Jovan S. - Senior Java Software Engineer

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Banja Luka, Bosnia and Herzegovina

Experience

Feb 2023 - Jul 2025

2 years 6 months

Abacus360 Banking Developer

Regnology

Developed, optimized, and maintained Java/SpringBoot microservices for data access and modification
Implemented synchronizations between a pseudo-cache and ClickHouse database
Orchestrated Spark processes and Oracle storage
Implemented functionally specific features as part of the Data Access and Acceleration Layer on the Abacus platform
Improved code quality and performance with gains up to 90%

Jan 2023 - Present

3 years

Founder / Senior Software Engineer

dnr sole proprietorship

Responsible for the development, optimization, and maintenance of backend systems/services
Conducted code reviews and provided technical support for team members

Apr 2022 - Sep 2022

6 months

Product Owner, Mentor

Croz & Ongulus

Organized summer internship and mentored four students
Planned and promoted the internship and internal Absence Planner application project
Acted as tech lead, Scrum Master, and Product Owner during the project

Jan 2022 - Jan 2023

1 year 1 month

Developer for AGCO Fuse

AGCO Corporation

Developed Java/SpringBoot microservices for communication with Fendt tractor terminals and Agrirouter
Implemented machine onboarding, file storage, and conversion between geo-specific file formats (Shapefile, KML, GeoJSON)
Used Java, SpringBoot, MySQL, ActiveMQ, Robot Framework, Docker, Kubernetes, AWS Cloud, GitLab CI, Helm, JUnit, Flyway

Dec 2021 - Jan 2022

2 months

Developer for SME Lending Services

Raiffeisen Bank

Developed a service for the SME lending process
Implemented complex integration with the Bisnode external system
Used Java, Spring, Hibernate, MS SQL, REST, SOAP, Git, Maven, Liquibase

Feb 2021 - Nov 2021

10 months

Developer for Digital Onboarding

OTP Bank

Developed an end-to-end solution for online bank account opening
Implemented customer data collection, core banking system integration, and Asseco Live 2.0 video ID system
Used Java, Spring, Hibernate, MS SQL, REST, Git, Maven

Jan 2019 - Jan 2023

4 years 1 month

Senior Software Engineer / Team Leader

Ongulus Software Development

Worked on projects in various industries, including finance/banking, agriculture, and conglomerates
Developed and maintained backend systems/services
Conducted code reviews and provided team leadership, mentoring, and technical support
Provided DevOps support and reported to upper management
Conducted technical interviews and evaluated job applicants

Dec 2018 - Jan 2021

2 years 2 months

ERP Software Developer

Mach AG

Developed and maintained an ERP software solution for finance, human resources, ECM, and business intelligence
Used Java, Spring, Hibernate, Oracle, Firebird, MSSQL, Git, Gradle, Maven, JUnit, Camunda BPM

Aug 2016 - Dec 2018

2 years 5 months

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

Aug 2016 - Nov 2018

2 years 4 months

Developer for Early Career Projects

Various Clients

Developed and maintained backend systems for automotive, insurance, oil, and government applications
Integrated SOAP/REST APIs
Contributed to document management, tax administration, and warehouse systems to improve operational workflows
Worked with Java, Groovy, Grails, Hibernate, Ext JS, Maven, Gradle, Jasper, Git, Activiti BPM, Liquibase

Aug 2015 - Aug 2015

1 month

Software Engineer Intern

Lanaco Company

Worked with Java, SpringBoot, ClickHouse, Oracle, Calcite, GraphQL, Docker, Kubernetes, Google Cloud Platform, Bitbucket, Jenkins, Helm, JUnit, Maven, RabbitMQ

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.