Nicolai Nielsen
nicolainielsen@nicolai-nielsen.com

Full-stack AI engineerHey, I'm Nicolai

I build AI that works outside the lab.

8+ years building AI products, and these days I build them end to end on my own: frontend, backend, AI, and the data plumbing. I've worked with solo founders, startups, and enterprises, and I share what I learn with 126,000+ engineers on YouTube.

Let's build something ↗Message me on LinkedIn ↗Watch 400+ videos ↗
Nicolai Nielsen, AI engineer specializing in computer vision and production machine learning
Nicolai Nielsen · full-stack AI engineer
Building with AI8+ years
YouTube subscribers126K+
Technical videos400+
How I workSolo

Built with great teams

Solo founders · startups · enterprises

UltralyticsIUNO LAWNVIDIAICON BuildRoboflowForkliftNLTenyksDreamdazetekDataStax

What I build

Three things I build, end to end.

Pick the one closest to your problem. Each one links to the systems I've built and how they work.

01

AI integrations & agents

I turn the systems you already run, like your CRM, database, internal APIs, and documents, into tools AI agents can use, with your approval where it matters.

  • MCP tool layers
  • Agents with human sign-off
  • LLM features in your product
  • Tracing and cost control
02

Computer vision

Cameras that detect, count, track, and inspect in real places, from the model all the way to the dashboard. It's where I started.

  • Detection and tracking
  • Inspection lines
  • Edge and GPU deployment
  • Dataset pipelines
03

Full-stack apps & data

The internal tool or customer app you keep wishing you had: frontend, backend, data, and AI in one system, built by one person.

  • Internal tools and dashboards
  • Customer-facing apps
  • Data integrations
  • Hosting and monitoring

FreeTakes about 30 seconds

What could AI do for your business?

Paste your website. I'll read it and suggest where AI and computer vision could save you time, for your business specifically, not businesses in general.

I only read public pages. The site address and the suggestions are kept so repeat scans are instant. Nothing about you is stored.

scan · yourcompany.comREADY
  • Reading your homepage
  • Reading a couple of key pages
  • Working out what you do
  • Finding AI use cases
  • Finding computer vision use cases
Waiting for a website00:00

Live demos

Watch them work, or press a key.

Small working versions of the systems I build. They run on their own, and you can take over any time.

Fig 1Agent robot
CRMERPDOCS
Watch, or press a key
agent ready

AI integrations & agents

I turn the systems you already have, like your CRM, database, and internal APIs, into tools AI agents can use, with your approval where it matters.

Fig 2Inspection line
rundetectcount
Watch, or press a key
line stopped

Computer vision

Cameras that detect, count, and flag defects on real production lines, in real time. It's where I started.

Fig 3Sync hub
CRMERPDOCS
Watch, or press a key
0 of 3 sources

Full-stack apps & data

You tell me how you work. I connect your tools into one app and one source of truth: frontend, backend, and data.

Why I work solo

Why one person can beat a team.

Fewer people, fewer handoffs, and the person you talk to is the one building it.

You talk to me, not a chain of peopleWhen you message me, you're talking to the person actually writing the code. No account managers, no telephone game, no "let me check with the team".
No overlap, no back-and-forthPut five people on one product and a lot of the week goes into syncing, handing things over, and redoing each other's work. I hold the whole thing in my head, so that time goes into building instead.
AI agents do the heavy liftingAI coding agents write a lot of the code now, and they're fast. That means more people on a project often slows it down. My job is the architecture, the reviews, and the calls that need experience.
Cheaper than even one employeeCompared to hiring even a single full-time developer, you skip the recruiting, onboarding, benefits, and paying for quiet weeks. And instead of someone who covers one part of the stack, you get someone who covers all of it.
My full take on solo vs teams ↗

A TYPICAL TEAM5 people · 10 lines to keep in sync

  • Meetings, tickets, and waiting on each other
  • Overlap and redoing each other's work
  • Bugs hiding in the gaps between people

ME + AI AGENTS1 person · 0 handoffs

Interface & UX
APIs & backend
AI & LLM integration
Data & integrations
Infra & deployment
NICOLAI + AI AGENTS
  • You talk directly to me
  • One way of building things, start to finish
  • New stuff to look at almost every day

Things I've built

Products, platforms, and real systems.

Open source used by engineers worldwide, products I run, and systems built for clients.

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DATASET PLATFORM

Mask0

A private computer vision data platform for importing, annotating, validating, versioning, and exporting datasets without platform lock-in.

React · Python · PostgreSQL · Cloud deploymentVisit Mask0 →
AI systems ↗Computer vision systems ↗

About me

One person, the whole thing.

Interfaces, APIs, databases, data pipelines, LLMs, computer vision, and the servers it all runs on. I build every layer myself, which means it all fits together, and you always know who to talk to: me.

I also teach everything I learn. 400+ videos on machine learning, computer vision, LLMs, and shipping real projects. If you want to see how I think before we work together, that's the best place to start.

More about me ↗Visit YouTube ↗
Nicolai Nielsen's AI and computer vision YouTube channel
4.2M+Channel views
2K+GitHub stars
100%Built by me

Let's talk

Got something you want to build?

Send me a message and tell me about it. It's just me on the other end, from the first chat to everything we build after that.

  • Reply within a day
  • Straight to me
  • No obligation
Nicolai NielsenFull-stack AI engineer
nicolainielsen@nicolai-nielsen.comlinkedin.com/in/nicolaiai
Send me a message ↗LinkedIn ↗