Halil İbrahim Direktör

Native Mobile Developer

Dynamic Brain Neurotechnology•  September 2024 - Present•  Samsun/Türkiye

Spearheaded the development of cross-platform mobile applications (Android and iOS) to support tDCS device functionality, utilizing Java and Kotlin for Android, and Swift and SwiftUI for iOS. Collaborated closely with backend developers to ensure seamless API integration, enhancing data synchronization and overall app functionality. Managed and implemented OTA (Over-the-Air) updates, enabling real-time firmware upgrades and improved device control. Designed and implemented an in-app exam system, providing interactive assessments for users to maximize device efficacy and engagement.

Software Team Leader

Woma Advertising, Design and Decoration Trade Inc.•  February 2024 - June 2024•  İstanbul/Türkiye

Led the team responsible for the development of mobile applications with machine learning capabilities that led to a 40% increase in user engagement within the first six months post-launch. Enhanced the mobile development workflow by implementing Node.js and Angular, reducing the codebase by 30% and accelerating cross-platform deployment times. Designed a CI/CD pipeline that automated testing and deployment processes.

Back End Developer

Woma Advertising, Design and Decoration Trade Inc.•  December 2023 - February 2024•  İstanbul/Türkiye

Directed the redesign of a cross-platform analytics tool, increasing data processing speeds by 40% through an Angular frontend and Node.js backend. Implemented advanced security protocols in our web applications, achieving a 15% decrease in vulnerability reports. Advocated for Docker containerization, optimizing deployment processes and reducing server costs by 25%. Oversaw the migration of our primary user database to a microservices architecture, enhancing system scalability while ensuring a seamless transition with zero customer downtime. Integrated AI-powered chatbot functionality into customer service portals, boosting user engagement by 30% and decreasing support ticket volume by 20%. Established CI/CD pipelines with Jenkins, increasing deployment frequency by 50% and cutting rollbacks by 75%.

Research and Development Engineer

Onder Lift Steel Machinery Industry and Trade Limited Company•  May 2023 - November 2023•  Manisa/Türkiye

Designed and led the development of an optimized lift control system for ESP-XL, increasing data processing speed by 25% and reducing system latency. Initiated a cross-functional project to integrate IoT connectivity, enabling remote diagnostics and firmware updates, which lowered service center visits by 20%. Established comprehensive code review and testing protocols using Continuous Integration (CI) and Continuous Delivery (CD) practices, enhancing code quality by 40% and minimizing bug occurrences. Collaborated with the hardware team to co-design microprocessors that improved instruction set compatibility, resulting in a 12% speed boost for computing tasks. Enhanced existing embedded systems for performance, achieving a 20% increase in processing efficiency and energy savings across multiple product lines.

Intern Research and Development Engineer

Onder Lift Steel Machinery Industry and Trade Limited Company•  January 2023 - March 2023•  Manisa/Türkiye

Developed an embedded system for autonomous mobile robots, contributing to a product line that achieved a 20% increase in customer satisfaction through enhanced reliability and user experience. Supported the migration of legacy embedded systems to modern platforms, resulting in a 15% cost reduction due to improved energy efficiency and lower maintenance requirements.

Back End Developer

Lebara Mobile•  January 2020 - January 2023•  England/UK

Designed and executed a company-wide API gateway to handle over 10,000 requests per minute, leveraging Azure for a scalable cloud infrastructure. Collaborated with cross-functional teams to develop a bespoke CRM system, increasing sales team efficiency by 20%. Led the refactoring of a legacy codebase to a modern React/Redux stack, resulting in a 50% improvement in application performance.