Özgür Ertekin - Senior Software Developer

Q: Where is Özgür based?

Özgür is based in Hamburg, Germany .

Q: What languages does Özgür speak?

Özgür speaks the following languages: Turkish (Native), German (Advanced), English (Advanced) .

Q: How many years of experience does Özgür have?

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.

Q: What is Özgür's latest experience?

Özgür's most recent position is Senior Software Developer at Cubic Transportation Systems .

Q: What companies has Özgür worked for in recent years?

In recent years, Özgür has worked for Cubic Transportation Systems and Descartes Systems Group .

Q: Which industries is Özgür most experienced in?

Özgür is most experienced in industries like Transportation and Logistics , Banking and Finance , and Metals and Mining . Özgür also has some experience in Information Technology (IT) , Government and Public Administration , and Retail .

Q: Which business areas is Özgür most experienced in?

Özgür is most experienced in business areas like Information Technology (IT) , Operations , and Product Development . Özgür also has some experience in Quality Assurance (QA) , Supply Chain Management , and Business Intelligence .

Q: Which industries has Özgür worked in recently?

Özgür has recently worked in industries like Transportation and Logistics and Government and Public Administration .

Q: Which business areas has Özgür worked in recently?

Özgür has recently worked in business areas like Information Technology (IT) , Product Development , and Quality Assurance (QA) .

Recommended expert

Hamburg, Germany

Experience

Nov 2023 - Dec 2024

1 year 2 months

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 months

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 months

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 months

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.

Sep 2012 - Jul 2016

3 years 11 months

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.

Aug 2009 - Sep 2012

3 years 2 months

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.

Apr 2004 - Aug 2009

5 years 5 months

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.

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Transportation (7 years), Banking and Finance (6.5 years), Metals and Mining (5.5 years), Information Technology (4 years), Government and Administration (1 year), and Retail (0.5 years).

Transportation

Banking and Finance

Metals and Mining

Information Technology

Government and Administration

Retail

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (20.5 years), Product Development (9 years), Operations (9 years), Quality Assurance (7 years), Supply Chain Management (5.5 years), and Business Intelligence (3.5 years).

Information Technology

Product Development

Operations

Quality Assurance

Supply Chain Management

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

Turkish

Native

German

Advanced

English

Advanced

Education

Oct 2005 - Jun 2007

Çukurova University

M.Sc. in Engineering and Technology Management · Engineering and Technology Management · Adana, Turkey

Oct 1999 - Jun 2003

İzmir Institute of Technology

B.Sc. in Computer Engineering · Computer Engineering · İzmir, Turkey

Certifications & licenses

PMP (Project Management Professional)

PMI

Solutions Architect

Global Dev Experts

Solutions Architect Associate

AWS

Profile

Created

November 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Özgür based?

Özgür is based in Hamburg, Germany.

What languages does Özgür speak?

Özgür speaks the following languages: Turkish (Native), German (Advanced), English (Advanced).

How many years of experience does Özgür have?

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.

What roles would Özgür be best suited for?

Based on recent experience, Özgür would be well-suited for roles such as: Senior Software Developer, Technical Team Lead, Technical Project Manager.

What is Özgür's latest experience?

Özgür's most recent position is Senior Software Developer at Cubic Transportation Systems.

What companies has Özgür worked for in recent years?

In recent years, Özgür has worked for Cubic Transportation Systems and Descartes Systems Group.

Which industries is Özgür most experienced in?

Özgür is most experienced in industries like Transportation and Logistics, Banking and Finance, and Metals and Mining. Özgür also has some experience in Information Technology (IT), Government and Public Administration, and Retail.

Which business areas is Özgür most experienced in?

Özgür is most experienced in business areas like Information Technology (IT), Operations, and Product Development. Özgür also has some experience in Quality Assurance (QA), Supply Chain Management, and Business Intelligence.

Which industries has Özgür worked in recently?

Özgür has recently worked in industries like Transportation and Logistics and Government and Public Administration.

Which business areas has Özgür worked in recently?

Özgür has recently worked in business areas like Information Technology (IT), Product Development, and Quality Assurance (QA).

What is Özgür's education?

Özgür holds a Master in Engineering and Technology Management from Çukurova University and a Bachelor in Computer Engineering from İzmir Institute of Technology.

Does Özgür have any certificates?

Özgür has 3 certificates. These include: PMP (Project Management Professional), Solutions Architect, and Solutions Architect Associate.

What is the availability of Özgür?

Özgür is immediately available full-time for suitable projects.

What is the rate of Özgür?

Özgür's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.