Software from North Rhine-Westphalia · since 2023

Software that runs
reliably.
Security as standard.

We build custom software for companies with high demands on security and operations. You are in the right place whether you need a SaaS platform (software as a service), a desktop application or security consulting.

Düsseldorf · Cologne · Aachen · Münster
On site. Dependable.
3 focus areas
1 point of contact
0 compromises on security
.NET
● Huelake · NRW
What we build - three focus areas

Three focus areas. One point of contact.

We concentrate on a few areas that we cover in real technical depth. Every project: one direct point of contact, one clear plan, one code repository you can take over yourself.
app.customername.com / dashboard● live
MRR
€ 24.180
Active
1.247
Uptime
99.97%
Acme GmbH
92%
Möller AG
71%
Bechmann KG
58%
Lindner UG
46%
Rheinwerk
31%
01 - SaaS platforms

Web platforms for processes, customer portals and digital products.

Scalable web applications for productive business processes. From the first customer to five-digit user numbers. Including deployment, backups and monitoring.

Details
.NET 8 + ASP.NET Core · PostgreSQL · Next.js + TypeScript · Docker · 3 environments (dev / sandbox / prod) · fully automated E2E tests in sandbox · Azure DevOps pipelines · automated backups (PITR) · restore tests · OpenTelemetry · Keycloak SSO · infrastructure via Ansible & Terraform · hosting on Azure (DE/EU), VPS or on your own systems.
More on the SaaS stack →
02 - Desktop applications

Cross-platform desktop applications for Windows, macOS and Linux.

Windows, Mac and Linux software built on modern web technologies such as Electron and Next.js. Shipped as an installer, with auto-update, or straight to the Steam store.

Details
Electron + Next.js · code signing for Win/macOS · Squirrel/NSIS installers · distribution via Steam, Microsoft Store or your own shop with Stripe checkout · crash reporting (Sentry) · differential updates · native modules where needed.
Desktop workflow →
● ISO 27001 ready
03 - Product security

Security that fits your product.

Templates, reviews and advice for teams that want to implement their security requirements pragmatically.

Details
Threat modelling (STRIDE) · SBOM + SCA · secret hygiene · pen-test preparation · ISO 27001 mapping · secure SDLC · incident response playbooks.
Security in depth →
● Cross-cutting

AI and ML integration where it genuinely makes sense.

LLM integration, RAG, image generation, speech-to-text, fine-tuning - from API integrations to your own models trained on company data. We apply AI precisely where processes can be simplified or automated.

More →
Why Huelake

Direct communication. Technical ownership without detours.

You talk directly to the people who build. No account manager, no time-zone lottery, no wall of Excel as a status report.
Location
NRW

Right on your doorstep

Workshops in Düsseldorf, Cologne, Aachen or at your office - without any air travel.

Language
DE / EN

German or English

Contracts, documentation and support in your language.

Ownership
100%

Your code, your server

Nothing belongs to us. You can take over any day - and we help with the handover.

Hosting
EU

GDPR without asterisks

Data in Germany or the EU, ready for a DPA, documented and auditable.

How we work

From requirement to production system - in four steps.

Clear phases, each with a result you can keep using independently of us.
Workshop · NRW
01

Getting to know each other

A first conversation with a technical and business assessment. We listen, ask questions and then send you an honest opinion - even when it reads: “Do it differently.”

· 30 min call
· Free of charge
02

Discovery & architecture

We sit down and clarify goals, risks and interfaces. The result: an architecture document, a fixed-price range and a schedule.

· 1-2 weeks
· Fixed price
03

Building in sprints

Three-week sprints with a demo and running increments from the very first sprint. You see progress in the browser or on your machine, not in PowerPoint. CI/CD, tests and backups are included from sprint 1.

· 3-week cadence
· Demo + deploy
04

Handover & maintenance

Full code handover, runbooks, onboarding for your team. After that, maintenance on a retainer or you carry on yourself - your choice, without lock-in.

· Runbook
· Optional retainer
Our toolkit

Technologies that stay maintainable and productive over the long run.

We rely on technologies that receive long-term support and remain maintainable within a team.
Backend
.NET
Games
Unity
Database
PostgreSQL
Frontend
Next.js
Language
TypeScript
Container
Docker
CI/CD
Azure DevOps
Cloud
Azure
SSO / IAM
Keycloak
Provisioning
Ansible
Infrastructure
Terraform
Desktop
Electron
Distribution
Steam · MS Store · Stripe
Observability
OpenTelemetry
Errors
Sentry
Compliance
ISO 27001
LLM
OpenAI · Claude · Llama
AI audio & video
Whisper · Stable Diffusion
Fished out of the lake

What we built most recently.

Excerpts from current and earlier projects - details on request.
SaaS · 2025
OKR Mind Map -
management platform for objectives & key results.

Multi-user in real time, with an audit log

Several users work in the same view at the same time. Full traceability of every change, Stripe billing, multi-tenancy.

.NETPostgreSQLNext.jsStripe
Desktop · 2026
Diagram Awesome -
loop diagrams with an AI image generator.

Steam Early Access

An Electron app for creating loop diagrams with a built-in image generator. Currently in Early Access on Steam, with regular updates and active development.

ElectronNext.jsSteamworksImage gen
Security · 2026
Threat & risk analysis
for a cloud integration.

Threat modelling, CRA & NIS2

Product threat analysis with customer advisory and a secure operation concept. Backed by experience from security and compliance projects.

STRIDECRA complianceNIS2 compliance
Consulting · ongoing
Legacy migration
to Next.js.

Advice, concept, implementation

Migration of a legacy system to Next.js - including data migration, tooling change and a new build & deployment setup.

ConsultingArchitectureMigration
Let us talk

One idea. One coffee.
One clear next step.

30 minutes, no strings attached - in German or English, on site in NRW or remote. We listen, give you an honest assessment, and sometimes say: “Don't build that.”

Arrange a meeting
info@huelake.com
Frequently asked

What customers want to know before the first call.

How long does a typical project take?
A first usable release is usually live after 6-10 weeks. Productive use typically starts much earlier than the completion of every planned feature.
What does it cost?
We run discovery phases at a fixed price (typically €4-8k). From the build phase onwards, day rates or sprint packages. After discovery you get a binding framework - we believe in transparent planning and a cost structure you can follow.
Can we take the project over ourselves later on?
Yes. That is exactly why we deliver clean repositories, runbooks and onboarding for your team. Lock-in would be an own goal for us - we live on referrals, not on hostages.
Do you also host?
We set up hosting on Azure in the Germany West Central or North Europe region - and on request on premise with Ansible. We are happy to run operations on a retainer - or your team does. You decide.
Do you also work with public sector bodies in NRW?
Yes, with experience in procurement-compliant tendering and in connecting to existing public administration interfaces.
Can we distribute the products worldwide?
In principle yes - Steam, the Microsoft Store or your own Stripe shop deliver worldwide. On topics such as VAT, the OSS procedure, US sales tax or reverse charge we provide input for your tax adviser. If the administrative effort gets too large, we integrate a merchant of record (e.g. Stripe) - they take care of taxes, invoices and compliance, and you receive a clean payout.
What if our project does not fit into one of your three areas?
Write to us anyway. If it is not a fit, we usually know someone who can do it. We refer you on honestly.