OI Systems
OI Systems · Software & AI engineering · Switzerland
OI Systems is the software practice of Oleksandr Ivanenko, a Software & AI Systems Engineer based in Switzerland. I build and extend business applications with Java/Spring and TypeScript, connect systems through APIs and automation, add practical AI to existing applications, and make websites findable in classic and AI-powered search. Projects range from a website to a CRM with a built-in AI agent.
Based in Switzerland · Working language: English · Java/Spring · TypeScript/Angular · Python/FastAPI
WHAT I DO
Build and connect
A website or online store that explains what you offer, works in several languages and makes it easy to get in touch. Built on clean technical SEO and connected to your existing systems where needed. Example: technical setup of a Swiss WooCommerce store.
Your team needs a new module, API or admin screen in a system that already works. I add it to the existing product instead of replacing it.
Data is copied between tools by hand, or a routine task takes the same steps every time. I connect the services through APIs and turn the task into a clear, repeatable workflow.
One concrete AI feature in the system you already use: search across your documents, help with incoming information or support for your staff. We agree up front how to check whether it actually helps.
Get found by search and AI
Find out whether Google, Bing, ChatGPT Search and Google AI Overviews can reach and understand your website. I check crawler access, indexing and structured data, and test the questions your customers actually ask. You receive a written report with fixes in order of priority.
I implement the fixes from the audit: technical SEO, structured data and pages that answer real customer questions. Google Search Console, Bing Webmaster Tools and privacy-friendly analytics show you which visits come from AI search.
AI assistants in the browser can read selected facts from your website — services, contact details, project information — and answer visitors from your own data. You decide what is available. The assistant only reads: it does not send forms or act on the visitor's behalf. Support for this standard is still new, so the first version covers reading selected facts.
PORTFOLIO
Projects already built are listed separately: business applications, AI integration and e-commerce.
01 / FULL-STACK DEVELOPMENT
Bring a community organisation’s registration, profiles and applications into one system.
MVP core implemented · Development paused by agreement · Production launch pending
View case study02 / AI INTEGRATION
Answer free-form questions in an existing Telegram bot using curated content.
Deployed for allowlisted testers · User acceptance ongoing
View case study03 / E-COMMERCE
Prepare a Swiss online store for orders and payments.
Main technical phase complete · Shipping tariffs being refined
View case studyHOW I WORK
For an existing product, the first step may be a scoped feature or integration. For an AI idea, it may be a limited pilot with a way to judge whether it helps.
My focus is on clear boundaries, maintainable implementation and honest reporting of what is working.
Connect on LinkedInSEPARATE INITIATIVE · FIRST PILOT ON 15 NOVEMBER 2026
Practical AI workshops for adults and community groups. The first pilot takes place on 15 November 2026.
LET'S TALK
Tell me what you are building or improving, what already exists, and the next decision you need to make.
Prefer email? o.ivanenko.web@gmail.com