About
I'm Mohammed Sinan, a Full-Stack Software Engineer with 5+ years of experience building and operating production SaaS products and high-traffic web platforms with TypeScript, Node.js, NestJS, React, and Next.js.
I design multi-tenant APIs, authentication and authorization systems, background processing, payment integrations, third-party API integrations, and cloud infrastructure.
My work includes systems handling 2M+ user predictions, applications improved by up to 63%, and production services delivered with Docker and CI/CD.
Experience
Full-Stack Developer / Lead Backend Engineer
Jun 2026 – PresentLocalEyes AI · Remote
Architected and developed a multi-tenant NestJS SaaS backend with secure tenant isolation, Google Business Profile synchronization, BullMQ workers, geo-grid rank tracking, AI audits, Stripe billing, and DigitalOcean deployments.
Full-Stack Developer
Jun 2021 – PresentKooraKings · Optimiza · Remote
Built and maintained the Sails.js backend powering sports contests and 2M+ user predictions across approximately 180 REST endpoints, including prediction workflows, fantasy systems, live data synchronization, and administrative APIs.
Front-End Developer
Jun 2021 – PresentRiyadh Season · Optimiza · Contract · Remote
Developed and maintained a 30+ page CMS-integrated production platform, improving performance by approximately 24%, modernizing frontend architecture, and reducing the deployment pipeline to approximately 34 seconds.
Skills
Languages
- TypeScript
- JavaScript
- Python
- SQL
Backend
- Node.js
- NestJS
- Express.js
- Sails.js
- REST APIs
Frontend
- React
- Next.js
- Astro
- Tailwind CSS
- Ant Design
- Redux Toolkit
- React Router
- TanStack Query
Databases & Data
- MySQL
- MariaDB
- MongoDB
- Supabase
- TypeORM
- Prisma
- Drizzle
- Waterline
Infrastructure & Architecture
- Redis / Valkey
- BullMQ
- Firebase
- Multi-Tenant SaaS
- RBAC
- OAuth 2.0
- Webhooks
Cloud & DevOps
- Docker
- AWS
- GCP
- DigitalOcean
- GitHub Actions
- Bitbucket Pipelines
- CI/CD
Tools & Testing
- Git
- Jest
- Vite
- Webpack
- Babel
Education
Bachelor of Business Administration
Aug 2026University of Tikrit
Certifications
HackerRank
freeCodeCamp