💼 Senior Android Engineer | Blockchain & Web3 Enthusiast | Smart Contract Auditor in Progress

I’m a senior Android developer with over 10 years of experience building, scaling, and maintaining applications in the financial and retail sectors.
In recent years, I’ve been deeply involved in blockchain and Web3 development, transitioning from mobile engineering into smart-contract auditing, Solidity development, and decentralized architecture design.

My goal is to bridge the reliability of traditional software engineering with the transparency and innovation of blockchain — developing secure, scalable, and real-world Web3 solutions.

• 📱 Android Specialist — strong background in Kotlin, Jetpack Compose, and mobile architecture (MVVM, Clean Architecture).
• 🔍 Blockchain Security Enthusiast — auditing Solidity contracts, identifying vulnerabilities, and building reproducible PoCs using Foundry.
• 🧠 Smart Contract Design — developing and improving EVM-based contracts with a focus on clarity, gas efficiency, and security.
• ⚙️ Backend Development — building secure APIs with NestJS and middleware integrations (Stripe, authentication, request validation).
• 🔒 Security-first Mindset — experience in identifying logical and design flaws such as underflows, low-entropy randomness, and unsafe transfer patterns.

• Finance and Retail Apps — Led Android development for production-grade apps handling millions of users.
• UI Modernization — Migrated legacy apps to Jetpack Compose and Kotlin coroutines for performance and maintainability.

• GuessTheRandomNumberChallenge — Exploit PoC proving storage-read vulnerability (public access to private variable).
• RetirementFundChallenge — Logical underflow exploit & secure patch proposal with pull-pattern + ReentrancyGuard.
• Vaquinha (Crowdfund) — Modular crowdfunding smart contracts with donation tracking and refund logic.

• Active exploration of account abstraction, MPC wallets, and gas relaying mechanisms.

• 🧾 Audit Reports: Solidity contract audits with severity classification and remediations.
• ⚗️ Foundry PoCs: Reproducible exploit tests for auditing and educational purposes.
• 📱 Android Projects: Clean-architecture mobile apps and Kotlin-based UI demos.

“Security and usability are two sides of the same coin — the best systems balance both.”

• Build for clarity and maintainability first; optimize later.
• Treat security as a design requirement, not a post-audit fix.
• Always test exploits — every bug you can reproduce, you can prevent.
• Merge the discipline of traditional engineering with the creativity of decentralized systems.

• Expanding my role from Android Engineer to Blockchain Developer and Smart Contract Auditor.
• Learning advanced auditing techniques (Slither, Mythril, Echidna).
• Exploring tokenization as a bridge between traditional assets and decentralized finance.
• Constantly improving my English and communication for global collaboration.