Нікіта

Nikita Zushchyk Backend Engineer
CONTACT Phone: [открыть контакты](см. выше в блоке «контактная информация») Github: https://github.com/NikitaZushchyk
Telegram: @Qwerty_1228 Linkedin: [открыть контакты](см. выше в блоке «контактная информация»)
Email: [открыть контакты](см. выше в блоке «контактная информация»)

SUMMARY Backend Engineer with 3 years of experience building scalable and
reliable web applications. I specialize in backend architecture,
optimizing high-load systems, and API integrations. My core expertise
lies in PHP, working extensively with relational databases, message
brokers, and caching layers. I have strong experience managing cross-
system communication, providing technical support for API consumers,
and delivering clean, maintainable code. Passionate about database
optimization, clean architecture, and modernizing legacy infrastructures.

Core Skills
PHP 8+, Laravel, SQL (MySQL/PostgreSQL), REST API, SOLID,
Redis, Elasticsearch, RabbitMQ, Docker, Git.

WORK Backend Engineer | INB Jun 2025 – May 2026
EXPERIENCE
Worked as a backend developer on internal systems, handling
simultaneous feature development across 3 core projects and providing Tier
3 technical support for API consumers.
Tech stack: PHP 7.4/8.2, Laravel, MySQL, Redis, Laravel Nova,
RabbitMQ, REST API.

Achievements
Developed and maintained complex backend logic across 3 concurrent
projects, successfully bridging internal systems (CRM and ORM)
running on different framework and language versions (PHP 7.4 to 8.2).
Built custom administrative actions, dashboards, and metrics using
Laravel Nova, enabling managers to efficiently process order states and
handle extensive logs_postback data.
Implemented background queue processing for asynchronous tasks
(e.g., archiving orders), significantly reducing UI blocking and ensuring
stable API performance.
Handled dedicated API technical support (50% of workload), diagnosing
data flow inconsistencies, debugging 500-level errors in production, and
resolving third-party integration bottlenecks.
Collaborated closely within a cross-functional team consisting of QA
engineers, UI designers, backend developers, and DevOps to integrate
external services (such as Jira) and streamline deployment pipelines.
Middle PHP Developer | Adducates Jun 2024 – May 2025
Worked as a full-stack developer on an internal ERP system designed to
aggregate and analyze e-commerce data for management.
Tech stack: PHP 8, CodeIgniter, PostgreSQL, Redis, jQuery, Amazon API.
Achievements
Maintained and refactored a legacy monolithic application built on
CodeIgniter, progressively improving code quality, readability, and
system stability.
Integrated and synchronized large volumes of data using the Amazon
SP-API and the Amazon Ads-API, ensuring accurate real-time updates
of inventory, sales metrics, and advertising campaign performance.
Worked extensively with a highly distributed PostgreSQL architecture
involving 6 database shards and time-based table partitioning.
Optimized complex SQL queries to run efficiently across partitioned
data.

Junior PHP Developer | WebFox Jun 2023 – April 2024
Worked as part of the backend team on the development and support of a
large-scale B2B platform for e-commerce
Tech stack: PHP 8, Laravel, MySQL, Redis, Elasticsearch, PHPUnit, REST
API.

Achievements
Designed and maintained RESTful APIs for a platform using PHP and
Laravel, focusing on clean code and reliable architecture.
Architected an automated parcel tracking system by integrating the
Nova Poshta API. Configured scheduled Cron tasks to batch-check
delivery statuses and utilized background queues (Jobs) to
asynchronously dispatch SMS notifications via TurboSMS.
Implemented an advanced fuzzy search functionality for the platform's
product catalog, significantly improving product discoverability and user
experience.