Software that helps your business actually grow.

We are a software studio: websites, apps, payment gateways and AI integration. Our job is to give you a product your customers love and a business you enjoy running.

  • Built for real businesses
  • Honest, hands-on team
  • Ready in weeks, not months
10,000+ customers across our clients' products
Lubomir Kalisky, founder of K. Agency LLC
Founder & Lead Engineer
Lubomir Kalisky
50+
Products launched
12
Countries served
10K+
End users
98%
Clients who stay
Where businesses lose money

The problems we are
asked to fix

Most enquiries reach us with the same handful of problems. Here is what they cost, and how each one is resolved.

Visitors arrive and leave without buying

Slow pages, unclear offers and confusing navigation quietly waste the traffic you already pay for.

A restructured page with one clear offer, a fast front end and a checkout or enquiry path that takes seconds to complete.

Payments are manual or unreliable

Invoices chased by hand, failed subscriptions never noticed, revenue recognised weeks late.

A properly implemented Stripe gateway with subscriptions, automatic receipts, dunning and a dashboard that reconciles itself.

Your team repeats the same work every day

Hours per week spent copying data between spreadsheets, inboxes and tools that do not speak to each other.

AI and automation layered onto your existing systems, so routine handling, sorting and drafting happen without a person in the loop.

The product exists, but nobody maintains it

An agency delivered, then disappeared. Small faults accumulate and confidence in the product erodes.

Direct access to the engineer who built it, with monitoring, quick fixes and steady improvement over the years that follow.

Nobody can find you in search or in AI answers

Competitors appear first, and assistants such as ChatGPT recommend them instead of you.

Technical SEO, structured data and machine readable content so both search engines and AI assistants describe your business correctly.

The site breaks on a phone

Most visitors arrive on mobile, and a broken layout costs the enquiry before a word is read.

A layout built mobile first and verified across devices, with the same speed and clarity on every screen size.

Enquiries arrive but never turn into clients

Leads sit in an inbox for days, follow up depends on memory, and interest cools before anyone replies.

Instant notifications, a simple pipeline and automated follow up so every enquiry is answered while it is still warm.

You cannot see what is actually working

Marketing spend continues without knowing which channel produces revenue and which produces noise.

Clean analytics and conversion tracking with a dashboard that shows enquiries, sales and their true source.

If any of the above describes your business today, it is fixable, and usually within weeks rather than months.

Get in touch

Reply within one business day, personally from the founder.

Capabilities

What we
do best.

One team that covers the full picture of your business online. We are with you from the first conversation about the idea, all the way through launch, and for the quiet years of improvements that follow.

Application Development

We build the kind of web apps your team can rely on every day. From SaaS products to internal tools, you get something fast, stable and easy to extend as your business grows.

  • Web applications
  • Custom dashboards
  • API integrations

UI / UX Design

Good design is what turns a visitor into a customer. We design interfaces that are easy to use, pleasant to look at and built around how your audience actually thinks and behaves.

  • Product design
  • Brand identity
  • Design systems

Security

If your product handles payments, identity or sensitive customer data, security is not optional. We help you build it the right way from day one and review what is already running.

  • Secure architecture
  • Compliance reviews
  • Authentication

Strategic Consulting

Sometimes the most valuable thing is an honest second opinion. We work alongside founders and operators on roadmaps, pricing, hiring and the hard product calls in between.

  • Discovery
  • Roadmaps
  • Tech advisory

Mobile Experiences

Most of your customers are on a phone. We make sure your product feels native there, with experiences that load fast, work offline when needed and look right on any screen.

  • Responsive web
  • Progressive web apps
  • Mobile-first design

AI Integration

AI works best when it solves a real, boring problem inside your business. We integrate it into your product or operations in ways that save your team time and improve customer experience.

  • AI assistants
  • Document intelligence
  • Workflow automation

Marketing

We help you get in front of the right people and turn that attention into revenue. Search, paid channels, email and analytics tied to numbers you actually care about.

  • SEO and content
  • Paid acquisition
  • Email and analytics

Business Operations

Behind every good product is a business that runs smoothly. We help you design the processes, automations and reporting that let you focus on growth instead of putting out fires.

  • Process design
  • Automation
  • Operations and finance

Company Formation

Setting up a company in the EU or US should not be the hardest part of your year. We coordinate incorporation, banking, compliance and registered agent services so you can focus on your product.

  • EU and US incorporation
  • Banking and compliance
  • Registered agent

One senior team covering design, build, payments and AI integration, from first conversation to long-term care.

Get in touch

Reply within one business day, personally from the founder.

Trusted by clients across Europe and the United States
GDPR compliant
EU privacy ready
Stripe secured
256 bit encryption
5 star rated
Across all products
EU and US
Cross border delivery
Reply in 1 day
From a real person
Software Development
Apps and Websites
Payment Gateways
AI Integration
UI / UX Design
Marketing
Business Operations
Company Formation
Security
Strategic Consulting
Mobile Experiences
Software Development
Apps and Websites
Payment Gateways
AI Integration
UI / UX Design
Marketing
Business Operations
Company Formation
Security
Strategic Consulting
Mobile Experiences
Software Development
Apps and Websites
Payment Gateways
AI Integration
UI / UX Design
Marketing
Business Operations
Company Formation
Security
Strategic Consulting
Mobile Experiences
Selected work

A few things we've
helped build.

A few of the public projects we have helped bring to life. Many more sit behind NDAs. Every one of them is live, looked after, and used by real people every day.

fullcv.online
Live · 2024

fullcv.online

Resume platform for modern job seekers

A free resume builder with over 100 recruiter approved templates, intelligent writing assistance, professional photos and translations into more than 50 languages. Used by over 10,000 professionals around the world to land interviews faster.

SaaSConsumerStripe
tiptrust.eu
Live · 2024

tiptrust.eu

Trusted marketplace for verified sports tipsters

One of the most transparent platforms in Europe for buying and selling sports betting tips. Every tipster is verified, results are recorded permanently, and payments are handled securely through Stripe.

MarketplaceFintechEurope
tipmistr.com
Live · 2025

tipmistr.com

Value betting analytics with a public track record

A subscription platform for data driven football predictions. Every tip is published with the full analysis, the stake the team puts behind it, and the result recorded permanently, including the losses. Payments and access run through Stripe.

SubscriptionAnalyticsStripe
justyou.sk
Live · 2025

justyou.sk

Booking and e-shop for a Bratislava beauty salon

A complete online presence for just you – beauty by Gabriello: treatment catalogue with pricing, online reservations, gift vouchers, a product e-shop and a bilingual skincare blog, all built to turn local searches into booked appointments.

Local businessBookingE-commerce

Every project above is live, maintained and used daily. Yours would be treated the same way.

Get in touch

Reply within one business day, personally from the founder.

Client voices

What our clients
say about us.

"K. Agency delivered a real platform in a few weeks instead of a year. The work is clean, the communication is honest, and they treated the project like their own business. We could not be happier."

Founder
SaaS client, Europe

"We asked them to rebuild our marketplace from scratch. Conversion went up, the codebase is something we can actually maintain, and Lubomir was reachable any time we had a question."

Operations Lead
Marketplace client, EU

"What I appreciated most was the honesty. They told us what was worth building and what was not. The features they shipped now run a big part of our daily work."

CTO
AI product client, US

Our clients stay because the work continues after launch. We would be glad to do the same for you.

Get in touch

Reply within one business day, personally from the founder.

The studio

A small team,
on purpose.

K. Agency LLC is an independent studio. We started it because we believe the best products tend to come from small teams who genuinely care about the people they are building for.

We work with founders, operators and established companies across Europe and the United States. Most of our clients come to us when they want a partner that takes quality and their customers as seriously as they do.

Quality over quantity

We work with a small number of clients each year on purpose. Every project gets our full attention from start to finish, with no junior handoffs along the way.

Honest advice

We will always tell you what is worth building and what is not. If a feature would waste your money, we will say so. The best work usually starts with a smaller scope than people expect.

Long-term partners

Most of our clients have been with us for more than three years. We care about how your business looks five years from now, not just on launch day.

If the way we work matches how you would like your product handled, let us discuss the details.

Get in touch

Reply within one business day, personally from the founder.

Founder of K. Agency LLC
Founder & CEO
Lubomir Kalisky
The founder

Lubomir Kalisky.

Founder and lead engineer.

K. Agency LLC is led by Lubomir Kalisky, a full stack engineer and product strategist with close to a decade of experience building real products in SaaS, fintech and online marketplaces.

Every project we take on is led personally, from the first call to launch day and beyond. There are no account managers in the middle and no junior handoffs. When you work with us, you work with the person actually building your product.

"We treat your business like our own."

Get in touch

Let's build
something good.

Tell us a bit about what you would like to build. We reply personally within one business day. No sales funnels, no automated replies, just a real conversation about how we can help.

Email
lubomir.kalisky@hotmail.com
Coverage
Europe & United States
Registered
K. Agency LLC