dogan-ucar.de

What It Is

Doğan Uçar is a senior freelance software engineer based in Frankfurt, Germany, and the founder of Ucar Solutions UG. Rather than being a traditional standardized developer tool, he is a senior technical consultant and developer offering deeply customized services. His core expertise lies in enterprise-grade backend development within the PHP and Symfony ecosystem, legacy system modernization, and business integration of AI capabilities.

Core Dimension Analysis

• Features and Use Cases: He primarily offers four categories of services: legacy system modernization (such as upgrading PHP 4/5/7 to PHP 8, migrating Zend to Symfony, and splitting monoliths into APIs), AI and LLM integration (connecting large language models to existing PHP/Symfony applications for automation and insight analysis), SaaS and platform development (including subscription models, access control, and more), and DevOps infrastructure setup. He also provides AI code review services.
• Supported Languages/Frameworks: He is deeply focused on the PHP 8.x and Symfony (6/7/8) ecosystem, with strong experience in API Platform, Laminas, Laravel, and related technologies. On the frontend, he has worked with React, Vue, and others. In AI and data, he is familiar with Python, ML, and NLP, while his infrastructure experience covers Docker, Kubernetes, AWS, and more.
• Open Source and Ecosystem: He has his own open-source projects, such as the password manager Keestash and the algorithm library PHPAlgorithms, as well as a commercial SaaS product, DMARCFlow. This demonstrates not only theoretical depth but also the ability to deliver production-grade engineering. In terms of integrations, he has experience connecting with major e-commerce and cloud platforms such as Shopify, SCAYLE, and Nextcloud.

Pricing

The website does not disclose specific pricing or hourly rates. Quotes and availability must be requested via email or phone. This is consistent with the common model for senior freelancers, where pricing is typically negotiated based on project complexity and contract duration.

Pros and Cons

• Pros: Over 10 years of enterprise-level hands-on experience, with clients including major companies such as CHECK24 and HPE; strong at progressive legacy system refactoring with “no downtime and no big-bang rewrite,” showing a strong awareness of risk control; combines an academic background with a master’s degree in intelligent systems and practical engineering delivery, enabling him to turn AI into real business value rather than isolated demos.
• Cons: As an individual freelancer, he cannot take on massive projects that require large teams working in parallel; his tech stack is highly concentrated around PHP/Symfony, so support for non-PHP projects is limited; pricing is not transparent, which increases the cost of initial communication.

Who It’s For

Best suited for European and U.S. companies with complex legacy PHP codebases that urgently need system modernization or want to integrate AI/LLMs into existing business workflows. It is especially suitable for medium to large enterprises that cannot afford downtime risks and need incremental refactoring and architectural guidance.

Access from China

Unknown. As the personal website of a German developer, it is usually expected to be directly accessible, but actual access may vary depending on server network conditions and should be tested in practice.