Full-stack engineer · backend-focused · Cairo
Full-stack apps on backends that don't wake you up at 3 a.m.
I'm Seif. I build the whole thing: the data model, the API, the interface people actually use, and the deploy that keeps it running. Eleven production apps and sites so far, for teams in Saudi Arabia, Egypt, and France.
What I build, roughly
swipe the diagram →
The shape of most systems I ship. Solid dots are requests, coloured dots are responses and webhooks. Hover a box, or send a request.
Selected work · 11 live sites
Live, in production, right now.
These are the real sites, loaded inside this page. Switch device, flip language, poke around.
French speech-therapy platform: a NestJS API on PostgreSQL with Drizzle, BullMQ job queues on Redis, Stripe billing, S3 storage, and a Next.js web app sharing Zod contracts in a Turborepo monorepo with Docker infra.
NestJSPostgreSQL + DrizzleBullMQ + RedisStripeNext.jsTurborepo
Backend systems
Private APIs I designed and ran. No public URL, so here's what they do. Hover one.
CRMPro
Multi-tenant B2B CRM platform
- Shared-database multi-tenant NestJS API with separate tenant and admin planes, RBAC, and plan-gated quotas.
- BullMQ import/export workers with atomic claim and reclaim; 90 API specs, bulk up to 500 leads.
NEST · POSTGRES · REDIS · BULLMQVoclio
Voice-to-task productivity API
- Dual-process Express API and BullMQ workers for voice → speech-to-text → LLM extraction, with a sync fallback.
- Google Calendar OAuth with AES-256-GCM token encryption and timezone-aware due dates.
NODE · REDIS · BULLMQField Capture
Field ops and workforce payroll
- Multi-role portals with Stripe Connect transfers, payout-period dedupe, and S3 uploads up to 500 MB.
- GitHub Actions deploys to AWS EC2 with Prisma migrate, PM2, and Caddy TLS.
STRIPE · AWS · DOCKERRabet
Pay-per-lead marketplace
- Client, provider, and admin APIs with unlock-gated contact privacy and an immutable wallet ledger.
- Transactional provider onboarding and JWT refresh sessions with logout-all revocation.
NEST · POSTGRES
Working notes
How I think about the work.
Opinions I've paid for. If you disagree with one, that's a good first conversation.
Postgres until it hurts.
It rarely hurts. Most products never need anything else; they need indexes, a migration habit, and someone who reads the query plan.
proof · Lov, CRMPro, Rabet all run on one Postgres with Drizzle or Prisma migrations.
Contact
Tell me what you're building.
A project, a role, or a question about something above. I read every message myself and reply within 24 hours.