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Agents & custom software

Take on more work with the team you have.

I build agent systems and custom software on your own data and tools, so the repetitive work gets done without new hires. I'm an engineer who studied people, so what I build gets used.

  • AI agents on your data
  • Elixir & Python
  • Concept to production
See what I've built
Diagram: your data, documents and tools feed an agent system that turns them into finished work, taken from concept through build to production.

Used by

Transvexis, the machine-translation product I built, served:

TikTok

TikTok

Machine translation for TikTok

Freedom24

Freedom24

Machine translation for Freedom24's financial content

Why scaling stalls

Three things stop automation from paying off.

  • More work means more hires

    The busywork grows faster than you can hire.

  • AI demos never reach production

    The prototype impresses, then never touches your data, tools or edge cases.

  • Tools that ignore how people work

    People route around them, and the manual work comes back.

What I build

Systems that take repetitive work off your team, so the same people handle more.

  • Agent systems & AI products

    AI agents that work on your own data and tools, running in production.

    • LLM integration
    • RAG & vector search
    • Agent architecture

    In A Nutshell Q&A over long videos, with timestamp citations

  • Custom web products

    Web apps built around your process, with live updates where your team needs them.

    • Elixir / Phoenix
    • Python / FastAPI
    • PostgreSQL

    Tymeslot Open-source scheduling, built in Elixir

  • Workflow automation

    I find the manual work worth automating and build it, with n8n, Zapier or custom code.

    • n8n
    • Zapier
    • Custom API integrations

    80% The Happy Beavers less manual work across the agency

Not sure what to build first, or want your team building with agents themselves?

Shipped systems

Products I built on my own, and the automation behind The Happy Beavers.

Open source · Elixir

Tymeslot

Open-source scheduling that businesses self-host instead of paying SaaS fees.

  • No double-bookings
  • Real-time sync
  • Survives calendar outages
Tymeslot scheduling platform screenshot
In A Nutshell AI video search screenshot AI video search

In A Nutshell

Ask a long YouTube video a question, get the answer with timestamp citations.

  1. Video
  2. Topics
  3. Semantic index
  4. Answer + timestamps
Agency automation

The Happy Beavers

Six years as co-founder and CTO, automating how a marketing agency runs.

less manual work
80%
freelancers
150+
core team
11

Also shipped: Transvexis, AI translation in 39+ languages, used by TikTok and Freedom24. Visit Transvexis

How I work

One person carries your project from first call to launch, so nothing gets lost between plan and product.

  1. 01

    Understand

    A call about your problem and how your team works today, before any spec.

  2. 02

    Offer

    A written offer with scope and price before any work starts.

  3. 03

    Build

    Architecture and production code, by the person who scoped it with you.

  4. 04

    Ship

    Deployed, monitored and documented. I stay until your team relies on it.

Built by an engineer who studied people

I start with why you need it and how your team will use it, so the system gets used and the work scales.

Luka Breitig

Engineer and founder

6 years as co-founder and CTO

Ships production systems

Studied people, then business

Top 2% nationally, in an MA in Management

BSc Psychology

Builds with Elixir / Phoenix Python / FastAPI PostgreSQL LLM integration RAG Agent architecture

From the person who built The Happy Beavers with me

Working with Luka at The Happy Beavers was great for the business and for me personally. He sees the whole picture and still gets the details right. He looked at how our team actually worked, found what could be automated and built it, so eleven of us could run a network of more than 150 freelancers. He also brought the team along: he made difficult problems feel manageable, even interesting. If you want your business to grow without growing the team, Luka is the person to ask.

Liliia Yurchuk

Liliia Yurchuk

Co-founder, The Happy Beavers

Frequently asked questions

Price, ownership and what happens after launch.

The price depends on what the system must do, what it connects to and how much preparation it needs. After a call about your project you get the price in writing before anything is booked, and we look for an offer that works for both sides.

It depends on the scope. Once we have talked through what the system has to do, you get a timeline in the written offer, together with the price.

You do, once the final invoice is paid. The code can live in your own repository from the first commit, and the written offer sets out the details.

The system ships deployed, monitored and documented, and I stay until your team relies on it. After that you choose: your own developers take it over with the documentation, or we agree ongoing maintenance and changes separately.

Another developer can pick it up. I build on a standard, widely used stack (Elixir and Phoenix or Python, with PostgreSQL), document the system as part of the work, and the code can live in your repository.

An agency gives you capacity, but developers rotate and context gets lost between them. With me, the person who scopes your problem is the person who writes the code, from the first call to launch. If you need several developers in parallel, an agency is the better fit.

A ChatGPT wrapper sends what a user types to a model and shows the reply. A custom agent system works inside your stack: it follows your business rules, reads your own data and carries a task through several steps. For example, it can pull CRM data, check stock, draft a tailored proposal and send it for approval. That is work your team no longer does by hand.

Look for someone with formal business training who has also held a strategic engineering role. I studied psychology (BSc) and management (MA, top 2% nationally), and spent six years as co-founder and CTO of the marketing agency The Happy Beavers. The systems I built there cut manual work by 80% and let an 11-person core team run 150+ freelancers. So every project starts with the business problem and the people involved, and the technology follows.

Have a question about your project?

Get more done without the next hire.

Tell me which work you want off your team's plate. You get a clear view of what it takes and a straight answer on whether I'm the right fit.

A few lines are enough. I reply myself, usually within a day.

Further reading

Articles on how agents work, for anyone deciding where to use them

Claude's text watermark: who can detect it, and can you remove it?

Claude's text watermark: who can detect it, and can you remove it?

13 August 2026
Luka Breitig

Claude now watermarks everything it writes. I read Anthropic's write-up, the EU law behind it and the research to find out who can detect the mark and what removes it.

Do LLMs write better Elixir than Python?

Do LLMs write better Elixir than Python?

2 April 2026
Luka Breitig

A Tencent benchmark ranked Elixir first for LLM code generation. As an Elixir developer, I checked the data and found the ranking overstated and the structural advantages real.

From chatbot to agent: a step-by-step model of how AI agents get work done

From chatbot to agent: a step-by-step model of how AI agents get work done

4 January 2026
Luka Breitig

Step by step, how an AI agent plans a task, uses tools and checks its own work, and how to tell which of your team's tasks it can take on.