Case Studies · 100+ projects · 12 industries

Evidence.
Not promises.

A selection of projects from the past few years — with numbers, timelines, and the voices of the clients involved.

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completed projects
0
industries
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automated processes
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avg. client relationship
Selection · 7 of 100+

Every case a dossier of its own.

Filter by service area. Click a case for the full study with approach, data, and reflection.

Featured Case · Web Design & Careers SEO · 2024 · Mechanical Engineering
Sewamo GmbH · Heppenheim

From outdated site to digital business card.

The last relaunch was in 2014. Mobile not optimized, no top-10 keyword rankings, no careers section. In 11 weeks: a headless WordPress build with a custom theme, a clean SEO structure, and a careers section that is now the primary application channel.

+30%
Applications
4 → 5.2 / mo
−62%
Bounce Rate
71% → 27%
11 wks
Discovery → Live
Q1 → Q2 2024
MC
Web Design · 2024 · Personal Brand
Marie Casanova

A brand that sounds like her.

Personal-brand site with a sharp focus on bookings — photo series, service packages, integrated calendar.

+58%
Inquiries / mo
98
PageSpeed Score
7 wks
Duration
Web Design · 2024 · B2B Mechatronics
Lies Mechatronik GmbH

A product that needs explaining, made simple.

A complex B2B portfolio translated into a clear product architecture. SEO pillar pages targeting every relevant industry keyword.

+186%
Organic Traffic
+44%
B2B inquiries
9 wks
Duration
Web + Voice · 2024 · Local Business
Friseur Haarsache

Nobody waits for a callback anymore.

A new website with built-in online booking, plus a Voice Agent on the phone line. No more missed calls — not even mid-blow-dry.

+92%
Online bookings
0
missed calls
5 wks
Full setup
C.M.CRIS
Web Design · 2023 · Fashion & Lifestyle
C.M.CRIS

Brand, storefront, story — in a single identity.

A complete digital identity with an editorial site, lookbooks, and shop integration. Reduction as the design principle.

3.2x
Conversion
100
PageSpeed Mobile
8 wks
Duration
AUTOSCHAU 2024
Event Web · 2024 · Automotive
Autoschau Heppenheim 2024

A city event, ready to run.

An event site with exhibitor management, program builder, and live updates. A pilot year — now a fixture on the city calendar.

12k
Visitors (site)
+38%
Exhibitors vs. plan
4 wks
Setup → Launch
Web Design · 2024 · Coaching
Matthias Eichhorn · Hypnosis

Build trust without empty phrases.

A coaching site with a clear method-explainer funnel and integrated booking for free intro calls.

+71%
Free intro calls
avg. 4.9
Client feedback
6 wks
Duration
Featured · Sewamo GmbH

See the difference. Literally.

Drag the slider. On the left, the site at the start — on the right, the one live today.

// 2014
sewamo.de
Mobile · not optimized
SEO · Top-10: 0 keywords
Applications · 4 / month
// 2024 · Live
sewamo.net
Mobile-first · PageSpeed 96
SEO · Top-10: 14 keywords
Applications · 5.2 / month
Before
After
Briefing

„The website is holding us back."

A mechanical engineering SMB, 50–100 staff, full order books. The problem: no applications, no SEO visibility, no careers section. The broken pieces got mirrored back — and a clear path forward was built.

+30%
Applications
−62%
Bounce Rate
avg. 4.9
Feedback (n=18)
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Across all projects

The aggregate numbers.

What Cogswell projects deliver on average — measured across 100+ completed engagements since 2017.

avg. 0%
Efficiency gain
avg. 0 wks
Project duration
avg. 0/5
Client rating (n = 100+)
0%
Referral rate

avg. = average across all projects · Efficiency gain = (output after − output before) / output before · Referral rate = Net Promoter Score measured 90 days after go-live

Quotes

Voices from real projects.

In the first six months we got more qualified inquiries through the site than in the three years before. And the team can update content themselves now — that mattered a lot.

MB
Markus Behrens
Managing Director, Sewamo GmbH

What sold us: Cogswell didn't just deliver what was ordered — they asked, they looked closely, and sometimes they pushed back. That is exactly what made the project work.

AL
Andreas Lies
Owner, Lies Mechatronik GmbH

Within four months the Voice Agent dropped complaints about reachability to zero. And I can finally focus on the haircut instead of the phone.

SH
Sarah Heß
Owner, Friseur Haarsache
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