Celil Yiğit
Backend Software Engineer · ML & HPC Enthusiast
Munich, Germany
Experience
Backend Software Engineer (Part-Time)
CHECK24 · Munich, Germany
July 2024 - Present
- •Implemented 140+ functional tests covering critical paths, which detected 3 major bugs before production
- •Refactored the legacy test suite to streamline the CI/CD pipeline, resulting in a 75% reduction in build time
- •Reduced cron job runtime from 50 minutes to 2 minutes by optimizing MySQL queries with bounding-box constraints and algorithmic optimization
Backend Software Engineer
Picus Security · San Francisco, US (Remote)
March 2023 - April 2024
- •Improved simulation performance by 65% by refining query scopes and database indexing, verified via New Relic
- •Built a password-hash auditing pipeline on AWS EC2 and EFS, reducing runtime from 23 days to 7 hours and infrastructure costs by $1,050/month
Fullstack Software Engineer
ASELSAN · Ankara, Turkey
July 2021 - March 2023
- •Engineered backend services for a Smart City ecosystem designed to support a population of 2 million
- •Developed a C++ tool to parse raw binary sensor logs, significantly speeding up hardware debugging for the integration team
- •Optimized .NET Core LINQ queries for SmartCity backend, increasing data retrieval speeds by approximately 30%
Education
M.Sc. Informatics
Technical University of Munich
Major: Machine Learning and Analytics | Minors: High Performance Computing, Software Engineering
CGPA: 2.30/5.00 (Bavarian Scale)
B.Sc. Computer Engineering
Middle East Technical University
Member of IEEE METU | Member of METU Bulls Wrestling Team
CGPA: 3.74/4.00 | Ranked 14th among 261 students
Skills
Technologies
GinReact.jsNext.jsFastAPIgRPCPostgreSQLDockerAWS
Languages
GoPythonC++TypeScriptPHP
Human Languages
English - C1 (IELTS 8.0)German - B1.2Turkish - Native
Leadership & Speaking
CHECK.conf 2025 Speaker
Talk: "Don't Write Tests Just for the Sake of It"
Selected as a speaker for CHECK.conf 2025 (Leipzig), presenting technical insights to 500+ engineers. One of only 20 speakers chosen and the only Working Student in the event's history.
View LinkedIn PostLinks
Interested in working together?
I'm always open to discussing new opportunities and interesting projects.