Daniil Kulchenko
Daniil Kulchenko
P S K C

Daniil
Kulchenko

Senior full-stack software developer.

Hey there. I build platforms, products, and the occasional company — working hard on making people happier. This is where my line runs.

Downtown & Brooklyn — things I’ve done

Things I’ve done

Local & express service · all times
2010–2011 Founder

Phenona

PaaS cloud computing startup · acquired by ActiveState

Founded and built one of the pioneering containerization-in-the-cloud platforms — years before Docker entered the fray. ActiveState acquired it in June 2011, when I was 15 years old.

Transfer at this station: ActiveState · June 2011

2011–2014 Core engineer

Stackato

Enterprise platform-as-a-service at ActiveState · later acquired by HP

Developed core functionality for Stackato, ActiveState’s PaaS for the enterprise — letting users deploy applications to private clouds securely and at scale. Particular focus on containerization, devops, and web development.

Transfer at this station: HP

2018–2020 Senior interview engineer

Karat

Fair technical interviews, at scale

Interviewed software engineers for Karat, evaluating candidates applying for positions at Karat’s large, tech-centric enterprise clients.

2015–now Founder

calmbox

A monthly subscription box of calm

Aside from software, I run calmbox, a monthly subscription box of calming and relaxation-themed products — marketing, procurement, and day-to-day operations included. More recently, I built its backend from scratch in Elixir and Phoenix. It has since grown into a sophisticated subscription e-commerce platform, with capabilities that go far beyond most off-the-shelf solutions.

This station is staffed 24 hours.

I keep a blog at dew.pt.

Stories from the line — startups, software, and everything in between. Color-coded for easy wayfinding.

Planned reading notice

Selling a startup at the age of 15

Runs express from this page to dew.pt at all times. No transfer required.

More posts

Want to chat?

Replies run 24 hours a day, 7 days a week. Stand clear of the closing doors, please.