The AI-native bank operating system
Run the whole bank on one system. Start with one workflow.
Nucleus BankOS is a complete bank operating system: core ledger, deposits, lending, payments, risk and AI on one record. Most banks start beside their existing core with one workflow, then move the rest on their own timeline.
Now selecting five community banks as design partners.
Nucleus BankOS demo environment: simulated institution and data.
- Core ledger
- Deposits
- Lending
- Loan servicing
- Payments
- Wires
- Cards
- Treasury
- Wealth
- Banking-as-a-service
- Digital assets
- Fraud
- BSA / AML
- Cyber
- Compliance
- GL & accounting
- Teller & branch
- CRM
- Customer support
- Product builder
- AI workers
- Executive dashboards
- Regulator console
- Conversion
9 → 1
Every system a bank runs, on one platform
~40%
Modeled core OPEX reduction
<90 days
Demonstrated conversion timeline
1:1
Your own platform, built around how your bank operates
Cost and timeline figures are modeled or demonstrated in controlled environments, not audited customer results.
One platform
Everything a bank does. One record.
Run the bank
Conductor puts every queue and exception — deposits, wires, branch, servicing — in one live console.
Lend
Foundry takes a loan from application to servicing, with AI workers that act inside your credit policy.
Defend
DarkMatter brings fraud, cyber, BSA and compliance signals into one case, one identity, one audit log.
Decide
Exec Center and CLARA connect the operating picture to the record behind it — and to the next action.
Try it — real decision code, simulated applicants
An AI credit analyst with a job description. And a person with the final say.
Your bank writes the limits: how much, which products, which ratios. Inside them, the AI worker decides and shows its reasons. Outside them, it stops, says exactly which limit it hit, and hands the file to an underwriter.
Start from
Sarah Parker
Consumer auto · 2025 SUV, new · $38,000 over 60 months
Debt-to-income
35.9%
Loan-to-value
90.5%
Est. payment
$769
Risk score
4 / 100
Underwriting findings
No policy exceptions raised. Credit score 742, income $96,000.
Credit policy 2026-04-25.v1 · evaluated by the same engine the officer’s underwriting tab uses
Runs the same underwriting and authority logic as Nucleus BankOS Foundry. Applicants are simulated and the limits shown are example settings each bank configures. AI decisions stay within the limits your credit policy sets; anything else goes to a person.
Inside Nucleus BankOS
See the work, not the slideware.
Conductor
Every queue and exception, live, in one place.
Deposits, wires, accounting, branch, relationship management and customer service share one console and one customer record, so work moves without re-keying or handoffs between systems.
- Deposit exceptions
- Wires
- GL posting
- Teller & branch
- Customer service
- RM & CRM
Foundry
From application to servicing, governed end to end.
Consumer, commercial and specialty lending on the same ledger. AI workers prepare and decide routine files within the limits your credit policy sets; everything else goes to an officer with the analysis attached.
- Origination
- Underwriting
- Credit intelligence
- Covenants
- Servicing
- Adverse action
DarkMatter Synergy+
One attack shows up in three departments. See it once.
A suspicious login, an unusual wire and structured cash-outs land in cyber, fraud and BSA. Synergy+ correlates them into one case, records who decided what, and drafts the narrative for analyst review.
- Fraud
- Cyber
- BSA / AML
- Compliance
- Case management
- Audit trail
Exec Center
The operating picture, without waiting for month-end.
Deposit flows, concentration, pipeline and liquidity on live data — with the record behind every number, and actions that land in the audit trail.
- CEO brief
- CFO
- COO
- CRO
- Regulator console
How you get there
Start beside your core. Finish on Nucleus.
Nucleus runs alongside the core you have. Agree the system of record and integration boundary for the first workflow, then move the rest on your timeline.
Your customers
One experience. They never see which system served them.
Nucleus BankOS
Runs beside, in production
- New products, launched in minutes
- Selected deposit & lending workflows
- Fraud, BSA and cyber on what it can see
- Real-time ledger and exception queues
Customer master
synchronized
Your existing core
Keeps running
- System of record, untouched
- Existing GL and statements
- Settlement on current rails
- Your current contract, still running
01 · Start
One workflow, in production
Nucleus runs beside your existing core, on real operations. Your core keeps running.
02 · Expand
Move more of the bank over
Add workflows as each one proves out. The customer master stays in sync, with no upcharge for side-core mode.
03 · Convert
Run the whole bank on Nucleus
Convert the core when the economics say so — on your timeline, or never.
No cutover weekend, no forced conversion date, no upcharge for side-core. Same platform at every step: side-core isn’t a lighter product.
How side-core deployment worksThe economic case
Less duplicated work. A clearer operating picture.
Disconnected systems turn everyday banking into handoffs, duplicate entry and reconciliation. Nucleus brings the work and its context together.
Build your business case01
Resolve work without rebuilding the context
The relationship, the exception and the responsible team in one workflow, instead of pieced together across tools.
02
Find the costs you can actually remove
Identify duplicated work and contracts you can retire, and weigh them against platform, integration and transition costs.
03
Connect intelligence to the next action
Move from an insight to the underlying record, with review and authority kept with the people accountable for the decision.
04
Start with the workflow that matters
Lending, operations, investigations or a customer journey. Your existing core keeps its agreed role while you evaluate.
Potential benefits, not measured customer outcomes. Your costs, contracts and operating requirements determine the case.
Start with your priority
Bring the question you own.
CEO & board
Economics, control, and a path off the core on your timeline.
CFO
Model the cost to operate with your own contracts and numbers.
COO
Fewer handoffs, live queues, measured throughput.
CRO & CISO
One identity, one audit log, an examiner-ready record.
CIO & CTO
Architecture, integration boundary and deployment model.
Or browse illustrative workflows by scenario — hypothetical examples with the measures that would establish the case.
Built by banking operators
People who have carried the responsibility you carry.
Endré Jarraux Walls
Founder & CEO
Zia Karim
Co-Founder & CTO
Bob Diegel
Co-Founder & Strategic Advisor
Diane McCracken
Co-Founder & CSO (Security)
Michael Day
Chief Financial Officer
What does adapfin do?
adapfin is an AI-native core banking technology company. It improves the economics of banking for banks, credit unions, and embedded finance providers through Nucleus BankOS — lowering total cost of ownership, consolidating third-party systems, and giving institutions more control over their operating future.
What is Nucleus BankOS?
Nucleus BankOS is adapfin’s AI-native, customer-journey-driven bank operating system. It unifies core banking, operations, lending, servicing, fraud, compliance, and customer intelligence on one foundation, and can replace an incumbent core or run alongside it.
What is an AI-native core banking platform?
An AI-native core banking platform embeds AI in the core data model and workflows from the start, rather than bolting it onto a legacy system. This lets institutions automate operations, ground decisions in one source of truth, and change products quickly.
What is side-core deployment?
Side-core deployment runs a modern core alongside an institution’s incumbent core in production. Banks can validate workflows, controls, data, and economics on selected products before committing to a full-core replacement.
How does Nucleus BankOS improve bank economics?
By consolidating overlapping vendor contracts, core IT, data, risk, and customer-experience systems onto one platform, Nucleus BankOS models core operating cost reductions of approximately 40% while speeding product delivery and strengthening control.
Can Nucleus replace Fiserv, FIS, or Jack Henry?
Yes. Nucleus BankOS is a full core banking platform that can replace incumbent cores such as Fiserv, FIS, or Jack Henry — or run side-core alongside them until an institution is ready to migrate.
Is Nucleus BankOS a full core or a side-core?
Both — it is the same platform. Banks can start side-core, beside their existing core, and convert to Nucleus as their full core when ready; the destination is the full core.
Can Nucleus run alongside an existing core?
Yes. Through side-core deployment, Nucleus BankOS runs in production alongside an existing core, real-time aligned, so institutions can move workloads on their own timeline instead of in a single high-stakes cutover.
Who is Nucleus BankOS built for?
Nucleus BankOS is built for community and regional banks, credit unions, and embedded finance providers that want to lower operating cost, consolidate vendors, and modernize without losing control.
Your next step
Start with one workflow. Plan for the whole bank.
Meet the founders for a demonstration on your use case, a review of integration needs, and a practical first step for your institution.