Олег

Oleh Bohak
Middle Frontend Developer

[открыть контакты](см. выше в блоке «контактная информация») [открыть контакты](см. выше в блоке «контактная информация») Ivano-Frankivsk, UA, Ukraine

Summary Experience
Frontend Developer experienced in Middle Frontend Developer Jan 2025 - Feb 2026
building complex web interfaces for Expletech Ivano-Frankivsk, UA, Ukraine
accounting and bonus systems,
including the MSD Bravecto Designed and developed web-based interfaces for internal accounting
program. Strong in REST API consoles of the MSD Bravecto bonus program.
integration, performance Implemented QR and barcode scanning functionality within web and
optimization, and real-time internal console applications.
QR/barcode workflows, with solid Implemented functionality for bonus accruals, redemptions, adjustments,
backend understanding for full- and financial reconciliation.
cycle feature delivery. Integrated with internal and external REST APIs to synchronize financial
and transactional data.
Managed API communication, including authentication, error handling,
Skills request/response validation, and data mapping.
Optimized performance for large datasets (filtering, pagination, lazy
TypeScript loading, asynchronous data fetching).
Advanced Implemented role-based access control for accountants, administrators,
and program managers.
React
Expert
Junior Frontend Developer Feb 2024 - Jan 2025
Before After Kyiv, UA, Ukraine
NEXT.js
Advanced
Developed and maintained eCommerce platforms with focus on
Tanstack Query performance, scalability, and user experience.
Advanced Implemented product catalog management, dynamic pricing,
promotions, and discount logic.
React Hook Integrated payment gateways (secure checkout flows, transaction
Form/zod/formik/yup Advanced validation, refund handling).

API Authentication T rainee Frontend Developer Apr 2023 - Feb 2024
Expert Projection Ivano-Frankivsk, UA, Ukraine

REST API Developed user-friendly web applications with a focus on responsive
Expert design and optimal user experience.

ECommerce
Development Expert Education
Performance
Software engineer - Bachelor of Engineering (BEng)
Optimization Advanced
Ivano-Frankivsk National Technical University of Oil and Gas
Version Control 2019 - 2023 Ivano-Frankivsk, Ukraine
Expert

QR Code
Implementation Expert
RTK/ RTK query
Advanced

JavaScript
Expert

Languages
English
Intermediate

Ukrainian
Native

Russian
Fluent