Kyrylo

Fullstack-розробник

Employment type:: full-time, part-time
Age:: 22 years
City of residence:: Dnipro
Ready to work:: Remote

Contact information

The job seeker has provided: Phone numberEmailMessenger

You can get this candidate's contact information from https://www.work.ua/resumes/11086624/

Work experience

Fullstack Developer

from 12.2024 to now (1 year 10 months)
NIC.UA, Дніпро (IT)

JEXI — AI-Powered SaaS Support Platform

*Led a large-scale refactoring of the application, restructuring legacy
modules, removing duplicated logic, and simplifying core workflows to
make the codebase easier to maintain and extend.
*Redesigned application boundaries by moving business logic, validation,
and data-processing methods from the frontend to the backend,
improving performance by up to ~60% while making the system more
secure and maintainable.
*Moved critical business logic, validation, and permission checks from the
frontend to the backend, improving security, consistency, testability, and
separation of concerns across the application.
*Implemented security improvements required for the Google CASA
assessment, resolving identified vulnerabilities and helping the platform
successfully pass the review and receive approval for Gmail API access.
*Built and integrated the mobile-responsive version of JEXI, adapting core
workflows and interfaces for reliable use across desktop and mobile
devices.
*Developed the AI knowledge-base workflow, including indexed knowledge
retrieval, context selection, human review, and an approval process that
allows corrected AI drafts to become reusable support knowledge.
*Implemented human-in-the-loop AI workflows where generated customer
responses can be reviewed, corrected, and approved by support managers
before being sent.
*Integrated Gmail API and Amazon SES into the product, enabling email
accounts to be connected and customer communication to be handled
directly inside JEXI.
*Improved application reliability in production by strengthening error
handling, fixing recurring production issues, and refactoring unstable parts
of core workflows.

Education

UMSF

125, Дніпро
Unfinished higher, from 2022 to 2026 (4 years)

Additional education and certificates

DAN.IT EDUCATION - Java developer

2023-2024
Certificate

Technological University STEP

2018-2021
Certificate

Knowledge and skills

Працьовитість
Java
Git
Знання принципів ООП
SQL
Spring Framework
Spring Boot
Java Core
Hibernate
MySQL
PostgreSQL
Apache Maven
JUnit
IntelliJ IDEA
Docker
Знання технологій JDBC
TypeScript
Next.JS
React
OIDC
Keycloak
Gmail API
Redis
REST API
RESTful Web Services
WebSocket
Prisma
Spring Security
Spring m
Spring MVC
Apache Kafka
Mockito
Codex

Language proficiencies

English — average