I design and build secure, high-performance distributed systems, multi-tenant SaaS platforms, and production-grade Agentic AI/RAG architectures. With 5+ years of full-stack experience, I focus on clean systems design, database security, and resilient background worker orchestration.
🤖 Agentic AI & Advanced RAG
Orchestrating multi-agent systems via LangGraph, multimodal document processing (Gemini Vision), semantic search optimization (Qdrant), and custom confidence-gating retrieval pipelines.🏢 Enterprise SaaS Architecture
Multi-tenant database design, secure row-level isolation (Supabase RLS), and robust background queues (BullMQ, Redis) designed for high-concurrency event handling.🛡️ Cloud & Regulated Security
Architecting environments that meet strict compliance requirements (HIPAA data isolation, FDA teleguidance safety metrics), AWS serverless, and containerization (Docker).
| Layer | Technologies & Tools |
|---|---|
| Languages | TypeScript · JavaScript · Python · SQL |
| Frontend & Mobile | Next.js · React · React Native · Redux Toolkit · Tailwind CSS |
| Backend & AI | Node.js (NestJS) · FastAPI · LangGraph |
| Data & Vector | PostgreSQL (Supabase) · Qdrant · Redis |
| Infra & DevOps | AWS (ECS/Lambda) · Docker · GitHub Actions |
- Portfolio:derejeseifu.vercel.app
- Upwork:Top Rated Freelancer Profile (5.0★)
- LinkedIn:linkedin.com/in/drjseifu1991
- Email:Derejeseifu3030@gmail.com
- Calendly:Schedule a Strategy Call
Note on Account Migration
Active profile: @drjseifu3003 | Historical/archived work remains at @drjseifu1991.



