Profile
VladimirBaldetskiy
Average Review
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28
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Kotlin
.Net
Specialization
Blockchain & Backend Developer | Solidity, Python, C#
Hourly rate
$30/hr
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BNB
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MATIC
SLP
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SHIB
USDT
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USDC
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CGU
About me
Formely Top Rated Upwork user. Now my main interest is blockchain/crypto
https://www.upwork.com/freelancers/~019c3c5c0478d25154?viewMode=1
21 year of experience in software development
on Upwork since 2012 with 82 completed projects
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ERC-20 Control Room — Solidity Demo
Demonstration of a capped ERC-20 token with minting roles, transfers and receipt history. Solidity + OpenZeppelin contracts, JavaScript backend and a local Ganache EVM. Tests cover authorization, supply limits and transfers. Source, setup instructions, tests and screenshots: https://github.com/pepelaz1/erc20-control-room . Runs locally with disposable test accounts; no mainnet deployment or independent audit is claimed.
Staking Reward Lab — Solidity Demo
Demonstration of funded staking rewards with separate stake/reward tokens, multi-user accounting, claiming and principal withdrawals. Solidity contracts run on a real local EVM. Tests exercise proportional rewards, replayed claims, permissions and balance conservation. Code and setup: https://github.com/pepelaz1/staking-reward-lab . Local portfolio demo, not an audited live staking service.
CSV and Excel Import Desk — Python Demo
Local dashboard for importing CSV and Excel data with validation, error reporting, duplicate protection and SQLite persistence. Demonstrates a practical data-onboarding workflow. Includes runnable source, behavior tests and setup instructions: https://github.com/pepelaz1/batch-import-desk . Portfolio demonstration; deployment and production authentication are separate.
Document Answer Desk — Document QA Demo
Document-grounded Q&A with text/PDF ingestion and cited passages. Provides a retrieval workflow with optional local Ollama generation. Includes a working dashboard, tests and clear setup instructions: https://github.com/pepelaz1/document-answer-desk . Local portfolio demonstration; generated answers require source review and production access controls are separate.
Telegram Signal Desk — Bot Dashboard Demo
Python dashboard demonstrating Telegram command handling, subscriptions and a persistent delivery outbox. Includes a command simulator and documented configuration for bot delivery, source and tests: https://github.com/pepelaz1/telegram-signal-desk . Screenshot shows the local simulator; no live trading or forecasting performance is claimed.
Order Document Desk — Orders and PDF Demo
Python/SQLite order workflow with validated line items, status transitions, a durable PDF queue and downloadable summaries. Includes a worker, retry handling, tests and a generated sample document: https://github.com/pepelaz1/order-document-desk . Local portfolio demonstration using sample orders, not a deployed accounting or invoicing service.

