Work

Work, with the reasoning left in

Each system here has its reasoning kept in. Read the decision record if you want to know how I think; read the retro if you want to know whether I am honest about it.

Multi-tenant B2B SaaS

2026
Python · FastAPI · PostgreSQL

In development

ReplyDeck

Lead discovery and outreach for teams. In development, not yet public.

Many separate customer organisations, each with its own Telegram accounts and its own secrets, all on one modest VPS - with nothing leaking sideways between them. And I am the only person on call for it.

Decision record → 4 records 13 825 lines, application

Telegram commerce, real business

2026
FastAPI · aiogram 3 · React · SQLite

Running tandir.top

Tandyr

Storefront, bot and public site for a working kitchen: catalogue, cart, and orders that land straight in the staff's Telegram.

The customer is a kitchen, not a tech company. Orders must arrive whether the buyer is in Telegram or on a web page, the staff side has to be usable from a phone mid-shift, and nobody there will ever open a terminal.

Decision record → 4 records 4 213 lines, backend

Co-op heist prototype · Photon Fusion + Voice

2026
Unity 6 · C# · Photon Fusion 2

Playable build

Getaway

Built to see how Photon Fusion and Photon Voice behave in a real scene; grew into a solo heist that plays end to end.

No art team, no level designer, no budget. Everything the player walks through has to come from free asset packs plus code, and the whole block has to be rebuildable from scratch after any change.

Decision record → 4 records 10 723 lines of C#

Realtime browser game

2026
Node · WebSocket · Web Speech API

Running sp1le.tech/voiceduel

Voice Duel

Two players race to say the right answer out loud. The first correct voice does the damage.

Speech recognition, matchmaking and an opponent for people who arrive alone - on a hobby budget, with no API key for the player to obtain and no audio leaving their browser.

Decision record → 4 records 2 401 lines of JavaScript

Contact

Full-cycle software engineer

Start a conversation

Tell me what you are building and what is in the way. I answer personally, usually the same day.

stasyukdmitriy2602@gmail.com Telegram @decimal128 LinkedIn github.com/sp1le