./Serhii Mahas
/ AI agents/ Process automation/ Full-stack development

AI agents that do the work.

/ Who I am

I'm Serhii, a full-stack developer and AI automation engineer with 4+ years in software and 11+ in B2B and B2C business. I build RAG chatbots and agents that work from your own data, plus the interfaces around them. The globe is one of them.

/ What I do

Full-stack developer at eValue.cz since 2022

/ Location

Znojmo, Czechia, ready to relocate

/ How I work

On-site, hybrid or remote

/ Work with me

Let's build together

Four ways we can work, from the first sketch to the shipped product: agents that connect to your tools, websites that bring in customers, mobile apps your customers keep on their phone, and the interface design that ties them together.

Your documents, calendar, CRM and inbox keep working as they do today, and the agent can meet your clients on WhatsApp, Telegram, Slack, LinkedIn and Facebook. It reads from these tools and acts in them.

I start by mapping how the process really runs, then replace the repetitive steps with LLM-assisted agents: RAG chatbots on your own documents, tool-calling agents and voice. Eleven years in B2B and B2C sales and management taught me to start from the work itself, not the tooling.

RAG chatbotsTool-calling agentsVoice interfaceProcess mappingCRM and calendarMessengers
DocumentsCRMCalendarEmailWebsiteDatabaseWhatsAppSlackTelegramLinkedInFacebook

/ Projects

Projects I've worked on

Live sites and platforms I worked on as part of the development team, across both the front end and the back end.

evalue.cz

eValue.cz

UI, UX, SEO, front-end and back-end developer

The website of the Czech software company where I work, with offices in Prague, Znojmo and Sofia. Rebuilt from a single-page app into a search-optimised site with a CMS.

Next.jsTailwindStrapiPostgreSQLTypeScriptAWS S3SEO

/ Under NDA

Other projects I've worked on are covered by NDA contracts, so I can't show them publicly. I can walk you through them once an NDA is in place.

/ My story

From running a sales office to shipping software

2022 to now

Full-stack developer, eValue.cz

React and React Native apps for web and mobile, Node.js and Express back ends, REST APIs, MongoDB, third-party integrations and server-rendered Next.js, working with design and product teams in Figma and Jira.

2018 to 2022

Head of Representative Office, Optys Ukraine

Promoted from sales manager to run the Ukrainian office: team, clients, budgets and strategy. Also designed and built the company's e-commerce website from concept to launch, opening a new online sales channel.

2013 to 2018

Sales manager, Optys Ukraine

Managed a B2B client portfolio, consistently met monthly targets and trained new team members. Earlier, at MOYO in 2012, I was the store's top sales manager within six months.

Education

Management degree and web training

Master's in Management of Organizations from Kyiv Slavonic University, then certificates in Web Design (2017) and Frontend Development (2020) at Projector Institute.

Interfaces
React, Next.js, React Native, TypeScript
Back end
Node.js, Express, REST APIs, MongoDB, PostgreSQL
AI
LLM models, RAG chatbots, tool-calling agents, voice
Design
Figma, UI and UX, motion, design to code

/ Beyond the code

A people person, off the clock.

I like working with people, and I like what fills the time between projects. It keeps me curious, and it makes me a better teammate.

Skip the form.Ask the agent.

/ Contact

Talk to the agent now, or to me.

Based in Znojmo, Czechia. Open to freelance projects and full-time roles, on-site, hybrid or remote, and ready to relocate.

Message me on

  • Slack
  • WhatsApp
  • Telegram
  • LinkedIn
  • Facebook
Slack link coming soon