Technical Skills
Backend & Infrastructure
Node.js, Express.js, Laravel, Java 21, PostgreSQL (RLS), Docker, Nginx, REST APIs
Frontend & Cross-Platform
React, Vue, TailwindCSS, Astro, Inertia.js, Flutter, Riverpod, Electron
AI & Automation
Python, Ollama, sqlite-vec, Gemini API, SearxNG, RAG workflows, Playwright, Lead-gen pipelines
Languages & Tools
JavaScript (ES6+), TypeScript, PHP, Dart, Firebase, Supabase, Turborepo / pnpm, SQL
Flagship Projects & Experience
- Engineered a comprehensive ecosystem including the primary Flutter POS app, customer-facing StoreChokro app, and a web admin portal.
- Developed a 44-screen Flutter mobile app with full POS, HR, payroll, and multi-branch support.
- Architected backend powered by 19 dedicated API modules with JWT authentication and custom role-based permissions.
- Integrated full PipraPay subscription billing lifecycle with webhook verification.
- Built a fully local, privacy-first AI assistant workspace with native tool-calling agent loops for workflow automation.
- Implemented a high-performance RAG pipeline mapping PDF/TXT/MD ingestion to nomic-embed-text embeddings and sqlite-vec cosine search.
- Developed native <think> tag parsing to support local reasoning models (Qwen,llma, Gemma).
- Packaged cross-platform desktop application (.exe, .dmg, .AppImage) using Tauri.
- Created an advanced Natural Language → SQL engine designed specifically for production SaaS environments.
- Engineered AST-level SQL rewriting that injects strict tenant isolation filters into every table reference automatically.
- Implemented an LLM provider cascade (OpenAI, Gemini 2.5, Anthropic, Groq, Ollama) with intelligent failover mechanisms.
- Developed a rigorous 92-test evaluation harness ensuring an 80%+ accuracy threshold before allowing CI/CD builds to pass.
- Developed a modern, cross-platform inventory management application natively compiled for Android, iOS, macOS, Windows, Linux, and Web.
- Designed a serverless backend using Firestore to enable instant, real-time data synchronization across all client instances.
- Secured all database interactions directly through Firebase Security Rules ensuring strict role and ownership validation.
Education
BSc. in Computer Science & Engineering (CSE) American International University-Bangladesh (AIUB)