Fintech / 2014–2016
Bitcoin Exchanges / Mycelium
Early crypto-exchange infrastructure spanning order books, wallets, payment integrations, and operational tooling.
Three exchange systems built across the full transaction path, including the public php_btc_exchange codebase.

- Role
- Full-stack exchange engineer
- Timeframe
- 2014–2016
- System
- Fintech
Overview
The system in context.
Between 2014 and 2016, Nikita built three early cryptocurrency exchange systems, working from trading and matching logic through wallets, account interfaces, payment integrations, and administration.
The public php_btc_exchange repository documents BTC and LTC support alongside legacy payment rails including EGOPay, Perfect Money, OKPay, and Yandex Money. Product captures preserve both trader-facing order books and the operational dashboard.
What shipped
- Built across matching, wallet, account, payment, and administration layers.
- Supported spot-market interfaces with live bids, asks, balances, and price charts.
- Integrated multiple cryptocurrency and legacy electronic-payment rails.
- Released a substantial exchange codebase publicly for inspection and reuse.
Measured context
The numbers, with their meaning intact.
- exchange systems
- 3
- repository stars
- 19
- repository forks
- 31
Project count reported in the preserved portfolio for the 2014–2016 period.
Snapshot reported by the previous portfolio; this public GitHub count may change over time.
Evidence source ↗ (opens in a new tab)Snapshot reported by the previous portfolio; this public GitHub count may change over time.
Evidence source ↗ (opens in a new tab)Product record
The working surface.
Screenshots from the product and project record. Open any frame for a closer view.
Build story
From signal to shipped system.
01 / Match
Build the market core
Order books and execution logic form the transactional center of each exchange surface.
02 / Settle
Connect currencies and payment rails
Wallets and payment integrations bridge cryptocurrency trading with the era's electronic-money systems.
03 / Operate
Give the system an accountable back office
User dashboards, administration, validation, and audit-oriented controls support day-to-day exchange operation.
Project links
Explore this project.
Open the live product, working demo, publication, or repository.