Adnan Y.-Software Engineer, Architect & Technical Leader
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Experience
Software Architect
Machinarium
- Designing the software architecture for a cryptocurrency trading platform.
- Building backend services and core trading components.
Software Engineering Manager (AI)
Quality Museum
- Founding engineering member of the startup; shaping both product and technical direction.
- Designing and building agentic AI products on top of OpenAI, Anthropic, Open AI, Claude Code, Codex, and Computer Use.
- Developing full-stack apps with .NET Core, Python, React.js, React Native, Angular, PostgreSQL, SignalR, Hangfire, and Redis.
- Developing native desktop agents for Windows and macOS.
- Developing native desktop agents for Android and iOS.
- Leading the software architecture and supervising the day-to-day development process.
Chief Technology Officer
Eçözüm Bilgi Teknolojileri
- Led software development, support, QA, analysis, and IT (network and server) teams.
- Defined the engineering process and the company-wide development guidelines.
- Drove the architectural transformation from a monolithic system to microservices.
- Led the Agile transformation, adopting SCRUM and Kanban across delivery teams.
- Led the PCI DSS certification programme and the related infrastructure overhaul.
- Established and managed the Secure Software Development Life Cycle (SSDLC).
- Worked across MSSQL, NoSQL stores, caching, and message-queueing systems.
- Identified and resolved design and performance bottlenecks across the platform.
- Built the team: interviewed, hired, and developed engineers; owned the technology budget and procurement.
Software Development Manager
Inorama
- Analysed, designed, and delivered an online food-ordering platform.
- Built several e-commerce stores for B2C clients.
- Developed a marketing system for Herbalife.
Software Developer
Nokia Siemens Networks
- Analysed and developed a mobile cell-device monitoring system.
- Built XML-to-Oracle data ingestion pipelines.
Software Development Manager
Mavi Otomasyon
- Designed and developed a hospital information system end to end.
- Led the software development team and translated client needs into delivered features.
- Administered Oracle and Sybase databases; addressed design and performance bottlenecks.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Healthcare, Food and Beverage, Retail, Telecommunication, and Banking and Finance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Procurement, and Quality Assurance.
Summary
I design and develop backend systems, software architectures and complete technology solutions, with experience across fintech, e-commerce, healthcare, telecommunications and AI. I work with .NET, PostgreSQL, MSSQL, NoSQL databases, caching and queueing systems, and have led the transformation of monolithic applications into microservices.
I have managed software development, support, analysis, testing and IT teams, while defining development processes and supervising architecture and delivery. I also build AI agents with OpenAI, Anthropic and Computer Use, develop desktop agents for Windows and macOS, and bring practical knowledge of PCI DSS, secure software development, Agile, Scrum and Kanban.
Skills
Ai & Emerging
- Ai Agents
- Agentic Ai
- Openai
- Anthropic
- Codex
- Claude Code
- Computer Use
Payments & Fintech
- Credit Card Payments
- Online Payments
- Open Banking
- E-Commerce
- Pci Dss
Leadership & Process
- Product Management
- Agile (Scrum, Kanban)
- Software Development
- Software Design
- Software Architecture
- Secure Software Design
- Ssdlc
- Microservices
- Full-Stack Software Development
- Back-End Software Development
- Front-End Software Development
Backend
- C#
- .Net Core
- Asp.Net Mvc
- Python
- Entity Framework
- Wcf
- Rest
- Soap
- Signalr
- Hangfire
- Powershell
Frontend
- React.Js
- React Native
- Angular
- Javascript
- Jquery
- Ajax
Data & Infra
- Mssql
- T-Sql
- Oracle
- Pl/Sql
- Postgresql
- Nosql
- Redis
- Rabbitmq
- Elk
- Sybase
- Ms Access
- Sql
- C++
Tools & Security
- Jira
- Confluence
- Power Bi
- Fortify
- Netsparker
Languages
Education
Ruhr University Bochum
MSc · IT Security · Bochum, Germany
Boğaziçi University
BSc · Computer Engineering · Istanbul, Turkey
Certifications & licenses
Agile Project Management Methodology
DSH (German university entrance examination)
Fintech 101 Training
IIBA Business Analysis Modeling Techniques and Software Testing
Information Security Awareness Training
Proficiency in English
Secure Code Development
Secure Code Development Training
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Adnan is based in İstanbul, Turkey and prefers 100% remote projects.
Adnan speaks the following languages: Turkish (Native), German (Advanced), English (Advanced), Greek (Intermediate).
Adnan has at least 30 years of experience. During this time, Adnan has worked in at least 5 different roles and for 6 different companies. The average length of individual experience is 5 years. Note that Adnan may not have shared all experience and actually has more experience.
Based on recent experience, Adnan would be well-suited for roles such as: Software Architect, Software Engineering Manager (AI), Chief Technology Officer.
Adnan's most recent position is Software Architect at Machinarium.
In recent years, Adnan has worked for Machinarium, Quality Museum, and Eçözüm Bilgi Teknolojileri.
Adnan is most experienced in industries like Information Technology, Healthcare, and Food and Beverage. Adnan also has some experience in Retail, Telecommunication, and Banking and Finance.
Adnan is most experienced in business areas like Information Technology, Product Development, and Procurement. Adnan also has some experience in Quality Assurance.
Adnan has recently worked in industries like Information Technology and Banking and Finance.
Adnan has recently worked in business areas like Information Technology, Product Development, and Procurement.
Adnan attended Ruhr University Bochum for IT Security.
Adnan has 10 certificates. Among them, these include: Agile Project Management Methodology, CISSP Training, and DSH (German university entrance examination).
Adnan is immediately available full-time for suitable projects.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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