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Hi, I’m Rustem Ospanov, a Java software engineer focusing on backend services for banking systems. I build scalable, reliable back-ends with Java, Spring Boot, Kafka, and cloud deployments, turning complex requirements into robust technical solutions. I have practical experience with performance optimization, production support, and remote collaboration across time zones. I’m passionate about clean architectures, thorough testing, and continuous learning to help teams ship value faster.…Hi, I’m Rustem Ospanov, a Java software engineer focusing on backend services for banking systems. I build scalable, reliable back-ends with Java, Spring Boot, Kafka, and cloud deployments, turning complex requirements into robust technical solutions. I have practical experience with performance optimization, production support, and remote collaboration across time zones. I’m passionate about clean architectures, thorough testing, and continuous learning to help teams ship value faster.

Rustem Ospanov

Back-End Developer, Developer, Full Stack Developer, +2

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Hi, I’m Rustem Ospanov, a Java software engineer focusing on backend services for banking systems. I build scalable, reliable back-ends with Java, Spring Boot, Kafka, and cloud deployments, turning complex requirements into robust technical solutions. I have practical experience with performance optimization, production support, and remote collaboration across time zones. I’m passionate about clean architectures, thorough testing, and continuous learning to help teams ship value faster.…Hi, I’m Rustem Ospanov, a Java software engineer focusing on backend services for banking systems. I build scalable, reliable back-ends with Java, Spring Boot, Kafka, and cloud deployments, turning complex requirements into robust technical solutions. I have practical experience with performance optimization, production support, and remote collaboration across time zones. I’m passionate about clean architectures, thorough testing, and continuous learning to help teams ship value faster.

Available to hire

Hi, I’m Rustem Ospanov, a Java software engineer focusing on backend services for banking systems. I build scalable, reliable back-ends with Java, Spring Boot, Kafka, and cloud deployments, turning complex requirements into robust technical solutions.
I have practical experience with performance optimization, production support, and remote collaboration across time zones. I’m passionate about clean architectures, thorough testing, and continuous learning to help teams ship value faster.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Russian

Fluent

English

Advanced

Work Experience

Java Software Engineer at Halyk Bank

January 1, 2024 - Present

Developed backend services using Java and Spring for banking systems. Integrated ML model outputs into risk management services. Supported asynchronous processing and production deployments. Investigated and resolved production issues.

Junior Software Engineer at Kaspi Bank

January 1, 2023 - December 31, 2024

Developed Java backend services using Spring Boot, Hibernate, PostgreSQL; implemented parcel terminal integration and order workflows; optimized task pool and background processing; worked with Kafka-based event-driven workflows; reduced processing time by ~50% via service and DB optimization; supported production systems (monitoring, incidents, on-call).

Support Engineer at Open Service

January 1, 2022 - December 31, 2023

Wrote and modified scripts in Java, Python and C#; troubleshooting and resolving issues related to iiko software; writing technical documentation and system diagrams.