Oleksandr Barskyi
Engineer based in Kharkiv, Ukraine. Eight years of production software: websites, storefronts, mobile apps, backends and hardware that reports from the field.
Summary
What I actually do
Independent engineer with production experience across web, mobile, backend, embedded, analytics and data-heavy systems since 2018.
Day to day that means client websites and storefronts, application interfaces, APIs and integrations, dashboards, authentication and subscription flows, and the maintenance that keeps all of it running afterwards.
Work is delivered end to end: design, build, launch and support, with an AI-assisted pipeline handling repetition and monitoring, and specialists brought in when a project needs them.
Working style
- One person accountable from the first call to the site being live.
- Comfortable with production launches, migrations and the maintenance afterwards.
- Specialists and an AI-assisted pipeline join where they make the work faster, never where they make it vaguer.
Capabilities
Skills
Technologies grouped by the kind of work they get used for.
Frontend
E-commerce
Mobile
Backend / API
Infrastructure
Additional
Track record
Experience
Eight years of shipping, from firmware in the field to storefronts on the web.
Independent engineer — websites and applications for clients
May 2022 – Present
- Deliver websites, storefronts, mobile apps, APIs and integrations as an independent engineer.
- Build React, Next.js and TypeScript interfaces, Node.js APIs, dashboards, authentication, onboarding and subscription flows.
- Handle the parts clients rarely see: content migration, domains, DNS, business email, analytics and zero-downtime launches.
- Support and maintain delivered sites, with response times agreed in the contract.
Frontend / full-stack contributor — DreamX-related products
2022 – 2026
- Worked with DreamX and collaborators on a series of web and application projects, including BudgetYid.
- Built and improved customer-facing flows, frontend screens, backend interactions and product features.
- Created the DreamX website in 2022; it has been maintained by their own team since.
Mobile application developer — SizeMatch
2023
- Built a mobile application released on the App Store.
- Worked on user-facing flows, UI implementation and production delivery.
System architect
Sep 2019 – Feb 2022
- Built systems for electric vehicle charging stations: React web client, Spring Boot server, OCPP embedded Java application and a mobile client.
- Worked on a virtual exhibition product with a React client, Unity WebGL and a Spring Boot backend.
- Set up the GitLab instance, development, testing and production environments, and the deployment workflow.
Software engineer
May 2018 – Sep 2019
- Worked on RadmirTech analytical and embedded products.
- Created STM32 firmware sending gas meter data to a server.
- Built a Spring Boot backend collecting that data into PostgreSQL.
- Created the HTTP endpoints used by the frontend.
Web programming teacher
Jan 2017 – Sep 2018
- Taught HTML, CSS and JavaScript to school students.
- Helped students build and publish their own websites.
Portfolio
Selected projects
SizeMatch mobile app
A mobile app built and released on the App Store.
Open project ↗BudgetYid
A budgeting product with user-facing financial flows, structured data handling and production frontend work.
Open project ↗DreamX website
A company website built in 2022 and maintained by the DreamX team since.
Open project ↗NB-IoT monitoring systems
Server-side and embedded work for monitoring products: data collection, backend communication and production reliability.
Open project ↗Storefront sample
A public storefront sample showing product data patterns, cart-oriented UI and deployment-ready frontend structure.
Open project ↗E-commerce theme challenge
A public theme-level e-commerce implementation built as a take-home challenge.
Open project ↗Background
Education
2022 – Present
PhD candidate
V. N. Karazin Kharkiv National University
2021
Master's degree
V. N. Karazin Kharkiv National University
2021
Mathematical engineering
University of L'Aquila
Communication
Languages
Ukrainian
Native
English
B2
Italian
B2
Russian
C1
Want to see what this looks like for your business?
We build the demo first. You decide afterwards.