# Justus Berner

> Founder based in Sipoo, Finland. Building companies since the age of 14,
> mostly bootstrapped, without outside money or paid marketing. Writes about
> life and about how things actually get built. Currently building Selda, a
> go-to-market engine that finds the right people, researches each company and
> writes every message for a human to approve.

## About

- Name: Justus Berner
- Location: Sipoo, Finland (just outside Helsinki)
- Contact: justus@evexcreative.com
- Focus: go-to-market, distribution, organic growth without ad spend
- Approach: leverage over headcount, distribution over invention, under-promise
  and over-deliver

## Current work

- [Selda](https://selda.ai) (2026, now): tell it who you want to reach; it
  finds the right people, researches each company and writes every message from
  what it found. Nothing sends without human approval. Email, LinkedIn, WhatsApp
  and Telegram, in 40+ languages.
- [Evex Creative](https://evexcreative.com) (2025, now, formerly Berner Media):
  finds the points where demand leaks out of a business and replaces them with an
  organic sales channel. No ad budget.
- Digital business development delivered directly to companies, in small steps
  with a low threshold to start.
- [Terassikesä.fi](https://terassikesa.fi) (2020, now): Finland's largest
  terrace guide, May to August. Around 36,000 active users and over a million
  Google search impressions in an average season, with no ad spend.
- [Nopee ry](https://nopeetoiminta.fi): youth non-profit working across
  Itä-Uusimaa where young people run their own workshop and projects. Own
  premises opened in Söderkulla, Sipoo in 2024: dance studio, music room,
  gaming space and workshop rooms. Named Entrepreneurship Educator of the
  Year in 2021.

## Earlier

- Co-founder, then CEO of a startup (2023–26). Hardware and software together:
  own industrial design, the device and the platform around it. Product built
  with the BernerSoft team; raised the funding and built the company.
- Berner Media (2019–25): marketing agency based in Finland with projects
  abroad, marketing as
  a service, short-form video and TikTok. Grew to around fifteen people.
- Pukinkontti.fi (2019–23): affiliate gift site that became one of the most
  visited Christmas gift guides in Finland, grown organically with no ad spend.
- BernerSoft (2023–25): software, integrations and automation our team
  built for other companies.
- Raflakeskus (2021–24): a platform for running a restaurant, built with an
  international team.

## Open source

- [projection-mapper](https://github.com/justusbernerdev/projection-mapper):
  browser-based projection mapping for live events: arbitrary surfaces, live
  cues, multiple output windows, a GrandMA-style executor grid and a phone
  remote. Vanilla JavaScript and Vite, MIT licensed.
- [evex-bridge](https://github.com/justusbernerdev/evex-bridge): a limited,
  logged connection into a client's WordPress site for the length of the agreed
  work.

## Notes

- [My four walls and the search for momentum](https://justusberner.com/notes/four-walls-and-the-search-for-momentum): Ten months in twelve square meters. Not a story about focus as a virtue, but about removing every exit until the work was the only one left. (4 September 2026)
- [Two days in Tampere, and you do not need an idea](https://justusberner.com/notes/two-days-in-tampere-and-you-do-not-need-an-idea): I found my name on the mentor list for a hackathon for upper secondary students. If you are one, go, and here is why I am saying that plainly. (3 September 2026)
- [A new chapter starts when the tests go green](https://justusberner.com/notes/a-new-chapter-starts-when-the-tests-go-green): Selda is in production. Ten months of work, and the first campaigns go out this morning. (3 September 2026)
- [Eight thousand commits since the last post](https://justusberner.com/notes/eight-thousand-commits-since-the-last-post): My last post anywhere was two and a half years ago. I was busy putting things back in order. (3 September 2026)
- [First time at Junction](https://justusberner.com/notes/first-time-at-junction): I got in. I have spent years deliberately avoiding this kind of thing. (29 August 2026)
- [Closing the channel to save your own time](https://justusberner.com/notes/closing-the-channel-to-save-your-own-time): Someone told me they were removing digital ways to buy so the process would take less of their time. It works, eventually. (25 August 2026)
- [If I have to book a demo, I am not your customer](https://justusberner.com/notes/if-i-have-to-book-a-demo): Two rules I have built every product against, and what a booking vendor taught me about both. (19 August 2026)
- [Fifteen versions of the same screen](https://justusberner.com/notes/fifteen-versions-of-the-same-screen): Charts you did not configure yourself are not information. They are stress. (12 August 2026)
- [Three and a half months on one problem](https://justusberner.com/notes/three-and-a-half-months-on-one-problem): Writing a message that sounds like a person and still converts. The hardest thing in the product, and not a technical problem. (5 August 2026)

## Pages

- [Home](https://justusberner.com/)
- [Notes](https://justusberner.com/notes)
- [RSS feed](https://justusberner.com/feed.xml)
- [Sitemap](https://justusberner.com/sitemap.xml)