• Implement RESTful API with Spring framework and Hibernate.• Update and build Angular components in a compliance system with global usage.• Maintain the existing functionality and bug fixing.• Tackle with database queries and debug the existing ones.

• Designed and developed a database module for storing Ethereum blockchain data in Google Spanner database to handle 1000 records per second.• Decreased response of a query from 30s to about 2s by tuning.• Set up a GKE cluster that supports: TLS via cert-manager and LetsEncrypt, gRPC service, and RBAC for admin and developer users.• Developed 3 Bazel rules for installing and deploying pipeline for an application that has UI and gRPC backend and TLS support.• Visualized more than… Show more • Designed and developed a database module for storing Ethereum blockchain data in Google Spanner database to handle 1000 records per second.• Decreased response of a query from 30s to about 2s by tuning.• Set up a GKE cluster that supports: TLS via cert-manager and LetsEncrypt, gRPC service, and RBAC for admin and developer users.• Developed 3 Bazel rules for installing and deploying pipeline for an application that has UI and gRPC backend and TLS support.• Visualized more than 20 metrics by designing Grafana dashboards for the microservices.• Implemented a gRPC-based email service via AWS SES.• Built the admin console using Angular and gRPC-Web to visualize and handle core functionalities.• Designed and implemented 3 modules via web3j for Ethereum: calculate tokens price via monitoring smart contracts, uncle block detection, and transaction fee monitoring. Show less

• Design and develop an enterprise platform with 3 basic modules, CMS, BPMS and IAM, based on Open source technology: Jackrabbit Oak, Camunda BPMN and Keycloak.• Work with DevOps tools like ELK, Jenkins, Docker, Kubernetes and Rancher in HA environment to monitor and manage more than 10 microservices.

• Provide solution for migrating the legacy monolithic application to a new microservice architecture with more than 20 microservices.• Orchestrate microservices via Camunda platform and achieve a fault-tolerant platform.• Decrease the response time from 800ms to 120ms in the repository API by finding the race condition and improving the data model.• Design and develop a tested scalable Document Management System based on a microservice architecture with Spring framework and… Show more • Provide solution for migrating the legacy monolithic application to a new microservice architecture with more than 20 microservices.• Orchestrate microservices via Camunda platform and achieve a fault-tolerant platform.• Decrease the response time from 800ms to 120ms in the repository API by finding the race condition and improving the data model.• Design and develop a tested scalable Document Management System based on a microservice architecture with Spring framework and ActiveMQ for the biggest mobile telecommunication company in Iran to store and retrieve more than 100m records. Show less

• Designed and developed a tested software to communicate with traffic control gates and apply traffic permission based on defined rules and programs with Spring framework and Maven.• Implemented web service and driver of traffic control gate.