vavileng

Liquidmining 
Description: selling cloud mining equipment in the form of NFT. 10-level referral system. Ability to buy for conditional currency on the site (points). Auto-subscription to purchase power. Achievements and goals: 
- Created architecture of 10+ contracts based on product specifications. 
- Implemented smart contracts in Tron network for marketplace (single purchase, multi-purchase, pre-sale purchase using Merkle tree, purchase for points). 
- Auto-subscription for power purchases. 
- Referral tree in 10 levels with automatic calculation of group value and several pools of rewards, depending on the volume of purchases by the group. 
- Payment-master for purchases in EVM-networks. 
- Pool contract to allocate funds for early investors. 
- Ticket purchase to attend offline events. 
- Realization of gambling direction: opening cases with a chance of various rewards. 
- Collections are in the top 10 in terms of initial sales in the entire Tron blockchain. Stack: Solidity, Tron, EVM, TRC721, TRC20, UUPSUpgradeable, TRC948, ECDSA, Access Control, Merkle Tree, Hardhat, Foundry, Slither, TypeScript, Python


 Blockchain sports Description: provides a one-stop platform for athletes, bettors, organizations and fans who have an interest in sports as an entertainment and investment opportunity Achievements and goals: 
- Creation of nft marketplace, profit revenues with nft liquidity pool. 
- Deployment of a full-fledged basic infrastructure in blockchain based on substrate: steaking, DEX, bridge Stack: Solidity, ERC1155, ERC721, ERC20, ERC4337, Permit, LayerZero, Hyperlane, Tron, Uniswap, Hardhat, Foundry, Slither, TypeScript


 Human Care Foundation Description: it is a philanthropic ecosystem that includes a range of projects. The donation and on-chain voting mechanics are embodied within it and open to the community. Each project has an individual mission and is represented by its own token built on Polygon. Their main functions are voting, staking, and lifetime staking. Achievements and goals: 
- 3 main platform tokens traded on top 20 exchanges. 
- Steaking for users and ambassadors; lifetime steaking. Stack: Solidity, Polygon, ERC20, Hardhat, Foundry, Slither, TypeScript,


 Limitless
 Description: A platform for selling tickets to offline events. Achievements and goals: 
- Creation of smart contracts for purchasing tickets for offline events. Generation of unique tickets for each user. 
- Over 20000 tickets were sold in one year. The biggest event in Dubai at Coca-cola arena was attended by 10000 people. Stack: Solidity, Tron, TRC721, UUPSUpgradeable, Hardhat, TypeScript

Evennods
 Description: betting on sporting events on Polygon, Etherium, Binance Smart Chain networks. Achievements and goals: 
- Implementation of merchant service to buy currency internally using Stablecoins, native currency on 3 EVM networks. 
- Development of architecture with consideration of verification of incoming funds through AML. 
- Distribution of funds in percentage for service owners. 
- Creation of pools for incoming different currencies. Stack: Solidity, Polygon, Etherium, BSC, AML, ECDSA, ERC20, Pausable, AccessControl, Hardhat, TypeScript NodusVPN
 Description: VPN-service, which provides an opportunity to buy different types of traffic packages. Own token for payment and all necessary infrastructure for tokenomics. Achievements and goals: 
- Token smart contracts; public/private/seed-sale with different vesting conditions and price formation; vesting contract for token distribution among partners; staking; blacklist; DAO; 
- Smart contract for buying traffic packages. Stack: Solidity, Polygon, ERC20, ERC20Burnable, MerkleRoot, Ownable, Pausable, Hardhat, TypeScript, Waffle, Chai GreekKeepers
 Description: casino with 7+ onchain games on smart contracts on Polygon, BSC networks. Achievements and goals: 
- Implemented multiple games using random numbers from chainlink, Among the games: sapper, video poker, eagle-slash, plinko, rock-paper-scissors. 
- Separate contract for user payouts. 
- Management of all development departments, successful defense with presentation to investors. Stack: Solidity, BSC, ERC20, Chainlink, ECDSA, Assembly, Hardhat, Slither, TypeScript

Creation of a large number of ERC20, ERC721 tokens with various additional functionality: honeypot, sell-limit, buy/sell fee, hidden mint, etc. Stack: Solidity, EVM, Tron, ZkEra, opBNB, Uniswap, Pancakeswap, openzeppelin, TypeScript, hardhat, foundry, waffle