Managed several teams of varying sizes, working with software developers, marketing, UX designers, external users, etc. Providing product vision and roadmaps. Overseeing technical design, development, testing, and deployment. Worked with several analytical and reporting services such as Google Analytics, MetaBase, and Apache Zeppelin.Products developed in these teams include:- Cafe Bazaar developers' panel: A new panel for app developers, based on microservice architecture. Mostly written in Python (using Django framework) and Go. Deployed on Kubernetes (using Docker images). Web interface used Vue.js as a framework. - Divan: A web application used by internal content teams, to review and moderate contents of Cafe Bazaar (Android apps developed by external developers) and to penalize guideline violations. Developed using Django and AngularJS.- Insights: An analytics system, written in Go and Python, to collect, accumulate, process, and represent data regarding Cafe Bazaar applications. Used InfluxDB as a timeseries database, and PostgreSQL as reporting database (using aggregated data from InfluxDB).- Pishva: CMS for Cafe Bazaar Android developers.- Divar Chat: Chat service written in Elixir (using Phoenix framework), and utilizing Cassandra as database. Clients included in Divar applications for Android, iOS, and web. Includes fraud, spam, and harassment detection.

August 2013 - June 2014:Developing Divar, an Iranian classified ads service, using Python (Django framework). Added several features both in front-end and back-end. Maintained the servers. Mentored and supervised two junior developers. Reviewed all features in back-end and front-end code bases before deployment. Maintained and optimized database management systems such as PostgreSQL and Redis, and ElasticSearch as search engine.June 2014 - September 2014:Development and maintenance of Ghollak (Bazaar's billing system). Setting up and managing virtual servers using ESXi. Optimized database schemas and queries on PostgreSQL.September 2014 - December 2016:One of the main member of Cafe Bazaar Developers' Squad, a team in charge of developing tools and features for android app developers. Designed, developed, and maintained Cafe Bazaar developers' panel, a web panel for app developers to upload and manage their apps in Cafe Bazaar. Developed several REST and RPC APIs for internal and external use, using Python. Modified web interfaces, working with some JavaScript libraries and frameworks such as JQuery, and AngularJS.

Junior member of a technical team in charge of design and development of Ghollak, an internal billing system for CafeBazaar (an Iranian Android app store, with 37+ millions active installs). Worked with Django framework (in Python), and PostgreSQL.Developed systems included accounting, transaction management, reporting, and several payment gateway integrations.