Hasan Karlı

Jourma GmbH · Contract · Remote

• Jourma GmbH is a subsidiary initiative of İşbank. Worked on the Jourma application integrated within İşCep, one of Türkiye's leading banking applications
• Led the architectural evolution of a modular super-app platform supporting six independent mobile mini-applications
• Improved performance, scalability, and reliability across Flutter clients and backend-integrated systems
• Established production-grade analytics, monitoring, and CI/CD pipelines using Amplitude, BigQuery, Sentry, Codemagic, and Shorebird
• Built AI-powered data ingestion and scraping systems using Python (Selenium) and GPT models, significantly reducing manual operations
• Delivered mobile applications exceeding 200k+ downloads across app stores
• Developed and maintained a supporting web project aligned with the mobile platform and backend services

Mobsmile

• Built and refactored multiple production mobile applications from scratch
• Designed application architectures including state management, networking layers, flavors, deep linking, and CI/CD workflows
• Implemented advanced features such as OCR, edge detection, OpenCV pipelines, and Play Asset Delivery
• Integrated analytics, crash reporting, and distribution tools including Firebase, Amplitude, and Fastlane
• Migrated infrastructure from Heroku to self-hosted servers, configuring PM2, MySQL, Redis, NGINX, and load balancing
• Developed web scraping tools using Puppeteer
• Delivered 4 published applications, some exceeding 100k+ downloads

Modaltrans

• Developed backend services across multiple Rails engines, integrating third-party systems including GPS services
• Wrote unit and system tests to ensure reliability and correctness
• Built embeddable JavaScript components, Mapbox integrations, and monitoring tooling
• Created and published Ruby gems with a combined total of 7k+ downloads