Özgür Ertekin-Senior Software Developer
Check rate
Experience
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.
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.
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.
Technical 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 Citi 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.
Senior 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.
Senior 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.
Technical 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.
Industry experience
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Experienced in Transportation, Banking and Finance, Metals and Mining, Information Technology, Government and Administration, and Retail.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Operations, Quality Assurance, Supply Chain Management, and Business Intelligence.
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.
Skills
- Java (11–17), Spring Boot, Hibernate Microservices, Restful Apis, Event-Driven Systems
- Junit, Mockito, Testng Version Control, Git. Subversion
- Postgresql, Oracle Db, Mysql, Mssql, Mongodb Design Patterns. Clean Code, Solid, Kiss, Yagni
- Intellij Idea, Jira, Confluence Code Review, Code Refactoring
- Performance Optimization & Scalability Test Automation, Ci/Cd Pipelines
- Devops Colloboration Scrum And Agile Mindset
Languages
Education
Çukurova University
M.Sc. in Engineering and Technology Management · Engineering and Technology Management · Adana, Turkey
İzmir Institute of Technology
B.Sc. in Computer Engineering · Computer Engineering · İzmir, Turkey
Certifications & licenses
Solutions Architect
Global Dev Experts
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Özgür is based in Hamburg, Germany.
Özgür speaks the following languages: Turkish (Native), German (Advanced), English (Advanced).
Özgür has at least 20 years of experience. During this time, Özgür has worked in at least 3 different roles and for 7 different companies. The average length of individual experience is 3 years and 11 months. Note that Özgür may not have shared all experience and actually has more experience.
Based on recent experience, Özgür would be well-suited for roles such as: Senior Software Developer, Technical Team Lead, Technical Project Manager.
Özgür's most recent position is Senior Software Developer at Cubic Transportation Systems.
In recent years, Özgür has worked for Cubic Transportation Systems and Descartes Systems Group.
Özgür is most experienced in industries like Transportation, Banking and Finance, and Metals and Mining. Özgür also has some experience in Information Technology, Government and Administration, and Retail.
Özgür is most experienced in business areas like Information Technology, Operations, and Product Development. Özgür also has some experience in Quality Assurance, Supply Chain Management, and Business Intelligence.
Özgür has recently worked in industries like Transportation and Government and Administration.
Özgür has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Özgür holds a Master in Engineering and Technology Management from Çukurova University and a Bachelor in Computer Engineering from İzmir Institute of Technology.
Özgür has 3 certificates. These include: PMP (Project Management Professional), Solutions Architect, and Solutions Architect Associate.
The availability of Özgür needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 25 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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