FinTech Software Development Company
Financial Systems Engineered for Compliance, Performance, and Institutional Trust
Halkwinds builds FinTech software for regulated financial environments — payment infrastructure, digital banking platforms, lending systems, and compliance technology designed to the throughput, latency, security, and regulatory standards global financial operations require.
Enterprise Challenges
Challenges We Solve
PCI DSS Compliance Throughout Development
Payment software handling cardholder data requires PCI DSS Level 1 architecture throughout development — not as a final audit step. Non-compliant architectures discovered post-development require expensive remediation.
Real-Time Payment Processing at Scale
Payment systems must handle transaction volume spikes without performance degradation. Systems not designed and load-tested for peak volumes fail at the moments that matter commercially.
Regulatory Reporting Across Jurisdictions
FinTech operations spanning multiple jurisdictions face AML, CTF, reporting, and capital requirements that differ by market — requiring both regulatory expertise and engineering capability.
Core Banking and Legacy System Integration
Modern FinTech products must interface with legacy core banking infrastructure operating on ISO 8583, SWIFT, and proprietary protocols — complexity systematically underestimated in live programmes.
Fraud Decisioning Speed vs Accuracy
Payment fraud decisioning must occur within milliseconds without false-positive rates that damage customer experience. Systems optimising purely for speed sacrifice accuracy.
Open Banking and Third-Party API Security
Open Banking implementations require exposing financial data APIs to regulated third parties while maintaining data security, customer consent governance, and regulatory compliance.
What We Deliver
Core Capabilities
Payment Processing Platform Development
End-to-end payment platform engineering covering authorisation, clearing, settlement, reconciliation, and reporting — with PCI DSS Level 1 architecture and multi-currency, multi-rail processing.
Core Banking System Integration
Integration with legacy core banking platforms via ISO 8583, SWIFT, FIX, and proprietary APIs — enabling modern FinTech products against established infrastructure without core replacement.
Digital Lending Platform Development
Origination workflow, credit decisioning integration, loan management, payment scheduling, collections, and regulatory reporting with configurable product templates.
Open Banking and PSD2 API Development
FAPI-compliant Open Banking API development, OAuth 2.0 and eIDAS strong customer authentication, consent management, and third-party provider registration infrastructure.
AML and Financial Crime Compliance
Transaction monitoring, sanctions screening, customer risk scoring, SAR generation, and regulatory reporting systems with tunable alert thresholds and case management workflows.
WealthTech Platform Development
Portfolio management, trading execution, rebalancing automation, client reporting, and regulatory compliance systems for wealth management and investment platforms.
FinTech Mobile Application Development
Consumer and business financial applications with biometric authentication, device binding, real-time notifications, and the performance standards digital banking users expect.
Financial Data Platform and Analytics
Real-time financial data pipelines, regulatory reporting data marts, analytics platforms, and customer financial intelligence systems.
Enterprise Use Cases
In Production
Digital Lending Platform for Community Bank
Challenge
Community bank with manual lending averaging 14-day decisions, limiting competitiveness against FinTech lenders offering same-day decisions.
Solution
Digital lending platform with automated income verification, credit bureau integration, configurable decisioning rules, e-signature, and core banking booking.
Outcome
Decision cycle reduced to same-day for 68% of applications. Origination cost per loan reduced 62%. Application volume increased 3.1x.
Payment Orchestration for E-commerce
Challenge
Enterprise retailer with 8.4% checkout decline rate and $35.3M in potential annual revenue lost to payment failures.
Solution
Payment orchestration platform routing transactions across four acquiring banks with automatic retry logic and local payment method support.
Outcome
Checkout decline rate reduced from 8.4% to 3.1%. $21.8M annual revenue recovered from previously failed transactions.
AML Transaction Monitoring Modernisation
Challenge
Mid-market bank with legacy AML system generating 94% false-positive alert rate requiring 40 analyst-hours per 1,000 alerts.
Solution
ML-powered transaction monitoring with behavioural profiling, peer group analysis, network graph analytics, and tiered alert confidence scoring.
Outcome
False-positive rate reduced to 18%. Analyst productivity improved 3.8x. Zero regulatory findings related to AML programme.
Open Banking API Platform
Challenge
Challenger bank needing FCA-compliant Open Banking API implementation to meet regulatory deadline and enable third-party integrations.
Solution
FAPI-compliant Open Banking API platform covering account access and payment initiation — with eIDAS integration, consent management, and TPP registration portal.
Outcome
FCA deadline met with 6 weeks to spare. 140 TPP integrations established within 12 months.
Real-Time Cross-Border Payments
Challenge
Remittance provider with 1–3 business day settlement at 4.8% average fee losing market share to competitors achieving 4-hour settlement at sub-1% cost.
Solution
Real-time payment rail integration in 14 markets, FX optimisation engine, compliance automation, and real-time recipient delivery notification.
Outcome
Average settlement time reduced to 47 minutes. Average fee reduced to 0.9%. Transaction volume grew 2.8x.
SMB Treasury Management SaaS
Challenge
FinTech startup building cash management SaaS requiring multi-bank account aggregation, cash flow forecasting, AP/AR automation, and payment initiation.
Solution
Multi-bank aggregation via Open Banking APIs, ML cash flow forecasting, invoice processing, payment scheduling, and accounting system synchronisation.
Outcome
Platform reached $8.4M ARR in 18 months. Average customer cash flow forecast accuracy of 91% over 30-day horizon.
Industry Applications
Across Sectors
Banking and Credit Unions
Digital banking platforms, lending origination, payment infrastructure, and compliance systems — integrated with core banking infrastructure and built to regulatory standards.
Payments and Remittance
Payment orchestration, cross-border transfer infrastructure, acquiring platform development, and payment analytics with PCI DSS Level 1 architecture.
Lending and Credit
Consumer and SMB lending platforms, decisioning engine integration, loan management systems, and collections automation with state licensing compliance.
Wealth Management
Portfolio management systems, trading execution platforms, rebalancing automation, and client reporting with fiduciary-grade calculation accuracy.
Insurance Technology
Premium calculation engines, policy administration platforms, claims management, and regulatory filing systems for P&C, life, and specialty insurers.
Crypto and Digital Assets
Exchange platforms, custody infrastructure, DeFi protocol integration, and compliance systems with the throughput and security digital asset businesses require.
How We Deliver
Delivery Process
Regulatory and Technical Discovery
Assessment of your regulatory obligations, payment network requirements, integration constraints, and performance targets — producing a compliance and architecture brief.
Financial Architecture Design
System architecture designed for financial correctness — transaction atomicity, audit trail completeness, settlement accuracy, reconciliation architecture, and PCI DSS controls.
Core Infrastructure and Compliance Build
Development of foundational financial infrastructure — transaction processing core, audit logging, encryption layer, access controls, and compliance monitoring hooks.
Financial Product Development
Iterative development with weekly stakeholder reviews, continuous integration against realistic financial data volumes, and formal verification of financial calculation accuracy.
Performance, Security, and Compliance Testing
Load testing at 3x projected peak volume, penetration testing, PCI DSS compliance assessment, and regulatory documentation review before production authorisation.
Certified Production Deployment
Phased production rollout with payment network certification support, regulatory coordination, real-time monitoring, and post-launch performance review.
FAQ
Common Questions
Standard FinTech compliance covers PCI DSS, SOC 2, AML/CTF controls, GDPR, and jurisdiction-specific requirements. We identify your specific regulatory obligations during discovery and design controls into the architecture.
Related Services
Explore Related Services
Payment Gateway Integration
Multi-gateway orchestration and local payment methods.
Digital Banking Development
Neobank and challenger bank platform engineering.
Blockchain Development
DeFi and blockchain settlement rails for financial systems.
Smart Contract Development
Audited financial smart contracts for settlement automation and programmable compliance.
AI Development
Fraud detection, credit scoring, and AML systems.
AI Automation Services
KYC onboarding, trade processing, and compliance automation.
Custom Software Development
Enterprise financial platforms and integration middleware.
Technologies
Related Technologies
7 technologies · 7 categories
Work With Halkwinds
Build Financial Software That Performs at Scale and Passes Regulatory Scrutiny
Halkwinds engineers FinTech systems with financial-grade architecture, compliance controls, and the transaction performance regulated financial operations demand.
Architecture. Engineering. Scale. — Built by Halkwinds Product Engineering.