Sinan Talha Koşar Email & Phone Number

Dubai, United Arab Emirates

• Initiated automated workflow feature, unmatched by competitors, increased sales conversion rate by 5%.• Implemented Azure login, impersonation, and multiple sign-ins in 3 weeks, achieving: * Expanded customer base by 10%, boosting revenue. * Reduced bug analysis time by 30%, improving customer satisfaction.• Designed a test coverage merging, extraction, and reporting system, achieving 10% early detection.• Led a team of 5 engineers in a Series C company for technology migration.• Migrated all 6 modules of payroll from EmberJS to ReactJS in a living platform: * A 90% decrease in feature-related bug tickets within 10 months. * Performance and scalability improvements resulted better customer satisfaction and increased platform stability.

Ankara, Turkey

• Joined the startup (in Seed round) as a founding engineer.• Created SPA, real-time data transfer (web-sockets), visualization (ChartJS) with ReactJS class-based components.• Designed real-time data storage and transfer architecture from IoT devices to client application.• Designed synchronization system between closed-circuit system and cloud servers (AWS).• Won Startup Estonia Special Award in Startup Istanbul 2019 and attended Startup Estonia in Tallinn.

Ankara Province

Worked on Customs Information System and Central Registry System projects, by using JAVA Spring Boot, PrimeFaces, Docker and PostgreSQL on micro-service architecture.

Istanbul, Türkiye

Completed the Core Java, Spring and ReactJS training given by engineers in the company. (Certified)

Karlsruhe, Baden-Württemberg, Germany

Company has native language for employees which has a learning curve for new joiners. Developed a keyword searching system in Python3 that returns topic indexes in the company documentation