EGOR GAVRILOV
Java Developer
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CONTACT
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Email:      egor@sdf.org
Telegram:   @oldzoomer_ru
Setka:      https://set.ki/Dzarbxm
GitHub:     https://github.com/oldzoomer-ru
Personal:   http://oldzoomer.ru

Location:   Kstovo, Nizhny Novgorod region, Russia
Citizenship: Russia
Availability: No relocation, no business trips


ABOUT
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Java developer with focus on DevOps and IoT. I write clean, testable
code, prefer simple solutions, and value architecture quality. Open
to feedback and continuous learning.


KEY PROJECTS
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[1] STINGRAYTV ALICE
    Gateway for integrating TriColor receivers with Yandex Smart 
Home
    GitHub: https://github.com/oldzoomer-ru/stingraytv-alice

    Goal:
    Enable voice control of satellite receivers via Yandex Alice.

    What I did:
    * Implemented Yandex Smart Home integration: device listing,
      state queries, command execution, unlink handling
    * Configured OAuth2 authorization via Keycloak + Spring Security
    * Added mDNS/Bonjour auto-discovery using JmDNS
    * Used WebClient for SSE streams and async receiver 
communication
    * Prepared Docker and docker-compose for deployment
    * Coordinated solution with GS Labs team

    Result:
    Users can switch channels, check program info, and control 
receiver
    power by voice. Device pairing now takes under 30 seconds.

    Stack: Java 25, Spring Boot 4.x, Spring Security, Keycloak,
           JmDNS, WebClient/SSE, Docker, OAuth2, Yandex Smart Home


[2] NODEHISTJ
    Microservice for historical FidoNet data (1984-present)
    GitHub: https://github.com/oldzoomer-ru/nodehistj

    Goal:
    Store, index, and provide access to FidoNet nodelist archives.

    What I did:
    * Designed Spring Boot microservices: historical data service,
      current nodelist service, diff calculation service
    * Integrated Apache Kafka (Redpanda) for inter-service messaging
    * Optimized PostgreSQL access: migrated from JPA to Spring Data
      JDBC with streaming to avoid loading large datasets into 
memory
    * Added Redis caching for faster query responses
    * Integrated S3-compatible storage for archives
    * Used virtual threads (Java 21/25) to reduce memory footprint
      and increase throughput

    Result:
    Historical data indexing reduced from 3 days to 30 minutes on a
    server with 2x10% vCPU and 4 GB RAM.

    Stack: Java 25, Spring Boot 4.x, Spring Data JDBC, 
Kafka/Redpanda,
           PostgreSQL, Redis, S3, Docker, Gradle, Virtual Threads


TECHNICAL STACK
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Languages:
  * Java (Stream API, virtual threads, concurrency basics)
  * SQL (queries, indexing)

Frameworks & Libraries:
  * Spring Boot 4.x (microservices)
  * Spring Security / OAuth2 / Keycloak (auth, JWT)
  * Spring Data JDBC (database access)
  * Kafka / Redpanda (topics, producers/consumers)
  * WebClient (async requests, SSE)
  * JmDNS / mDNS (service discovery)
  * Vaadin (legacy system UI migration)

Databases & Storage:
  * Redis (caching)
  * S3-compatible storage (AWS SDK for objects)

Tools:
  * Docker / Docker Compose (multi-stage builds, distroless)
  * Gradle (dependencies, multi-module projects)
  * JUnit 5 / Mockito / Testcontainers (testing)
  * Git / GitHub Actions / GitHub Pages (CI/CD, hosting)
  * Linux / systemd (administration)
  * FidoNet/FTN protocols (network architecture, nodelists)


WORK EXPERIENCE
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AISA | Saint Petersburg | https://www.aisa.ru
Java Developer | April 2024 - August 2024

Project: Migration of regional budget planning system
         from Microsoft Access to Vaadin

Stack: Java 17, Vaadin 23, Spring Boot 2.7, Microsoft SQL Server

Responsibilities:
  * Migrated business logic from MS Access to Java application
  * Developed Vaadin web UI preserving familiar user experience
  * Ensured compatibility with existing budget planning systems
  * Tested all business processes post-migration

Results:
  * Successful deployment in government agencies
  * Full import substitution of proprietary software
  * Preserved familiar interface for end users
  * Reduced staff training costs
  * Eliminated Microsoft vendor lock-in
  * Improved system reliability and security


EDUCATION
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International East European College, Izhevsk
Associate Degree in Information Systems and Programming
Expected graduation: 2026


COLLABORATION PREFERENCES
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  * Remote work across Russia (any time zone)
  * Hybrid in Nizhny Novgorod
  * Office/hybrid in Kstovo

I aim to join a team focused on code quality and architecture,
where I can grow professionally while contributing meaningfully.