Mohammad Memariyan Email & Phone Number

Tehran, Iran

* Designed and implemented a fleet management system as an MVP according to modular monolithic architecture to accelerate the development in the first phase and open to migrating to microservices in the next phases.* Optimized vehicle routing problems (VRP) by implementing a highly available and low latency optimizer service * Created more than 8 infrastructure components such as search, metric, user, scheduling, security, etc with Spring boot to facilitate developing a new system with handled base requirements such as authorization, test, monitoring, searching, logging, etc.

Tehran, Tehran Province, Iran

* Technical lead of payment and supper application team* Acted as a technical consultant and designer for at least 5 critical company projects. (Refund, Wallet, Direct-Debit, Purchase, …)* Unlocked BNPL card payment by linking more than 1000 POS devices to credit payment infrastructure.* Enhanced payment success rate by 10% through the adaption of non-blocking patterns like event sourcing, reactive approach, …* Developed a spring boot-based framework, to streamline payment integrations across 15+ microservices.

Tehran, Tehran Province, Iran

* Resolved monitoring issues by implementing an AOP-based library for Sentry, Prometheus, and Kibana integration in all projects.* Redesigned 3 legacy services to prepare a new infrastructure for developing new features* Documentation of more than 6 project's use cases according to UML diagrams principles.* Maintained over 10 microservices (shared services and business services) such as card-to-card, bill, toll payment systems. Code review of many features to ensure code quality is good enough.* Improved security mechanisms according to the AAA concept and OWASP Top 10. Also generated hybrid token stores based on spring security.* Reduced client application startup time by 3 seconds using the BFF pattern for efficient data integration.* Refined an algorithm to create competition between more than 7 payment systems and choose the best of them.* Organized payment settlements by working on the account sharing preferences feature.* Played a key role in developing Refund project based on async and event-driven solutions to decrease double refund risk to zero.* Significantly decreased 2 seconds transaction search response time by optimizing DB models and index definitions.* Contributed to developing a component, based on docker test containers to write standard integration tests.* Integrated a mock system based on the Wiremock for the 4 test teams to simulate all desired scenarios.

Tehran Province, Iran

* Involved in an IOT system implementation for managing building objects (microservices architecture)* Established some new technologies such as a spring gateway, an embedded load balancer, and message brokers (Such as RabbitMQ) to update system architecture.* Customized some hardware system features by writing some scripts

Tehran, Tehran Province, Iran

* Migrated a monolithic system architecture to 8 microservices and reduced 20% response time.* Reduced data processing time by using NoSQL databases (MongoDB) and special search engines (SOLR, …)* Optimized application requests by using RPC and Protobuf* Implemented a transportation system like Uber in SOA architecture* Converted project framework from JSP to a Spring boot project

Tehran Province, Iran

* Developed a navigation application (client platform: Android, back-end: Java)* Normalized more than 20 MySQL database table models by analyzing System requirements and making ERD* Reduced latency for a location-based service by optimizing UDP and TCP network sockets usage.* Collaborated on a delivery system by using an optimized algorithm to minimize delivery time and maximize capacity

Master'S Degree, Computer Software Engineering

Bachelor'S Degree, Computer Software Engineering