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Work Background
ДомкликSenior Java Software Engineer
Dec. 2023Москва, РоссияBackend developer focused on building reliable event-driven systems with Java, Kotlin, and Go. Key responsibilities & achievements:
• Designed and implemented a Go-based process orchestrator to replace a legacy Spring State Machine solution — eliminated state race conditions and improved system stability for high-load workflows.
• Developed reactive microservices using Spring WebFlux with reactive MongoDB driver, integrated with Kafka for async event processing.
• Integrated CryptoPro cryptographic operations into Vert.x services using worker pools (executeBlocking) to avoid blocking the event loop.
• Built lightweight coroutine-based services with Ktor, using Dispatchers.IO for blocking I/O operations.
• Implemented Kafka consumers with SASL/SSL authentication, ensuring idempotent message processing and graceful error handling.
• Worked with PostgreSQL (Kotlin Exposed + Flyway migrations) and Redis for state management and caching.
• Participated in architecture reviews, code reviews, and CI/CD pipelines; deployed services via Docker/Kubernetes with health checks. Technologies: Java, Kotlin, Go, Vert.x, Spring WebFlux, Ktor, Apache Kafka, RabbitMQ, PostgreSQL, MongoDB, Redis, Docker, Kubernetes, Linux.
InsyresSofware java middle developer
Apr. 2023 - Dec. 2023Москва, РоссияBackend developer in a microservices ecosystem focused on physical access control systems (PACS) and hardware integration. Key responsibilities & achievements:
• Developed and maintained Java/Spring Boot microservices providing REST APIs for integration with access control hardware: badge printers, document scanners, card dispensers, and face/document recognition systems.
• Implemented business process orchestration using Camunda BPM: modeled multi-step hardware workflows (e.g., "scan document → recognize face → print badge → dispense card") with error handling and compensation logic.
• Developed cross-platform JNI libraries in C (Linux & Windows) to bridge Java services with vendor-provided native SDKs — enabled reliable hardware communication from JVM applications.
• Built native C wrappers for compiled libraries with exported functions, handling memory management, data marshalling, and platform-specific compatibility.
• Configured Docker containers with Linux device passthrough (/dev devices) to enable hardware access from containerized Java applications — solved device visibility issues in containerized environments.
• Designed idempotent REST endpoints to ensure reliable communication with stateful hardware devices, handling timeouts and retry logic.
• Collaborated with hardware teams to define API contracts and test device integration in staging environments. Technologies: Java, Spring Boot, Spring Cloud, Camunda BPM, C, JNI (Java Native Interface), Docker (device passthrough), Linux, Windows, REST APIs, Microservices, PostgreSQL.
Газпром Трансгаз Ухта Приводинское ЛПУМГSoftware java junior developer
Jun. 2022 - Apr. 2023Приводино
Газпром Трансгаз Ухта Приводинское ЛПУМГИнженер по защите от коррозии подземных магистральных газопроводов
Jan. 2020 - Apr. 2023Приводино
Газпром Трансгаз Ухта Приводинское ЛПУМГМонтер по защите от коррозии подземных магистральных газопроводов
Nov. 2010 - Jan. 2020Приводино
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