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Construction management system, from tender to warranty

Construction projects worth millions often run on Excel and WhatsApp. Together with co-founders from a contracting company, I built a system where the office and the crew work on the same data.

Role
Co-founder, product and development
Scope
Office panel and a mobile app for the crew
Status
In production since June 2026
Voltiq screen comparing a subcontractor's quote with the cost estimate

The problem

Friday, 5 pm. A site manager calls subcontractors one by one to find out how much they have really done, because Monday's progress report is due. The estimate lives in Excel, tasks live in phones, and site photos get lost in chat.

The estimate becomes the source of truth

The tender estimate from the investor's Excel file goes into the system and defines the scope and value of the project. Nobody retypes it by hand.

Tender table imported from an Excel file

The site runs from a phone

The crew sees their tasks, uploads photos and reports progress on site. Subcontractors quote through a plain link with no account, because every required login kills adoption on site.

Task list with an assigned contractor and site manager

Billing follows the work

The progress report is calculated from what was reported on site. Completion and value appear automatically, so billing no longer starts with a round of phone calls.

Progress report with automatically calculated value

Data from a live contract

1,565
phone photos in one site survey task
360
cost items loaded from the investor's Excel
198
tasks on site
7
people using the mobile app

What it taught me

On a construction site the hardest people to win over are not in the office, they are the crew. That's why every feature starts from a problem on a specific site, not from market analysis.

What it's like to work with me

Have a complex product to untangle?