Uladzislau Osipau
@uladzislauosipau
Senior Java Software Engineer with expertise in fintech solutions.
What I'm looking for
As a Senior Java Software Engineer, I have a proven track record of delivering high-quality software solutions in the fintech and healthcare sectors. My experience includes developing a unified SDK for Visa that simplifies mobile app integration for banks and fintechs, enhancing the digital experience for cardholders. I take pride in my ability to lead projects from conception to deployment, ensuring robust functionality through comprehensive testing and documentation.
Throughout my career, I have worked with various technologies, including Java, Spring Framework, and cloud services like AWS. I have successfully integrated complex systems and improved performance through thoughtful refactoring and design patterns. My collaborative approach has allowed me to work effectively with cross-functional teams across different countries, contributing to agile project goals and mentoring new developers to foster a strong team environment.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
VISA
Jan 2024 - May 2025 (1 year 4 months)
Developed a unified SDK for Visa, simplifying mobile app integration for banks and fintechs, enabling rapid deployment of secure digital features like push provisioning to major wallets. Led migration of a major service from Java 8 to Java 17, including updating Spring dependencies, and developed and maintained E2E and RestAssured tests to ensure robust functionality.
Senior Software Engineer
Credentially
Apr 2022 - Dec 2023 (1 year 8 months)
Designed, implemented, and documented features for healthcare credentialing software, integrating with third-party systems. Investigated and resolved performance issues, and implemented a DB Anonymization tool for production dumps according to GDPR from scratch.
Software Engineer
Circuit Engineering Technologies
Dec 2020 - Mar 2022 (1 year 3 months)
Developed a delivery confirmation protocol for websockets and refactored project structure by extracting common functionality to libraries with clear APIs. Implemented a new fault-tolerant service on Kotlin from scratch and designed and implemented async messaging using websockets and RabbitMQ.
Java Software Engineer
EPAM
Jul 2019 - Dec 2020 (1 year 5 months)
Wrote testable, efficient code for a B2B solution managing employee work time, extending and implementing new endpoints. Participated in daily scrum meetings, documented work, and provided technical advice on bugs and enhancements.
Java Software Engineer
EPAM
Aug 2017 - Jul 2019 (1 year 11 months)
Wrote testable, efficient code for an e-commerce solution for a luxury fashion brand, participating in daily scrum meetings and documenting all work. Provided technical advice on bugs and enhancements and assisted the Support team when necessary.
Java Trainee
EPAM
Nov 2016 - Jul 2017 (8 months)
Developed a simplified Booking.com clone as a lab project, focusing on Monolith architecture, REST, Spring MVC, and JDBC. Also worked on a web application for a telecom company using Servlets, JSP, and JDBC with a custom connection pool.
Education
Degrees, certifications, and relevant coursework
Belarusian State University of Informatics and Radioelectronics
Bachelor, Informatics and Radioelectronics
Completed a comprehensive curriculum focusing on various aspects of informatics and radioelectronics. Gained foundational knowledge and practical skills in relevant technical disciplines.
Availability
Location
Authorized to work in
Skills
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