[nom]

Senior Rust & Java Developer | Backend Architect | Tech Mentor

[e-mail] · [téléphone] · Telegram : [lien]

[lien] · [lien]

TECHNICAL SKILLS

Rust Programming (3+ years) · Java Ecosystem (15+ years)

Actix Web · Axum · Tokio · Serde · [nom] · Spring Boot · Spring Cloud · Spring Data JPA

Rayon · reqwest · async/await · Spring Security · Hibernate · MyBatis · Maven · Gradle

Databases & Storage · Cloud & DevOps

PostgreSQL · Oracle DB · MySQL · Redis · ClickHouse · AWS · Google Cloud · Docker · Jenkins CI/CD · Git

ElasticSearch · Linux

Messaging & APIs · Architecture & Design

Apache Kafka · RabbitMQ · gRPC · REST API · Microservices · Event-Driven · DDD · System Design

WebSocket · GraphQL · API Design · Scalability

PROFESSIONAL SUMMARY

Senior Backend Developer with 15+ years of Java expertise and 3+ years of hands-on Rust development.

Specialized in building high-performance, scalable backend systems that process hundreds of thousands of daily transactions while maintaining 99.9% uptime. At gtfs.pro, I lead backend development for public transit

APIs handling 10K+ daily requests with 35% lower latency after migrating to async Rust architecture. Previously at Teamwork Commerce (Uniqlo platform), I engineered distributed systems processing 500K+ daily transactions across multiple regions. My work combines technical depth with business impact, focusing on microservices architecture, event-driven systems, and cloud-native solutions. Beyond engineering, I'm passionate about mentorship, having trained 200+ students with a 75% employment success rate.

Core Expertise · Leadership

Microservices • Event-Driven Design • System Architecture · Technical Mentorship • Team Development • Code Review

• Performance Optimization • Cloud Infrastructure · • Best Practices • Developer Training

Tech Stack · Availability

Rust (Actix, Tokio) • Java (Spring Boot) • PostgreSQL • · Full-time or Contract • Remote Ready • 2 Weeks Notice •

AWS/GCP • Docker • Kafka • Redis · Open to Relocation

PROFESSIONAL EXPERIENCE

Rust Developer · February 2022 - Present

gtfs.pro

Rust, Actix Web, Tokio, Java 21, Spring Boot 3, PostgreSQL, gRPC, Docker

Architected microservices infrastructure handling 10,000+ daily API calls for real-time public transit data processing

Reduced API response latency by 35% through implementation of async Rust architecture with Tokio runtime

Built RESTful APIs serving transit schedules, real-time updates, and route optimization data to mobile/web clients

Implemented data aggregation pipelines processing GTFS data from multiple transit agencies

Senior Java Developer · April 2022 - April 2025

Teamwork Commerce (Uniqlo Retail Platform)

Java 23, Spring Boot, Hibernate, Docker, PostgreSQL, Redis, AWS, Google Cloud Platform

Designed enterprise backend systems processing 500,000+ daily transactions for global retail operations

Improved data synchronization performance by 25% through optimization of batch processing and caching strategies

Implemented hybrid AWS/GCP cloud infrastructure ensuring high availability and disaster recovery

Developed microservices for retail inventory management, order processing, and POS integration

Led team of 3 junior developers, conducting code reviews and establishing Spring Boot best practices

Achieved 99.9% uptime through circuit breakers, retry policies, and comprehensive monitoring

Senior Backend Java Developer · June 2016 - April 2022

Almexoft

Java 11, Spring Boot, Apache Kafka, ClickHouse, ElasticSearch, Apache Tomcat 10

Developed real-time analytics platform serving 100,000+ active users with sub-second query response times

Reduced data processing time by 15% through query optimization and columnar database implementation

(ClickHouse)

Maintained 99.9% system uptime across distributed microservices architecture

Implemented event-driven architecture using Apache Kafka for streaming analytics and real-time processing

Built full-text search capabilities using ElasticSearch for log analysis and business intelligence dashboards

Mentored 5 junior developers in Spring Boot best practices and microservices design patterns

Java Developer · May 2013 - June 2016

Massmo Group (Tele2 Telecommunications)

Java 7, Spring Framework, Hibernate, Oracle Database, Apache Tomcat 7

Developed telecom billing systems and CRM platforms for major telecommunications provider

Managed Oracle databases with millions of customer records and transaction data

Implemented business logic for subscription management, billing cycles, and payment processing

Optimized database queries reducing report generation time by 40%

Junior Java Developer · August 2009 - February 2013

IDC ([lien])

Java 6, Spring Framework, Hibernate, Oracle Database, Apache Tomcat 6

Built web applications and backend services using Spring MVC framework

Developed internal tools and customer-facing portals

Gained foundational experience in enterprise Java development, database design, and web services

KEY ACHIEVEMENTS

gtfs.pro Platform: Designed microservices infrastructure enabling 10,000+ daily users to access real-time transit data

Enterprise Scale: Built systems handling 500,000+ daily transactions with 99.9% uptime SLA

Performance Leadership: Reduced API latency by 35% and data processing time by 15-25% across multiple systems

Mentorship Impact: Trained 200+ students achieving 75% employment rate, helped 10+ engineers advance to senior positions

Cloud Migration: Implemented hybrid AWS/GCP infrastructure reducing operational costs by 20%

EDUCATION

Master of Telecommunications

Odesa National Academy of Telecommunications

Graduated 2008

Bachelor of Information Systems

Odesa National Academy of Telecommunications

Graduated 2007

LANGUAGES

Ukrainian · Russian · English

Native Speaker · Native Speaker · Professional (B2+)