Özgür E.
Senior Software Developer
Experience
Nov 2023 - Dec 2024
1 year 2 monthsHamburg, Germany
Senior Software Developer
Cubic Transportation Systems
- Designed, implemented, and deployed two new microservice components, enabling new business functionalities and supporting regulatory compliance for enterprise clients.
- Ensured business continuity and system reliability within a high-transaction, microservice-based environment, taking ownership of backend systems under dynamic business conditions.
- Identified and refactored inefficient implementations, applying cost-benefit analysis to optimize performance, maintainability, and code quality.
Oct 2019 - Nov 2023
4 years 2 monthsHamburg, Germany
Technical Team Lead
Descartes Systems Group
- Contributed actively to the development team; evolved the MVP into a highly transactional, horizontally scalable system, resulting in the acquisition of 20+ new B2B customers and a 100× increase in transaction throughput while maintaining 99.99% uptime.
- Evaluated and enhanced existing enterprise logistics applications to align with evolving technical and business requirements, improving overall stability and performance.
- Applied concurrency and multithreading techniques to improve system performance and throughput under heavy workloads.
- Strengthened code quality by implementing design patterns, enforcing test automation, and applying Clean Code standards across the development lifecycle.
Apr 2019 - Jul 2019
4 monthsHamburg, Germany
Senior Software Developer
Moebel.de
- Developed and optimized 12 backend microservices hosted on AWS for invoicing, tracking, and performance analytics, to improve user experience and operational transparency.
Jul 2016 - Apr 2019
2 years 10 monthsTechnical Project Manager
Citi Group
- Directed the implementation of the test automation framework for Electronic Fund Transfer services, reducing operational costs and manual workload by 1,000 man-days annually, while improving transaction reliability and software quality.
- Managed end-to-end delivery of multiple digital banking projects by coordinating cross-functional teams across regions to ensure on-time, compliant, and high-quality releases.
- Bridged business and technology teams, translating strategic requirements into actionable technical roadmaps, overseeing vendor collaboration, and ensuring architectural alignment with global standards.
- Oversaw project lifecycle governance including planning, risk management, and stakeholder reporting, ensuring all digital transformation initiatives met cost, quality, and compliance objectives across multiple regions.
Sep 2012 - Jul 2016
3 years 11 monthsSenior Software Developer
Multinet
- Contributed to the modernization of the MVP product into a scalable, high-performance payment service provider platform, aligning development efforts with new business strategies and enabling a wider merchant base, which increased transaction volume to 3M TL per day.
- Developed WebPOS, a new payment application improving user experience and operational efficiency in financial transaction processing, significantly reducing field service, logistics, and hardware maintenance costs.
- The project was nominated as “Most Innovative Software Product of 2014” by TESID.
Aug 2009 - Sep 2012
3 years 2 monthsSenior Software Developer
Yurtici Kargo - DPD
- Designed and implemented a new automated reporting platform transforming manual report generation into a real-time, scheduled, and data-driven architecture that improved executive decision-making and delivered measurable business value across the organization.
- Maintained and enhanced mission-critical logistics software processing millions of daily transactions.
Apr 2004 - Aug 2009
5 years 5 monthsTechnical Team Lead
Isdemir
- Developed and deployed core production and warehouse management modules across multiple plants.
- Migrated legacy systems into new enterprise platforms, improving performance and process transparency.
Summary
Highly skilled Senior Software Developer with extensive experience in building enterprise-grade Java applications using Spring Boot, Microservices, and AWS. Specialized in scalable backend architectures, performance optimization, and secure system integration across finance, logistics, and e-commerce domains. Proficient in applying Clean Code, CI/CD, and test automation practices to deliver maintainable, high-quality software in Agile enterprise environments.
Languages
Turkish
NativeGerman
AdvancedEnglish
AdvancedEducation
Oct 2005 - Jun 2007
Çukurova University
M.Sc. in Engineering and Technology Management · Engineering and Technology Management · Turkey
Oct 1999 - Jun 2003
İzmir Institute of Technology
B.Sc. in Computer Engineering · Computer Engineering · Turkey
Certifications & licenses
Project Management Professional
PMI
Solutions Architect
Global Dev Experts
Solutions Architect Associate
AWS
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