Hakan Kaymaz
Technology Expert|Senior .NET Engineer
Salary / Daily rate
İstanbul, Türkiye
Mobility: Paris
Freelance, open to permanent contract
Can come onsite
Skills
About me
Intro
Senior .NET Engineer with 15+ years developing enterprise applications for global companies like Ford and Ericsson. Led projects deployed in 300+ airports worldwide and delivered solutions reducing operational time by 45%. Expert in C#, ASP.NET, microservices, and Azure with proven track record in technical leadership and rapid project delivery.
Work experience
Turkish Technology
Sep 2023 - Present
3 years 2 months
Technology Expert
Oct 2024 - Present
2 years 1 month
• Strengthened baggage security by optimizing baggage label arrangements. • Enhanced system performance, speed, and accessibility at station-level applications. • Reduced information overload by implementing a structured information system at stations.
Senior Software Engineer
Sep 2023 - Oct 2024
1 year 2 months
İstanbul, Türkiye
• Developed and maintained Departure Control Systems (DCS) applications supporting Check-in Operations.. • Designed and implemented a web-based counter check-in application used in 300+ airports worldwide. • Led software testing, DevOps, and release processes, ensuring high performance and reliability. • Conducted code reviews and mentored the developer team, improving code quality and best practices.
Senior Software Engineer
FreelanceFreelance
Apr 2023 - Oct 2023
7 months
• Developed and optimized projects using .NET technologies including ASP.NET, C#, MVC, and Entity Framework.
KoçSistem
Jul 2017 - May 2023
5 years 11 months
İstanbul, Türkiye
Senior Software Development Consultant
Dec 2021 - May 2023
1 year 6 months
İstanbul, Türkiye
• Designed, developed, and implemented back-end features for the Ford IDA Project using C#, MVC, jQuery, Bootstrap, and REST API. • Delivered the Warranty Module 4 months ahead of schedule, improving operational efficiency. • Led the RS Fleet Sales Project, reducing dealer operation time by 45% through automation. • Launched an after-sales billing module with full data migration within 1 month. • Designed and implemented the Service and Maintenance Module, delivering it to dealers within 7 months. • Provided mentorship and technical guidance to junior developers, fostering growth.
Software Development Consultant
Jul 2017 - Dec 2021
4 years 6 months
İstanbul, Türkiye
• Contributed to the Ford IDA Project in the R&D and Business Applications Department. • Applied C# and MVC design patterns to enhance project maintainability and scalability. • Implemented a Retail Sale and ConnecTruck Module, enabling truck sales to corporate customers via a Web API. • Developed the Extended Warranty Module, allowing corporate customers to upgrade their warranties. • Built the Service Contract Module, enabling customers to buy service and maintenance packages.
Software Engineer
Ericsson
Nov 2016 - Jul 2017
9 months
İstanbul, Türkiye
• Created technical documentation to onboard and train newly hired employees. • Defined clear project specifications based on customer requirements, ensuring smooth execution. • Contributed to the CRM project, focusing on both development and design.
Software Development Specialist
Freelance
Jul 2013 - Dec 2016
3 years 6 months
• Developed and integrated .NET-based applications using ASP.NET, C#, MVC, and JavaScript. • Enhanced applications by redesigning UI/UX and incorporating new features. • Managed database operations using Microsoft SQL Server and Oracle. • Conducted project reviews with clients, gathering feedback and implementing improvements iteratively.
Software Development Specialist
KocSistem
Sep 2011 - Dec 2012
1 year 4 months
• Worked as a Software Development Specialist in the R&D and Business Applications Department on the Vodafone Web Order Project. • Developed and maintained enterprise web applications to enhance business operations. • Designed and implemented Vodafone Web Order Website, ensuring seamless user experience. • Contributed to multiple digital transformation projects, including Vodafone Kırmızı Bulut, Tibco Layer, THK, Office365, and Cut To Cord. Key Projects: • FB Ülker Sports Arena Pixage Application – Led application management for digital signage solutions. • KoçSistem Internal Websites – Managed and administered all internal web portals. • KoçSistem Portal Development – Developed and enhanced the corporate portal for internal use. • Vodafone Web Order Project – Built and optimized a web-based order management system.
Yazılım Geliştirme Uzmanı
KoçSistem
Sep 2011 - Dec 2011
4 months
Worked in the R&D and Business Applications Department as a Software Development Specialist on internal projects.
trainee
Turkish Airlines
Jul 2011 - Aug 2011
2 months
İstanbul, Türkiye
• EBOS (Education Directorate Automation System), which the used presidency of Education software is required on top of our responsibility in the program update, was made to work in the care and support issues.
Education
Sakarya University
Bachelor of Engineering - BE
2007 - 2011
4 years
Zonguldak Devrek Anatolian High School
Licenses & certifications
Lead Remood
Issued: Jan 2023
İletişim Teknolojileri ve Toplum
Issued: Jan 2018
Yönetim ve Organizasyon
Issued: Jan 2018
İş Hayatına Hazırlanıyorum 1 (Yazılı İletişim Teknikleri, İletişimde Ben de Varım, Telefonda İletişim)
Issued: Aug 2014
KoçKariyer- İş Hayatına Hazırlanıyorum 3 ( Başarı ve Sonuç Odaklılık, Çalışanlar İçin Stres Yönetimi, Zaman Yönetimi, Problem Çözme Teknikleri)
Issued: Aug 2014