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@RealTimeChatApplication @coding-challengers @cycle-sync-ai @HCISS-LLC-BSECAEnergy

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marksantiago290/README.md

Mark Santiago's Dev Card

Your behavior, not your idea will change the world.

A critical and forward thinking Software Engineer

A results-driven Senior Software Engineer with 7+ years of experience in designing, building, and deploying high-impact full-stack web and mobile applications, blockchain decentralized applications, and AI-powered SaaS platforms. Demonstrates deep expertise across front-end, back-end, mobile, and blockchain ecosystems, with a proven track record of delivering scalable, secure, and user-centric solutions.

Core Competencies:

  • Frontend & Web Applications: React, Next.js, Redux, Vue.js, Tailwind CSS, Java
  • Backend & API Development: Node.js, Nest.js, MongoDB, PostgreSQL, Python, FastAPI, Firebase, AWS
  • Mobile Development: React Native, Flutter, Ionic Capacitor
  • DeFi & Blockchain: Smart contract design and optimization, cross-chain interoperability, Solidity, Hardhat, Rust, Anchor
  • AI & Automation: AI agents and workflows (Python, LangChain, LangGraph, RAG, MCP), integration with communication platforms (Twilio, Vapi, ElevenLabs, OpenAI)

Notable Focus Areas:

  • End-to-end full-stack development and system design
  • DeFi protocol architectures, smart contract optimization, and cross-chain solutions
  • AI-driven platforms, including agent development, retrieval-augmented generation (RAG), and API integrations
  • Cloud-native infrastructure, CI/CD pipelines, and DevOps practices

Skills and Tools:

Certificates

Frontend_React
Frontend (React)
HackerRank
Software Engineer
Software Engineer
HackerRank
Problem Solving
Problem Solving
HackerRank
Cert 4
Blockchain Fundamentals
Chainlink
Cert 6
Artificial Intelligence Fundamentals
IBM SkillsBuild
Cert 5
Node.js
HackerRank
Cert 4
Javascript
HackerRank
Cert 6
Python
HackerRank
Cert 6
SQL
HackerRank

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  1. ERC20-Token-Presale-Smart-Contract ERC20-Token-Presale-Smart-Contract Public

    ERC20 Token Presale Smart Contract. It is useful for starting ICO on EVM compatible chains

    Solidity 113 43

  2. NFT-Marketplace NFT-Marketplace Public

    A NFT Marketplace powered by Generative AI for creating NFT assets using Stable Diffusion, DALL-E and Midjourney.

    TypeScript 48 15

  3. Ethereum-MEV-BOT Ethereum-MEV-BOT Public

    A sophisticated Maximal Extractable Value (MEV) bot designed for the Binance Smart Chain (BSC) and Ethereum (ETH) networks.

    Rust 66 34

  4. Arbitrum-Smart-Bridge-with-ARK Arbitrum-Smart-Bridge-with-ARK Public

    A bridge implementation that enables asset transfers between Arbitrum and the ARK V3 based custom DPoS blockchain - HMESH

    TypeScript 47 12

  5. Customer_support_agent Customer_support_agent Public

    Customer support AI Agent

    TypeScript 28 2

  6. RealTimeChatApplication/Real_time_Chat_MERN RealTimeChatApplication/Real_time_Chat_MERN Public

    Real-time chat application with advanced functionality built using the MERN stack. It provides users with a seamless and interactive chatting experience.

    JavaScript 50 12