Looking for a job

Zeynep Aslı Erhan

@zeynepaslerhan

Full-stack software engineer at an independent practice building multi-tenant platforms with database-enforced tenant isolation.

Turkey

Message

Through my independent practice, I build production systems for e-commerce, SaaS, and mobile clients. I architected a multi-marketplace order platform with queue-based retries and a server-side operations dashboard, and eliminated silent order loss on upstream API failures.

I also created PromptLikeEngineer, a prompt-management SaaS with git-style version control, and a multi-tenant loyalty platform with an append-only points ledger and idempotent POS transaction processing. I use Claude Code daily and built a multi-agent development setup with a read-only MCP server.

Experience

Work history, roles, and key accomplishments

Current

Loyalty & Points Platform

Current

Independent Practice

Jul 2026 - Present (3 months)

Founder of a multi-tenant loyalty platform with an append-only, trigger-protected points ledger and idempotent POS transaction ingest. Shared Flutter package with real and in-memory repository implementations.

Next.js Supabase PostgreSQL Flutter River Pod POS Idempotency Triggers Ledgers

Current

White-Label Website Platform

Current

Independent Practice

Jul 2026 - Present (3 months)

Founder of a multi-tenant website platform serving several client sites from one backend, with tenant isolation enforced by JWT-claim-scoped row-level security.

Next.js Supabase PostgreSQL Row level security JWT Multi Tenant Environments

Current

AI-OS

Current

Independent Practice

Jun 2026 - Present (4 months)

Founder of a multi-agent development system built on Claude, separating orchestration rules from private knowledge state, enforced by a purpose-built read-only MCP server.

Claude MCP Multi Agent Systems Orchestration Knowledge State

Current

Multi-Marketplace Order & Fulfillment Platform

Current

Independent Practice

Feb 2026 - Present (8 months)

Architected a multi-service Node.js/TypeScript backend for a retail e-commerce brand, integrating four marketplace APIs and a shipping-carrier API. Designed a dead-letter-queue retry system and built a Next.js operations dashboard.

NodeJS TypeScript NPM Workspaces BullMQ Redis Next.js REST APIs Dead Letter Queues Distributed Locking Testing Automation

Current

E-Commerce Mobile App

Current

Independent Practice

Jan 2026 - Present (9 months)

Built and maintain a production Flutter app for a beauty e-commerce brand, including a video feed and a remote-config-driven forced-update flow.

Flutter River Pod Shopify Storefront API (GraphQL)Firebase Video Feed Remote Config

Current

PromptLikeEngineer

Current

Independent Practice

Nov 2025 - Present (11 months)

Founder of a prompt-management SaaS with git-style version control on PostgreSQL, shipped as a web app, an MIT-licensed npm CLI, a Chrome extension, and an MCP server on one shared API. Multi-tenant data model with row-level security and LemonSqueezy billing.

PostgreSQL Row level security SaaS Web App Npm CLI Chrome extensions MCP LemonSqueezy Webhooks Token Ledger

Current

Founder & Software Engineer

Current

Independent Practice

Mar 2025 - Present (1 year 7 months)

Full-lifecycle engineering for domestic and international clients under a sole proprietorship: system design, backend and mobile development, API integration, deployment.

System Design Backend Development Mobile Development API Integration Deployment

Restaurant Discovery Platform

Independent Practice

Jan 2026 - Jun 2026 (5 months)

Took over a live Flutter/Node.js/Next.js platform and led a migration from MongoDB to Supabase/PostgreSQL while it stayed in production. Found and fixed a silent data-loss bug and rebuilt the auth layer to accept dual JWT issuers.