You will get Troubleshooting & root cause analysis
Project details
Are you stuck with a Java error, exception, or unexpected behavior? Don’t worry — I’ll find and fix it for you! 🚀
What I offer:
✅ Debugging & fixing runtime errors, crashes, or exceptions
✅ Root cause analysis with clear explanations
✅ Quick fixes for broken builds (Maven/Gradle)
✅ Log analysis & error resolution
What I offer:
✅ Debugging & fixing runtime errors, crashes, or exceptions
✅ Root cause analysis with clear explanations
✅ Quick fixes for broken builds (Maven/Gradle)
✅ Log analysis & error resolution
Programming Languages
JavaWhat's included $45
These options are included with the project scope.
$45
- Delivery Time 1 day
- Number of Revisions 1
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LK
Lidia K.
Aug 15, 2025
Java Backend Developer – Spring Boot
I highly recommend Oleh and hope to work with him again for my upcoming tasks.
He's technically skilled, reliable, and communicates clearly throughout the project. Kudos to him for excellent help.
He's technically skilled, reliable, and communicates clearly throughout the project. Kudos to him for excellent help.
LK
Lidia K.
May 26, 2025
The Spring Boot Java developer is needed
Highly recommend working with Oleh. Technical expertise, proactive communication, and high-quality delivery made a significant impact on the project's success
About Oleh
Expert Java developer | Solution architect | Java | Spring Boot
Krakow, Poland - 12:24 pm local time
⭐ Played a key role in a tech stack migration that resulted in annual savings of up to $450,000 for the client.
⭐ Delivered the client's flagship product ahead of schedule, resulting in faster time-to-market and a competitive advantage.
⭐ Improved performance by analyzing query plans and optimizing slow queries.
Over 15 years of experience in software development, with 5+ years specializing as a Solution Architect.
Expertise in Java and the Spring Framework as the primary technology stack, with extensive hands-on experience and a deep passion for Java development.
✅ Skilled in developing technical roadmaps, making critical technical decisions, system design, project estimation, and effective stakeholder communication.
✅ Languages:
Java 8-21, JavaScript, TypeScript, Python.
✅ Spring Ecosystem:
Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Spring Cloud (Config, Gateway, Eureka), Spring WebFlux.
✅ ORM:
Hibernate, EclipseLink, MyBatis.
✅ Message Brokers:
RabbitMQ, Google Cloud Pub/Sub, Apache Kafka, IBM MQ, ActiveMQ.
✅ Databases:
Oracle, Microsoft SQL Server, PostgreSQL, MySQL, MongoDB, Firebase, Cassandra, Aerospike, Redis, ElasticSearch.
✅ Strong background in Fintech, Social Networks, Logistics & Transportation, and Tourism & Hospitality industries.
Steps for completing your project
After purchasing the project, send requirements so Oleh can start the project.
Delivery time starts when Oleh receives requirements from you.
Oleh works on your project following the steps below.
Revisions may occur after the delivery date.
I’ll analyze your Java project and provide a professional root cause report