Modernize legacy systems using AI with 26 years of built-in experience! Agentic Engineering with human governance.
DB1 Itênex modernizes the critical systems that run your business with an AI-accelerated method: up to 92% faster than manual rewriting on complex legacy projects, under engineering governance and human validation.
Banking, brokerage, healthcare, sanitation and retail. Critical operations that cannot stop.
26 yearsbuilding critical software
16 millionpeople use what we built
+6,500B2B clients across DB1 Group
Why DB1 Itênex
Everyone promises to modernize with AI. The difference is here.
The promise only DB1 makes
Software that does not turn into legacy again.
Architecture that handles tomorrow’s volume and absorbs business change without demanding a refactor. And technical debt does not grow back: continuous production monitoring holds what was modernized. No other approach on the market makes that promise.
Scalehandles the volume that is coming
Resiliencebehavior proven in production
Evolvabilitychanges with the business, without a rewrite
3×lower maintenance cost after modernizing with Core Up.
With Core Up: low and stableWithout method: climbs back up
What holds that promise up
0operational outages
Core Up, the proprietary method
We modernize and build critical systems with AI agents, engineering governance and human validation at every step, without stopping the operation.
97%right the first time
Real governance, not loose AI
All AI-generated code goes through human review and an auditable trail. We hold CMMI DEV/3, a certification very few software companies in Brazil have.
40%less time
Code in production, not a report
Software genuinely running in finance, utilities, education and healthcare: transactions settling, 16 million people served, no mocks and on time.
The invitation
You can build software the old way. But why would you?
Getting out of the old way does not start by rewriting anything. It starts by understanding what you already have. In 26 years modernizing critical software, it has always started there. That is what the Legacy Analyzer does with your legacy: the root cause of the problems in the code, the bottlenecks in your engineering processes and an action plan to apply right away.
DB1 Legacy Analyzer · free access by email
Measured engineering
Numbers from people who deliver, drawn from real cases.
Everything comes from the hours our teams log and the deliveries they record, one delivery at a time.
+1.8million engineering hours
logged on client projects since 2022.
93%of deliveries on time
Out of every 100 deliveries, 93 arrive on the agreed date.
97%right the first time
Fewer than 3 bugs per 100 deliveries.
4.9/5client rating
Average of more than 9,000 delivery ratings.
Deliveries per year65,000+ deliveries since 20202026 through October.On-time deliveriesFrom 80% to 93% in six yearsDashed line: DB1 Group target.Bugs per 100 deliveriesHalf the 2022 rateCounts bugs found in staging and in production.
Proprietary method
Core Up: modernizing critical software with Agentic Engineering, without stopping the operation.
The legacy goes out. The new comes in. The operation keeps running.
Our method modernizes and builds complex systems with AI agents, engineering governance and human validation at every transition. Each step produces clear deliverables, reduces risk and keeps the client in control of what goes to production. Here is how it works:
01
Discovery
Agents read the code and the business and map domains, dependencies and the root cause of problems.
Human gate · Discovery sign-off
02
Preparation
Each domain becomes reviewed documentation, and the Harness defines what agents may do. Before any code.
Human gate · Documentation sign-off
03
Specification
Specs, plan, test scenarios and tasks, prioritized to replace the legacy piece by piece.
Human gate · Plan approval
04
Implementation
Agents implement in batches. Engineers review, and security tests run before every merge.
Human gate · Review + SAST/DAST
05
Runtime Intelligence
Agents follow the system in production and keep technical debt from becoming a new legacy.
Human gate · Quarterly review
The Harness is what separates Agentic Engineering from freestyle AI: the contract that defines what agents can and cannot do in your context. Without it, there is no contract. Without a contract, there is no control.
Roberto PadilhaCTO · DB1 Itênex
Meet Runtime Intelligence: the service that monitors your software continuously and keeps technical debt under control, instead of letting it pile up. Technical debt under direct control in production, without becoming a new legacy.
Governance is the architecture
AI with governance. Not freestyle AI.
Everything an agent produces goes through human review and is recorded.
No agent outside the HarnessBoundaries, guardrails and acceptance criteria defined for each client.
Fully traceableEvery delivery linked to its specification and to who approved it. Fewer than 3 bugs per 100 deliveries.
Audit-readyThe trail banks, healthcare and utilities require to adopt AI.
Monitored in productionWith Runtime Intelligence, the software does not turn into legacy again.
Critical software delivered with quality, performance and data security end to end.
Plaenge needed a technical partner able to sustain those three fronts at once, without giving up any of them. DB1 delivered auditable, performant software with the data security the operation requires, without trading technical rigor for speed.
In the age of AI, what is missing is not code. It is control.
Today any tool generates code in seconds, and the market celebrates the speed. But almost nobody asks the question that matters: who vouches for what goes into production? I see companies piling up systems nobody reviewed, nobody understands and nobody controls.
In software that runs a critical business, a mistake is not a bug: it is a halted operation, an exposed client, technical debt that blocks the roadmap for years. Speed without governance is not progress, it is risk outsourced to whoever signed the contract.
At DB1, AI accelerates, but engineering decides. Our agents work under a Harness that defines what they can and cannot do, with a human gate at every transition. The client never loses control of what goes to production.
Everyone promises to modernize with AI. We prove it lasts, with traceability, governance and a senior team that owns the outcome. That is our thesis: speed and control are not a choice.
David SantosCEO · DB1 Itênex
Our own survey
Research: what 103 IT professionals think about AI-written code.
95% trust AI-generated code76% ship nothing without human review
An ecosystem of more than 15 companies built to last generations.
Our brands are organized into ecosystems with distinct histories of innovation and their own path to market leadership through different products.
+R$ 225Mgroup net revenue (2025)
+6,500B2B clients served
+800professionals across the Americas, Europe and India
+25%revenue growth in 2025
26 yearsof history and engineering
New brand
DB1 Global Software is now DB1 Itênex.
The name changed, the people did not. The same senior team, the same clients and 26 years of DB1 Group history, now under a brand built for the AI era.
Culture & recognition
The value is in the people.
Critical software is built by senior people who stay on the team for years, at a company recognized as one of the best places to work in Brazil. That human base is what sustains DB1 Itênex’s Agentic Engineering.
4.6 / 5employee rating on Glassdoor
16 yearscertified Great Place to Work
Fastest-GrowingLatin America · Financial Times 2025
Certifications
Partnerships and accreditations
First conversation
For businesses that need to build new, custom-built software, without inheriting the problems.
Get to know Core Up’s AI First development cycle, from conception on, and how to put an end to the legacy in your software.
30 minutes with our engineering and business team.
No commitment to hire.
You leave with clear next steps, even if you decide not to move forward.
