AI in plain words
Business is changing. I'll help reshape your mindset and processes so AI becomes your advantage. Less routine, more control and speed, a sharper customer focus. No buzzwords or complexity. First consultation is free.
Three ways to work together. We always start with a free consultation.
process audit
project work
personal training
Every project is scoped on a free consultation. Most work qualifies for EIS grants, so the state can cover up to 70% of the cost.
An open meetup for business owners and anyone working with AI.
Tallinn · monthly · free
Once a month we get together at Undercover. A few short talks about what actually works, plus easy conversation over coffee. Come to listen, ask a question, or show what you're building.
Estonia gives back part of the money for work we already do. Amounts for 2026.
A good fit if you need to buy and set up a ready tool: CRM, an assistant, a bot, accounting. The fastest and simplest first step.
Read more on eis.eeA fit for custom builds: AI assistants, office routine automation, working with data. Most of our projects fit here.
Read more on eis.eeA small grant to draw up a plan together with a consultant. A handy entry ticket - it's easier to apply for a bigger grant afterwards.
Read more on eis.eeFor serious projects that build their own model. Applications are prepared in advance, 2–3 months ahead.
Read more on eis.eeHalf the job is describing the project the right way so it fits the EIS criteria. I help with that.
Terms change - check eis.ee before applying. Baseline requirement: an Estonian company with 2-year average revenue of at least €50,000.
Enter a registration code - I'll show what's available to you under EIS.
This is a rough estimate. The final call is EIS's.
A short, plain-language PDF: which Estonian AI & automation grants exist in 2026 and how to qualify - no consultation required.
A free 30–40 minute consultation - by video or at my coworking space. What do you want to fix? What have you tried? Where are you stuck?
I write down what I'd do, what isn't worth doing, and what it costs. You decide if we keep going.
I implement, train, or work alongside your team. Always on your real tasks.
The result stays with you and your team. Recordings, instructions, and a month of support included.
A few words from the companies I've worked with.
"What used to take our team two days now takes ten minutes. The tool reads a tender, tells us whether it fits, and drafts the paperwork - and Sergei made sure we actually understood how it works."
Our tools
Riigi Tugiteenuste Keskus and EIS

"Based on report data analysis, reports our analysts built by hand for days are now ready in minutes, formatted to our template. The rollout was calm and practical - no hype, just working software."
Kent Hanson
Head of development, Forsta

"Our laser cutter and our accounting finally talk to each other. No more manual order entry, no more invoicing delays. Sergei found the saving and built a great solution."
Aleksei Saareväli
Head of operations, Industrial Metal

"After creating new AI tools our reporting services over all of Estonia, reports, analytics, procurement, and communication with Roads registry became much faster and more efficient. Sergei is a great partner to work with - he understands the needs of the business and finds the right solution."
Andrei Anisimov
CEO, Highway Engineering

A few projects. Real problems, real numbers.
Problem
The machine ran separately from the accounting system. Operators typed in every order by hand - which meant mistakes and delays in invoicing.
Solution
I connected the machine and the accounting system directly. Data flows on its own: jobs in, actuals back.
0
manual data entry
−40%
order-to-invoice time
~€2,100
saved per month
Problem
Analysts spent days building client reports by hand - copying, formatting, cross-checking.
Solution
A program builds the report from the client's template on its own and hands it over for review.
Minutes
instead of days
3×
more reports per person
−90%
formatting errors
Problem
One tender is 50–200 pages of text. Reading and preparing it took days.
Solution
A tool reads the tender documents, checks whether it fits the company, and drafts the paperwork.
10 min
tender review (was 2 days)
100-pt
automatic scoring
80%
docs drafted on their own

Sergei Zahharenko
I help businesses tidy up processes and put AI to work
Tallinn, Estonia
View LinkedIn profileI'm Sergei Zahharenko. For over 20 years I've built software for all kinds of companies and corporations. Fintech, sales, and real manufacturing.
20+
years in development
20+
AI & automation projects
5
industries
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