Case studies, written honestly
Each of these describes what was actually wrong, what we built, and what changed as a result. Client names are anonymised until we have written approval to reference them.
- Utilities2024
Replacing spreadsheet billing for a regional water utility
A full commercial platform covering meter reading, tariff calculation, invoicing and mobile money collection for a utility serving tens of thousands of connections.
- Next.js
- TypeScript
- Flutter
- Node.js
- Services2024
Consolidating HR and payroll across distributed sites
One employee record and one payroll run replacing site-level spreadsheets and a legacy payroll package.
- Next.js
- TypeScript
- Node.js
- PostgreSQL
- Financial Services2025
Automating document intake with AI-assisted extraction
A retrieval and extraction pipeline that reads application documents, structures the data and routes uncertain cases to a human reviewer.
- Next.js
- TypeScript
- Python
- PostgreSQL
- Retail & Distribution2025
Strangling a legacy ERP without stopping operations
Incremental replacement of an unmaintainable ERP, one capability at a time, with both systems running in parallel throughout.
- Node.js
- TypeScript
- PostgreSQL
- Kafka
- Infrastructure2023
Offline-first mobile app for field operations teams
A field application that works with no signal at all and synchronises deterministically when connectivity returns.
- Flutter
- Dart
- Node.js
- PostgreSQL
- Public Sector2025
One governed set of numbers for the executive team
A warehouse, semantic layer and dashboard suite replacing departmental reports that disagreed with each other.
- Next.js
- TypeScript
- PostgreSQL
- Python
What clients tell us
Quotes are anonymised at our clients' request until each reference is formally approved.
“They spent the first two weeks understanding how our billing actually worked before proposing anything. That is not what we were used to from software vendors.”
“Every sprint ended with something we could open and click. We knew where the project stood at all times, which made the budget conversations straightforward.”
“The handover included documentation our own engineers could work from. Six months on, they are extending the system without us calling anyone.”
Your project could be the next one here
Bring us a problem that has resisted a couple of attempts already — those are the ones we do our best work on.
Or email walter.mussagy@gmail.com — we reply within one business day.