Oleksandr

OLEKSANDR
RADIONOV
Full-stack Developer

⏹
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Cherkasy, Ukraine | Gitlab | Tg:@Fokk_ubuntu

Software Developer with 9 years of experience delivering complex software solutions in inventory
management, logistics, education, and e-commerce. Skilled in designing and developing scalable
platforms that support business-critical processes, including inventory tracking, warehouse
management, order fulfillment, and product movement across supply chains.

TECHNICAL SKILLS
Programming languages: Typescript, Javascript, PHP
Front-end: React, React Query, Redux Toolkit, TailwindCSS
Back-end: NestJS, Node.js, Symfony, REST API, WebSocket
Database: TypeORM, Prisma, Doctrine, PostgreSQL, MySQL, MsSQL, Redis, dbdiagram.io
Tools: Git, Jira, Redmine, Swagger, Postman, Chrome Devtools, Figma, Vite, Docker, Creatly
AI Tools: Claude Code
Language: Ukrainian (native), English (B1)

WORK EXPERIENCE - DEVELOP
Freelance, Full-stack Developer 2024 – Present

Products system

Designed and developed RESTful APIs for a logistics platform, enabling efficient inventory movement between
warehouses and providing analytical tools for generating operational and inventory-based statistics. Contributed
to improving data management processes and supporting business decision-making through reliable reporting
capabilities.

Technology Stack: NestJS, Prisma, PostgreSQL, Redis

Restaurant reservation management system

Contributed to the maintenance and evolution of a restaurant reservation platform that aggregates real-time data
on restaurant availability and occupancy. Implemented and supported booking workflows that allow users to
reserve tables for specific dates and times while handling complex concurrency scenarios, including overlapping
and near-simultaneous reservations, to ensure data consistency and prevent double booking conflicts.

Technology Stack: NestJS, TypeORM, PostgreSQL, React.js, TailwindCSS

Financial Data Aggregation System

Led the architecture design and development of a financial data aggregation platform integrating multiple banking
APIs. The system consolidates user financial data into a unified dashboard, providing a comprehensive view of
income and expenses across accounts.

Implemented functionality to support cash flow analysis, tax planning, and expense management, helping users
reduce liquidity gaps and make more informed financial decisions based on aggregated data insights.

Technology Stack: NestJS, Prisma, PostgreSQL, React.js, Redux Toolkit

FMC-DEV, Back-end Developer 2017 – 2022

School digitalization system

Developed and maintained a digital school management platform used by more than 200 schools. The system
provided access to student grades, attendance tracking, and check-in/check-out records, while also enabling the
generation of reports for both parents and teachers.
Additionally, contributed to the development of several integrated modules, including a student transportation
payment system, a school meal payment system, and a library management platform. These solutions helped
streamline administrative processes and improve the overall digital experience for students, parents, teachers, and
school staff.

Technology Stack: Symfony 3, Symfony 4, Doctrine, MsSQL, Twig

Logistic System

Developed RESTful APIs for a maritime logistics platform focused on container transportation and freight cost
calculation. Implemented business logic for shipment pricing based on country- and port-specific taxes,
transportation distances, and industry-specific maritime shipping regulations.

Technology Stack: Symfony 4, Doctrine, MySQL

Car sharing System

Built and enhanced the backend services powering a peer-to-peer car-sharing platform, enabling users to rent
vehicles from other owners and offer their own cars for rental. Implemented core location-based functionality,
including vehicle discovery on interactive maps, real-time display of available cars, and geospatial filtering based
on user-defined search radius.

Technology Stack: Symfony 4, Doctrine, MySQL

Commercial E-commerce Projects

Developed and customized multiple e-commerce platforms built on CMS solutions, primarily for clothing and
fashion brands. Implemented custom features, integrated third-party services, and adapted platform functionality
to support business processes, product management, and online sales operations.

Technology Stack: OpenCart, MySQL

2015 – 2017
Forsaken Labs, Mobile Developer

Contributed to the maintenance and ongoing development of multiple gaming projects, implementing new
features, resolving issues, and improving overall system stability and performance.

WORK EXPERIENCE - MENTOR
Emolod, Mentor 2019 – Present

Served as a mentor in a free educational program for teenagers aged 14–18, contributing across 16 program
seasons. Guided students in software development fundamentals, project-based learning, and practical
programming skills.

The program currently includes four learning tracks: two C# groups for different skill levels, a Frontend
Development track focused on React.js, and a Backend Development track focused on NestJS. Supported students
through hands-on projects, code reviews, and technical consultations.

MakerSpace, Mentor 2024-2025

Mentored students in a free educational program focused on Frontend Development. Provided guidance on modern
web technologies, supported project-based learning, and helped students strengthen their practical software
development skills.

Private lyceum Educator, Teacher 2023-2024

Led the Programming track for students in grades 5–11 at a private school. Designed and delivered educational
content, guided students through programming concepts and practical projects, and helped develop their
problem-solving, logical thinking, and software development skills.


CodeWe, Mentor 2023

Participated in an educational initiative organized by a charitable foundation, teaching programming fundamentals
to women pursuing a career change into the technology sector. I introduced participants to software development
concepts, problem-solving techniques, and practical coding skills.

WORK EXPERIENCE - OTHER

UNHCR, Specialist 2022-2024

The UN office in Cherkasy region, which dealt with displaced persons from the areas of hostilities

PET PROJECTS
Warehouse Buyer System

Designed and developed a specialized business management platform tailored to the needs of a children's clothing
retailer. Implemented features for inventory tracking, customer management, purchasing workflows, and product
measurement management.

Developed a flexible sizing system that allowed custom size charts to be created for each product, addressing
inconsistencies between manufacturer sizing standards. Automated size chart distribution reduced manual
communication efforts and helped customers make more informed purchasing decisions.

Frontend Repo

Backend Repo

Technology Stack: NestJS, TypeORM, PostgreSQL, React.js, React Query

EDUCATION
Kyiv National University of Technologies and Design 2010 – 2014
Faculty of System programming

Cherkasy Polytechnic College 2006 – 2010
Faculty of Programming