About me
I'm a freelance developer, and I build automation as infrastructure, not as a marketing slide. Here's who I am and what I work by.
Who I am
David Sak
Developer · co-founder of SiteSpot
I design the architecture of every deployment and run the initial audits myself. You talk to me from the very first consultation, no salesperson between you and the solution. I'm also a co-founder of SiteSpot (sitespot.cz), a studio building websites and automations for companies.
When more hands are needed, I bring in trusted specialists for data engineering, MLOps or security. I assemble capacity per project, but the responsibility for the result is always mine.
- On a project you deal directly with me, not an account manager.
- I explain technical decisions, I don't dictate them.
- A monthly report even your CFO will understand.
What I work with daily
Python
TypeScript
React
Node.js
PostgreSQL
LLM & RAG
Docker
AWS
Automation isn't a project I hand over and walk away from. It's infrastructure your company stands on.
/01
I want to understand the brief first
I don't sell solutions without a diagnosis. Until I know exactly where you're losing time and money, I have nothing to offer. That's why every collaboration starts with mapping your processes, and sometimes ends with me talking you out of automation.
/02
Your data stays yours
No data retention, no training third-party models on your documents. I deploy into private infrastructure, and after handover you own 100% of the code and intellectual property.
/03
I build on what you have
Replacing systems is my last resort, not my first offer. Middleware connects your existing CRM, warehouse and accounting, no migration, no downtime, no retraining the whole company.
/04
People handle exceptions, machines handle routine
Roughly 80% of repetitive tasks the pipeline handles on its own. The remaining 20% goes to your people, with the context of why the case deserves a human decision. I don't replace anyone, I just move the work.
/05
I measure operational impact, not impressions
Every month you get a report with numbers that hold up in front of your CFO: processing time, error rate, cost per transaction. If the numbers aren't going down, that's my problem, and I fix it.
The road so far
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Beginnings
First websites and scripts
Self-taught, I started with websites and small automations, and found out I love taking an operational problem and breaking it down into code.
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3+ years of practice
Development & automation for real
Dozens of completed projects and deployments, websites, data pipelines and integrations over real company systems.
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In parallel
A studio where we build websites and automations for companies, from design to operations.
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Today
AI agents, automation & custom websites
As a freelancer I build custom LLM agents, data pipelines and web applications, from idea to production, code and data stay with the client.
Does this match how you think about your company? Let's start with a 30-minute assessment.
Book a consultation