High-Velocity Bug Triaging • TDD & 100% Green CI • Rust & Soroban Contracts • TypeScript & Next.js Systems
I am an Open-Source Issue Resolver & Bug Fixer with over 9 years in software engineering. I specialize in diagnosing, isolating, and writing clean, minimal, zero-regression patches for complex issues in large-scale brownfield repositories and Web3 ecosystems.
Whether tracking down elusive race conditions in distributed systems, fixing compiler borrow-checkers in Rust/Soroban smart contracts, eliminating layout shifts in React/Next.js, or writing comprehensive E2E test suites with Playwright, my patches are built to merge smoothly without breaking maintainer conventions.
- 🔍 Root-Cause Analysis: Deep context code ingestion (1M+ tokens) to isolate regressions and invariants within minutes.
- 🧪 Strict TDD Methodology: Every fix starts with a failing regression test to prove the bug, and ends with 100% green tests on real CI environments.
- 🛡️ Chaos Fuzzing & Red-Team Audit: Patches are stress-tested against 25+ synthetic edge-cases and audited on 5 security axes before submitting PRs.
- ⚡ Ultra-Fast Turnaround: Instant resolution and active communication on review feedback within 3 to 15 minutes.
- 📍 Location: Vietnam 🇻🇳 (Collaborating with global maintainers & Web3 protocols)
| Issue Triaging & AI Systems |
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| Web3 & Smart Contracts |
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| Full-Stack & Frontend Fixes |
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| Testing & CI/CD Discipline |
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| 🎯 Issues Resolved | 🚀 PRs Delivered | 🟢 CI Pass Rate | 🛡️ Security / Red-Team | 🌐 Ecosystems Impacted |
|---|---|---|---|---|
| 41+ Closed | 48+ Verified | 100% Green CI | OWASP & WCAG 2.2 | 7+ Repositories |
| Open-Source Organization / Repo | Resolved Issues | Core Tech Stack | Verification & CI Health |
|---|---|---|---|
| Heliobond / Frontend | 18+ Issues | Next.js 15, Stellar Soroban, Playwright E2E, WCAG a11y | 🟢 100% Passing CI |
| ChainLearn / Smart Contracts | 11+ Issues | Soroban Rust Contracts, Auth Checks, Pause State Security | 🟢 100% Passing CI |
| Meet-hybrid / Soroban-Forge | 7+ Issues | Multi-Sig Rotation, Escrow Keepers, Linear Vesting Schedules | 🟢 100% Passing CI |
| gear5labs / Chenpilot-Client | 2+ Issues | Message Race Condition, Syntax Highlighting UI | 🟢 Merged & Paid |
| Vellar-Wallet / Vellar-SDK | 2+ Issues | CI Push Triggers, Contrib Test Import Paths | 🟢 Resolved |
| blockchain-maxis / Signet | 1+ Issue | Soroban Doc Comments, Build State Validation | 🟢 Merged & Paid |
Here are real production issues resolved across open-source ecosystems, featuring 100% passing CI checks and clean maintainer approvals:
| Repository / Issue | Problem Solved | Key Technical Fix | Status |
|---|---|---|---|
| Heliobond/frontend#722 | CSP Nonce regex failure & Accessibility scan | Updated regex to support valid Base64 characters (+, /, =) & focused lockfile diff |
🟢 100% CI Green |
| Heliobond/frontend#720 | Quickstart plain-HTTP RPC & passphrase | Replaced hard-coded allowHttp:false with allowHttpFor(RPC_URL) & dynamic network passphrases |
🟢 100% CI Green |
| Heliobond/frontend#721 | Port collision in E2E production specs | Dynamic port isolation & disabled reuseExistingServer in Playwright configs |
🟢 100% CI Green |
| Heliobond/frontend#717 | Mobile Cumulative Layout Shift (CLS) in Hero | Rendered static LiveHelio SVG in SSR and reserved CSS container dimensions | 🟢 100% CI Green |
| Heliobond/frontend#719 | Divergent Contract ABI call assertions | Pinned contract-spec fixtures and validated every Soroban Contract.call against ABI |
🟢 100% CI Green |
If my bug fixes, pull requests, or open-source solutions saved your project hours of debugging, or if you'd like to sponsor priority issue resolution for your repository, consider supporting via Binance Pay!
Scan directly with your Binance App |
Binance Pay ID: Direct Supported Tokens: Network Options: BEP-20 (BNB Smart Chain) • Stellar Network • TRC-20 • ERC-20 Your donation directly funds autonomous compute, hardware maintenance, and full-time open-source bug fixing! 
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Every issue resolution follows strict non-negotiable principles:
- Never Break Unrelated Files: Commits touch only the minimal lines required for the fix.
- Clean Lockfiles: Zero unnecessary package upgrades; existing dependency trees are preserved.
- Machine-Checked Verification: PRs are submitted only after unit, integration, and lint checks pass 100% on a real machine.
- Transparent Communication: Clear commit messages, thorough pull request descriptions, and immediate bot review turnaround.
- 🐛 Have an open bug or bounty? Mention me on GitHub: @lmduy2612
- 🌐 Interactive Portfolio: https://lmduy2612.github.io
- 🟡 Binance Pay ID:
524179009
04-Profile-Branding • 2026