About Viktor
Senior Java Backend Engineer with 5+ years of experience designing and developing scalable backend systems using Java, Spring Boot, Kafka and microservices architectures.
I help companies build reliable APIs, modernize legacy applications and improve system performance. My experience includes real-time event processing, cloud-based platforms, CI/CD pipelines and distributed systems.
Key achievements include reducing API response times from 850ms to 250ms, contributing to microservice migrations and developing systems handling large volumes of real-time events.
Available for backend development, API design, microservices architecture, performance optimization and technical consulting.
English
Fluent
French
Conversational
Hebrew
Conversational
Russian
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- filmmakers,Full Stack developerDIGITAL AND ITJanuary 2025 - Today (1 year and 6 months)Paris, France● Led the migration of three core services from a monolithic system to a microservices architecture, improved deployment flexibility and reduced service downtime.● Designed, developed, and maintained full-stack features across major platform modules, including crew connection, film distribution, and skills development.● Improved overall user experience by delivering intuitive, high-performing, and seamless front-end and back-end functionality.● Collaborated in end-to-end development workflows using modern engineering practices.Stack: Typescript, React, Next.js, MUI, RabbitMQ, GitLab, CI/CD, microservices.
- Optimadevs,Full Stack developerDIGITAL AND ITJanuary 2022 - January 2025 (3 years)Rehovot, Israel● Engineered and integrated core modules for violation detection and penalty calculation, ensuring accurate and efficient enforcement workflows.● Constructed real-time data processing pipelines with Apache Kafka, enabling live monitoring of parking-space occupancy.● Optimized front-end modules, boosting page-load performance by 15%.● Implemented and hardened user authentication and authorization mechanisms using Spring Security and JWT.● Reduced API latency from 850 ms to 250 ms, significantly improving system responsiveness.● Contributed to deploying microservices that sustained platform stability at 99.7% uptime.● Developed responsive, interactive UI components using React.js, Redux, HTML5, and CSS3.Stack: Java, Spring Boot, Spring Security, JWT, Apache Kafka, MongoDB, React.js, Redux, Typescript, CSS3, Docker, REST API, Git.
- Arcadia,Full Stack DeveloperDIGITAL AND ITJanuary 2021 - January 2022 (1 year)St Petersburg, Russia● Developed flight booking web application, API development and system integration.● Developed and tested new features, identifying and addressing bugs to enhance system stability.● Shortened middle time of booking for 20% due to optimisation backend-logic and UI-stream.● Connecting microservices by Kafka. Kafka configuration, work with topics.● Increased productivity API for 20%, optimised queries to DB and caching.Stack: Java, Spring Boot, Spring Security, REST API, MySQL, React.js, Redux, Git, Maven
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Education
- Masters Degree — Mathematical Methods in EconomicsSaint-Petersburg State University of Economy and Finance2010Masters Degree — Mathematical Methods in Economics
- Full Stack Java DevelopmentTel Ran College of Programming & Software Engineering2024Full Stack Java Development