They vanished halfway through.
The project stopped halfway through, and the money was already gone.
We build your system. And we protect it from the first line.
Requirements before code, a cybersecurity team working since 1994, and your project documented from start to delivery.
Tell us your idea on WhatsApp
The first step is a conversation to understand what you need.
9 years
leading SLZ Digital
1994
team in cybersecurity since
Confidentiality
and security, under a non-disclosure agreement
4 languages
for service
Tried before and it went wrong?
The three stories we hear most from people who have hired a software provider before.
They delivered and never answered again.
The first problem appeared, and no one was on the other end.
Only the vendor understood the system.
Every change depended on the vendor, and switching became a bigger problem than the original one.
We designed the way we work so none of this happens.
Solutions with fast delivery — SaaS, systems and apps: solutions for your business.
A defined scope and staged delivery: you see your system working before the project ends.
For: Business owners · Companies · Public sector
01CRM and AI customer service
AI handles the conversation. The CRM records it all.
This is not a menu bot with “press 1”: AI talks, understands what the customer wants and responds. Every conversation becomes a record, with history, an owner and the sales stage. Stop losing business because a message stayed on someone’s phone.
02Dashboards and metrics
Your numbers ready before you ask.
Instead of someone building a report every Monday, the dashboard updates itself. Open it and decide.
03Process automation
Repetitive tasks leave your team’s hands.
We automate what repeats. The hours spent on it go back to work that generates revenue.
04ERP systems
One number everyone can trust.
When each department keeps its own records, stock conflicts with finance. An ERP brings sales, inventory and finance into one database.
05System integration
Enter data once. See it where you need it.
Stop entering the same sale in your system, spreadsheet and finance tools. We connect everything and end the duplicate work.
06AI-built system rescue
Your AI-built system, reviewed by security specialists.
Launched with flaws or stalled because nobody knows how to continue? We examine what exists, show the risks and deliver a correction plan in priority order.
Our services
Everything SLZ builds, maintains and protects, end to end.
Development
- Custom systems
- SaaS platforms
- Apps
- APIs and microservices
Operations and data
- CRM and WhatsApp customer service
- Dashboards and metrics
- ERP systems
- Process automation
Integrations
- System integration
- Cross-tool automations
- Single data entry
Artificial intelligence
- AI agents and automations
- AI-generated code review
- AI-built system rescue
Security
- Platform security testing
- Access and data review
- Privacy and LGPD by design
Before coding
- Requirements gathering
- Scope and priorities
- Project documentation
After launch
- Support for your team
- Support included in the project
- Monthly support
Our first case is our own.
Before selling software to anyone, we built the systems that run our own agency.
See our systems from the inside.
SLZ Flow
The system our team built and uses every day to run the agency: requests by department, deadlines, owners and approvals in one place.
MARK
Systems video
Meet the founder
Marketing and technology led with international experience
9 years
in the market
5 years
of experience abroad
Diego is a business administrator, entrepreneur and marketing and sales specialist. He lived abroad for five years, gaining international experience and working at multinational companies. After nine years leading SLZ Digital, he heads a team serving small, medium and large businesses.
Talk to Diego on WhatsAppFrom requirements to delivery, you follow every step.
Many people know what they want, but not how to turn it into software. Coding is only part of the job: before writing the first line, we understand your business and define what will be built.
- 01
Requirements
We understand your business
We talk about your operation, real problems and what the system needs to solve. Who will use it, what data it stores and what it connects to.
“I want a system to manage my inventory.”
Deliverable: requirements document
- 02
Scope & risks
We define what's in and what's out
We turn requirements into a clear scope and map risks, including security and privacy.
Deliverable: defined scope and mapped risks
- 03
Build
We build in stages, with security in each one
The team develops in short cycles, with cybersecurity reviewing the code along the way.
Deliverable: working versions for you to test
- 04
Launch
We go live securely
We publish the system and check access, keys and data protection before opening it for use.
Deliverable: system live
First step: a discovery conversation
You tell us the idea, even if it's incomplete, and we help organise what the software needs to do.
Tell us your idea, even if it's incompleteAfter launch, we don't disappear.
The end of development is not the end of the work.
01
We support the people using it
After delivery, we support the team using the system every day and check that what is live matches the agreed scope.
02
Support included in the price
The project price includes 60 to 90 days of support, depending on the project. You do not pay extra to resolve issues that appear during that period.
03
When the period ends, you choose
You can keep your own team looking after the system or hire our monthly support. Both options remain open, and what each model includes is written in the contract.
Everything we build is documented.
From requirements to delivery, what was decided and built is recorded. That way, your system doesn't depend on one person's memory.
Security at every stage, from idea to launch
Today it's easy to get a system live quickly. What doesn't always come with it is someone looking after security: without that, taking the system down or reaching your customers' data is simpler than it seems. That's why we have a cybersecurity team.
Our team has worked in cybersecurity since
1994
What we ask at every stage
- 01
Planning
What data enters the system, and who can see each piece?
- 02
Code
Has a person reviewed what was written?
- 03
Access & data
Does each user see only what belongs to them?
- 04
Release
Are keys and passwords kept outside the code?
- 05
Monitoring
Does someone notice the problem before the customer?
Privacy designed with LGPD and GDPR in mind from the start.
Security testing
Find your platform’s flaws before the wrong people do.
You only discover the flaw when the system fails or data leaks. We look for security flaws before someone exploits them and deliver our findings with correction priorities.
How it works
- 01
Conversation and written authorization
We agree on what will be tested, when and how. Without the owner’s authorization, we do not test.
- 02
Test
We look for platform security flaws within the agreed scope.
- 03
Report
You receive our findings with correction priorities.
- 04
Correction
SLZ also fixes the flaws found, following the report’s priorities and the scope agreed with you.
What the test shows — and what it does not
The test shows the platform’s condition when it was performed, within the agreed environment, method and time. No test guarantees there is no other flaw. We recommend repeating it after important changes to the system.
Golden rule
We only test platforms with the owner’s written authorization.
Among 42 Brazilian companies that suffered a breach, the average cost was R$ 7.44 million².
We work with companies anywhere in the world.
Global team and partners. We can talk in Brazilian Portuguese, European Portuguese, Spanish or English.
BrazilIrelandUruguayServing clients anywhere in the world
Frequently asked questions
How long does a project take?
It depends on the size and complexity of the system. The timeline is set after requirements gathering, together with the scope and the quote, and is recorded in the project document before any code is written.
How do you arrive at a quote?
The quote comes after requirements gathering. Before that, any figure would be a guess. In the first conversation we understand what the system needs to do, turn that into a scope and only then present the price and timeline.
I only have an idea and do not yet know what I need. Is that enough?
Yes, and it is the most common starting point. Requirements gathering exists for this: we discuss your operation and turn the idea into a document describing what the software will do.
Can the scope change mid-project?
Yes, because software projects evolve. When a change comes up, we assess its impact on time and cost and present it before proceeding. Nothing is added without you knowing what changes.
Do you use AI to write code?
We use AI as a tool, like almost everyone today. The difference is what comes next: developers review every piece and our cybersecurity team checks it before it goes live. AI speeds things up, but does not take responsibility. The most recurring issue in projects built with AI tools is data access: who can see what. That is the first thing we review.
Is there support after delivery?
Yes, and it is included in the project price for 60 to 90 days, depending on the project. We also support the team using the system and check that what is live matches the agreed scope. After that, you can hire monthly support, with remote access, day-to-day adjustments, a monthly video call and small improvements.
How do you handle personal data and LGPD?
We handle personal data in our projects following LGPD and GDPR good practices: we map which data the system collects, who can access each item and how long it is kept. These decisions go into the project document. Full compliance for your company also depends on your internal processes and your legal counsel.
If the system works, is it already secure?
Working and being secure are different things. In a study presented at ICML 2026, over 70% of AI-agent-generated code that passed functional tests still had exploitable flaws. That is why security review is separate from functional testing.
My system is small. Will someone really try to attack it?
Automated attacks scan the internet for open doors without choosing a target. Company size does not protect you. Among 42 Brazilian companies that suffered a breach, the average cost was R$ 7.44 million.
Tell us what you need.
The conversation starts on WhatsApp.