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Aliaksandr Ramanouski

@aliaksandrramanouski

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Senior/Lead Java developer specializing in high-load distributed systems.

Poland

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What I'm looking for

I seek roles focused on building scalable distributed systems, mentoring teams, and improving performance in a collaborative, English-speaking environment with opportunities for technical leadership.

I am a senior/lead Java developer with 8+ years building high-load distributed systems, specializing in microservices, streaming, and database optimization. I focus on performance, scalability, and clean, maintainable architecture.

At Draivn Inc. I designed and developed high-throughput services for vehicle trip data, integrating telematics, weather and traffic data, and leveraging Kafka, Flink, Quarkus, MongoDB and PostgreSQL/PostGIS to deliver real-time processing at scale.

Previously I delivered full-stack and backend solutions for airline management and fintech lending platforms, implementing complex integrations (SOAP/REST/gRPC/Avro), authentication (JWT/Keycloak), and observability with Grafana while mentoring teams and driving code quality.

I bring strong hands-on experience with JVM languages (Java, Kotlin), distributed messaging and stream processing, database tuning, and CI/CD practices, and I thrive in cross-functional English-speaking teams focused on continuous improvement and technical excellence.

Experience

Work history, roles, and key accomplishments

Current

Senior/Lead Java Developer

Current

Draivn Inc.

Oct 2023 - Present (1 year 11 months)

Designed and developed high-load microservices to process and analyze vehicle trip data for insurance clients, leveraging Kafka and Flink to enable real-time processing and scalable throughput. Optimized database queries and re-architected components to improve performance and scalability in a distributed event-driven system.

Java Quarkus Apache Kafka Apache Flink PostgreSQL MongoDB Microservices gRPC Avro

Senior Java/Kotlin Developer

Farel Inc.

Mar 2023 - Feb 2024 (11 months)

Implemented core business logic and integrations for a comprehensive airline management platform, improving reliability via tests and Grafana-based monitoring with alerting. Conducted code reviews and contributed to architecture and DevOps integrations.

Java Kotlin Spring Boot PostgreSQL Grafana AWS Docker REST Swagger

Senior Full Stack Developer

HES FinTech

Jul 2019 - Mar 2023 (3 years 8 months)

Led backend development and deputy team lead duties for online/offline lending platforms, designing Spring Boot services, SOAP/REST integrations, and security (Keycloak) to ensure scalable transaction processing. Mentored juniors and improved observability via Grafana.

Java Spring Boot Spring Security PostgreSQL Keycloak Grafana

Software Engineer

IntexSoft

Aug 2017 - Jul 2019 (1 year 11 months)

Developed and maintained billing microservices for telecom clients, implementing messaging workflows and automating deployments to improve availability and performance. Contributed to CI/CD and testing practices to raise system reliability.