Yehor Feshchenko

System Analyst · AI Integration

Yehor Feshchenko

I turn vague business requests into work a team can build, and I run my own multi-agent AI system every day.

now
Senior System Analyst · Lazerhouse
analyst since
Sep 2023
based
Kyiv, Ukraine · remote

How I work

A made-up request, typical of the real ones. Step through what happens to it.

“The sales report is slow and sometimes wrong. Can you fix it?”a one-line request from the sales team, Monday morning

1 · Questions I ask

  • Which report, and who opens it? The weekly report by region, used by 12 managers.
  • How slow? About 40 seconds to open.
  • Wrong how? Some returns are missing when you filter by week.

2 · What I check in the system

  • Reproduced it. A return booked on a Sunday lands in the next week.
  • The 40 seconds come from recalculating all history every time the report opens.

3 · The task I write

Problem
The weekly report counts Sunday returns in the wrong week, and it takes about 40 seconds to open.
Reproduce
Book a return on a Sunday, open the report for that week, and the return is missing.
Accept when

Given a return booked on a Sunday, when I open that week, then it is counted in that week.

Given the report is opened, then it loads in under 5 seconds.

Priority
P2: wrong numbers in a report people use for decisions.

✅ Ready for development. No questions left.

Now

Career

Each block is a role, drawn to scale in time. Pick one to read what I did there.

Technical Support Manager

Samsung Electronics Ukraine · Mar 2020 – Jun 2022

  • Diagnosed issues from vague user reports; escalated to developers with repro steps and impact
  • Wrote troubleshooting guides from recurring cases, moving repeat issues to self-serve resolution
  • Technical pre-sales and live-chat support for the online business unit
  • Turned recurring issues and chat-quality patterns into feedback for scripts and materials

Technical Account Manager

Lazerhouse · Jul 2022 – Aug 2023

  • Support and account management for the systems I later analysed
  • Owned work accounts and service access, which later became the access-management process

Middle System Analyst

Lazerhouse · Sep 2023 – Mar 2026

  • Turned vague business requests into specified, prioritised development tasks
  • Translated requirements between business stakeholders and developers in both directions
  • Analysed incidents across CRM, 1C, website and payment integrations and documented each case

Senior System Analyst

Lazerhouse · Apr 2026 – Present

  • Own requirements end to end, from elicitation and scoping to dev handoff and UAT
  • Designed and own the access-management process for 9 internal systems (request, approval, provisioning, revocation)
  • Analyse incidents across CRM, 1C, website and payment integrations and turn recurring ones into process changes

Skills ↔ work

Pick a skill to see where I used it. Pick it again to clear.

Analysis

UML Data modeling Scrum UAT

Tools

REST APIs Postman SQL

AI

Retrieval-Augmented Generation (RAG)
personal project Exocortex, a multi-agent AI system I run daily A plain-file knowledge base worked by several AI agents, with task routing, guardrails and human approval on anything that leaves the machine. Lazerhouse From vague requests to ready development tasks The point where a business request becomes a task a developer can start without another round of questions. Lazerhouse Access to nine internal systems, as a process Joiners, movers and leavers across nine internal systems, turned from ad-hoc requests into an auditable process.

Also

languages
English · B2+ · Ukrainian · native · Russian · native
education
BA, Philology (Slavic Languages and Literatures, incl. Translation), Taras Shevchenko National University of Kyiv, Jun 2021