Sefa Karabaş Email & Phone Number

Turkey

• As a Full Stack Developer in the Payment Team, I contribute to building secure and efficient financial systems that enhance user experience and support seamless transactions. My work focuses on integrating payment.
• Payment Method Integration: Implementing and maintaining integrations with payment gateways like Rapyd, Payermax, and others to ensure secure, scalable, and seamless payment solutions.
• Transactional Systems: Developing and optimizing pay-in and cash-out flows for reliability and efficiency.
• Collaboration: Partnering with cross-functional teams to deliver high-quality financial solutions.

As a Software Developer, I am responsible for designing, developing, and maintaining digital solutions for the Digital Channel Assets & Insurance Team at Yapı Kredi. My role involves ensuring the delivery of high-quality software that supports customer-centric products and services in the financial domain.

• As a Data Management Consultant, I contributed to the Data Warehouse (DWH) project focused on the commercial operations of Odeabank. My role involved designing, implementing, and managing efficient data pipelines and.
• ETL Development: Utilized Oracle Data Integrator (ODI) to design and implement ETL processes for extracting, transforming, and loading data into the DWH.
• Database Operations: Worked extensively with Oracle SQL and MS SQL Server to manage, query, and optimize data for reporting and analysis.
• DWH Implementation: Focused on building scalable, reliable, and efficient data warehousing solutions tailored to commercial banking needs.
• Collaboration: Partnered with cross-functional teams to deliver high-quality, data-driven solutions for business decision-making.

• As a Full Stack Developer, I was responsible for designing and building both the main application and the management system for the company. This role required me to leverage a range of technologies to create scalable.
• Main and Management Applications: Designed and developed key applications to support and manage company operations, ensuring a seamless user experience.
• Payment Method Integration: Integrated Paycell payment gateway, ensuring smooth and secure payment transactions for users.

Hacettepe Kariyer Fuarı is regarded as one of the most prestigious events at Hacettepe University. For this event, we gathered more than 110 companies and students. I was the board chairman and in charge of overseeing and controlling the board of directors after working on the event for two years.

As a Full Stack Developer, I was tasked with designing and developing the Stock Project to efficiently track and manage the company's stock reserve. I utilized a range of modern technologies to deliver a seamless, scalable solution.

The association ACM Turkey hosts gatherings of ACMs from all Turkish universities. This structure allows all ACMs to communicate and cooperate on events. While continuing to lead ACM Hacettepe, I also accepted leadership as the president of ACM Turkey, making sure that all ACMs were followed up.

ACM Hacettepe is one of the biggest clubs at Hacettepe University. After 3 years of experience, I continued as the chairman of the board of directors in my 4th year. During this duty, I supervised and monitored all organizations and the board of directors.

As a Software Developer Intern, I contributed to the company’s Onboarding project by writing tests to ensure the quality and stability of the backend system. This role provided me with valuable hands-on experience in backend development and testing.