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Lukas Günther Teissl
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Development · Websites · Business software

Your idea.My implementation.

I develop websites, portals and custom software around real working processes. These references show how I structure requirements, connect features and turn an idea into a usable solution – with my specific contribution clearly explained for each project.

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  • Custom development
  • Websites & client portals
  • Practical workflows
Lukas TeisslUnderstand requirements. Develop solutions.
A personal favorite in focus★ 01

Lukas Teissl Academy

In-house development
academy.lukasteissl.comEN Lukas Teissl Academy – Public project view (EN)

Supplied project screenshot · Original language: EN.

Explore the implementation

More than screenshots: features, development contribution and practical purpose.

20Favorites58Project profiles59Domain mappings3Languages
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Further references · Personally released

More experience. Relevant to your project.

This website shows only a small selection of my references. Through my PROOF portal, you can request further relevant project evidence, including work for well-known companies.

For strategic reasons and to protect confidential client relationships, I share these references selectively rather than making them openly available. Describe your project directly in the portal: I personally release the relevant insights within the scope of the respective permissions.

Request further references Explore the PROOF portal

Registration alone does not unlock confidential content. Particularly sensitive documents may require a confidentiality agreement before access.

PROOFproof.lukasteissl.comPrivate access
Supplied English view of the PROOF portal by Lukas Teissl
A look inside the PROOF portal · Original English view
Request in the portal

Describe your project and the insights you need.

Personal selection

Receive relevant, selectively released evidence.

Selected work

My favorites.
A good place to start.

These selected projects show how I approach custom applications and business websites. Open a project to explore the requirements, features and my specific contribution.

crm.lukasteissl.comDE Lukas Teissl CRM – Public project view (DE)
In-house development01

Lukas Teissl CRM

Invoices, recurring costs, tasks and deadlines should not demand your attention all day. My custom-built CRM brings these workflows together, sends email reminders and makes the next step visible. I can tailor the interface, rules and modules to your business, leaving more room for clients, decisions and growth.

  • Business systems
  • Automation
offers.lukasteissl.comEN LT Offers – Proposal & Closing CRM – Public project view (EN)
In-house development02

LT Offers – Proposal & Closing CRM

LT Offers brings personal offer pages, clearly defined services, documents and digital confirmation into one coherent customer journey. For suitable contracts, customers can accept online rather than printing, signing and returning paperwork. The agreed deposit process follows. I can tailor the software to your own proposal and sales workflow.

  • Business systems
  • Portals
Lukas Teissl Client Portal · EN In-house developmentLukas Teissl Client Portal Lukas Checks · EN In-house developmentLukas Checks
Find a relevant example

Find the right inspiration for your project.

Save relevant examples for your project conversation. Search by task, system or domain. Each project page explains the features, my contribution or involvement, and a relevant starting point for a conversation.

All projects in my chosen order. A star marks my personal favorites.

58 projects found

crm.lukasteissl.comDE Lukas Teissl CRM – Public project view (DE)
Selected by Lukas In-house development

Lukas Teissl CRM

Invoices, recurring costs, tasks and deadlines should not demand your attention all day. My custom-built CRM brings these workflows together, sends email reminders and makes the next step visible. I can tailor the interface, rules and modules to your business, leaving more room for clients, decisions and growth.

crm.lukasteissl.com
  • Business systems
  • Automation
Explore the implementation · Lukas Teissl CRM
offers.lukasteissl.comEN LT Offers – Proposal & Closing CRM – Public project view (EN)
Selected by Lukas In-house development

LT Offers – Proposal & Closing CRM

LT Offers brings personal offer pages, clearly defined services, documents and digital confirmation into one coherent customer journey. For suitable contracts, customers can accept online rather than printing, signing and returning paperwork. The agreed deposit process follows. I can tailor the software to your own proposal and sales workflow.

offers.lukasteissl.com
  • Business systems
  • Portals
Explore the implementation · LT Offers – Proposal & Closing CRM
checks.lukasteissl.comEN Lukas Checks – Public project view (EN)
Selected by Lukas In-house development

Lukas Checks

Lukas Checks connects website checks, SSL deadlines, reminders and follow-up reviews in my own application. It illustrates my approach to internal tools: organise technical information so that a check result can become a clear follow-up task.

checks.lukasteissl.com
  • Automation
  • Business systems
Explore the implementation · Lukas Checks
caretrade-international.comEN CareTrade International – Public project view (EN)
Selected by Lukas Client project

CareTrade International

For CareTrade International, I implemented a multilingual company website bringing together product areas, project information, media and enquiry routes. The project shows how I turn an extensive service offering into an understandable website with clear navigation and a layout that works across devices.

caretrade-international.com
  • Websites
  • Business systems
Explore the implementation · CareTrade International
proof.lukasteissl.comEN PROOF · References and Evidence Portal – Public project view (EN)
Selected by Lukas In-house development

PROOF · References and Evidence Portal

PROOF brings public project examples, traceable responsibility and selectively released evidence into a dedicated portal. Concept, design, development and hosting are attributed to my consulting business. It shows how persuasive reference communication can work alongside controlled access.

proof.lukasteissl.com
  • Websites
  • Portals
  • Presentation & media
Explore the implementation · PROOF · References and Evidence Portal
select.lukasteissl.comEN Lukas Teissl Select – Public project view (EN)
Selected by Lukas In-house development

Lukas Teissl Select

SELECT connects a public presentation with individually released media views. My consulting business is credited with concept, design, development and hosting. The project demonstrates a solution for content that should be presented attractively without being distributed indiscriminately to every visitor.

select.lukasteissl.com
  • Portals
  • Presentation & media
Explore the implementation · Lukas Teissl Select
register.lukasteissl.comEN REGISTER · Events and Personal Conversations – Public project view (EN)
Selected by Lukas In-house development

REGISTER · Events and Personal Conversations

REGISTER brings live webinars, in-person meetings and individual conversations into one public starting point. Dates, explanations and frequently asked questions support selection. My portal project shows how different interaction formats can be presented as clear, distinct contact routes.

register.lukasteissl.com
  • Websites
  • Portals
  • Presentation & media
Explore the implementation · REGISTER · Events and Personal Conversations
demo.lukasteissl.comEN Lukas Teissl Demo – Public project view (EN)
Selected by Lukas In-house development

Lukas Teissl Demo

My demo portal makes custom applications and presentations understandable through one starting point. Instead of an unexplained list of links, prospects receive context and the appropriate access route. “What is possible?” becomes a concrete basis for a development discussion.

demo.lukasteissl.com
  • Presentation & media
  • Portals
Explore the implementation · Lukas Teissl Demo
startup.lionintergroup.comEN Lion StartUp – Public project view (EN)
Selected by Lukas Company project

Lion StartUp

Lion StartUp organises topics around business ideas, company formation and international structures. It shows a service website that connects general explanation with personal clarification. The portfolio focuses on information structure, not professional formation or legal advice.

startup.lionintergroup.com
  • Websites
  • Presentation & media
Explore the implementation · Lion StartUp
polartensor.lukasteissl.comEN PolarTensor · Webinar and Information Website – Public project view (EN)
In-house development

PolarTensor · Webinar and Information Website

My PolarTensor site connects the central information area with videos, presentations, documents and a personal webinar route. The reference shows a focused information presence that distinguishes introduction, deeper exploration and contact while identifying the relevant external provider.

polartensor.lukasteissl.com
  • Websites
  • Presentation & media
Explore the implementation · PolarTensor · Webinar and Information Website
tagmarkets.lukasteissl.comEN TAG Markets · Information and Webinar Website – Public project view (EN)
In-house development

TAG Markets · Information and Webinar Website

My TAG Markets site connects introductory videos, interviews, webinar information and personal contact options. It demonstrates a thematic information journey that addresses different questions in suitable formats and distinguishes external provider information from my own presentation.

tagmarkets.lukasteissl.com
  • Websites
  • Presentation & media
Explore the implementation · TAG Markets · Information and Webinar Website
andihood.comDE AndiHood · Video Platform in Development – Public project view (DE)
Company project

AndiHood · Video Platform in Development

AndiHood.com introduces a video-platform project under development. Streaming foundations, creator areas and authorised testing are part of the stated project context. The reference shows the public stage and makes development status clear instead of presenting a fully available platform.

andihood.com
Source project in development
  • Websites
  • Presentation & media
Explore the implementation · AndiHood · Video Platform in Development

The order is editorially selected. Other projects remain accessible through the categories and the domain directory.

Complete overviewThe complete domain directoryAll 59 domains · linked to 58 project profiles

Each address leads to its project description. Multiple domains of the same application share one profile.

The two Meeting addresses belong to one application. AndiHood IT Services and the AndiHood video platform are separate projects.

From your requirements to implementation

Good software starts
with the right question.

What should become simpler, clearer or better connected for you? That is where my development approach begins. These references offer concrete starting points for your own plans.

Understand the workflow

We start with your goals, users and existing systems. A concrete working process often tells us more than a long list of technical keywords.

Define the right scope

We clarify features, priorities and dependencies. The aim is a practical implementation proposal based on your situation, not a rigid standard solution.

Connect development and usability

Features need to work together and make sense in everyday use. For me, technical implementation, user experience and ongoing project discussion belong together.

An additional company perspective

More references from my business environment

A further selection of references from my company is available at Lion InterGroup Informatics.

View Lion InterGroup references

Additional company references; they are not all attributed to me as personal development work. Destination language: German

References / Proof

Explore the work.
Review the qualifications.

Project examples demonstrate my approach. Certifications, a professional overview and my résumé provide additional context and evidence.

Central proof portalCertifications & evidenceProfessional overviewRésumé
Professional background ↗My books ↗My courses ↗
From an example to your own project

Your requirements.
A fitting solution.

You do not need a finished specification to get started. Tell me what your website or software should do, who will use it and which systems are already in place. In an initial conversation, we can identify a sensible starting point and the next steps.

Discuss your project

A typical workflow, your goal and your existing systems are enough to start.

Portfolio Atelier

My project shortlist

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