Makasu designs and builds custom, data-centric software systems for organisations that have outgrown spreadsheets, fragmented tools, and generic SaaS.The focus is not on features or trends.
The focus is on structure.Makasu systems are designed to support daily operations, reduce noise, and remain calm under growth.
Most organisations don’t fail because they lack software.
They fail because their software no longer fits.
Spreadsheets become fragile systems.
SaaS tools multiply and overlap.
Critical data is scattered.
Processes rely on memory and workarounds.
Over time, the system itself becomes the problem.
Makasu designs coherent internal systems that replace fragmentation with clarity. This includes:
Designing the underlying data model
Structuring workflows around reality, not theory
Building software that reflects how the organisation actually works
The result is not an “app”.
It is a working system.
Makasu works best with organisations that:
value clarity over novelty
prefer systems that last
want fewer tools, not more
understand that good software should feel calm
If you are looking for fast experiments, constant reinvention, or off-the-shelf answers, Makasu is not a fit.
The first step is not a build. It is a conversation about structure.A System Clarity Session is a focused engagement to understand your workflows, data, and constraints — and to determine whether a custom system makes sense.
Makasu does not start with tools, features, or automation.
The work starts with:
Real workflows
Real constraints
Real data
Only then does software enter the picture.
Existing workflows are mapped as they truly exist — not as idealised diagrams. This includes:
How work actually flows
Where decisions are made
Where data is created, changed, and lost
Ambiguity is made explicit before anything is built.
A clear data model is designed. This defines:
Entities and relationships
States and transitions
Responsibilities and boundaries
The data model becomes the backbone of the system.
The system is built with restraint. Priorities are:
Clarity over cleverness
Performance over decoration
Durability over speed
Every element must justify its existence.
Systems are expected to change. They are not expected to decay.Changes are introduced deliberately, without eroding structure or introducing noise.
A system that is well-designed:
supports daily work without friction
reduces operational noise
makes decisions easier
fades into the background
That is the goal.
Makasu designs and builds custom internal software systems.Typical systems include:
Internal CRMs and client management platforms
Operations and administration systems
Compliance, legal, and case management tools
Project, asset, and documentation tracking
Bespoke back-office systems SaaS cannot model
Each system is designed around the organisation’s specific data and workflows.
Custom does not mean:
Unlimited features
Visual complexity
Constant change
Custom means:
The data model fits
The workflows match reality
Unnecessary elements are removed
The system exists to support work — not to impress.
In most cases, a Makasu system replaces:
Multiple spreadsheets
Overlapping SaaS tools
Manual coordination
Undocumented processes
The result is fewer tools, not more.
Makasu does not deliver:
Generic templates
Dashboards for their own sake
Feature overload
Experimental software
The work is deliberate and bounded.
Not every problem requires custom software.
That is determined before anything is built.
Makasu is led by Marcus Stiehler, system designer and software architect with nearly two decades of experience designing and building custom business systems.His work focuses on:
Internal software for complex organisations
Long-lived systems that must remain stable
Data-centric architectures that support real operations
Makasu exists to apply this experience with restraint.
Marcus has designed and built systems across:
Legal and compliance environments
Finance and operations
Enterprise and SME contexts
The emphasis has always been on clarity, structure, and durability.
Marcus is a certified Claris FileMaker™ developer, holding official professional certifications. These represent:
Verified technical competence
Long-term platform experience
The ability to build production-grade systems
They do not define the work — they support it.Makasu designs systems independently of trends or tools.Most systems are built using FileMaker, chosen for its relational strength and long-term durability in internal environments.The system determines the tool — not the other way around.

You can find Marcus on LinkedIn.
Makasu is intentionally small and focused.Work is done directly, without layers, and with clear responsibility.If this approach resonates, the next step is a conversation.
The System Clarity Session is a focused conversation to understand your current workflows, data, and constraints — and to determine whether a custom system is the right solution.This is not a sales call.
It is a structured analysis of your situation.
During the session, we look at:
How work currently flows through your organisation
Where data is created, duplicated, or lost
Which tools are compensating for missing structure
Whether simplification or custom software makes sense
The goal is clarity, not commitment.
After the session, you will have:
A clearer understanding of your system landscape
An assessment of whether custom software is appropriate
An outline of possible next steps (or confirmation that none are needed)
In many cases, this alone removes weeks of uncertainty.
Duration: 60 minutes
Format: Video call
Preparation: Brief written context (via the form below)
The session is intentionally limited and focused.
Not every organisation needs custom software.
That is determined before any build is discussed.If Makasu is not the right fit, you will be told so directly.
Please provide a short overview of your situation. This helps determine whether the session is appropriate and ensures the conversation is focused.
Your request for a System Clarity Session has been received.
Your submission will be reviewed personally.The goal at this stage is not scheduling — it is fit.If a System Clarity Session appears appropriate, you will receive a reply with:
Confirmation
Available time options
Any brief follow-up questions, if needed
If it is clear that a session would not be useful in your situation, you will be told directly.
You can expect a response within 1–2 business days.Makasu is intentionally small and focused.
Requests are handled carefully, not automatically.
If you would like more context on how Makasu works:
There is nothing you need to do right now.If a session goes ahead, any preparation will be minimal and clearly explained.
Last updated: 5 January 2026This Privacy Policy explains how personal data is collected and processed when you visit this website or contact Makasu.
The data controller responsible for processing personal data on this website is:Convenies LLC
30 N Gould St Ste R
Sheridan, WY 82801
United States
Email: [email protected]Makasu is a brand and professional practice operated by Convenies LLC.
Personal data is processed in accordance with applicable data protection laws, including the EU General Data Protection Regulation (GDPR), where applicable.Personal data is processed only to the extent necessary and for specific, explicit purposes.
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Personal data is retained only for as long as necessary to fulfil the purpose for which it was collected, or as required by applicable legal obligations.Inquiry data may be deleted once communication is concluded, unless further retention is required for legal or contractual reasons.
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If you believe that your data is being processed unlawfully, you have the right to lodge a complaint with a competent data protection authority in your country of residence.
Appropriate technical and organisational measures are taken to protect personal data against unauthorised access, loss, or misuse.However, no method of data transmission over the Internet can be guaranteed to be completely secure.
This Privacy Policy may be updated from time to time to reflect legal, technical, or organisational changes.The current version is always available on this website.
Convenies LLC
30 N Gould St Ste R
Sheridan, WY 82801
United States
Email: [email protected]Makasu is a brand and professional practice operated by Convenies LLC.
Convenies LLC is represented by its managing member(s).
Convenies LLC is responsible for the content of this website.
The information provided on this website is for general informational purposes only.No guarantee is given for the accuracy, completeness, or timeliness of the content.
Liability for damages arising from the use of this website is excluded to the extent permitted by applicable law.
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Convenies LLC has no control over the content of external sites and assumes no responsibility for them.
All content on this website, including text and design, is protected by applicable intellectual property laws.Any use without prior written permission is not permitted.
This Legal Notice is governed by applicable laws.
Mandatory consumer protection regulations remain unaffected.
Last updated: 5 January 2026These Terms of Service govern the use of this website and the provision of professional services by Convenies LLC under the Makasu brand.By accessing this website or requesting services, you agree to these Terms.
Professional services offered on this website are provided by:Convenies LLC
30 N Gould St Ste R
Sheridan, WY 82801
United StatesMakasu is a brand and professional practice operated by Convenies LLC.
The content of this website is provided for general informational purposes only.Nothing on this website constitutes legal, financial, or other professional advice unless expressly agreed in writing.The presentation of information on this website does not constitute an offer to enter into a binding contract.
Convenies LLC offers professional consulting and system design services, including but not limited to system analysis, advisory services, and custom software design.The specific scope, deliverables, timelines, and compensation for any engagement will be agreed upon separately, in writing, before services commence.No obligation to provide services arises solely from a request or inquiry.
The System Clarity Session is a professional, time-limited advisory service intended to assess workflows, data structures, and system requirements.Unless otherwise agreed in writing:
• the session does not include implementation work
• no guarantee of outcomes or recommendations is provided
• the session does not create an ongoing service obligationThe session may be offered free of charge or for a fee, as stated at the time of booking.
Professional services are provided on a best-effort basis.Convenies LLC does not guarantee specific outcomes, business results, or technical solutions.Decisions based on advice or analysis provided remain the sole responsibility of the client.
All content on this website, including text, structure, and design, is protected by applicable intellectual property laws.Unless otherwise agreed in writing:
• no rights are granted to reuse, copy, or distribute website content
• any deliverables created as part of a paid engagement are governed by the terms of that engagement
To the maximum extent permitted by applicable law, Convenies LLC shall not be liable for indirect, incidental, or consequential damages arising from the use of this website or professional services.Liability for direct damages is limited to the amount paid for the specific service giving rise to the claim.This limitation does not apply where liability cannot be excluded by law.
This website may contain links to external websites.Convenies LLC has no control over external content and assumes no responsibility for third-party websites or services.
Information shared during inquiries or professional engagements will be treated as confidential, unless disclosure is required by law or explicitly agreed otherwise.
These Terms of Service are governed by applicable laws.Mandatory consumer protection provisions remain unaffected.
These Terms of Service may be updated from time to time.The current version is always available on this website.
For questions regarding these Terms of Service, please contact:Email: [email protected]