Aspiring to contribute to a protocol with a $1,000,000,000 Total Value Locked 💎

• 🔗 Deep expertise in smart contracts and Bitcoin development
• 🎭 Veteran of the "colored coins" and "masternode" revolution
• 🦠 In the field even before The Pandemic

1. 🏛️ Bitcoin Era

   • Active participant in Bitcoin forums
   • 💻 Contributed C++/QT expertise
   • 🛡️ Assisted teams with masternodes and privacy coins

2. 🌈 Ethereum Transition

   • 🍣 Joined the EVM ecosystem during SUSHI DEX rise
   • 🌾 Supported teams in the farming era

3. 🔮 Current Focus

   • 💹 Specializing in decentralized finance (DeFi)
   • 🚀 Deploying cutting-edge protocols on EVM chains
   • 🌌 Expertise in Cosmos/EVM protocols

• 🧠 Merging AI and DeFi
• 🔬 Developed $NAAI protocol
  • Created backend for "AI auditing contract" solution
  • Implemented anti-snipe bot features in smart contracts

• ✅ Flawless track record: No hacked protocols
• 🔍 Meticulous Solidity coding practices
• 🧪 Ensures full test coverage before deployment

• 🖼️ Ordinals & NFTs: Pioneered implementation of Bitcoin Ordinals protocol
  • Developed custom solutions for minting and trading Bitcoin NFTs
  • Create efficient scripts for Ordinal inscriptions
• 🔍 Transaction Monitoring: Built robust Bitcoin transaction monitoring systems
  • Implemented real-time mempool analysis for high-frequency trading bots
  • Developed custom APIs for blockchain explorers with advanced filtering capabilities
• 🧮 UTXO Management: Optimized UTXO selection algorithms for large-scale Bitcoin operations
  • Implemented scripts for UTXO decoding and analysis for payment detection.
  • Implemented scripts for payment confirmation from 1 to 3 confirmations.

• 📊 AMM Innovations:
  • Implemented novel bonding curve algorithms for improved liquidity provision
  • First on implementing bonding curve algorithms for evm tokens with auto-deployment, like PupFun on EVM/Cosmos.
  • Developed hybrid AMM-order book systems for enhanced capital efficiency for arb bots to trade/arb on multiple chains using AI.
• 🏦 Yield Optimization:
  • Created auto-compounding strategies with gas-efficient re-balancing mechanisms
  • Implemented flash loan aggregators for arbitrage and liquidation protection
• 🔐 Governance Solutions:
  • Developed quadratic voting systems for fair decision-making in DAOs
  • Implemented time-locked, multi-sig treasury management contracts
• 🌟 Pioneering Staking on Harmony:
  • Developed the first contract for staking assets on Harmony network
  • Implemented innovative reward sharing and auto-reinvestment mechanisms
  • Optimized gas efficiency for frequent reward distributions
  • Integrated fail-safe measures to ensure users fund security during network instabilities

• 🔒 Security-First Approach:
  • Implemented advanced anti-bot measures in token contracts.
  • Developed custom proxy patterns for protocol-specific requirements.
• 🌉 Cross-Chain Solutions:
  • Engineered atomic swap protocols for trust-less cross-chain transactions using L0.
  • Implemented state-of-the-art bridge contracts for seamless asset transfers for ERC20 and ERC721.
• 🤖 AI Integration:
  • Pioneered AI-driven smart contract auditing tools, was one of the first to use it on Bitcoin.
  • Developed machine learning models for predicting gas prices and optimizing transaction timing

• Developed smart contracts for DeFi protocols, DEXs, betting platforms, and decentralized exchanges

• Implemented complex interactions like flash loans and atomic swaps

• Extensive experience with proxy deployments and upgradeable contracts

• Implemented various proxy patterns including UUPS, Transparent, and Beacon proxies

• Developed and audited proxy contracts for major DeFi protocols

• Optimized gas costs for proxy implementations and upgrades, like, using beacons on gauges/pools deployments of factories.

• Managed complex upgrade processes for live protocols with minimal downtime, as it needs to be done with very-very care.

• Created custom proxy patterns for specific protocol requirements, such as developing a custom upgradeable beacon for Equilibre Finance and other protocols

• Created presale, airdrop, and farming contracts with advanced features, as demonstrated in multiple repositories on my GitHub profile, such as:

  • Sample public contracts in the SolidityContracts repository
  • Token-related contracts in repositories like xex-contracts and token-deposit
  • Specialized contracts like the timelock-multsig combination, as one of the biggest issues of our time is hack of protocols with multiple multisigs.

• Designed NFT auction and raffle systems, as demonstrated in various repositories on my GitHub profile:

  • Implemented smart contracts for NFT minting, trading, and auctions in projects like nft-auction
  • Developed raffle systems with fair distribution mechanisms, such as nft-raffle-contract
  • Created NFT-based systems for gaming and betting, as seen in nft-game-engine
  • Implemented advanced features like preventing NFT reveals before minting in nft-prevent-reveal-before-mint
  • Developed NFT-related projects with various functionalities, such as zogue-collection and mint-o-taurs

• Developed DAO and treasury management contracts, as demonstrated in several repositories:

  • dao-contracts-dev: DAO treasure contracts
  • dao-team-presale: Team presale contracts and test-cases for DAO
  • farm-with-lock: Farming contract with a lock mechanism, often used in DAO ecosystems

• Implemented various DAO-related functionalities, as demonstrated in several repositories:

  • Voting mechanisms and governance systems in dao-contracts-dev
  • Token distribution systems, including team presales in dao-team-presale
  • Treasury management and allocation strategies
  • Governance proposal creation and execution processes
  • Farming contracts with lock mechanisms for token incentives in farm-with-lock

• Applied security best practices:

  • Implemented reentrancy guards and access control mechanisms
  • Utilized OpenZeppelin libraries for standardized and audited security features
  • Developed comprehensive test suites for smart contracts, as demonstrated in repositories like:
    • dao-team-presale: Includes test cases for team presale contracts
    • farm-with-lock: Features tests for farming contracts with lock mechanisms
  • Implemented advanced security measures such as:
    • Pause functionality for emergency situations
    • Time-locked operations for critical functions
    • Multi-signature requirements for high-value transactions
  • Conducted thorough audits and code reviews, utilizing a combination of AI-assisted tools and manual expertise:
    • Leveraged the audit_gpt repository for AI-powered smart contract analysis
    • Employed Google Gemini for advanced code review and potential vulnerability detection
    • Use Aider for collaborative code review sessions and automated test case generation
    • Complemented AI-assisted reviews with manual expert analysis to ensure comprehensive security assessments
  • Implemented advanced anti-bot and anti-MEV measures in token contracts, as demonstrated in projects like $NAAI protocol:
    • Used dynamic buy and sell limits to prevent large-scale sniping and dumping
    • Implemented cooldown periods between transactions to mitigate rapid trading by bots
    • Used blacklisting functionality to restrict malicious actors
    • Integrated anti-whale mechanisms to prevent market manipulation by large holders
    • Implemented gas price limits to reduce the effectiveness of front-running attacks
    • Used transfer delays for large transactions to give legitimate traders a fair chance
  • Designed secure proxy patterns for upgradeable contracts, demonstrated in various DeFi protocol implementations:
    • Deployed many Transparent and Beacon proxies for major protocols
    • Implemented UUPS (Universal Upgradeable Proxy Standard) for gas-efficient upgrades
    • Create custom proxy patterns for specific protocol requirements, such as a upgradeable beacon for Equilibre Finance
    • Optimized gas costs for proxy implementations using techniques like minimal proxies (EIP-1167)
    • Managed complex upgrade processes for live protocols with minimal downtime
    • Implemented multi-step upgrade patterns for critical protocol changes, like creating scripts to safe upgrade of gauges/pools of factories.
    • Created very complex scripts for proxy deployment and explorer proxy verification on various chains.
  • Conducted thorough unit and integration testing:
    • Developed comprehensive test suites using Hardhat and Forge, ensuring full coverage of smart contracts, as demonstrated in repositories like dao-team-presale and farm-with-lock
    • Implemented advanced testing scenarios with forked mainnet environments to simulate real-world conditions, particularly useful for DeFi projects like xex-contracts
    • Utilized Tenderly for detailed transaction tracing and debugging in complex test cases, enhancing the robustness of contracts such as those in nft-auction
    • Achieved consistently high test coverage rates, often exceeding 95% for critical contract functions, as seen in various DAO and NFT projects
    • Created parameterized tests to cover a wide range of input scenarios efficiently, particularly useful in projects like nft-raffle-contract
    • Implemented fuzz testing to identify edge cases and potential vulnerabilities, crucial for security-critical contracts like timelock-multsig
    • Designed integration tests to verify contract interactions within the broader ecosystem, as demonstrated in complex projects like sushiswapV1
    • Utilized time-manipulation techniques in Hardhat to test time-dependent contract logic, essential for projects with vesting or lock periods like farm-with-lock
    • Implemented gas usage tracking and optimization based on test results, crucial for efficient contract deployment and execution across various projects as some contracts may not deploy if gas is not optimized.
  • Optimized for gas efficiency and scalability:
    • most of the optimizations are in private contracts that I can share some if needed.
    • Use storage packing to reduce slot usage where applicable
    • Applied unchecked blocks for safe arithmetic operations
    • Implemented bit manipulation for efficient flag storage
    • Use inline assembly for specific optimizations when necessary
    • Employed proxy patterns to minimize deployment costs
    • Utilized calldata for read-only function parameters
    • Optimized loops by caching lengths and using pre-increment
    • Leveraged short-circuiting in conditional statements

• Stayed current with the latest Solidity features and best practices

  • I tend to use the latest version of Solidity, as I like to use the latest features and best practices.
  • Using the latest versions with good test-cases is very important to ensure the security of the contracts and to demonstrate good practices used in the protocol.

🌾 Yield Farming & Liquidity Mining

• Engineered high-performance protocols for maximizing DeFi returns

🎨 NFT Ecosystems

• Developed cutting-edge marketplaces, minting platforms, and blockchain-based gaming solutions

💱 Decentralized Exchanges (DEX)

• Contributed to major projects including SushiSwap, enhancing liquidity and trading efficiency

💎 Advanced ERC20 Tokens

• Implemented tokens with sophisticated features, pushing the boundaries of tokenomics

🛡️ Anti-Sniper & Anti-MEV Systems

• Designed robust protection mechanisms to ensure fair and secure trading environments

🐕 Innovative Memecoin Smart Contracts

• Created contracts with unique tokenomics, blending fun with serious DeFi functionality

🎲 Decentralized Betting Platforms

• Built secure and transparent betting systems on blockchain technology

⚡ Smart Contract Optimization

• Specialized in refactoring and optimizing contracts for enhanced performance and reduced gas costs

• Bitcoin Chain Monitoring: Developed systems to detect and decode transactions for:
  • Payment tracking
  • Ordinals transactions
  • NFT minting on Bitcoin
• Transaction Analysis: Created tools for in-depth examination of Bitcoin transactions
• Ordinals Protocol: Implemented support for tracking and decoding Ordinals inscriptions
• NFT Minting Detection: Developed algorithms to identify and analyze NFT minting activities on Bitcoin
• Real-time Blockchain Indexing: Built efficient indexing systems for quick transaction lookups

• Solidity: Expert-level smart contract development both for EVM and Cosmos/EVM protocols that has some quirks that needs to be handled.
• TypeScript, JavaScript, Node.js: Full-stack Web3 development for backend and cloud services, most oriented for blockchain explorers and bots and AI services.
• React: Frontend development for DApps, but not as much as I used to do, as I prefer to use bootstrap+jquery for my contract/ui tools.
• C/C++: Extensive experience in blockchain core development and VoIP services as I worked many years in telecom background developing VoIP systems.
• Golang/Rust: Prefer to avoid it and use C++/Qt for most of my projects.

• Developed an AI-powered auditing system for smart contract analysis
• Created tools for fine-tuning GPT models for blockchain-specific tasks, most of the time using RAG from database data.
• Implemented RAG-based document chatting systems for blockchain information, like, informing use about contract issues using api like fuzzers, goplus, slither and other tools.
• Integrated AI capabilities with DeFi protocols for enhanced security and user experience, specially for auditing contracts.

• Designed and implemented VoIP protocols and architectures for large scale VoIP systems for call center and fed-gov telecom projects.
• Developed Softphone/VoIP applications using C/C++/Qt for various telecom projects.
• Optimized VoIP performance and scalability for telecom projects to handle large scale state calling queues for public safety answering points (P3).
• Troubleshot and resolved VoIP issues for telecom projects, specially in 3rd party integrations with VoIP vendors, enterprises and other telecom projects that needed state/wan/lan/internet connections.
• Worked with VoIP hardware and software, like, Cisco, Avaya, Mitel, etc. for large-scale telecom projects and fed-gov projects.
• Integrated VoIP systems with other telecommunications systems, like, CRM, billing, etc., specially to handle calls/queues/reports/analytics from CDR raw data with other tools like Microsoft Excel and Power BI.

🏗 VoIP Projects:

• VoIP gateway for PSTN/E1/IP to VoIP network connectivity
• VoIP softphone application for mobile devices
• Softphone application for desktops in C/pjsip/C++/Qt
• Large governamental VoIP call center solution with call queuing, reporting, and analytics
• VoIP system integration with CRM system with large governamental public services numbers with like 20.000 calls per day.

On cloud services, I worked with various cloud providers to deploy telegram/discord bot and AI services and also to pre/pos process VoIP data, like calls audio conversion and transcription.

• Amazon ECS: Managed container orchestration, specially for deploying my bots and AI services for large scale telegram/discord/telegram communities.
• AWS CodeCommit and CodePipeline: Git repositories and CI/CD automation.
• AWS Lambda: Used for deploying my bots and AI services for large scale telegram/discord/telegram communities.
• GCP Gemini: Used gemini for large scale AI processing of audio and other data for BI systems.

• DigitalOcean and Spaces: normally I used it for some projects when asked by team, but not as much as AWS.
• Heroku Container Registry, Pipelines, and Review Apps: normally I used it for some projects when asked by team, but not as much as AWS.

Experience with various blockchain protocols:

• Layer 0: Deployed both ERC20 and ERC721 bridgeable tokens for the xexlabs.com protocol, demonstrating proficiency in cross-chain interoperability and token standards implementation.
• Arbitrum: Worked on layer 2 scaling solutions, also using L0 to bridge tokens to Arbitrum.
• Other protocols: Familiar with a range of blockchain ecosystems and their unique features, as I worked for various teams deploying on Cosmos/EVM layers, there is very very specific quirks that needs to be handled during the deployment process.

• Actively maintain 67 public repositories on GitHub as an example for anyone to learn and use them, I keep them there just to help the community and to show my skills and knowledge.
• Contribute to major DeFi projects like SushiSwap and Abracadabra Money, Camelot, KOI, and various other small protocols that I love to help, special on meme coins sector.
• Develop and share utilities for blockchain interactions and Web3 development, like bots, explorers, etc.
• Also, starting to contribute with AI NPM ecosystem.

• AI-Powered Bots and DeFi Integration

  • Developed an AI-powered auditing system for the $NAAI protocol, integrating AI capabilities with smart contract analysis.
  • Created a sophisticated backend system to support AI-driven contract auditing, enhancing security in DeFi projects.
  • Implemented advanced anti-snipe bot features in smart contracts, leveraging AI to detect and prevent malicious activities.
  • Working on spare time:
    • a gc cli tool to help with git workflow and to make it easier to contribute to open source projects.
    • a hn cli tool to help with Hacker News that I use daily to keep up with the latest news in the tech world in a summarized way, telling me about author/site/points/comments and all the info in a summarized way to avoid scam and fake news.
    • a aic ai-aider tool to help with AI coding, like, code review, test case generation, etc. Where I have a prompt to instruct aider to do things to me, specially passing the entire relevant code context to be more efficient.
    • a fs-ai tool to help with file search in a summarized way, like, passing the dir, it gives me the summary of the files and sub dirs, and then I can choose to read more or not. And allow me to organize and index my files and folders.
    • a ai-yt tool to help with YouTube, like, passing the url, it gives me the summary of the video, and then I can choose what language I want it to convert the audio, singing my author voice to the video (pt-br), so I can listen to the video in the car, etc.
    • a ai-podcast tool to help with YouTube videos, like, passing the url, it gives me the summary of the video, and then I can choose what language I want it to convert the audio, singing personalized pt-br voice to the video (pt-br), so I can listen to the video in the car, etc., it auto-add to my podcast queue to I can listen while I do my tasks.
    • a gfs a Google Chrome extension that auto-check all my links in Google search results, and tell me if it is a scam or not, and give me the summary of the page, and then I can choose to open the page or not.
    • a ai-v, an ai-powered translation that perfectly translates my videos with voice cloning, so I can watch any video in any language as if it was in my language (pt-br), and the voice is in portuguese (br) using artist tone.
    • a ai-books-tts, an ai-powered text to speech that perfectly converts any text to speech in any language with my own voice, I use it to convert papers/books to audiobooks and listen while I do my tasks/waking up.

• Designed and built custom Telegram bots for crypto communities.
• Implemented bots providing real-time market data, wallet tracking, and automated support.
• Specially designed largue scale community bots with a queueing system to process large scale of prompts, like, airdrops, airdrop claim, voting, etc.
• I have various samples to demonstrate my skills in telegram bots, like, airdrop bots, voting bots, etc.

• Developed Discord bots for DeFi projects.
• Created bots facilitating user engagement, token distribution, and community management.
• I have various samples to demonstrate my skills in discord bots, like, airdrop bots, voting bots, etc.

• Integrated AI-powered natural language processing to enhance bot interactions, specially using zod and gpt-4o to create schemas and validate data.
• Provided more intuitive user experiences through AI capabilities, using RAG to answer questions and to provide more accurate and up-to-date information.
• Developed very personalized AI bots that can't be easily detected by users, specially for chat'ing when it'd need to know user preferences and to act as a good friend.

• Created bots capable of executing on-chain transactions based on user commands, specially generating user wallet addresses and private keys to interact with the blockchain.
• Both on discord/tg, allowed users to verify and claim airdrops, voting, etc. via bots.

• Implemented solutions that synchronized data and functionality between Telegram, Discord, and web interfaces, specially for community bots that need to be available 24/7 on multiple platforms.
• Integrated blockchain explorer and other APIs to allow users to check their balance, transactions, etc, directly from the bot interface.

• Developed secure authentication systems for bots.
• Normally I use aws secure vault to store my bot tokens and keys, and to avoid any leaks.
• Also, for local bots initialization, I tend to use local vaults npm modules to store my keys and tokens, and to avoid any leaks, as I can use dotenv, I avoid it on VPS/cloud services.
• Ensured user data protection and prevented unauthorized access to sensitive functions by encrypting data at rest and implementing strict access controls using local vaults with PIN codes to avoid exploitation via looking for .env files.

Frontend Developer | Aug 2021 - Present Blockchain Developer | Apr 2022 - Present

• Contributed to the development of core smart contracts for Èquilibre Finance's decentralized exchange (DEX) V2/V3 Uniswap-like platform.
• Implemented and optimized key features including:
  • Concentrated liquidity pools for efficient capital utilization
  • Integration of V2/V3 pools-gauge contracts.
  • Adaptive fee mechanism to dynamically adjust trading fees based on market conditions
  • Voting and governance contracts for decentralized decision-making
  • Use of beacon proxy's for pools/gauges.
  • Refactor of immutable contracts to upgradeable contracts, using a transparent proxy pattern.
• Developed and maintained subgraphs for efficient data indexing and querying of on-chain events. Specially for pools/gauges api stats.
• Collaborated on the creation of a custom oracle solution for reliable token pricing on the Kava blockchain.
• Created airdrop functionality and distribution mechanisms.
• Implementation of veTokenomics, including contracts for token locking and voting escrow.
• Worked on cross-chain bridging solutions to enhance interoperability with other blockchain networks.
• Participated in code reviews, testing, and auditing processes to ensure contract security and reliability.
• Assisted in the development of frontend interfaces and API services to interact with the smart contracts, providing cache and api endpoints to interact with the blockchain for fast ui response.

• Contributed to the development of core smart contracts for Keller Finance's decentralized exchange (DEX) V2/V3 Uniswap-like platform.
• Implemented and optimized key features including:
  • Concentrated liquidity pools for efficient capital utilization
  • Integration of V2/V3 pools-gauge contracts.
  • Adaptive fee mechanism to dynamically adjust trading fees based on market conditions
  • Voting and governance contracts for decentralized decision-making
  • Use of beacon proxy's for pools/gauges.
  • Refactor of immutable contracts to upgradeable contracts, using a transparent proxy pattern.
• Developed and maintained subgraphs for efficient data indexing and querying of on-chain events. Specially for pools/gauges api stats.
• Collaborated on the creation of a custom oracle solution for reliable token pricing on the Kava blockchain.
• Created airdrop functionality and distribution mechanisms.
• Implementation of veTokenomics, including contracts for token locking and voting escrow.
• Worked on cross-chain bridging solutions to enhance interoperability with other blockchain networks.
• Participated in code reviews, testing, and auditing processes to ensure contract security and reliability.
• Assisted in the development of frontend interfaces and API services to interact with the smart contracts, providing cache and api endpoints to interact with the blockchain for fast ui response.