Doctolib strives for a healthier world with more than 2,500 employees across France, Italy, and Germany.

• Developing new features for hospitals and practitioners by using Ruby on Rails, Postgres, React and React-Native

• Maintaining more than 20 legacy features in our team

• Reducing 10% of CI/CD time by converting E2E tests to controller and React library tests

• Improving the performance of queries by analyzing them on Datadog

• Mentoring one intern, one Junior, and one Senior Full Stack Engineer

• Fixing several legacy bugs (+50)

Karafs has five products such as Karafs (Calorimeter), Gym, Denj (Meditation), Bento (Diet planning), and Luna (Period tracker). The category of all of these products is Health/Fitness with different vision, strategy and user goals.

Responsibilities include:

• Developing the codes with NodeJS (Typescript), React-Native, and React using Rest Api and Clean architecture
• Optimizing queries in MongoDB and MySQL (Improve 70% on response time)
  • Utilizing Nodejs (Typescript), Mongo DB v4.4, React-Native, React, Metabase, Redis, RabbitMQ, and Web Socket, chat messaging infrastructure
  • Maintaining over 500K registered users less than 4 month with hacing 30k daily active users
• Designing servers and networks (about 30 servers) by managing with three different ESXI’s
• Managing Automated/unit/e2e tests (Code coverage 7%)
• Implementing DevOps requirements (Reducing 30% of development deploying)
  • Using such tools such as ESXI, DNS management, Email server, Servers Management, ELK, Nextcloud, Nexus Repository, Sentry, Jira, Gitlab, and Android apk builder
• Mentoring, Training, and leading ten junior/mid-level developers

Five is an American startup company that creating a social e-commerce application utilized by J2EE, React-Native and also using Google Cloud Platforms, and Google Pub/Sub architecture for deployment.

Responsibilities include:

• Developing by Java Spring Boot and PostgreSql
• Maintaining 100k users all over the world
• Optimizing Slow queries at SQL and indexing the data
• Maintaining GCP (Google Cloud Platform) servers and SQL database

Karafs product is the market leader in Health/Fitness category in Iran

Responsibilities include:

• Developing using Nodejs (Typescript), Mongo DB v4.4, React, React-Native, ELK, Metabase, Power BI, Redis, RabbitMQ, Web Socket, and Load Balancer
• Support offline by using Redux and hooks in React-Native
• Optimizing requests by optimizng mongodb queries, replication and sharding
• Maintaining over 7M users within 6 years and 500K monthly active users

Creating a Social Engine Management named Motoshub as number one Social Engine to produce Social Network in the Iran at Sharif University of Technology.

Responsibilities include:

• Developing and leading a team that using Laravel, NodeJs, MySQL, ELK, and React-Native
• Creating, executing, and maintaining over 100 companies social network with Motoshub.

Creating an ERP Business Project that includes workflow generator, form generator, process generator, and connect to many authentication services such as LDAP, Gmail

Responsibilities include:

• Maintaining more than 1000 business form, workflows, and processes
• Developing with Java, JSP, Oracle, Hibernate, ExtJS, JS, CSS, HTML, and NodeJS
• Maintaining 2k daily client users
• Using Gitlab CI/CD and Jenkins for deployment