Fintech App Development Company

Banking, payments, wealth, and crypto apps engineered for real money, real users, and real regulators. Built by senior fintech engineers.

Shipped fintech apps with Plaid, Stripe, MX, Treasury
PCI-DSS, SOC 2, and KYC/AML-aligned engineering

Talk to a Fintech App Engineer

Tell us about the fintech product you're building. A senior engineer will respond within one business day.

Trusted by Industry Leaders

How Good is Your App Idea?

Answer 8 quick questions and we'll send you a personalized report assessing your idea's viability, market fit, and recommended next steps — from the team that's shipped 200+ apps.

Fintech Apps Capabilities

Banking & Neobank Apps

Mobile banking, account opening, card issuance, and ledgering integrated with BaaS partners.

Payments & Money Movement

ACH, RTP, FedNow, wires, card payments, and global rails with idempotency and reconciliation.

Wealth & Brokerage

Investment, brokerage, and robo-advisor apps with portfolio management and statements.

KYC, AML, and Compliance

Onboarding flows integrated with Persona, Alloy, Onfido, and Plaid for identity, KYC, AML, and fraud signals.

PCI-DSS & SOC 2

Tokenization, scope reduction, and SOC 2-aligned engineering for fintech-grade security.

Back Office & Ops

Internal tools for compliance, ops, customer support, and dispute resolution.

Fintech engineering, Done Right

Fintech mistakes are expensive — financially, legally, and in customer trust. We've built fintech apps where settlement timing, idempotency, and audit trails mattered more than visual polish. We treat every cents-level transaction the same way: as something that has to be correct, traceable, and reconcilable.

Maxiom Apps partners with funded fintech startups and established financial services companies on consumer banking, payments, lending, wealth, and crypto applications. Our engineers integrate with Plaid, Stripe, Marqeta, Treasury Prime, Synapse, Persona, Alloy, and the major card networks. We work alongside your compliance and legal teams so the product never gets ahead of the regulatory plan.

Sectors We Serve

Consumer Banking & Neobanks

Mobile banking with account opening, debit issuance, transfers, and budgeting.

Payments & Money Movement

Payment apps, B2B payments, marketplace payouts, and cross-border rails.

Lending & Credit

Underwriting, origination, and servicing platforms for consumer and SMB lending.

Wealth & Brokerage

Robo-advisors, brokerage, retirement, and alternative investments apps.

Crypto & Web3

Custodial and non-custodial wallets, exchanges, and on-ramps with KYC and security best practices.

Insurtech

Quoting, binding, claims, and policy management with secure document handling.

Our Process

How We Build, in Four Phases

Discover

Strip your idea to its core value.

Design

A lean plan that de-risks the build.

Develop

Senior engineers ship in 2-week sprints.

Deploy

Launch, measure, iterate to product-market fit.

FAQ

Frequently Asked Questions

Do you handle PCI-DSS scope reduction?

Which BaaS and payment partners do you work with?

How do you handle KYC, AML, and fraud?

Can you help with SOC 2?

Do you work with crypto and web3?

Ready to Start Your Fintech Apps?

Let's design and ship something users actually love.