Имею опыт коммерческой разработки 4 года + некоммерческой около 3лет.

Miner implementation for pool (OpenCl, C++17);
- Full support and development from "scratch" of the https://github.com/Nintondo/bellscoinV3 https://nintondo.io coin, transition to the latest version of Bitcoin, transfer of the difficulty recalculation algorithm from Zсash, implementation of auxpov and preparation for production and do builds for Mac, Windows and Linux(guix).
- Work with coins patching, fix bugs, fix builds, add some features for pool: Nexa, Neoxa, NeurAI, Clore, Ariel, Tidecoin, Bitcoin;
- Creating C++ libs, for pool on Rust for block verifying.
- Transferring a Litecoin node from the 18th core to the 25.x Bitcoin core.
Test coverage of new functionality, preparing and support for release, manual testing.

- Development of a DDoS detector
- Leak detection
- Development of the reward system
- Development of a "credit system"
- Writing a system of events, based on templates, subsequently based on signals
- Development of a system of polls and voting
- Development of a custom transaction
- Implementation of reading orders to different depths using the binance API
- Improvement and processing of existing functionality: p2p\rpc (UDP, TCP), mempool, introduction of new transactions, stabilization, bug detection, benchmarks.
All written functionality was covered by unit tests(catch, gtests) and regression tests(Python or Bash scripts).
Also: code review, dcumentation, code coverage (gcovr), text communication with the customer, hotfixes, deployment, cross-platform build, CI, docker.