Services for small and medium-sized businesses.
Custom software, automation, AI agents and websites. Each service has its own page with the process, the price and answers to common questions. If you're not sure which one fits, tell me what you still do by hand and I'll tell you in a free consultation.
Ing. Patrik Krajňák, Full-stack developer, Košice
Custom software
ERPs, CRMs, internal systems, web and mobile apps for companies that have outgrown Excel or an off-the-shelf tool. I build the system around how your company really works and connect it to the software you already use.
- Custom software developmentCustom software from Košice: ERP, internal systems, web and mobile apps, integrations. Experience at U.S. Steel and GymBeam. Free prototype before you order.
- Custom CRMA custom CRM puts clients, quotes and contracts in one database. For the tax firm DAU, I wrote the CRM's security layer and rebuilt its client portal.
- Custom ERPCustom ERP for manufacturers, wholesalers and service firms: stock with phone scanning, production planning, attendance, reports. Start from €500.
- Moving to a new systemMoving off Excel, Access, legacy PHP or from FIBU or OMEGA to POHODA: export, mapping, a trial run, opening balances and a trial balance check after transfer.
- Booking systemOnline booking system for your website, connected to Google Calendar or Outlook: free slots, Google Meet invites and spam protection. Live on pkrajnak.sk.
Automation and integrations
Invoicing, receipts, inquiries, orders and morning reports: a system takes over the repetitive work that costs you hours every week. I connect your website, online store, CRM, warehouse and accounting software so nobody has to retype data by hand.
- Business process automationBusiness process automation for small and mid-sized companies: invoices, documents, quotes, orders, stock, attendance and reports. One process from €500.
- System integrationI connect your website, online store, CRM and inventory to Pohoda, Money, KROS or ABRA Flexi, with retries, logs and error alerts. Usually from €500.
- Document data extractionInvoice and receipt data extraction into Pohoda, Money and KROS, with checks on totals, VAT, duplicates and company IDs. A person reviews unclear cases.
- Document automationQuotes, contracts, orders and handover reports from Word or Google Docs templates: company data by ID, PDF and e-signature, sent from your inbox. From €500.
AI agents and a knowledge assistant
I can take the work someone on your team does every morning and hand it over to an AI agent. I build it to know when to act on its own and when to flag something for you. A knowledge assistant answers questions from your contracts, procedures and meeting notes, and shows the source with every answer.
- AI agents for businessCustom AI agents process emails, orders and documents using fixed rules, and a person approves any step involving money. The consultation is free.
- AI knowledge assistantAn internal AI chatbot that answers staff questions from your contracts, procedures and meeting notes, with sources and access rights. Free prototype.
Websites and UX design
I've enjoyed building websites since secondary school, and at TUKE both my bachelor's and master's theses focused on UI and UX. I redesign websites so people find their way around straight away, pages load fast and both Google and ChatGPT can find them. My own site scores 100 for accessibility and SEO in Lighthouse.
- Website redesignUX-focused website redesign: audit, clickable prototype, mobile speed, accessibility, SEO, GEO and lead tracking. My own site: SEO 100 in Lighthouse.
- SEO and GEO auditSEO and GEO audit: Search Console, technical checks, your customers' questions in ChatGPT, Gemini and Perplexity, Google Business Profile and tracking.
AI training and consulting
A tool nobody uses is just another invoice. I set AI up for your team's real tasks, train people to work with it and write down the rules for what it may and may not do. I've also taught web development and UI/UX at a vocational IT school in Košice. A 4-hour training session starts at €600.
Contact
Tell me what you still do by hand.
A few lines about the process that slows you down or the system you need are enough. Within eight hours I'll get back to you on whether and how it can be built, and if it makes sense, we'll set up a short call.
Prefer email or phone?
patrik.krajnak.dev@gmail.com +421 950 625 466
I reply within 8 hours. Based in Košice, Slovakia (CET), working remotely
Calls on Google Meet: Monday to Thursday 7:00 to 20:00, Friday until 18:00. Weekends by arrangement.
I use your details only to reply and to arrange the call. Privacy policy