Software for billing, data and processes that adds up.
Tailored systems for organisations that have to rely on their software. A senior team, one point of contact, no hand-off to third parties.
- Fixed price per stage
- You own the source code
- One point of contact who does the building
- Evidence in procurement-ready form
Does this sound familiar?
Six situations that bring companies to us. Each has a service that solves it.
A tariff change takes weeks because pricing logic is scattered through the code and nobody knows every place.
Billing systems →Data moves between systems by CSV export and import, and every run is a gamble.
Data integration and interfaces →Every department has its own numbers, and in the meeting none of them agree.
Data analysis and reporting →The off-the-shelf package covers 80 per cent, and the remaining 20 per cent cost hours of rework every week.
Custom software →Two suppliers have quoted, and the quotes differ by a factor of three, and nobody knows why.
Technical concept and requirements analysis →The original developer can no longer be reached, and the system runs as long as nobody touches it.
Maintenance and operations →Ten sources, ten formats, one data model.
Your data comes from ERP, CRM, spreadsheets, partner files, emails and PDFs. Someone copies it across by hand and fills in reports, month after month. We build data pipelines that do this automatically: read, validate, normalise, merge. The result is a model that adds up and reports that are ready in the morning.
- Every source, every format: files, databases, interfaces, legacy systems.
- Validation rules and an error log instead of silent mistakes in the spreadsheet.
- Runs overnight and only speaks up when something is wrong.
Seven services that belong together in practice.
Offered and invoiced like a schedule of services: every item with a unit and an acceptance criterion. A billing system needs interfaces, interfaces need validated data, and all of it needs someone who keeps it running.
01Billing systemsStage · fixed priceDemo, acceptance report
Pos. 01 · Billing
Billing systems
Tariffs, contracts, usage data, invoice runs, dunning. Billing that stays correct with large data volumes and does not break when tariffs change.
More about this service →02Data integration and interfacesStage · fixed priceRun with error log
Pos. 02 · Interfaces
Data integration and interfaces
ERP, CRM, billing, external partners. Data flows that are traceable, validated and automated, with an error log and notifications.
More about this service →03Data analysis and reportingStage · fixed priceReport with data lineage
Pos. 03 · Metrics
Data analysis and reporting
Raw data becomes reliable numbers: reports, KPIs, forecasts with documented assumptions. One number, one origin, traceable to the source.
More about this service →04Custom softwareStage · fixed priceDemo, acceptance report
Pos. 04 · Custom software
Business applications and portals
Customer portals, internal business applications, workflows that currently live in spreadsheets and email. From the first sketch to the running system.
More about this service →05Technical concept and requirements analysisLump sumConcept document
Pos. 05 · Concept
Technical concept and requirements analysis
Requirements, architecture, effort, risks. A concept that lets you decide and put the work out to tender, with or without us.
More about this service →06NIS2 compliance (Austrian NISG 2026)Lump sum · stageList of measures, incident reporting process
Pos. 06 · NIS2 · NISG 2026
NIS2 compliance
Inventory, technical measures, incident reporting process with the 24-hour, 72-hour and one-month deadlines, documentation for registration and suppliers.
More about this service →07Maintenance and operationsMonthly · cancellableMonthly report
Pos. 07 · Operations
Maintenance and operations
We look after what we built and take over systems whose developers can no longer be reached. Monitoring, updates, backups, agreed response times.
More about this service →How a project runs.
Four stages, each accepted and invoiced on its own. Fixed price per stage, weekly demos, documented decisions.
Stage 1
Requirements analysis
Clarify with the business units and IT what the system must do and which data and interfaces exist.
Acceptance: requirements list · fixed price
Stage 2
Concept
Architecture, stage plan, effort and risks. In writing, as a basis for decisions and tenders.
Acceptance: concept document · fixed price
Stage 3
Implementation
Stages of four to eight weeks, each with a demo and acceptance. Source code and documentation belong to you.
Acceptance: demo · acceptance report
Stage 4
Operations
Monitoring, updates and agreed response times. Handover to your team is possible at any time.
Term: monthly · cancellable
Security is not an add-on. It is part of every implementation.
This is how we built systems for large telecommunications and transport companies over many years, and how we still build them. Our systems therefore meet what NIS2-regulated clients require of their suppliers.
Always current
Runtime, libraries and base images are updated continuously, not only when the next project comes along.
Scanned automatically
Every container image and dependency is checked for known vulnerabilities in the pipeline, before every deployment.
Roles and permissions from day one
A roles and permissions model is part of the concept, not an afterthought. Who may see what, and who may change it, is documented and tested.
Application tested
Security analysis of the whole application: attack surface, inputs, sessions, interfaces. Preparation for external audits.
Data protected
Sensitive fields encrypted, access logged, backups tested. A clear record of who accessed what, and when.
The tool for the task, not for fashion.
A single server, public cloud, a container platform or your own data centre. Not tied to any vendor, chosen on performance, operations and cost over the system's lifetime.
- Single serverFor one department's business system.
- Public cloudWhen load peaks and regions matter.
- Container platformFor corporate platforms with set standards.
- Own data centreWhen data must not leave the building.
Industries we know from the inside.
Hover over a drawing: it redraws itself.
Kontor24, our own auction platform.
Online auctions in Austria with verified bidders, automatic bids and audit-ready documentation. Bilingual, built by us and run on our own infrastructure.
View project
Market data platform, trading in microseconds.
Analytics platform for crypto and prediction markets: ingest data streams that never pause, aggregate, analyse mathematically, trade automatically. In Rust, with zero-copy processing. Adaptable, licensable, rentable.
View projectA 30-minute call is enough.
- No obligation
- Fixed price per stage
- You talk to a developer
Vienna · Austria