Open to opportunities

Croissant User

@croissantuser

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Skilled Java Developer with 7+ years of backend and big data experience.

Serbia

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What I'm looking for

I am looking for a role that values innovation, collaboration, and continuous learning, where I can contribute to impactful projects.

I am a Java Engineer with over 7 years of experience in backend development and big data solutions. My passion lies in writing clean, efficient code and tackling complex technical challenges in distributed systems. I thrive in collaborative environments, where I can contribute to team growth through code reviews, technical discussions, and mentoring.

Throughout my career, I have designed and implemented critical services that enhance system performance and scalability. My expertise includes developing data processing pipelines using technologies like ClickHouse and MongoDB, as well as deploying services with modern tools such as Nomad and Docker. I take pride in my ability to improve system observability and fault tolerance, ensuring that applications run smoothly and efficiently.

In addition to my technical skills, I have a strong foundation in DevOps principles, having worked closely with CI/CD processes and infrastructure management. I am always eager to learn and share knowledge with my peers, fostering a culture of continuous improvement and innovation.

Experience

Work history, roles, and key accomplishments

Software Engineer

IQFluence

May 2024 - Apr 2025 (11 months)

Designed a core service that served as a critical foundation for multiple components. Developed and maintained data processing pipelines, leveraging ClickHouse and MongoDB for efficient storage, querying, and analytics. Implemented proxying techniques.

Java Python Clickhouse MongoDB Nomad Datadog Microservices REST APIs

Kotlin/Python Developer

OKKO

Jan 2022 - May 2024 (2 years 4 months)

Maintained backend services in Java using Micronaut and Spring Boot. Led the redesign of authentication and authorization systems, effectively mitigating cybersecurity vulnerabilities. Orchestrated the migration of key components to a standalone project, enabling seamless integration and enhancing overall system architecture.

Java Spring Boot Kotlin Python Microservices REST APIs Scrum Agile

Developer

Epam and Innotech

Jan 2020 - Dec 2022 (2 years 11 months)

Developed the backend for kdelu.vtb.ru web-portal from scratch to production. Established the backend foundation for the project, including OAuth2 authentication and GeoLocation Detection by IP. Integrated SMTP Services for email newsletters and added Grafana for project metrics.

Java OAUTH2 SMTP Grafana Kubernetes Docker TeamCity Microservices REST APIs

Developer

Thumbtack/Lineate

Jan 2018 - Dec 2020 (2 years 11 months)

Supported a high-load SSP, optimizing request processing and monitoring. Developed a filtering service to store and track real-time request data. Transitioned into Python development, improving test coverage and debugging applications.