Software engineer
and technical lead.

I spent nearly 12 years building and running software for professional photographers (cloudspot.io), working across the product, infrastructure and engineering team.

I draw on experience across technologies and learn what each problem requires. I follow the evidence, test ideas, and look for the smallest change that solves the problem well.

My experience spans application architecture, distributed systems, cloud infrastructure and data processing, with a focus on reliability, performance and making systems easier to change.

Hi, I'm Oleh.

2014 - 2026

I joined as a freelance engineer and stayed through several stages of the company's growth.

Product and infrastructure

Selected work

More about my experience

A few projects, the problems behind them, and the decisions I helped make.

  1. 01 Architecture and cost

    80%

    fewer edge-compute invocations

    Simplifying image delivery

    I removed an extra caching layer and changed how requests moved through the image-delivery pipeline.

    Read the story
  2. 02 Product evolution

    Incremental migration

    an acquired product brought into the platform

    Integrating an acquired product

    I proposed and helped implement a gradual integration of an acquired product into the main application.

    Read the story
  3. 03 Development workflow

    Weeks to hours

    developer onboarding time

    Making local development repeatable

    I built a local environment that let engineers run the application and its payment workflows on their own machines.

    Read the story

How I work

I like to see the path through space and time: how a system fits together, how it might evolve, and which choices leave room for what's next.

I work through the options with the team, weighing what each would take to build, run and maintain. Then I help implement the change and leave it in a form others can understand.

I'm also interested in building a company with the right people. If you're looking for a technical partner, I'd be happy to talk.

Recent experiments

All experiments

Things I've built to investigate an idea or understand how a tool works.

  1. Kev vs Jev evaluation

    Kev-4B and Jev tested on game control, decisions within an agent, and 1,253 public function-selection cases. Explore input formats, confidence estimates, and individual answers.

  2. CLM vs Jev evaluation

    A comparison of CLM and Jev as game controllers, on bounded agent decisions, and on 1,253 public function-selection cases. Explore the methods, results, and individual answers.

Recent writing

All writing
  1. Published on oaleinyk.xyz

    How Amp plugins work

    An interactive article following an Amp plugin from a TypeScript file through startup, command registration, and execution.