maheviAlexander Schaffer — AI Product Architect & Engineer

Complex problems. Working solutions. Tangible.

I turn complex business processes, data and domain knowledge into working digital solutions.

From concept and domain model to architecture, AI, frontend, backend and cloud – without the overhead of a traditional development team.

  • AI & Document Intelligence
  • Financial Systems
  • Product Engineering
  1. Domain understanding
  2. Domain model
  3. Product architecture
  4. Engineering
  5. AI-assisted implementation
  6. Production
What I solve

Problems that are hard to understand – not just hard to code

Technology is the tool, not the product. Every project starts with a business problem.

AI & Document Intelligence

Unstructured documents and information become reliable, structured knowledge – using LLMs, deterministic rules, provenance, validation and human clarification where the machine is unsure.

  • Extraction
  • Provenance
  • Validation
  • Human-in-the-loop

Financial & Analytical Systems

Calculation-intensive systems with cashflows, interest rates, scenarios, margins, risk and complex business rules – correct in substance, traceable and fast.

  • Cashflows
  • Interest
  • Scenarios
  • Risk

Complex Business Applications

Processes currently spread across Excel, PDFs, email and disconnected applications become one integrated solution.

  • Processes
  • Integration
  • Workflows
  • Multi-tenant
The difference

AI makes implementation faster. Understanding the problem remains challenging.

I understand complex problems, model them correctly and use modern engineering and AI to turn them into working products unusually quickly. AI is a multiplier – not the product.

  1. Domain understanding
  2. Domain model
  3. Product architecture
  4. Engineering
  5. AI-assisted implementation
  6. Production
Selected work

What I have built

Five examples – from understanding complex documents to income-and-expense accounting as SaaS.

AI & Document Intelligence

Document Intelligence Platform

Complex documents become reliable, structured knowledge – with provenance, rules, conflict detection and human clarification.

  1. Documents
  2. Layout understanding
  3. AI extraction
  4. Deterministic rules
  5. Structured knowledge
  6. Conflict detection
  7. Human clarification
  8. API & data
Read the case study →
AI & Document Intelligence

Contract analysis with external sources

Contracts checked against registers, party data and internal records: conflicts of interest and contradictions become visible – and go straight into the internal review process.

  1. Contracts
  2. External sources
  3. Parties & clauses
  4. Conflicts of interest
  5. Contradictions
  6. Review & approval
  7. Internal workflows
Read the case study →
Learning & Compliance

Microlearning – continuous learning, reliably up to date

Continuous learning instead of mandatory training every two years: rulebooks and new developments become short learning chapters, questions are answered, exam questions created and knowledge tested and documented – so everyone is reliably up to date.

  1. Rulebooks
  2. Structure
  3. Learning chapters
  4. Questions & answers
  5. Exam questions
  6. Test knowledge
  7. Tested, documented, current
Read the case study →
Financial Systems

Financial Engineering

Cashflows, interest, schedules, scenarios, margins and risk – calculation-intensive systems where domain expertise and software have to fit together.

  1. Contracts & terms
  2. Cashflow model
  3. Interest & repayment
  4. Scenarios
  5. Risk & IFRS 9
  6. Planning & reporting
Read the case study →
Product Engineering

Income-and-expense accounting with builders for quotes, contracts and invoices – in one week

Accounting as SaaS: quotes, contracts and invoices in a builder, compliant invoicing with e-invoices and signatures, receipts and income-and-expense accounting – in one week, mostly assembled from existing building blocks.

  1. Domain model
  2. Existing building blocks
  3. Quote · contract · invoice
  4. Compliant invoicing & e-invoice
  5. Receipts & payments
  6. Income-expense & VAT return
Read the case study →
Technology & AI Transformation

Strategy grounded in implementation.

I help companies turn technology and AI opportunities into real business transformation.

  1. Strategy
  2. Organisation
  3. Architecture
  4. Execution

AI transformation is not primarily a technology challenge. It requires organisations to rethink established processes, architectures, roles and ways of working. Approaches that made sense when software was expensive to build may no longer be the right ones when applications, integrations and automation can be created in days.

The biggest challenge is often not implementing new technology, but questioning existing assumptions and overcoming established patterns.

I work across strategy, organisation, architecture and execution: analysing existing models, identifying where they should be simplified or fundamentally redesigned, defining a pragmatic target state and helping teams implement the change.

My combination of business and financial domain expertise, technology architecture, engineering leadership and hands-on development allows me to connect strategic transformation with technical reality.

Rethink the model. Transform the organisation. Turn strategy into execution.

Services

How we work together

Three formats – from the first working product to technical leadership.

Product Sprint

From business problem to working product.

Analyse the problem, establish the domain model, design the architecture and quickly build a first working version – something you can use and show, not slides.

AI & Automation

Turn documents, rules and repetitive knowledge work into software.

  • Document intelligence
  • AI workflows and agents
  • Structured extraction
  • Knowledge systems
  • Ontologies and knowledge models
  • Human-in-the-loop
  • Process automation
  • AI systems within the AI Act and GDPR

Fractional CTO / Product Architecture

Senior technical leadership without requiring a large internal technology organisation.

  • Architecture
  • Product strategy
  • Technology decisions
  • AI adoption
  • Technical due diligence
  • Regulation & compliance (AI Act, GDPR)
  • Hands-on implementation
About me

Alexander Schaffer

AI Product Architect & Engineer · mahevi

I solve problems that are difficult to understand – not just difficult to code.

My work combines business analysis, domain modelling, product architecture and software engineering – built myself, not just designed.

AI-native development now allows me to turn well-understood problems into working products in days or weeks, where traditional development often required teams and months.

Banking taught me how much compliance matters: regulation and legal requirements – from the AI Act to the GDPR – belong in the architecture from the start. Yes, they cost. But they are not a burden: in the end they protect reputation and resources.

  • Domain expertise
  • Architecture
  • Engineering
  • Product thinking
  • Compliance
  • AI leverage

Tools .NET / C# · Nuxt / Vue · Azure · SQL · OpenAI / LLMs · Cloud

Insights

Current thinking

All insights →

AI transformation is not a technology question

Many processes, architectures and roles were designed for a world in which software was expensive. Introducing AI without questioning those assumptions only automates the old.

Read10/04/2026

Income-and-expense accounting in one week. What this means for SaaS

In one week, an income-and-expense accounting system with builders for quotes, contracts and invoices came together. The remarkable part is not the AI – it is that it was mostly assembly.

Read10/04/2026

LLM extraction isn’t the hard part – modelling the knowledge in context is

A language model reads values from documents remarkably well. The hard part is modelling what was read in context – and when two documents say different things, that is where it is decided whether the system can be trusted.

Read08/25/2026
Lab

Experiments & tools

Small applications and experiments – evidence of breadth, curiosity and the ability to build working software quickly. Try them out.

QR Code Generator

Codes for payments, business cards and links — secured or open.

PaymentvCardSigned Links

Video Hub

Upload, editing and playlists — share via signed URLs.

UploadEditingPlaylistsStreaming

Calculators

Calculate loans and instalments, save them and share them securely.

LoanInstalmentBulk calculation

Questionnaire

Dynamic questionnaires and tests, distributed via signed URL.

QuestionnairesTestsSigned Url

PDF Editor

Add a QR code and a signature, SHA-256 signed.

QRSignatureSHA-256

Map

Manage locations, images and GPS data — as a floor plan, too.

GPSLocationsFloor plan

Rowing light Tulln – Vienna

Loading the rowing light …
N–kn

Wind in Podersdorf

Loading wind …

Windsurf spots

Wind at more than 60 spots worldwide, measured or forecast – the page opens on the spot nearest to you.

WindsurfKiteWingfoil

Loan application process

Loan calculator, household budget and AI assistants for open questions.

CalculatorBudgetAI assistant

Invoices

Create and send invoices and manage incoming payments — including dunning runs and export.

InvoicingPayment statusDunning

Video recorder

A simple recorder for camera and screen recording and for streaming video.

RecordingScreen recordingStreaming

Video editing

Cut recordings, add titles and subtitles, and export finished videos.

Timeline editingSubtitlesExport
Contact

Got a complex problem? Let’s talk about it.

Tell me in a few sentences what it is about – process, data, goal. We will sort out the rest in a conversation.