Purchases, inventory, finance, in the palm of your hand.Purchases by invoice, jobsite inventory, daily log and issues over WhatsApp, change orders and finance for each project in one system. AI works inside the operation, and a team supports your management.Labor rose more than materials.

9,23% rise in construction labor costs in 2025 (FGV IBRE, INCC-M for December 2025)

3,75% rise in materials and equipment the same year (FGV IBRE, INCC-M for December 2025)

2% to 9% of the project's value is lost to rework (Lucio et al., 2016, via UTFPR)

3.05M formally employed construction workers in August 2025, the most since 2014 (CBIC on Novo Caged, 2025)

The jobsite posts in the group. The office doesn't see it.The foreman sends voice notes on WhatsApp, the supplier's invoice arrives via Gmail, inventory lives in Excel and the daily log in a folder. The issue exists, but no one owns it.A stalled work front weighs on your cost.With labor more expensive, every day a work front is stalled weighs on cost, and the delay starts with an issue no one owns.

Rework: Rework costs 2% to 9% of the project's value.

Issue: The message stays in the group, with no owner, and the work front stops and waits.

Materials: Material shortages come in by phone, and the purchase goes out late.

Change order: The client asks for a change, the work gets done, and the change order is never approved.

Every project workflow, digitized.From purchasing to the daily log, from one project to many. Every workflow in one system, with the information within reach of whoever decides.

Purchases by invoice: The supplier's NF-e comes in with project, item and amount, no typing.

Purchase request: A material shortage becomes a request with approval, or an order in Sienge.

Jobsite inventory: In by invoice, out by work front, and the balance of each project.

Delivery checked: The material arrives, the foreman checks it over WhatsApp and the issue closes.

Daily site log: The log comes out ready from the day's issues, photos and deliveries.

Finance by project: Payables and receivables for each project, with the statement reconciled.

Client change order: The client's request becomes a change order with a price and approval via link.

WhatsApp message: The foreman sends text or a photo, and AI proposes the issues.

Issue with an owner: Every issue with an owner, deadline, photo, project and work front.

Follow-up until closed: If not closed on time, the issue goes back to the owner and up to the engineer.

All projects: Issues by project, work front and urgency on one screen.

AI assistant: Ask what's been stalled for 3 days in tower B.

Out of material, the purchase goes out with approval.The material issue becomes a purchase request, with quantity and project. The person in charge approves, the supplier's invoice goes into the project's finance, and the checked delivery adds to inventory.The daily log comes out ready at the end of the day.The day's issues, photos and deliveries become the project log. The engineer reviews and signs, and the history is stored by project.The foreman's message becomes an issue with an owner.The foreman sends the message on WhatsApp, as text or a photo. AI splits out the issues, with item, work front and urgency, and the engineer reviews and assigns in one tap.The issue is followed up until it closes.Every issue has an owner and a deadline. If it isn't closed on time, CERNE reminds the owner and, if it still doesn't close, alerts the engineer. The work front doesn't sit idle waiting for someone to remember.The client's request becomes an approved change order.The client asks for a finish change. The engineer logs it, CERNE adds up material and labor, and the client approves via link. The amount goes into the next invoice.Built with modules already running at clients.The construction package starts with an assessment of your project and uses modules already running at CERNE clients: the board with owner and deadline and approval before any order. The first builder in the sector becomes the package's reference.From the first project to a construction company.No system yet? CERNE becomes the project's system: purchases by invoice, jobsite inventory, daily log, issues, change orders and finance for each project.Already use Sienge, UAU or Mega? Budgeting and accounting stay there. CERNE integrates via API and handles the jobsite, issues and change orders on top.Larger builders get special terms.

Purchases by invoice

Requests with approval

Jobsite inventory

Checked deliveries

Daily log

Finance by project

Client change orders

WhatsApp messages

Issues with owners

Follow-up and escalation

Multi-project view

AI assistant

Integrations: Sienge, UAU, Mega, OrçaFascio, Conta Azul, WhatsApp, Google Drive.Start with an assessment of your operation