I am Mustafa Ersoy, a full-stack software engineer and technical founder based in Kayseri, Turkey. I bring 4+ years of professional experience and a 12-year background in software development. I co-founded DuoSoft and led the company for 3 years — owning the full product life cycle from architecture and development to DevOps, team management, and client delivery. I have a strong track record of working independently, shipping products fast, and integrating AI/LLM technologies into real-world products. I served as an Engineering Officer at the Turkish Ministry of National Defence. I’m actively leveraging AI coding tools like Copilot and Claude to accelerate development. I’m open to remote opportunities.

Mustafa Ersoy

I am Mustafa Ersoy, a full-stack software engineer and technical founder based in Kayseri, Turkey. I bring 4+ years of professional experience and a 12-year background in software development. I co-founded DuoSoft and led the company for 3 years — owning the full product life cycle from architecture and development to DevOps, team management, and client delivery. I have a strong track record of working independently, shipping products fast, and integrating AI/LLM technologies into real-world products. I served as an Engineering Officer at the Turkish Ministry of National Defence. I’m actively leveraging AI coding tools like Copilot and Claude to accelerate development. I’m open to remote opportunities.

Available to hire

I am Mustafa Ersoy, a full-stack software engineer and technical founder based in Kayseri, Turkey. I bring 4+ years of professional experience and a 12-year background in software development. I co-founded DuoSoft and led the company for 3 years — owning the full product life cycle from architecture and development to DevOps, team management, and client delivery.

I have a strong track record of working independently, shipping products fast, and integrating AI/LLM technologies into real-world products. I served as an Engineering Officer at the Turkish Ministry of National Defence. I’m actively leveraging AI coding tools like Copilot and Claude to accelerate development. I’m open to remote opportunities.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
See more

Language

Turkish
Fluent
English
Advanced

Work Experience

Software Lead & Co-Founder at DuoSoft
January 1, 2023 - March 1, 2026
Designed and delivered 10+ end-to-end projects for 10 clients across logistics, education, legal, fintech, and other industries — covering SaaS, mobile apps, and AI products. Led a team of 7–10 developers and QA; coordinated sprint planning, task delegation, and delivery timelines; owned the full product lifecycle including a serverless DevOps pipeline and cloud infrastructure.
Frontend Developer (Contractor) at Tenders
May 1, 2025 - October 1, 2025
Built a Transportation Management System (TMS) from scratch; led UI/UX design and front-end architecture; delivered the project fully remotely within the scope.
Software Engineer & Analyst at Ekip Co
June 1, 2022 - January 1, 2023
Built back-end systems for an algorithmic crypto trading platform; implemented data scraping from TradingView and exchange integrations with Binance API; contributed to project planning and mentoring junior developers.
Engineering Officer (2nd Lieutenant) at Turkish Ministry of National Defence
July 1, 2021 - June 1, 2022
Completed mandatory military service as an Engineering Officer; gained direct experience working with defense-sector companies.
Software Engineer at Bitall
July 1, 2020 - January 1, 2021
Built a cross-platform mobile app (iOS & Android) using Flutter; adopted by 65+ business customers across Turkey and published on the App Store and Google Play.
Freelance Software Developer at Self-employed
January 1, 2016 - July 1, 2017
Delivered small- to medium-sized software projects for clients across various platforms and industries.
Freelance Software Developer at Self-employed
January 1, 2021 - July 1, 2021
Delivered software projects for clients across platforms and industries.

Education

BSc Computer Engineering at Firat University
January 1, 2016 - January 1, 2020

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Transportation & Logistics, Education, Financial Services