Software development · Web design · AI · Automation
Quell-Code — Software Development, Web Design & AIquell—code.
Programmers and developers building software from the first byte: AI agents, local language models, apps, websites and automations that actually work inside your company.
LLM & RAG
Local models
Web & mobile
Automation
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AI agentsRAGLocal LLMsAppsAutomationReal timeAlgorithmsServersAI agentsRAGLocal LLMsAppsAutomationReal timeAlgorithmsServers
01 — Stance
All good software has a source. For us that is no website builder and no subscription service, but code we write, understand and stand behind ourselves — from the model to the very last animation.
01
Written ourselves
No website builder, no subscription service: we write the decisive code ourselves — from prompt and data model to app.
02
Understood
We know what every line does. That is why we estimate effort honestly and find bugs fast.
03
Owned
Since 1999 we have delivered software we would run ourselves: tested, documented, secure.
We take on projects that demand advanced engineering: where off-the-shelf solutions end, we begin.
This is what an AI agent looks like at Quell-Code: inputs from mail, phone and forms, an agent with tools and knowledge, clear approvals — and actions in your systems.
We are neither a template studio nor an anonymous mega-vendor — but an engineering team equally at home in AI and classic software.
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One team, end to end
AI, app, back end, database and server come from the same team. No hand-offs between agencies, no gaps in responsibility.
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Data-sovereign
If you wish, models and data run entirely in your infrastructure — no dependency on US clouds.
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Iterative & transparent
A working increment every one to two weeks. You see progress before you see the next invoice.
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Security from line one
Permission concepts, validation, encryption and GDPR requirements are part of the architecture, not an afterthought.
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Algorithmic depth
We master not just frameworks but data structures, optimisation and compression — which pays off on hard problems.
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No lock-in
You get source code, documentation and access. Your team — or anyone else — can carry on at any time.
on-prem · offline● inference
04 — Local AI
Your model. Your server. Your data.
Not every request belongs in someone else’s cloud. We install and run language models directly on your hardware — sized to your needs, connected to your documents, without a single byte leaving the building.
A genetic algorithm is searching for our company name in real time: selection, crossover, mutation — the same principles we use for optimisation, route planning and data mining.
Sensitive data stays in-house: local models for documentation, scheduling and internal search.
Local documentation LLM
Phone assistant
Scheduling logic
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Law & consulting
Search and summarise contracts, files and research — with sources and without the cloud.
RAG over case files
Clause extraction
Drafting assistant
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Real estate & construction
Structure enquiries, listings, defects and documents — with apps for the construction site.
Defect app with photos
Lead qualification
Document extraction
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Service & call centres
Telephony with Asterisk, AI pre-filtering and automatic call notes in the CRM.
Voice agent
Call summaries
CRM integration
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Agencies & software teams
We augment your team on AI features, apps or back end — as a dependable development partner.
White-label development
Retrofit AI features
Code reviews
08 — Real time
From switchboard to voice agent.
People once connected calls with patch cords. Today we build phone systems with Asterisk, real-time channels with WebSockets and AI assistants that understand, summarise and route calls.
We understand goals, data and processes. Outcome: a clear scope with risks and priorities.
02 / 05
Current
Architecture
We choose technologies, models and data flows that fit the task — and justify every decision.
03 / 05
Cascade
Build
Short iterations with working increments. You see progress, not slides.
04 / 05
Delta
Launch
Testing, security review, performance measurement, rollout. Documented and ready to hand over.
05 / 05
Cycle
Operate
Monitoring, updates and evolution — models and systems stay current.
11 — Engagement
Three ways to work with us.
01
Project
A well-scoped undertaking with fixed scope
Discovery & concept
Fixed price or budget frame
Hand-over with documentation
02
Partnership
Ongoing development and operations
Monthly allocation
Maintenance, updates, monitoring
Dedicated contacts
03
Team extension
Reinforcement for your existing team
AI, app or back-end expertise
Work in your tools & processes
Knowledge transfer included
8service fields from one team
40+technologies in daily use
2languages: German & English
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12 — Straight answers
Frequently asked questions
What does Quell-Code do?
Quell-Code is a software engineering company focused on artificial intelligence. We build AI agents, RAG systems and automations, install local language models and develop web and mobile apps as well as the server infrastructure behind them.
Can AI models run locally without the cloud?
Yes. Open language models can run on your own hardware. We pick model size and quantisation to match your server or GPU, connect your documents via RAG and deliver an internal interface or API — with no data flowing to third parties.
Which technologies does Quell-Code use?
Among others Python, TypeScript, JavaScript (React, Vue, Nuxt, Next.js, Node.js), PHP/Laravel, Kotlin, Java, Swift, Objective-C, Dart/Flutter, React Native, Lua, T-SQL, MySQL, MongoDB, SQLite, TensorFlow.js, OpenCV, WebSockets, Asterisk and Linux and Windows servers.
How does a project start?
With a no-obligation conversation about your goal and starting point. You then receive an assessment of feasibility, architecture and effort. We build in short iterations with working increments.
Ready when you are
Let’s talk.
Describe your project in a few sentences — you’ll get an honest assessment of feasibility, effort and the way forward.
