform infrastructure
Presented application systems and technology infrastructure to Team Leaders, Project Managers and Directors
Monitoring of Microservices and infrastructure using Dynatrace, Argo CD and Grafana
Collaborated with external vendors and internal business users

May 2023 - Present

2 years 10 months

Senior Java Software Engineer | Solution Architect

JMV Solutions

Designed architecture and database for a career platform based on functional and non-functional requirements analysis
Designed RESTful APIs with proven patterns to enhance platform functionality and user experience
Documented API functionalities for seamless integration and future scalability
Tech: UML, Java 11, Spring, Spring Boot, PostgreSQL, JIRA, Confluence

Oct 2022 - May 2023

8 months

Senior Java Software Engineer

Luxoft

Modernized and migrated Healthcare application to the Azure platform for a US client
Designed integration architecture and replaced old Oracle ADF modules with new Java and Spring ones
Shared knowledge with team members about application development with Oracle Application Development Framework (ADF) and best practices
Tech: Java 11, RESTful Services, UML, Oracle ADF, Oracle JDeveloper, IntelliJ IDEA

May 2021 - Oct 2022

1 year 6 months

Senior Solution Developer | Team Lead

Engineering Ingegneria Informatica Spa

Refactored monolithic application into microservices by extracting services from it
Developed a new system design and functionalities of banking application for one of the largest banks in Europe
Solution based on WebSphere Application Server (WAS) using Java, Microservices and Struts framework along with JSP, jQuery and JavaScript
Used Agile process flow in JIRA to move tasks from one activity to another
Environment: Java 8, Spring Boot, Spring JDBC, PostgreSQL, Struts, WebSphere AS, SOAP/REST, AWS, JSF, JSP, IntelliJ, Eclipse, SQL Developer, Git, Maven, JIRA

Jul 2018 - May 2021

2 years 11 months

Full-Stack Java Software Engineer | Team Lead

Profit Concepts International

Developed, maintained and optimized modules of a large SaaS Asset Management Solution based on Oracle Database, JEE for a US client
As member of architecture team designed and organized new system modules
Debugged complex software issues in a high-pressure environment, leading to a 20% increase in system efficiency and reliability
Analyzed requirements and assigned tasks to team members
Led a team of 4 people using Agile – Scrum methodology
Technology & Tools: Java 8, Spring, Spring Boot, Tomcat, Oracle DB, XML, Hibernate, PostgreSQL, JavaScript, JSF, JSP, HTML/CSS, Git, JIRA, Confluence

Jan 2018 - Apr 2020

2 years 4 months

Remote

Senior Java Software Engineer – Remote

JMV Solutions

Worked on Jahia CMS platform and NodeJS to develop templates and AMP pages
Used Jahia GraphQL JCR implementation to perform queries
Used Agile – Scrum methodology
Tech stack: Java 8, Hibernate, Oracle DB, AWS, JavaScript, JSF, JSP, SOAP/REST, NodeJS, HTML/CSS, jQuery, XSD, XSLT, XML, Docker, Maven, Eclipse, Git

Nov 2016 - Sep 2017

11 months

Senior Java Developer with Apache Camel

Forex Club

Developed middle-tier integration layer of a large trading application using REST Web Services, Spring, Spring Boot, Java, JMS
Designed architecture of messaging platform using Apache tools: Camel as integration framework, ServiceMix as integration container, ActiveMQ as message broker and Drools as BRMS
Used Agile – Scrum methodology for service development
Development environment: Eclipse, Git, Gradle, Jira, Confluence

Nov 2015 - Oct 2016

1 year

Senior Java Software Engineer

Profit Concepts International

Performed business analysis, user stories, and development of presentation layer and back-end services of retail management system for US client
Full-stack development using Java, Spring MVC, OAuth 2 security, and Servlets
Developed Spring RESTful web services producing JSON and XML documents
Handled B2B integration using EDI ANSI X12 and translated PDF data to and from Order Entry Systems using J2EE technology
Performed in-depth data analysis and prepared periodic reports using MS SQL Server, T_SQL and MS Excel

Mar 2014 - Nov 2015

1 year 9 months

webMethods Developer & ARIS-BPM Consultant

M&I Systems

Developed Web Services and webMethods Flow services on webMethods platform
Designed business processes with webMethods Designer
Connected applications and data via JMS, Integration Server Universal Messaging, webService interface, JDBC, XML, JSON and adapters
Project: Procure to Pay / Purchase to Pay process in Public Enterprise Electric Power Industry of Serbia (EPS)
Developed business architecture in EPS and subsidiaries using ARIS methodology and ARIS Business Architect

May 2012 - Feb 2014

1 year 10 months

Belgrade, Serbia

IT Solutions Consultant | Senior Software Engineer

ComTrade Group

Project: Technical assistance to strengthen the institutional capacity of the Serbian Tax Administration for efficient financial and material accounting management (EU-funded IPA project)
Developed business architecture, BPM and proposed solutions for system integration issues
Reported to EU-based C-level consultants and participated in strategic planning
Project: Improvement of transparency and efficiency in public prosecution and penal system of the Republic of Serbia
Developed a web-based application in the justice area using Java, RichFaces, JSF, JSP, CSS and Tomcat
Used EMC Documentum ECM for document storage and retrieval

Dec 2008 - Apr 2012

3 years 5 months

Belgrade, Serbia

IT Quality Manager & QA Team Lead

Comtrade Group

Worked with cross-functional teams including SD, Sales, Marketing and Legal
Trained and mentored employees, achieving ISO 9001:2008/TickIT certification
Managed internal audits in line with ISO 9001
Led a QA team of 6 people, tracking issues to ensure quality and on-time delivery

Nov 2007 - Nov 2008

1 year 1 month

Belgrade, Serbia

Java Software Engineer

Comtrade Group

Project: Central IS real estate business application for US client
Performed business analysis and developed retail management system
Developed web application with Apache Jackrabbit, JSP and RichFaces
Technologies: Java, Hibernate, MySQL, JBoss AS, RichFaces

Apr 2007 - Oct 2007

7 months

Java – Oracle ADF Developer

Fadata

Designed SOA of Insurance IS (INSIS) used in large insurance companies
Built back-end application parts and web services using Oracle ADF BC, XML, XPath, XSD, Java and in-house framework
Participated in database design and administration

Oct 2005 - Mar 2007

1 year 6 months

Java – Oracle PL/SQL Developer

IGEA d.o.o.

Project: Web-based application for metadata evidence from GIS of Maribor municipality
Responsible for database design, writing test scripts and developing web pages using HTML, JSP, CSS and Struts
Developed PL/SQL procedures and triggers per business requirements
Wrote modules to access Oracle database with JDBC, SQL and Java classes
Project: Calculation of taxes for agricultural land for Serbian Tax Administration
Developed Oracle ADF Business Components and PL/SQL blocks for tax calculation
Used Java, JDBC, JDeveloper IDE and Toad tools

Jan 2001 - Dec 2005

5 years

Belgrade, Serbia

ERP Consultant – Oracle Application Developer

Digit

Developed and maintained HR management and payroll processing applications
Designed database using entity relationship models
Tech stack: Oracle Forms6i/9i, Reports6i/9i, PL/SQL, SQL, Oracle Database

Jan 1992 - Dec 2000

9 years

Podgorica, Montenegro

Software Developer/Team Leader

IT Department of Ministry of Defense of Yugoslavia

Tech stack: MS Windows NT 3.51/4.0, Novell NetWare, GCOS, COBOL, Clipper, SQL

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (17.5 years), Government and Administration (12 years), Aerospace and Defense (9 years), Banking and Finance (4.5 years), Retail (2 years), and Utilities (1.5 years).

Information Technology

Government and Administration

Aerospace and Defense

Banking and Finance

Retail

Utilities

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (30.5 years), Product Development (12 years), Human Resources (5 years), Quality Assurance (3.5 years), Accounting (2 years), and Finance (2 years).

Information Technology

Product Development

Human Resources

Quality Assurance

Accounting

Finance

Skills

Management: Team Management, Quality Management, Project Management, Jira, Confluence
Architecture And Design: Microservices Architecture, Client-server, Multi-layer, Monolithic Architectures, Strong Oop, Ood, Uml, Structured Systems Analysis And Design (Ssad), Er Modeling, Bpm
Programming & Dev: Java, Design Patterns, Spring, Spring Boot, Oracle Adf Bc, Jdbc, Hibernate, Struts, Drools, Log4j, Json, Xml, Xsd, Xslt, Ant, Maven, Gradle, Pl/sql, Oracle Forms & Reports
Database Design & Database Servers: Oracle 9i/10g/19c, Mssql, Mysql, Postgresql, Db2, Mongodb
Integration: Software Ag Webmethods, Apache Servicemix, Camel, Activemq, Bpmn 2.0, Kafka
Web Development: Javascript, Html, Jquery, Jsp, Jsf, Css, Richfaces, Xhtml, Ajax, Angularjs, Bootstrap, Jboss, Tomcat, Oracle As
Qm & Test: Manual And Automatic Testing, Bug Tracking, Iso 9001:2008/tickit, Quality Assurance
Personal Skills: Analytical, Responsible, Goal-oriented, Excellent Organizational Skills, Presentation, Negotiation And Communication Skills, Strong Interpersonal Skills And Team Leadership Experience.

Languages

Serbian

Native

English

Advanced

Russian

Intermediate

Education

Oct 1987 - Jun 1992

University of Belgrade

Computer Science, 5-year university undergraduate degree · Computer Science · Belgrade, Serbia

Certifications & licenses

Kafka Fundamentals

Luxoft

ESB With Apache Camel & Servicemix, Workshop

Forex Club

Software AG Webmethods - BPM, Process & Task Engine, Rules Engine, UM

M&I Systems

Bpm Using Aris Methodology And Aris Business Architect

M&I Systems

Modeling Business Processes Using Sybase Powerdesigner Tool

MD&Profy

ISO 9001:2008 Internal Auditor Training Course

Oracle Application Development Framework (ADF) And Business Objects

Fadata, Sofia

ISO 9001:2008/TickIT certification

Comtrade Group

Profile

Created

July 2025

Last Update

December 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Janko based?

Janko is based in Belgrade, Serbia and can operate in on-site, hybrid, and remote work models.

What languages does Janko speak?

Janko speaks the following languages: Serbian (Native), English (Advanced), Russian (Intermediate).

How many years of experience does Janko have?

Janko has at least 34 years of experience. During this time, Janko has worked in at least 15 different roles and for 13 different companies. The average length of individual experience is 2 years and 1 month. Note that Janko may not have shared all experience and actually has more experience.

What roles would Janko be best suited for?

Based on recent experience, Janko would be well-suited for roles such as: Solution Architect, Senior Java Software Engineer | Solution Architect, Senior Java Software Engineer.

What is Janko's latest experience?

Janko's most recent position is Solution Architect at Yettel Bank.

What companies has Janko worked for in recent years?

In recent years, Janko has worked for Yettel Bank, JMV Solutions, Luxoft, Engineering Ingegneria Informatica Spa, and Profit Concepts International.

Which industries is Janko most experienced in?

Janko is most experienced in industries like Information Technology (IT), Government and Public Administration, and Aerospace and Defense. Janko also has some experience in Banking and Finance, Retail, and Utility Services.

Which business areas is Janko most experienced in?

Janko is most experienced in business areas like Information Technology (IT), Product Development, and Human Resources (HR). Janko also has some experience in Quality Assurance (QA), Accounting, and Finance.

Which industries has Janko worked in recently?

Janko has recently worked in industries like Information Technology (IT) and Banking and Finance.

Which business areas has Janko worked in recently?

Janko has recently worked in business areas like Information Technology (IT) and Product Development.

What is Janko's education?

Janko holds a Master in Computer Science from University of Belgrade.

Does Janko have any certificates?

Janko has 8 certificates. Among them, these include: Kafka Fundamentals, ESB With Apache Camel & Servicemix, Workshop, Software AG Webmethods - BPM, Process & Task Engine, Rules Engine, and UM.

What is the availability of Janko?

Janko is immediately available full-time for suitable projects.

What is the rate of Janko?

Janko's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.