● Improved and expanded a Java system for finding the best home renovation and interior design companies in Dubai.● Implemented OAuth2 social media authentication.● Implemented a PostgreSQL-backed full-text search engine returning the best matching companies.

● Led and managed the software development team, including recruitment, training, and performance evaluation.● Led the deployment and troubleshooting process in customer systems, acting as the point person for solving technical support issues.● Oversaw day-to-day IT operations, strategic technical planning, goals and SCRUM meetings.

● Evaluated and researched frameworks and technologies to use in development and operations.● Designed, built and oversaw the system architecture.● Actively took part in writing code, implementing features, solving issues and fixing bugs while also mentoring junior developers.● Provided guidance and training to team members, helping them solve complex problems and improve code quality.● Created and administered the company Confluence and JIRA services.

● Developed a campaign management system for contacting customers using various transport channels including SMS, email, interactive voice responses (IVR), call-center, and more.● Converted and improved an existing monolithic Java system created in Grails and Dropwizard to a microservices architecture with Spring Boot services as the base.● Installed and provisioned servers used by the clients to run our system, mostly CentOS 7 and 8. This includes required system packages, network configuration, database setup, and software installation.● Expanded and scaled the system to support hundreds of concurrent calls and IVRs and millions of SMS daily.● Created an automated campaign execution system based on dynamically defined rules setup by the client.

Worked as both a developer and scrum master on a system used for remote applet and file management of SIM cards or other secure elements. The purpose of the system was to prepare the SIM cards for NFC services with hardware security, e.g., for use in mobile payments or as a transit card, based on the Global Platform specifications.I worked on most parts of the system, including:- SOAP interface with Web Services Security- A system security model based on Spring Security and Spring Security ACL- Integration with customer systems- APDU generation (communication protocol used by the smart card)- File format parsing and import using ANTLR, including encryption/decryption (RSA/3DES)- GUI work using Vaadin- General architectural work to make the system compatible with VISA/Mastercard requirements.As a scrum master, I acted as the mediator between the product owner and the team, and I was responsible for leading all spring meetings, including daily scrum, sprint planning, sprint closure, sprint retrospective, and sprint demo.

I developed a system for capturing photos of skin disorders using a mobile phone and anonymously transmitting them to a backend server, where a doctor would provide a medical assessment. The system comprised an Android application, a server API, and mobile payment integration.