Jovan S.-Founder / Senior Software Engineer
Check rate
Experience
Founder / Senior Software Engineer
dnr sole proprietorship
- Exclusive partnership with AJA IT-Services GmbH
- Responsible for the development, optimization, and maintenance of backend systems/services
- Conducted code reviews and provided technical support for team members
Student Internship
Croz & Ongulus
- Organized summer internship and mentored 4 students
- Planned and promoted the internship and the internal Absence Planner application
- Assessed candidates
- Acted as tech lead, Scrum Master, and Product Owner during the project
AGCO Corporation
- Developed Java/SpringBoot microservices for communication with Fendt tractor terminals, machine onboarding, communication with Agrirouter, file storage, and file format conversion (Shapefile, KML, geojson)
- Utilized Java, SpringBoot, MySQL, ActiveMQ, Robot Framework, Docker, Kubernetes, AWS Cloud, GitLab CI, Helm, JUnit, and Flyway
Raiffeisen Bank
- Developed a service for the SME lending process
- Implemented a complex integration with the Bisnode external system
- Utilized Java, Spring, Hibernate, MS SQL, REST, SOAP, Git, Maven, and Liquibase
OTP Bank
- Developed an end-to-end solution for online bank account opening including customer data collection, integration with the core banking system, and Asseco Live 2.0 video ID system
- Utilized Java, Spring, Hibernate, MS SQL, REST, Git, and Maven
Senior Software Engineer / Team Leader
Ongulus Software Development
- Worked on projects in various industries such as finance/banking, agriculture, and conglomerates
- Developed and maintained backend systems/services
- Performed code reviews
- Led and mentored team members
- Provided technical and DevOps support
- Reported to upper management
- Conducted technical interviews and applicant evaluations
Mach AG
- Developed and maintained an ERP software solution for administrative management in finance, human resources, ECM, and business intelligence
- Utilized Java, Spring, Hibernate, Oracle/Firebird/MSSQL, Git, Gradle, Maven, JUnit, and Camunda BPM
Junior Software Engineer
Ongulus Software Development
- Worked on projects in the automotive, oil, insurance, and government sectors
- Responsible for backend and frontend development and maintenance
Early Career Projects
Various Clients
- Developed and maintained backend systems for automotive, insurance, oil, and government applications integrating with SOAP/REST APIs
- Contributed to document management, tax administration, and warehouse systems to improve operational workflows
- Clients included Red Bull and Renault
- Utilized Java, Groovy, Grails, Hibernate, Ext JS, Maven, Gradle, Jasper, Git, Activiti BPM, and Liquibase
Software Engineer Intern
Lanaco Company
- Utilized Java, SpringBoot, ClickHouse, Oracle, Calcite, GraphQL, Docker, Kubernetes, Google Cloud Platform, Bitbucket, Jenkins, Helm, JUnit, Maven, and RabbitMQ
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Agriculture, Banking and Finance, Automotive, Energy, and Insurance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Operations, Supply Chain Management, Business Intelligence, and Project Management.
Summary
Seasoned Java Software Engineer with 9 years of experience developing, maintaining, and optimizing robust software solutions across industries, including finance, agriculture, automotive, and government. Skilled in Java, the Spring ecosystem, and the microservices architecture, leveraging modern DevOps tools like Docker, Kubernetes to build scalable, high-performance systems. Demonstrated leadership in guiding development teams, mentoring junior engineers, and driving agile methodologies to ensure timely project delivery. Recently focused on advancing expertise in cloud-native architectures and performance optimization, particularly in regulatory reporting solutions for the financial sector, delivering robust systems that enhance operational efficiency and compliance.
Skills
- Programming: Java, Groovy
- Frameworks: Spring (Boot, Security, Mvc, Webflux, Data, Actuator, Sleuth...), Hibernate, Apache Calcite, Graphql, Grails, Jasper, Axon
- Build Tools: Maven, Gradle
- Databases: Mysql, Postgresql, Oracle, Ms Sql, H2, Ibm Db2 (Relational), Clickhouse (Olap), Liquibase, Flyway (Schema Migration)
- Ide: Intellij Idea
- Devops: Git, Gitlab (Ci), Github (Actions), Bitbucket, Jenkins, Docker, K8s, Helm, Openshift, Aws, Gcp
- Protocols, Messaging: Rest, Soap, Activemq, Rabbitmq
- Front-End: Javascript, Ext Js
- Bpm: Camunda, Activiti
- Project Management: Jira, Confluence, Ibm Rtc, Azure Devops
- Methodologies: Agile, Scrum, Kanban
- Soft Skills And Practices: Clean Code, Team Leadership, Mentoring
Languages
Education
Faculty of Natural Sciences, Mathematics and Computer Science
BSc in Mathematics and Computer Science · Mathematics and Computer Science · Banja Luka, Bosnia and Herzegovina · GPA: 9.18/10.00
Certifications & licenses
Mensa International
Oracle Certified Associate, Java SE 8
nrich | Open source / Croz
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Jovan is based in Banja Luka, Bosnia and Herzegovina and can operate in on-site, hybrid, and remote work models.
Jovan speaks the following languages: Bosnian (Native), Croatian (Native), Serbian (Native), German (Advanced), English (Advanced).
Jovan has at least 10 years of experience. During this time, Jovan has worked in at least 6 different roles and for 9 different companies. The average length of individual experience is 1 year. Note that Jovan may not have shared all experience and actually has more experience.
Based on recent experience, Jovan would be well-suited for roles such as: Founder / Senior Software Engineer, Student Internship, Senior Software Engineer / Team Leader.
Jovan's most recent position is Founder / Senior Software Engineer at dnr sole proprietorship.
In recent years, Jovan has worked for dnr sole proprietorship, Croz & Ongulus, AGCO Corporation, Raiffeisen Bank, and OTP Bank.
Jovan is most experienced in industries like Information Technology, Agriculture, and Banking and Finance. Jovan also has some experience in Automotive, Energy, and Insurance.
Jovan is most experienced in business areas like Information Technology, Product Development, and Operations. Jovan also has some experience in Supply Chain Management, Business Intelligence, and Project Management.
Jovan has recently worked in industries like Information Technology, Agriculture, and Banking and Finance.
Jovan has recently worked in business areas like Information Technology, Product Development, and Project Management.
Jovan holds a Bachelor in Mathematics and Computer Science from Faculty of Natural Sciences, Mathematics and Computer Science.
Jovan has 2 certificates. These include: Mensa International, Oracle Certified Associate and Java SE 8.
The availability of Jovan needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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