Working with the Preezma partner's projects(Hyperguest) and leading the backend team of Preezma's startup.

Accomplishments:
- Building cloud architecture and database architecture
- Building solution architecture
- Code reviewing
- Communication with the clients and big teams
- Working on big projects with extra big traffic(Hyperguest).
- Integration of many hotels suppliers and services, and certification of them
- Building the tests
- Building the service to test existing services communication and reporting the issues if there are
- Building the analytics service

Working on various projects for the US, EU, and UAE, based on AWS, Node.js, Express, TypeScript, Serverless, Nest.js, Docker/Docker-Compose, AWS, MongoDB, MySQL, PostgreSQL, MsSQL, Redis, Secuelize, TypeOrm, RabbitMQ, MariaDB, Elasticsearch, Swagger, Kubernetes, ...etc.

Accomplishments:
- Building cloud architecture and database architecture
- Building Serverless applications
- Creating an automated conversation and messaging system
- Building solution architecture
- Payment system integration
- REST API implementation and Socket.io integration for the conversation functionality
- Work on existing microservices (more than 500).
- Building new microservices
- Sped up of microservices performance
- SQL queries optimization
- Increase Unit tests coverage
- Code reviewing
- Communication with the clients and big teams

Worked on various projects based on AWS, Node.js, Express, Serverless, GraphQL, DynamoDB, MongoDB, MySQL, Blockchain, ...etc.
Accomplishments:
- AWS cloud architecture
- Database architecture
- Building Serverless applications
- Payment methods integration(Stripe, PSI Gate, Shopify, AliPay, CoinPayments)
- Booking APIs integration
- Blockchain, building smart contracts, ICO
- Building algorithms (matching algorithms, autobuy, etc...)