Kerem Hallaç
Senior Software Engineer at Finartz Connect
Türkiye, Turkey
Summary
👤
Senior🎓
Top SchoolKerem Hallaç is a Senior Software Engineer with over a decade of experience building resilient, scalable backend systems for fintech and banking, currently leading engineering efforts at Finartz Connect. He specializes in card processing, credit card operations, card accounting, and prepaid platforms, with a strong track record of designing microservice architectures that improve transaction flows and operational reliability. Kerem is fluent across Java, .NET, and cloud-native stacks and focuses on performance, security, and maintainability in high-throughput financial systems. His career includes senior roles at Papara and Yapı Kredi Teknoloji where he delivered end-to-end solutions under strict compliance and availability requirements. Beyond enterprise work, he contributes to widely used open-source projects such as NumPy, improving exception handling and robustness in core scientific libraries—an unusual crossover that reflects his attention to defensive, production-ready code. Based in Turkey and trained in computer engineering, he combines domain expertise with a pragmatic, test-first engineering mindset.
11 years of coding experience
8 years of employment as a software developer
Mühendislik Fakültesi Bilgisayar Mühendisliği, Mühendislik Fakültesi Bilgisayar Mühendisliği at Çanakkale Onsekiz Mart University
Turkish, İngilizce
Github Skills (8)
exception-handling10
python10
numpy10
debugging9
data-structures8
data-structure8
algorithms6
algorithm6
Programming languages (14)
Github contributions (5)
numpy/numpy
Apr 2020 - Jul 2020
The fundamental package for scientific computing with Python.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 3 PRs, 7 comments in 2 months
Contributions summary:Kerem's contributions primarily involve fixing exceptions and improving the handling of potential errors within the NumPy library's codebase. They addressed exception causes in several files, including those related to building, indexing, and mathematical functions. The user also contributed to improving the exception handling in I/O related functionality. Furthermore, the user collaborated with other contributors to update certain files, improving the overall stability and robustness of the package.
pythonscientific-computingnumpy
keremh/codewars
Jan 2018 - Jan 2019
Contributions:19 pushes, 1 branch in 1 year
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