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© 2026 Oleksii Berliziev.
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Oleksii Berliziev
2projects
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2projects
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15 products taken from zero to live: SaaS, mobile, platforms. Shipped, scaled, still in production.

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TeamFull StackSaaSSports2022–2026

Golf Tournament Platform

All Square
Tech Lead
Team 7–11

A platform the founders' team runs themselves. They author pages, manage mobile-app sections and scan tickets on-site during live events. No developer in the loop after launch.

Greenfield tournament platform, live since 2022. - Web app with an admin dashboard and a built-in no-code page builder; - iOS and Android apps with separate user and on-site admin modes for ticket scanning; - NestJS backend with background workers. Held the whole platform alone in the final year, including a full content migration from the old site.

Outcomes

  • Three tournament editions, four years in production
  • Thousands of concurrent users on tournament days
  • On-site ticket scanning during live rounds
  • Operations team ships product changes without a developer in the loop
  • Full content migration from the old site (pages, media, historical results)
See how it shipped
LinksLive AppApp StoreGoogle Play
Personal projectFull StackSaaSIoT2016–present

Home Security Platform

Personal
Developer
Team 1

A self-hosted home-security system rebuilt four times across a decade, from camera-to-cloud, through a full mobile + sensor stack, to a leaner Telegram-bot worker running on a Raspberry Pi today.

Solo, self-hosted home-security platform in its tenth year, rebuilt four times. v1 streamed camera footage to Google Drive. v2 added a full backend. v3 grew into a full mobile app with RFID access and a CO₂ sensor. v4 deliberately cut everything back to a Raspberry Pi running a Telegram-bot worker: camera capture + cloud upload, alerts and control via chat, no web UI, no mobile app, no cloud bills. Running today across three locations.

Outcomes

  • Four architecture iterations over a decade (2016 to today)
  • Deliberate v3 → v4 simplification: full mobile + sensor stack to a Telegram-bot worker on a Raspberry Pi
  • Hardware integration: GPIO, RFID, CO₂ sensor on Raspberry Pi
  • Running today across three locations with zero cloud bills
How I shipped it
LinksPrivate / NDAMore details available on request

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