Berke Süslü
Backend Software Engineer
İstanbul
Summary
I am a Backend Software Engineer with over three years of solid experience in the payment systems industry. I specialize in C#, .NET, and SQL, developing scalable software solutions and enhancing system sustainability and performance. My work primarily focuses on database management and backend architecture optimization. With my growing expertise in financial technologies, I am eager to contribute to innovative solutions and add value in this fast-paced, dynamic sector.
Overview
4
4
years of professional experience
2
2
Languages
10
10
years of post-secondary education
Work History
Senior Software Developer
Klon Payment (PaybyMe)
05.2025 - Current
- Designed, developed, and maintained backend systems using C#, .NET, and MSSQL, applying Domain-Driven Design principles to ensure modularity, scalability, and high performance across core business domains.
- Integrated various bank APIs using WSDL and SOAP protocols to enable virtual POS setups, automate bank statement retrieval, and facilitate secure fund transfers.
- Worked on an automated Onboarding system that streamlined merchant registration and agreement processes.
- Utilized tools such as Datalust-Seq, Azure DevOps, Jira, GitLab, and Hangfire for monitoring, version control, and task management.
Software Developer
Klon Payment (PayByMe)
04.2023 - 05.2025
- Built and managed APIs for services such as BTransfer and IKS in compliance with TCMB (Central Bank of Turkey) requirements.
- Implemented a Notification Service to deliver SMS and email messages using SMTP protocols.
- Contributed to the development of an internal Back Office Management Panel to manage user permissions and automated processes.
- Developed a Customer Report Panel for merchants to monitor reports and payment histories by consuming RESTful APIs for real-time and efficient data access.
Computer Engineer
Buyuksoy Computer and Information Services
11.2021 - 04.2023
- Developed automation software using C#, .NET, and Python for industrial systems.
- Built an automated label printing system integrated with a conveyor belt, capable of scanning barcodes, querying a remote database, generating new barcodes, and printing them with dynamic height adjustment based on box dimensions.
- Created lightweight control software for CNC machines to manage basic manufacturing operations.
- Utilized tools such as ROS and OpenCV to process image and motion data for automation-related tasks.
Education
Bachelor of Science - Computer Engineering
GEBZE TECHNICAL UNIVERSITY
Kocaeli, Turkey 09.2016 - 01.2023
High School -
Suadiye Hacı Mustafa Tarman Anadolu Lisesi
Istanbul, Turkey 09.2012 - 06.2016
Skills
C# / NET
Timeline
Senior Software Developer
Klon Payment (PaybyMe)
05.2025 - Current
Software Developer
Klon Payment (PayByMe)
04.2023 - 05.2025
Computer Engineer
Buyuksoy Computer and Information Services
11.2021 - 04.2023
Bachelor of Science - Computer Engineering
GEBZE TECHNICAL UNIVERSITY
09.2016 - 01.2023
High School -
Suadiye Hacı Mustafa Tarman Anadolu Lisesi
09.2012 - 06.2016