I am a driven Full Stack Developer with 4+ years of experience building cloud-based platforms with microservices. I specialize in Spring, Kafka, DBMS, API integration, and deploying full-stack solutions using Docker and CI/CD. I’ve delivered measurable improvements across projects, including reducing API latency from 850 ms to 250 ms at Optimadevs, and I enjoy collaborating across frontend and backend teams to ship robust, user-friendly features.

Viktor Krisiatetskii

I am a driven Full Stack Developer with 4+ years of experience building cloud-based platforms with microservices. I specialize in Spring, Kafka, DBMS, API integration, and deploying full-stack solutions using Docker and CI/CD. I’ve delivered measurable improvements across projects, including reducing API latency from 850 ms to 250 ms at Optimadevs, and I enjoy collaborating across frontend and backend teams to ship robust, user-friendly features.

Available to hire

I am a driven Full Stack Developer with 4+ years of experience building cloud-based platforms with microservices. I specialize in Spring, Kafka, DBMS, API integration, and deploying full-stack solutions using Docker and CI/CD.

I’ve delivered measurable improvements across projects, including reducing API latency from 850 ms to 250 ms at Optimadevs, and I enjoy collaborating across frontend and backend teams to ship robust, user-friendly features.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

English
Fluent
Russian
Fluent
French
Beginner
Hebrew (modern)
Advanced

Work Experience

Full Stack Developer at Optimadevs Ltd, Rehovot, Israel
November 1, 2022 - June 5, 2024
Developed and maintained the web application for Parking Monitoring and Parking Fine System. Collaborated with cross-functional teams to gather requirements and translate them into technical specifications. Implemented real-time data collection and processing functionalities. Designed and integrated the Parking Fine System ensuring accurate violation detection and penalty calculation. Implemented secure user authentication and authorization mechanisms prioritizing data privacy and system security. Optimized the parking management API, reducing average response time from 850ms to under 250ms by implementing caching and asynchronous database queries. Deployed application using Docker and GitLab CI/CD pipelines.
Java Backend Developer at Arcadia JSC, St-Petersburg, Russia
July 1, 2021 - September 30, 2022
Assisted the development team in building a content management system using Java and Spring Framework. Developed back-end part for mobile/web applications. Refactored implemented functionality and integrated payment systems. Developed and tested new features, identified and addressed bugs to enhance system stability. Connected microservices by Kafka. Configured Kafka and managed topics. Created JUnit tests and Mockito Mock tests, increasing test coverage by 20%. Supported frontend-backend communication via REST APIs.
Full Stack Developer at Elros Ltd, St-Petersburg, Russia
December 1, 2019 - July 31, 2021
Implemented custom configurations and modules to meet client-specific requirements for accounting software. Updated standard and modified information databases, configured systems of rights, roles, and access. Developed integration systems with third-party services such as conversion and external sources. Consulted clients on implementation and configuration of the 1C system. Participated in projects for the transition from earlier versions of 1C to the latest releases. Developed strategies of optimization processes using ERP for increasing efficiency.
Project Manager at Administration of the Leningrad region
August 1, 2011 - November 30, 2019
Collected and analyzed data for compiling reports on the progress of the gasification programs of the Leningrad Region.
Full Stack Developer at Optimadevs Ltd, Rehovot, Israel
November 1, 2022 - Present
Developed and maintained the web application for Parking Monitoring and Parking Fine System. Collaborated with cross-functional teams to gather requirements and translate them into technical specifications. Implemented real-time data collection and processing functionalities. Designed and integrated the Parking Fine System ensuring accurate violation detection and penalty calculation. Implemented secure user authentication and authorization mechanisms, prioritizing data privacy and system security. Optimized the parking management API, reducing average response time from 850ms to under 250ms by implementing caching and asynchronous database queries. Deployed applications using Docker and GitLab CI/CD pipelines.
Java Backend Developer at Arcadia JSC, St-Petersburg, Russia
September 30, 2022 - July 30, 2025
Assisted the development team in building a content management system using Java and Spring Framework. Developed backend parts for mobile and web applications. Refactored implemented functionality and integrated payment systems. Tested new features, identified and addressed bugs to enhance system stability. Connected microservices using Kafka, configured Kafka topics. Created Junit and Mock tests (Mockito), increasing test coverage by 20%. Supported frontend-backend communication via REST APIs.
Accounting software Developer at Elros Ltd, St-Petersburg, Russia
July 1, 2021 - July 30, 2025
Implemented custom configurations and modules to meet client-specific requirements. Updated standard and modified information databases, configured systems of rights, roles, and access. Developed integration systems with third-party services (conversion, external sources). Consulted clients on implementation and configuration of the 1C system. Participated in projects for transitioning from earlier versions of 1C to the latest releases. Developed strategy of optimization processes using ERP for increasing efficiency.
Project manager at Administration of the Leningrad region
November 30, 2019 - July 30, 2025
Collected and analyzed data for compiling reports on the progress of the gasification programs of the Leningrad Region.
Full Stack Developer at Elros Ltd
November 1, 2022 - Present
Collaborated with cross-functional teams to gather requirements and translate them into technical specifications. Implemented real-time data collection and processing functionalities. Designed and integrated the Parking Fine System ensuring accurate violation detection and penalty calculation. Developed secure user authentication and authorization mechanisms with a focus on data privacy and system security. Optimized the parking management API, reducing average response time significantly by using caching and asynchronous database queries. Deployed applications using Docker and GitLab CI/CD pipelines.
Backend Developer at Optimadevs Ltd
September 30, 2022 - August 8, 2025
Developed and maintained mobile and web backend platforms, refactored functionalities to improve performance and stability. Integrated payment systems and connected microservices using Kafka, including Kafka configuration and topic management. Created unit and mock tests using JUnit and Mockito, increasing test coverage substantially. Supported frontend-backend communication via REST APIs. Implemented custom configurations and modules to meet client-specific requirements.
Project Manager at Administration of the Leningrad region
November 30, 2019 - August 8, 2025
Collected and analyzed data to compile reports on the gasification programs of the Leningrad Region. Developed and maintained a web application for Parking Monitoring and Parking Fine System. Assisted development team in building a content management system using Java and Spring Framework. Managed updates of standard and modified information databases, configured systems of rights, roles, and access. Developed integration systems with third-party services, consulted clients on implementation and configuration of the 1C system. Led projects transitioning from earlier versions of 1C to the latest releases. Developed strategies for optimization processes using ERP to increase efficiency.
Full Stack Developer (Volunteer) at Filmmakers
January 1, 2025 - Present
Led 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 modules such as crew connection, film distribution, and skills development. Improved user experience with high-performing front-end and back-end functionality. Collaborated in end-to-end development workflows using modern engineering practices.
Full Stack Developer at Optimadevs
January 1, 2022 - January 1, 2025
Engineered and integrated core modules for violation detection and penalty calculation. Built real-time data processing pipelines with Apache Kafka for live monitoring of parking-space occupancy. Optimized front-end modules to boost page-load performance by 15%. Implemented authentication/authorization with Spring Security and JWT. Reduced API latency from 850 ms to 250 ms and contributed to microservice deployments ensuring 99.7% uptime. Developed responsive UI components with React.js, Redux, HTML5, and CSS3.
Automation Technician at Arcadia
January 1, 2021 - January 1, 2022
Developed flight booking web application, API development and system integration. Implemented features, fixed bugs to enhance stability, and optimized backend logic and UI streams to shorten booking times by 20%. Connected microservices using Kafka with topic management. Improved productivity API by optimizing database queries and caching.
ERP/Accounting Software Consultant at Elros
January 1, 2019 - January 1, 2021
Implemented client-specific configurations and modules for accounting software. Updated and maintained information databases, configured access rights, and developed integrations with external services. Advised clients on ERP implementation and configuration to improve efficiency.
Backend Developer at Arcadia
January 1, 2021 - January 1, 2022
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.
Accounting Software Developer at Elros
January 1, 2019 - January 1, 2021
Implemented custom configurations and modules to meet client-specific requirements. Updated standard and modified information databases, configure systems of rights, roles and access. Developed integration systems with third-party services (conversion, external sources). Consulted clients on implementation and configuration of the 1C system. Developed strategy of optimisation processes using ERP for increasing efficiency.
Full Stack Developer at filmmakers
January 1, 2025 - Present
Led the migration of three core services from a monolithic system to a microservices architecture, increasing deployment flexibility and reducing service downtime by 30%. Scaled the platform by delivering 10+ full-stack features for core modules (distribution & recruitment), resulting in a 20% increase in user engagement. Improved overall user experience by delivering intuitive, high-performing front-end and back-end functionality. Collaborated in end-to-end development workflows using modern engineering practices.
Full Stack Developer at Arcadia
January 1, 2021 - January 1, 2022
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. Connected microservices via Kafka; Kafka configuration and topics management. Increased productivity of API interactions and optimized queries to DB with caching.
Full Stack Developer at Elros
January 1, 2019 - January 1, 2021
Implemented custom configurations and modules to meet client-specific requirements. Updated standard and modified information databases, configured systems of rights, roles and access. Developed integration systems with third-party services (conversion, external sources). Consulted clients on implementation and configuration of the 1C system. Developed strategy of optimisation processes using ERP for increasing efficiency.

Education

Masters Degree at Saint-Petersburg State University of Economy and Finance
January 1, 2005 - December 31, 2010
Masters Degree at Saint-Petersburg State University of Economy and Finance
January 1, 2005 - December 31, 2010
Master's Degree in Mathematical Methods in Economics at Saint Petersburg State University of Economy and Finance
January 1, 2005 - January 1, 2010
Full Stack Java Development at JavaRush Online University
January 1, 2020 - January 1, 2021
Full Stack Java Development at Tel Ran College of Programming & Software Engineering
January 1, 2022 - January 1, 2023
Master's Degree in Mathematical Methods in Economics at Saint-Petersburg State University of Economics and Finance
January 11, 2030 - November 19, 2025
Master's Degree at Saint-Petersburg State University of Economy and Finance
January 1, 2010 - December 12, 2025
Full Stack Java Development at Tel Ran College of Programming & Software Engineering
January 1, 2024 - December 12, 2025
Masters Degree at Saint-Petersburg State University of Economy and Finance
January 1, 2010 - January 21, 2026
Full Stack Java Development at Tel Ran College of Programming & Software Engineering
January 1, 2024 - January 21, 2026
Master's Degree at Saint-Petersburg State University of Economy and Finance
January 11, 2030 - January 1, 2010
Full Stack Java Development at Tel Ran College of Programming & Software Engineering, Haifa, Israel
January 11, 2030 - January 1, 2024

Qualifications

Full Stack Java Development
January 1, 2022 - December 31, 2023
Full Stack Java Development
January 1, 2020 - December 31, 2021
Full Stack Java Development
January 1, 2020 - December 31, 2021
Full Stack Java Development
January 1, 2022 - December 31, 2023
Master's Degree in Mathematical Methods in Economics
January 11, 2030 - November 19, 2025
Master's Degree in Mathematical Methods in Economics
January 11, 2030 - January 1, 2010
Full Stack Java Development
January 11, 2030 - January 1, 2024

Industry Experience

Software & Internet, Government, Financial Services, Professional Services, Energy & Utilities, Education, Computers & Electronics, Media & Entertainment