Kingstone Systems
AI systems built for the way your business actually works.
We design, deploy, and improve customer-facing AI for businesses where every conversation has an operational next step. The result is not another isolated assistant. It is a working system connected to the people, rules, and software that move the business forward.
10+ years
Software engineering experience behind our technical standard
Vapi + ElevenLabs
Official solution and commercial partners
3 industries
Production work across healthcare, mobility, and real estate
US + Croatia
English- and Croatian-language delivery
Technology partners
Notion & Apollo platform partners
How we work
From business workflow to production system.
Every engagement starts with the operation behind the conversation: what the customer needs, what the business must decide, which systems hold the truth, and when a person should take over.
01
Map the workflow
We identify the customer moment, business rules, systems, owners, and exceptions that determine a successful outcome.
02
Prove the experience
A working prototype makes the conversation, assumptions, and business value concrete before a larger implementation begins.
03
Engineer the system
We connect the required tools, define permissions and handoffs, and test the paths that matter in production.
04
Launch and improve
After launch, real usage is reviewed against agreed measures so the system can improve without losing control.
Selected results
Built around measurable operating outcomes.
Our work is evaluated in production: calls answered, quotes delivered, conversations resolved, and qualified appointments booked. Each case study explains the workflow, the result, and the boundaries that remain human.
Split, Croatia
1 in 4
of calls to this 17-doctor clinic arrive after hours or at lunch—now answered live in Croatian instead of going to voicemail.
See the case study
Hvar, Croatia
50%
of web and WhatsApp conversations get a concrete quote on the spot, with 4 in 5 resolved without a person.
See the case studyMulti-agent brokerage
Real estate
40%
of eligible leads book a showing with no agent involved—while offers and contingencies stay strictly human.
See the case study
Leadership
An engineering standard shaped by production experience.
Adhiraj is an AI engineer and operator with over a decade of software experience. He studied Computer Engineering at 
USC and previously built secure infrastructure at 
Charles Schwab used by financial professionals managing over $4 trillion in assets. At Kingstone, he defines the firm's approach to architecture, safety, and production quality. That standard guides how engagements are scoped, built, reviewed, and improved across the company.
Senior technical oversight
Architecture and delivery follow a clear engineering standard from discovery through production review.
Written operating boundaries
What the system may and may not do is documented before it goes live, not discovered after.
Human handoffs by design
Escalation to a person is built into the workflow, not a fallback for when the AI fails.
Measured in production
Success is defined against the operating result, not how impressive the demonstration looks.
Where we work
One firm across the United States and Croatia.
Kingstone serves US and international clients in English and supports Croatian businesses with local-language discovery, implementation, and ongoing operation.
Kingstone Systems · Global
United States and international
Strategy, implementation, integration, and ongoing improvement for customer-facing AI systems.
Kingstone Systems Hrvatska
Local systems, in Croatian
Croatian-language discovery, implementation, and support for businesses operating in the local market.
Visit the Croatian siteStart with the workflow
Turn one high-value customer journey into a working system.
In a working session, we will map the opportunity, identify the systems and safeguards it requires, and define a practical next step.