Ehsan Souri Email & Phone Number

Tehran, Iran

Madrid, Community Of Madrid, Spain

Vidoomy is one of the most popular Video advertising agencies in Spain. We have a user synchronization process that helps us identify users and suggest relevant ads. My responsibility was to improve the performance of this process. After fixing bugs and optimizing queries, I was able to increase the number of synced users to 90%. I also changed some data models that we ingested to Druid and some queries, which helped us save up to 10% of our resources and have a 50ms better response time.Another responsibility was to change the HTTP framework from fasthttp to gin, which resulted in a 20% reduction in the number of goroutines to 20%. Safe migration of the system to a new framework was one of the challenges.

Tehran, Iran

Ramzinex is one of the most extensive cryptocurrency exchanges in Iran with about 200K monthly active users.I was responsible for developing and maintaining the core part of transaction management. The company stack was PHP Laravel and Nodejs and my task was to refactor legacy codes with Golang and also redesign the old system with the perspective of microservice architecture. Effective communication between multiple services and with the blockchain network, and data consistency management were some of the challenges.Mentoring junior developers was also one of my responsibilities.

Tehran, Iran

Tapsell is the most significant ad service with about 40M monthly active users in Iran. My responsibility was to create and maintain services for storing and retrieving and also real-time updating users’ information. The company stack was kotlin and Spring-boot. I use Kafka for connecting microservices, Cassandra and Elasticsearch, and MongoDB for storing data. I also, use Druid as a real-time analytics database for aggregated queries. As a software engineer, I did my best to design efficient and simple software architecture and write unit and integration tests. Communicating with other teams such as the AI team giving them test and train data to train their models were some of my important responsibilities.

Tehran, Iran

• VPN Client: I designed and implemented a VPN client android application to connectto organization’s server. The most challenging part of this project was reducingbattery usage for long-time connections.• Messenger: I designed and implemented a messenger android application fromscratch. We had an XMPP server and the messenger application had to communicatewith it. Writing unit and integration tests and using reactive programming forgetting better performance were some of the key parts of that project.

Tehran, Iran

• Befrest project:befrest is a push service that I have been responsible for developing its android SDK. the main goal of this project was to create a secure and stable web socket connection to the server to receive messages in-app and when the app is in the background. writing tests for different parts of the project and using TDD procedure and CI-CD have been key parts of the project.• Resana project:resana is an advertising platform that my task was developing its Android SDK. smart communication to the server to optimize battery and data usage, as well as low SDK volume, have been key parts of the project. One of the skills acquired in this project was marketing to attract different applications for collaboration.• Telfa project:it is an unofficial telegram, which is a fork from the telegram open source projectmy task was to add new features to telegram. some challenges of this project were maintaining the application and having a secure connection with the server.

Tehran, Iran

C programming teacher assistant for iranian and also international students(teaching in english)

Tehran, Iran

An Android app to show recipes. Food Network Social Network. Most of the focus of this project has been on the user-friendly interface

Bachelor'S Degree, Computer Engineering

High School Diploma