Fintech Engineering · PCI-DSS Ready

Fintech Software
Development
Company

We design, build, and secure fintech platforms - from digital banking and payment systems to KYC/AML automation and robo-advisory tools - engineered for regulatory compliance, scale, and real-time performance.

Fintech Software Challenges We Solve

Regulatory pressure, legacy infrastructure, and rising customer expectations are straining fintech and banking teams

Heavy Regulatory Complexity

PCI-DSS, SOX, and AML/KYC obligations touch nearly every feature, turning routine changes into compliance projects.

Legacy Core Banking Systems

Aging core banking and financial platforms are expensive and risky to change, slowing innovation to a crawl.

Fraud & Security Risk at Scale

Every new payment rail or integration expands the attack surface for fraud, account takeover, and data theft.

Slow, Friction-Heavy Onboarding

Manual KYC checks and clunky verification flows drive applicant drop-off before an account is ever opened.

Scalability Under Transaction Spikes

Trading windows, payroll cycles, and market volatility create transaction spikes that legacy systems cannot absorb.

UX Gaps Driving Customer Churn

Outdated digital experiences push customers toward fintech-native competitors with faster, simpler apps.

Our Fintech Software Solutions

End-to-end fintech software engineering - built compliant, secure, and scalable from day one

Custom Banking & Payment Platforms

Purpose-built banking cores and payment processing platforms tailored to your product, not generic templates.

Digital Wallets & Neobank Experiences

Mobile-first digital wallets and neobank apps with modern onboarding, budgeting, and money-movement tools.

KYC / AML Automation

Automated identity verification, sanctions screening, and transaction monitoring that cuts onboarding time.

Open Banking API Integration

Secure, standards-based open banking connectivity across account aggregation, payments, and data sharing.

Real-Time Payment Rails

ACH, RTP, and wire integrations that give customers instant, reliable money movement.

Robo-Advisory & Investment Platforms

Automated portfolio management and investment platforms built for accuracy, compliance, and scale.

Have a fintech software project in mind?

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Technology We Use for Fintech Software

Modern, standards-based technology chosen for security, throughput, and long-term maintainability

Backend & APIs

Java Node.js Go .NET

Payments & Open Banking

Stripe Plaid Open Banking APIs ISO 20022

Data & Messaging

PostgreSQL Kafka Redis

Cloud & Infrastructure

AWS (PCI-compliant) Azure Docker Kubernetes

Security & Identity

OAuth2 / OpenID Connect Tokenization HSM-backed key management

Emerging Tech

Blockchain / DLT Machine learning for risk scoring

Security & Compliance Built In

Fintech software carries one of the highest security bars of any industry. We design encryption, tokenization, and access control into the architecture from day one - then validate it with independent penetration testing of every banking and payment application.

PCI-DSS & Regulatory Compliance

Controls mapped to PCI-DSS, SOX, GLBA, and AML/KYC requirements across the full payment lifecycle.

Encryption & Tokenization

Financial data encrypted at rest and in transit, with tokenization to minimize exposure of sensitive account data.

Secure API Design

OAuth2 / OpenID Connect and rigorous access controls protecting every banking and payment API.

Penetration Testing & Fraud Monitoring

Independent security testing of banking and payment applications, backed by continuous fraud and anomaly monitoring.

Frameworks & Standards We Work Within

PCI-DSS
SOC 2
GLBA
AML / KYC
GDPR
ISO 27001
Explore Our Security Testing Services

Why Accessibility Matters in Fintech

  • Customers with disabilities need independent access to their accounts, statements, and payment tools - not assistance from someone else.
  • Banking and fintech is one of the most litigated sectors for ADA web-accessibility claims, with lawsuits targeting banks and fintechs every year.
  • Regulators in many jurisdictions expect financial services to be accessible to all customers, regardless of ability.
  • Accessible design also improves usability for older customers and anyone using a low-bandwidth or assistive device.

Accessible, Inclusive Banking Experiences

As a WCAG and ADA compliance specialist, D2i Technology builds banking and payment applications to WCAG 2.1/2.2 AA from the ground up - covering accessible account statements and disclosures, screen-reader-friendly transaction tables, and keyboard-operable payment and transfer flows - then verifies them with manual assistive-technology testing, not just automated scans.

WCAG 2.1 / 2.2 AA conformance
Keyboard-operable payment flows
Screen-reader-friendly transaction tables
Accessible statements & disclosures
See Our Accessibility Services

AI Use Cases in Fintech

Practical AI applications we build to reduce fraud losses, cut risk, and improve the customer experience

Real-Time Fraud Detection

Anomaly-detection models that flag suspicious transactions and account activity as they happen.

Credit Risk Scoring

ML-driven risk models that assess creditworthiness faster and more accurately than manual review.

AI Chatbots & Virtual Assistants

Conversational support that resolves common banking and payment questions without a wait.

Personalized Financial Insights

Spend-analytics and personalization engines that surface relevant, timely money insights.

AML Transaction Monitoring

Automated pattern detection across transactions to flag money-laundering risk for review.

Automated KYC & Document Verification

ID and liveness-check automation that speeds up onboarding while reducing fraud risk.

Quality Assurance for Fintech Software

Financial software failures carry real monetary and regulatory risk - our QA process is built around that reality

Security & Penetration Testing

Independent penetration testing and PCI vulnerability scans of every release.

Transaction Reconciliation Testing

Ledger-accuracy testing that validates every transaction reconciles correctly.

Load & Performance Testing

Simulated peak trading and payment volumes to validate performance under stress.

Regulatory Compliance Test Suites

AML/KYC workflow validation mapped directly to compliance requirements.

Automated Regression

CI-integrated regression suites protecting critical payment and transfer flows.

Accessibility Testing

Manual and automated WCAG testing of every account and payment interface.

API Contract & Integration Testing

Contract testing with banking partners and open banking providers.

Cross-Device Testing

Validated across desktop, tablet, and mobile banking workflows.

Ready to modernize your fintech software?

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Fintech Case Studies

Real engagements, real outcomes - every figure below comes from a documented client result

We're continually adding new fintech engagements to our case study library. Explore our full portfolio of client results across every industry we serve.

View All Case Studies

Frequently Asked Questions

Let's Build Your Fintech Software

From PCI-DSS-ready banking and payment platforms to AI-powered fraud detection and accessible customer experiences - D2i Technology has the fintech, security, and accessibility expertise to deliver software your customers and regulators can trust.