Selected Engineering Work

Products built around real infrastructure problems.

These projects demonstrate my work across blockchain infrastructure, custody, wallets, trading systems, transaction execution, real-time applications and end-to-end product delivery.

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Blockchain ecosystem

DENeon

Multi-product blockchain ecosystem with custody, DEX, wallets and GameFi.

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Trading platform

StockySpace

Trading product with portfolio, wallet and market execution workflows.

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Trading automation

ArbiNator

Multi-exchange cryptocurrency trading and automation infrastructure.

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Flagship ecosystem

DENeon

A connected blockchain ecosystem covering enterprise custody, wallet infrastructure, DEX functionality and a Telegram-based GameFi product.

Role

Founder & Lead Fullstack Blockchain Engineer

I designed and implemented the architecture, backend services, frontend applications, blockchain integrations and deployment infrastructure across the DENeon product suite.

✓ Product architecture and technical direction

✓ Backend, frontend and blockchain development

✓ Infrastructure, deployment and production support

✓ Product iteration based on real usage

Enterprise infrastructure B2B SaaS

DENeon Custody

Multi-chain custody and processing platform for wallets, transactions, approvals, blockchain scanners, webhooks and team-based workspace operations.

Custodial Wallets Non-Custodial Wallets Transactions Approvals Scanners Webhooks

Exchange product DEX

DENeon DEX

DEX and wallet product with token assets, dynamic pricing, swap-oriented workflows, real-time price updates and user-facing portfolio functionality.

Wallets Token Assets Dynamic Pricing Realtime Vue.js

Consumer product Telegram Mini App

DENeon GameFi

Telegram Mini App combining wallet functionality, blockchain onboarding, reward mechanics, games, referrals, advertising and real-time product events.

Telegram GameFi Wallet Rewards Ads WebSockets

Custody architecture

Unified multi-chain infrastructure

DENeon Custody was designed as a reusable B2B infrastructure layer instead of a blockchain-specific wallet implementation.

✓ Custodial and non-custodial wallet models

✓ Unified APIs across different blockchain networks

✓ Workspace isolation, API keys and permissions

✓ Asset and node configuration

✓ Scanners, webhooks and asynchronous events

Supported ecosystems

Blockchain-specific logic behind a unified API

Each network has different transaction models, signing requirements and confirmation behavior. The platform normalizes these differences into consistent product-level workflows.

Bitcoin Ethereum EVM Networks TRON TON Solana

✓ Account-based and UTXO transaction models

✓ RPC and explorer integrations

✓ Signing, broadcasting and confirmation tracking

Security workflows

Configurable multi-approval transaction execution.

Enterprise wallet operations require more than a simple transaction endpoint. Approval policies were designed as a first-class platform feature.

Approval Thresholds

Configure how many team members must approve a transaction before execution.

Distinct Approvers

Ensure approvals are provided by separate authorized users instead of repeated actions by one account.

Initiator Restrictions

Prevent the transaction creator from approving their own request when policy requires separation of duties.

Controlled Execution

Support automatic or explicitly authorized execution after all policy requirements are satisfied.

Advanced transaction execution

Generic serialized transaction endpoint

Designed a generic custody endpoint that accepts a client-built serialized blockchain transaction, validates the required signer, signs it with the custodial key and broadcasts it through the platform.

serialized.execute

POST /api/v1/transactions/serialized/execute

{
  "walletId": "custodial-wallet",
  "serializedTransaction": "base64...",
  "encoding": "base64"
}

Engineering value

Generic infrastructure, not product-specific code

The endpoint was designed to support advanced transaction packages without coupling custody infrastructure to a specific DEX, project or external integration.

✓ API key and workspace validation

✓ Custodial wallet and blockchain validation

✓ Required signer verification

✓ Signing and blockchain broadcasting

✓ Standard transaction events and scanner compatibility

Consumer Web3 product

DENeon Telegram GameFi

A user-facing product combining wallet infrastructure, games, rewards, referrals, advertising and real-time application flows.

Wallet Experience

Non-custodial wallet onboarding, encrypted local storage, balances and blockchain-oriented account flows.

Wallet Creation Encryption Balances

Game Mechanics

Shard Catcher, Boss Raids, attempts, cooldowns, reward limits and user progression mechanics.

Game State Cooldowns Rewards

Product Monetization

Rewarded ads, interstitial ads, provider availability, eligibility rules and backend-verified reward flows.

AdsGram Monetag Eligibility

Trading product

StockySpace

A fullstack trading platform that connects market data, asset mapping, portfolio management, corporate wallets and transaction execution.

Product interface

Simplified stock trading

Product-level trading workflows

StockySpace turns synthetic stock trading into a clean user flow for portfolio tracking, deposits, market orders and asset management.

✓ Real-time market prices and asset discovery

✓ Buy and sell synthetic stocks using stablecoins

✓ Portfolio, positions, history and custodial assets

✓ Execution orchestration through StockyEngine and custody

FastAPI Vue.js WebSockets PostgreSQL

Market Data

Price synchronization and real-time delivery from StockyEngine to the product frontend.

Corporate Wallets

Wallet registry for trading, treasury, settlement, liquidity and reserve purposes.

Buy Flow

Market buy workflows with spreads, review rules, positions, ledgers and transaction records.

Custody Connection

Execution integration with DENeon Custody for secure signing and blockchain submission.

Execution and pricing service

StockyEngine

ASP.NET Core service responsible for market prices, Solana assets, Jupiter quotes and serialized swap transaction packages.

Pricing Infrastructure

Built REST and real-time market interfaces with workspace isolation, API keys, asset permissions and configurable price adjustments.

✓ REST price endpoints

✓ SignalR market price updates

✓ Workspace and API key access control

✓ Raw, display and execution price snapshots

Jupiter Swap Integration

Integrated Jupiter quote and swap transaction creation so the engine can build a serialized Solana transaction package without owning the custodial key.

✓ Quote request and validation

✓ Serialized swap transaction generation

✓ Test and live mode compatibility

✓ Custody-based signing boundary

Architecture boundary

Execution without exposing private keys

StockyEngine builds the blockchain transaction. DENeon Custody validates, signs and broadcasts it. StockySpace manages the product workflow and user-visible state.

1 StockySpace creates a trade request

2 StockyEngine requests a Jupiter quote

3 StockyEngine builds serialized Solana transaction

4 DENeon Custody signs and broadcasts securely

Trading automation

ArbiNator

Cryptocurrency trading infrastructure focused on multi-exchange market data, configurable strategies, execution flows and risk management.

Market Data

Multi-Exchange Collection

Unified collection and normalization of futures market data across multiple cryptocurrency exchanges.

CCXT WebSockets Order Books Trades

Strategy

Signal Confirmation

Configurable confirmation rules based on multiple exchange snapshots, consensus and market direction.

Consensus Long / Short Thresholds Filters

Risk Controls

Controlled Execution

Position limits, leverage, stop logic, cooldowns, trade feedback and configurable execution conditions.

Leverage TP / SL Cooldown Paper Trading

Engineering focus

The project focuses on the infrastructure required to test, compare and execute trading strategies safely before enabling real-money automation.

Python FastAPI CCXT Redis Vue.js Futures Risk Management

Shared engineering principles

What connects these projects.

Clear Architecture

Separate product concerns, execution logic, custody, integrations and infrastructure responsibilities.

Secure Boundaries

Keep sensitive signing, permissions and financial operations behind explicit validation layers.

Reliable State

Treat confirmations, failures, retries, webhooks and transaction status as first-class product concerns.

Product Delivery

Build the complete user and operational flow instead of stopping at an isolated backend integration.

Work together

Building a wallet, trading platform or blockchain infrastructure product?

I am open to Senior, Lead, Architect and Founding Engineer opportunities, as well as selected product and integration work.

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