Real clients.
Verified results.

Every project below was scoped, built, and launched in a single sprint. The numbers are client-reported and independently verified — no cherry-picking.

Logistics warehouse with automated conveyor systems and freight containers

AI Product

Logistics firmHamburg, DE

Logistics AI assistant cuts ops time by 62%

Time to launch: 4 months est.6 days
Ops time saved: 62%

6 days

A mid-size freight operator needed an internal AI tool to handle freight queries, route optimisation, and supplier communication. We built and deployed a custom GPT-4o assistant integrated with their ERP in 6 days.

"We expected a 3-month project. JA Welt delivered in 6 days and it works better than we imagined."

Klaus Brandt, COO

Full results

Time to launch: 4 months est.6 days
Ops time saved: 62%
Support tickets: 340/month89/month

Minimalist skincare product lineup displayed on white marble surface

AI Marketing

DTC skincare brandAmsterdam, NL

Inbound funnel cuts cost-per-lead from €38 to €9

Cost per lead: €38€9
Conversion rate: 1.2%4.7%

48 hours

Professional business meeting with laptops and strategy documents on conference table

Sales & BizDev

B2B consulting firmMunich, DE

Automated outbound generates €240K pipeline in 30 days

Pipeline value: €240K
Outreach volume: 20/week480/week

7 days

Modern healthcare facility with digital displays and clean medical environment

AI Product

Private clinicZurich, CH

Patient intake AI reduces admin overhead by 71%

Admin time: 4h/day42min/day
Patient satisfaction: 3.2/54.8/5

7 days

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Real clients.Verified results.