The Reconciled Source of Truth.

A note from the founding team on the future of financial operations.

We started Rexi with one clear belief:

The future of FinOps is an invisible, tech-enabled layer—operating in the background with expert precision, human control, and seamless connectivity.

But everywhere we worked, the reality was the opposite.

Product teams shipped with urgency. Engineering teams were stretched thin between feature delivery, tech debt, and internal tooling. And quietly, behind the scenes, finance and ops teams were holding the entire company together with spreadsheets, brittle scripts, and homegrown tools no one wanted to own.

As long as things eventually balanced out, no one looked too closely.

“It’s not great, but it works…. there are other priorities right now”.

Until one day, it doesn’t work anymore.

A stark, and very public example: Synapse. Over $90M in funds went missing due to systemic record-keeping failures between a bank and a middleware provider.

That’s what pushed us to build Rexi: an AI-powered layer that connects to all your systems and continuously reconciles them creating a single, reliable source of financial truth across the entire stack.

Financial Operations Skipped a Generation of Software

Financial operations quietly skipped several tech cycles. Not because it wasn’t important. But because it was too sensitive.

These workflows deal with real money, real customers, and real regulatory exposure. Switching costs are high. Mistakes are expensive. So companies defaulted to what “worked well enough,” even if it was painfully manual and unscalable.

FinOps is and will always be, a “hygiene” process. It can definitely kill you, but it will never set you apart.

The problem with hygiene is that debt compounds. And in fintech, when it breaks, it breaks loudly. It’s money we’re talking about. Someone’s savings.

After Synapse, the industry finally acknowledges what operators have known for years: tracking money across multiple systems is now a critical priority.

Why This Is Possible Now

The future we’re building towards isn’t only spurred by recent developments. Recent advances in Artificial Intelligence made automation economically viable for workflows that were previously too bespoke, too brittle, or too expensive to productize. The ROI is just too big to ignore, and custom workflows reduce switching costs dramatically.

At Rexi, we see AI as a business model enabler. It allows us to:

• onboard complex, ad-hoc data sources dynamically > implementations
• adapt to every company’s unique financial reality > custom workflows
• automate the grunt work without removing control > automation with control
• deliver enterprise-grade precision, without the overhead > performance
• deliver a product that feels like a service > efficiency

In turn, small and mid-market teams who could never afford heavywight vendors, 12-24 month internal builds, or big overhead teams doing grunt work in excel, can now afford enterprise-grade FinOps with Rexi. Operational excellence, democratized.

Why This Is Important Now

For decades, financial services innovated up the stack: products, applications, user experiences, and distribution. We kept on layering abstractions on top of real money movement while leaving the underlying system fragmented across middleware providers and APIs. As visibility eroded and controls weakened, regulatory pressure became inevitable.

In the US, post-Synapse, the FDIC is already proposing clearer requirements around tracking, segregation, and oversight of funds. In insurance, similar pressure is emerging around data lineage, reporting, and control.

This isn’t about slowing innovation, it’s about making sure the foundations can support it.

We’re entering a phase where speed without visibility is no longer acceptable, abstraction without accountability is a liability, and “eventually consistent” is no longer good enough.

The next generation of financial infrastructure will be defined by how well the underlying reality is re-aggregated: safely, transparently, and in real time. That’s the shift Rexi is built for.

What We’re Building at Rexi

Rexi is an AI-native financial reconciliation platform.

At its core, Rexi is a data orchestrator:

• we unify financial sources: banks, processors, ledgers, acquirers, internal systems.
• we parse and standardize formats, time zones, labels, and languages.
• we match and compare transactions in real time.
• we surface discrepancies, measure risk, and identify anomalies before they scale.
• we provide a shared experience with counterparties foster collaboration.

But architecture alone isn’t enough.

We built Rexi around two core principles:

Control must live with the operator, not the vendor.

FinOps workflows are deeply nuanced. There is no single “right way.” Rexi is opinionated where it should be, and fully configurable where it must be.

If you constantly need our help, something in the product is wrong.

Our vision is for you to “hire” the Rexi team of agents, plug it in, and run with it. Safely, transparently, and on your terms.

Safety First: this is someone’s savings.

From day one, we designed Rexi’s orchestration layer to leave nothing unexplained. Every action the platform takes is traceable, every decision auditable, and every outcome inspectable.

Security and compliance aren’t add-ons or checkboxes; they’re foundational to how the system works.

Because in finance, automation without accountability isn’t innovation, it’s risk. Automation with traceability is leverage.

Early Momentum

We started working on Rexi full-time in June-2025, and in just a few months we’re live with paying customers across the U.S. and Latin America, already supporting multi-source, multi-currency, and multi-entity reconciliations at scale.

Early results include:

• 95% reduction in recurrent write-offs
• 80% reduction in manual work
• 3× faster discrepancy resolution
• real-time monitoring that prevents issues before they hit customers

One customer reconciles 100M+ transactions per day. Another one self-onboarded in under two weeks, with zero engineering dependency.

That’s the bar we’re setting, and we’re just getting started. The best is still ahead, with a long roadmap of ideas already cooking and a massive amount of opportunity and value yet to be unlocked.

The Team Behind It

My co-founders and I have been fortunate:

• education across Harvard, MIT, and Columbia
• years building and operating fintech infrastructure (Mercado Pago, Pomelo, Bitso)
• enough scars to know what not to build

But the thing I’m most proud of is the world-class group of engineers and operators that we’ve assembled as our founding team.

Our engineering team is based in Latin America: not as a cost decision, but as a strategic decision. There is extraordinary talent here and we know it personally from working in the region.

Our distribution and product team is based in New York, side by side with our early customers and business partners. We’re in their offices, day in and day out. Helping them transition into the next generation of financial operations and iterating our product with direct and usage-based signal.

Our culture reflects our Latin American roots: we move fast, we hustle, and we care deeply about relationships.

The Bigger Picture

It’s time to transform Financial Operations as we know them. Risk has reached a point where change is needed. And Technology has reached a point in which change is required.

The future belongs to:

• lean, highly leveraged teams (enterprise grade precision, at startup speed)
• human supervised agents handling enablement workflows (leverage and control)
• talent focused on what actually makes the business different (resource allocation)

We’re democratizing operational excellence so every company, not just the biggest ones, can operate with enterprise-grade precision, at startup speed.

What’s Next

We’re here to build a company for the next century, and we’re only getting started.

• Customers: If reconciliation, financial hygiene, or operational risk is slowing you down, we should talk.
• Partners: Especially payment infra providers looking to embed these workflows into their platform, let’s talk.
• Talent: If you want to build the future of financial operations, we’re hiring.

Dive head-on into the future of Financial Reconciliation. Book a demo.