Germany
Detartech is a software company whose Istanbul team builds web platforms, backend systems and SEO for companies in Germany. Istanbul is two hours ahead in winter and one hour ahead in summer, so most of the working day is shared; the working language is English, and every system that processes personal data is designed with the GDPR (DSGVO) in mind. For our German client Tegoly we delivered new modules, performance work and SEO improvements on its digital signature platform.
At Tegoly we added new screens to the React front end along with digital signature, document management and integration modules. For a product in Germany we decide on multilingual architecture, type safety and content management up front. Technical documentation and handover documents are written in English.
View serviceAt Tegoly we worked on meta descriptions, content adjustments and technical SEO improvements. On a site that publishes in several languages, hreflang and indexing have to be set up so that no new release breaks them. We do not promise rankings; we build the measurement and technical foundation as a system.
View serviceAt Tegoly we improved page load times with cache mechanisms and tuned server configuration on Azure. For us, scaling is not about adding servers but about measuring the bottleneck first. The database, caching and migration plan are designed so that every step can be rolled back.
View serviceFor a German start-up's first release, the validation question, scope and acceptance criteria are written down in English. If personal data will be collected, GDPR requirements enter the scope from day one. Progress stays visible on a test environment, and the code remains yours.
View serviceA first scan of an app written with AI tools turns up almost the same three things every time: an admin screen reachable without authentication, a hardcoded key and an unvalidated input. Holes close to GDPR-covered user data are closed first, and each fix arrives as its own pull request with an English explanation.
View serviceWe develop iOS and Android apps with one team using Flutter and React Native. If a German interface is needed, the multilingual structure is built in from the start and how the copy is produced is agreed in the project plan; the store accounts remain yours.
View serviceWhen connecting LLM and agent systems to your product, we define up front, from a GDPR perspective, which personal data may go to the model. In RAG and document automation projects we work with measured accuracy and report the results in English.
View serviceAn AI engine decides for itself which language version of a multilingual site it picks as a source. With llms.txt, structured data, E-E-A-T signals and a robots.txt policy we make your site quotable; visibility cannot be guaranteed.
View serviceOn your own server we run the pipeline that carries Meta and LinkedIn leads into the CRM and returns each sales result via the Conversions API. Since lead data never touches a third-party SaaS provider, the GDPR documentation can describe its full route as part of the architecture.
View serviceWe set up the pipeline, environment and secret management, containers and observability, and document every decision in English. The hosting region is chosen up front with the GDPR in mind, and every release has a written rollback step.
View serviceAt Tegoly we kept developing on the existing MSSQL and Azure setup without replacing it; in technology choices our default answer is not to change a system that already works. Architecture decision records, the technical debt inventory and vendor evaluations are written in English, and which country the data sits in is recorded with the GDPR in mind.
View serviceSeen from Germany, Istanbul is a nearby option that can share the same working day. Istanbul uses UTC+3 all year, while Germany is on CET (UTC+1) in winter and CEST (UTC+2) in summer. Istanbul is therefore two hours ahead in winter and one hour ahead in summer. A 09:00 start in Germany is 10:00 or 11:00 in Istanbul, so daily stand-ups and shared working hours fit comfortably into both teams' days.
The process is designed for remote collaboration. The discovery meeting can be online or in person, followed by a technical architecture proposal and a project plan. Development moves in two-week sprints, and every sprint ends with a working demo. Progress is tracked on a Jira or Linear board, with a weekly status meeting and a sprint report.
Our communication tools, project management and documentation run in Turkish and English. In projects with German companies the shared language is English: meetings, sprint reports, technical documentation and handover documents are prepared in English. If your product needs a German interface, the multilingual architecture is planned for it from the start, and how the German copy will be produced is agreed in the project plan.
In Germany, every system that processes personal data falls under the EU General Data Protection Regulation (GDPR, known in German as DSGVO). In practice this means concrete questions to answer at the architecture stage:
The legal assessment and documents such as a data processing agreement are settled with your legal adviser. Our job is to implement those decisions correctly in the code, the infrastructure and the access permissions. On the Turkish side, where our team works, KVKK applies; we have experience with projects that have to respect both frameworks.
Our client in Germany, Tegoly, runs a digital signature and business process platform aimed at the global market. The system worked, but it needed new screens to improve the user experience, some integration gaps closed and more visibility in search engines.
The stack was .NET Core, React, MSSQL, MongoDB and Azure. Taking over a live product and developing it further needs a different discipline from starting fresh: we begin with a technical analysis and a code quality review, share the risks and the development plan in writing, and plan changes so that they do not disrupt live users.
Making this decision on cost alone leaves out what matters most: shared working hours, the working language, familiarity with the data protection framework and who owns the code after delivery. With us, full ownership of the source code passes to you on delivery, and the transfer is written explicitly into the contract. You can choose between a fixed-price project and a time and materials model; the price is sent as a written proposal based on your scope after the discovery call. Thirty days of post-launch support are included.
Wherever you are, the first meeting is free, online or in person.
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Germany