You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Viktor KrisiatetskiiVK

Viktor Krisiatetskii

Full Stack developer

€450/day
Paris, FR
3-7 years

Average response time: 1 hour

About Viktor

I’m a full-stack Developer with over four years of experience, mainly focused on backend development. Currently, I’m working as a full-stack developer on a volunteer project in Paris.
I led the migration of several core services from a monolith to microservices, which reduced downtime and improved deployment flexibility.
I work with TypeScript, React, Next.js, RabbitMQ and CI/CD pipelines.
For the last three years, I’ve been working at a global software company, where I helped develop a parking monitoring system. My work includes designing and building microservices using Java, Spring, Node.js, Docker, and CI/CD pipelines. On the frontend, I use Typescript, React, and CSS to support a responsive user interface.
  • English

    Native or bilingual

  • French

    Basic

  • Hebrew

    Conversational

  • Russian

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • filmmakers,
    Full Stack developer
    DIGITAL AND IT
    January 2025 - Today (1 year and 5 months)
    Paris, France
    • ● Led the migration of three core services from a monolithic system to a microservices architecture, increasing deployment flexibility and reducing service downtime by 30%.
    • ● 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.
    RabbitMQ Typescript Git Node.js
  • Optimadevs,
    Full Stack developer
    DIGITAL AND IT
    January 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.
    Java Spring boot React.js HTML5 CSS3
  • Arcadia,
    Full Stack Developer
    DIGITAL AND IT
    January 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
    Java Spring boot API REST MySQL redux

Recommendations

Be the first to recommend Viktor

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Masters Degree — Mathematical Methods in Economics
    Saint-Petersburg State University of Economy and Finance
    2010
    Masters Degree — Mathematical Methods in Economics
  • Full Stack Java Development
    Tel Ran College of Programming & Software Engineering
    2024
    Full Stack Java Development

Skill set

Categories