Industry SolutionsBanking Software Development
Banking software for institutions modernizing legacy systems: digital onboarding, account and payments features, and mobile banking apps, designed with PCI DSS and SOX controls in mind from the start.
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- $450
What We Deliver
Banking Solutions We Deliver
01
Core Banking Platforms
Modular core banking systems supporting deposits, lending, and treasury operations with real-time transaction processing.
02
Mobile Banking Applications
Cross-platform mobile banking apps with biometric authentication, real-time notifications, and P2P transfers.
03
Fraud Detection Systems
ML-powered transaction monitoring that analyzes behavioral patterns, geolocation, and device fingerprints in real time.
04
Payment Processing Engines
High-throughput payment gateways supporting ACH, wire transfers, real-time payments (RTP), and SWIFT messaging.
05
KYC/AML Automation
Automated identity verification, sanctions screening, and suspicious activity reporting workflows.
06
Open Banking APIs
PSD2-compliant API layers enabling third-party integrations, account aggregation, and embedded banking services.
How it works
Our Development Process
Short sprints with a working demo at the end of each one mean you see progress early and can change priorities before they become expensive.
Discovery
We analyze your vision, goals, and competitive landscape to craft a solution roadmap. This phase typically runs 1-2 weeks and defines the full project scope.
Design
Intuitive UI/UX crafted with interactive prototypes. Prototypes let you test the flow with real users before any code is written.
Development
Expert engineering using Flutter, Vue.js, Node.js, and GCP in 2-week Agile sprints with weekly milestone demos for full transparency.
Launch & Support
Reliable deployment with crash and uptime monitoring and ongoing maintenance. Maintenance plans run during business hours, Monday to Friday.
Our Technology Stack
- Flutter
- TypeScript
- Node.js
- GCP
- Firebase
- Vue
- JavaScript
- Python
Questions
Frequently Asked Questions
How do you ensure PCI DSS compliance in custom banking software?
PCI DSS controls span all 12 requirement categories, including network segmentation, encryption of cardholder data at rest and in transit, access control, and continuous monitoring. Sensitive data is tokenized using hardware security modules, and we conduct quarterly vulnerability scans and annual penetration testing as required by PCI DSS v4.0.
Can custom banking platforms integrate with legacy core banking systems?
Yes, we build integration layers using API gateways, message queues, and adapter patterns that bridge modern applications with legacy mainframe and AS/400 systems. Our approach enables a gradual strangler-fig migration strategy rather than a risky big-bang replacement. We support ISO 20022 messaging, SWIFT connectivity, and real-time event streaming to ensure reliable data flow.
What fraud detection capabilities can be integrated into banking applications?
Fraud detection systems use ensemble ML models trained on transaction velocity, geolocation anomalies, device fingerprinting, and behavioral biometrics. The system generates risk scores in under 100ms per transaction, enabling real-time decisioning without degrading user experience.
How does open banking API development work for regulated institutions?
Open banking APIs are built compliant with PSD2, Open Banking UK, and FDX standards, supporting account information services (AIS) and payment initiation services (PIS). APIs are secured with OAuth 2.0, FAPI-compliant authentication, and certificate-bound access tokens. Our implementation includes developer portals, sandbox environments, and rate-limiting infrastructure for third-party onboarding.
Your Development Partner
Simon Dziak
I build every banking software development project myself, with Flutter and Firebase, and I personally ensure every project meets the highest standards.