Cologne e-commerce agency since 1999 offering shop builds, SEO, Google Ads and growth partnerships
About RESPONSE GmbH
RESPONSE GmbH is an owner-managed e-commerce agency at Neusser Landstraße 80 in Cologne. It has been working since 1999. Léon Hüls and Torsten Sieland are the managing directors. Sieland previously ran the online retailer Beamer-Discount, which reached about 20 million euros in yearly revenue at its peak. The team has eleven named people, including backend and frontend developers, a systems specialist and trainee media designers, within an 11 to 50 employee range.
Most of the agency's work involves building and improving online shops on Shopware, Shopify, OXID and JTL. SEO and e-commerce each make up about 30% of the work, with smaller shares for conversion optimisation, analytics, lead generation, email and affiliate marketing. Marketing services include SEO, local and link-building SEO, Google Ads, newsletter marketing and generative engine optimisation. The team also writes custom plugins, modules and interfaces, and is a Shopware Bronze and Extension Partner, with partner status since 2018.
The agency offers three ways to work together. In the classic model it carries out projects to a goal set by the client. In e-commerce mentoring the client's own team does the work with expert input on key decisions. In the growth partnership, payment is tied to performance and responsibility is shared. New enquiries start with a free 15-minute call. The agency's free maturity checks for usability, e-commerce and growth levers, plus a performance audit, help set priorities. The agency decides which measures are worth the budget before starting work, and it promises fixed contacts and transparent billing.
The agency's main dental link is dentona AG, a dental technology company in Dortmund. Dentona is a manufacturer, not a practice. RESPONSE moved dentona's shop from Shopware 5 to Shopware 6, with 20% more conversions, a 17% lower bounce rate, 30% longer time on site and doubled visibility. This makes the agency most relevant to dental suppliers, labs or practices that sell products online. It has no published work for dental surgeries.
It has 5.0 on Feedbax from 22 reviews and 5.0 from 18 Google reviews. Reviewers highlight quick and straightforward communication, help with plugin and module installation, and technical reliability. Several have worked with the agency for many years, one for more than a decade. Feedbax named it a 2026 top provider for Shopware and Google Ads.
Its credentials include Google Partner status, Trusted Shops Qualified Expert, OXID eSales Solution Partner and a recommendation from IT-Recht Kanzlei. Prices depend on scope. The minimum budget is above 1,000 euros. The team speaks German, English, Greek and Dutch.
RESPONSE GmbH's Website
RESPONSE GmbH at a Glance
| Founded | 1999 |
|---|---|
| Team size | 11-50 employees |
| Headquarters | Cologne, North Rhine-Westphalia, Germany |
| Leadership | Léon Hüls (Managing Director); Torsten Sieland (Managing Director) |
| Languages | German; English; Greek; Dutch |
| Pricing | Minimum budget above EUR 1,000; prices depend on scope; performance-based growth partnership available. |
| Contracts & reporting | Three engagement models: classic agency service, e-commerce mentoring, or performance-based growth partnership; free 15-minute initial call; roadmap with priorities and effort estimates; fixed contacts; regular project updates and reporting. |
| Tools & partnerships | Google Partner; Shopware Bronze and Extension Partner (since 2018); OXID eSales Solution Partner; Shopify; JTL; Trusted Shops Qualified Expert; Channable connector (own plugin); IT-Recht Kanzlei recommended partner |
Dental Marketing Services
- Online shop build and relaunch (Shopware, Shopify, OXID, JTL)
- SEO
- local SEO
- link building
- Google Ads
- generative engine optimization
- conversion and usability optimization
- tracking and analytics
- newsletter marketing
- custom plugins and interfaces
- maintenance and support
Dental Clients & Results
- dentona AG: +20% conversions, -17% bounce rate, +30% time on site, +100% visibility after Shopware 5 to 6 relaunch
Dental Practices They Have Worked With
- dentona AG (Dortmund dental technology company, not a practice)
Why Dentists Choose RESPONSE GmbH
- E-commerce specialists
- 30% of work is SEO
- Flexible engagement levels
- 22 reviews at 5.0
- Performance-based growth option
Key Strengths
- Improves conversion on practice sites so more visitors book appointments
- Prioritises practice site improvements by likely impact on bookings, then measures results
- Sets up tracking, analytics and reporting on a practice's online enquiries
- Builds custom interfaces and plugins connecting practice websites to other systems
Awards & Recognition
- Feedbax Top-Anbieter 2026 (Shopware)
- Feedbax Top-Anbieter 2026 (Google Ads)
How the DSA Score Breaks Down
Points earned: 44.5 of 100 (profile 37 × 0.8 + client feedback 14.9). DSA Score: 89/100
What Clients Say About RESPONSE GmbH
- 4 on Google
Clients Most Often Praise
- Communication & responsiveness 1
- Understanding of dentistry 1
In ShortReviews focus on e-commerce/shop module support: fast, friendly, knowledgeable help and quick communication.
BPM Pro Shop says communication is fast and uncomplicated and the results speak for themselves.
See it on feedbax.aiDominik Schacht found the support team friendly, knowledgeable and professional.
See it on feedbax.aiDaniel Wazynski praises very fast, effective support installing and setting up their module.
See it on feedbax.aiShow 1 more client review
- Florian Nast highly recommends the agency for e-commerce. Google, May 2026
Where RESPONSE GmbH Is Listed
Questions Dentists Ask About RESPONSE GmbH
Does RESPONSE GmbH work with dentists?
Its dental reference is dentona AG, a dental technology company, for which it rebuilt an online shop. It has no published work for dental practices.
How much of its work is SEO?
SEO makes up about 30% of its work, alongside 30% e-commerce. It also offers local SEO, link building, Google Ads and GEO.
Can I pay based on results?
Yes. Besides classic project work and mentoring, the agency offers a performance-based growth partnership with shared responsibility for growth.
What results has it published?
After relaunching dentona AG's shop on Shopware 6, it achieved 20% more conversions, a 17% lower bounce rate, 30% longer visits and doubled visibility.
How do I start?
The agency offers a free 15-minute introductory call and free maturity checks. It then provides a prioritised roadmap with effort estimates.
Reviews of RESPONSE GmbH
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