Payment System Integration Services
Secure, compliant payment processing for Swedish businesses. Integrate Stripe, Swish, Klarna, and custom payment solutions with enterprise-grade security.
Payment Solutions We Integrate
Stripe
Global payment processing with Swedish support
- • Credit/debit card processing
- • Stripe Checkout & Elements
- • Subscription billing
- • Invoice generation
- • Webhooks & events
- • Radar fraud prevention
- • Multi-currency support
- • Swedish Autogiro (Direct Debit)
Swish
Mobile payments for Swedish consumers
- • Swish e-commerce integration
- • QR code payments
- • Instant transfers
- • Refund handling
- • Payment status tracking
- • M-commerce optimization
- • SSL certificate setup
- • Callback URL configuration
Klarna
Flexible payment options for customers
- • Pay later (30 days)
- • Pay in 3 installments
- • Financing options
- • Klarna Checkout
- • On-site messaging
- • Order management API
- • Settlement reports
- • Fraud protection
PayPal
Global payment platform
- • PayPal Checkout
- • Express Checkout
- • Subscription payments
- • PayPal Credit
- • Venmo integration (US)
- • Dispute management
- • IPN & webhooks
- • Multi-currency
Adyen
Enterprise payment platform
- • Unified payment API
- • 250+ payment methods
- • Smart routing
- • RevenueAccelerate
- • Risk management
- • Data insights
- • POS integration
- • Global acquiring
Nets (Nexi)
Nordic payment solutions
- • Easy payment gateway
- • BankAxept (Norway)
- • Dankort (Denmark)
- • Invoice & installments
- • Recurring payments
- • 3D Secure
- • Tokenization
- • Settlement reporting
Why Professional Payment Integration Matters
Security & Compliance
Payment security isn't optional. One breach can destroy customer trust and result in massive fines. We ensure PCI DSS compliance and implement defense-in-depth strategies.
- PCI DSS Level 1 compliance guidance
- GDPR-compliant payment data handling
- Tokenization & encryption
- Regular security audits
Maximize Conversion Rates
A poorly integrated payment flow can lose you 20-40% of potential sales. We optimize every step from checkout to confirmation to maximize conversions.
- One-click checkout optimization
- Mobile payment optimization
- Smart retry logic for failed payments
- Localized payment methods
Our Payment Integration Services
E-Commerce Integration
- • Shopping cart integration
- • Checkout flow optimization
- • Product & pricing sync
- • Tax calculation (Swedish VAT)
- • Shipping integration
- • Order management
- • Digital receipts & invoicing
Subscription Billing
- • Recurring payment setup
- • Plan & pricing management
- • Proration handling
- • Upgrade/downgrade flows
- • Dunning management
- • Usage-based billing
- • Customer portal
Security & Fraud Prevention
- • 3D Secure implementation
- • Fraud detection rules
- • Address verification (AVS)
- • CVV verification
- • Velocity checks
- • IP geolocation blocking
- • Manual review workflows
Mobile Payments
- • Apple Pay integration
- • Google Pay integration
- • Swish mobile optimization
- • Mobile SDK implementation
- • QR code payments
- • In-app purchase integration
- • Mobile wallet support
Multi-Currency & Markets
- • Currency conversion
- • Local payment methods
- • Dynamic currency conversion
- • Exchange rate management
- • Market-specific compliance
- • Localized checkout
- • Settlement in multiple currencies
Reporting & Analytics
- • Real-time transaction monitoring
- • Revenue analytics dashboard
- • Churn analysis (subscriptions)
- • Payment method performance
- • Settlement reconciliation
- • Custom reports
- • Export to accounting systems
Technology Stack
Payment SDKs
- • Stripe SDK (Node.js/React)
- • Swish Merchant API
- • Klarna SDK
- • PayPal SDK
Frontend
- • Next.js/React
- • Stripe Elements
- • React Hook Form
- • Zod validation
Backend
- • Node.js/TypeScript
- • Webhook handling
- • Queue systems (Bull/BullMQ)
- • Event-driven architecture
Security
- • TLS 1.3
- • Azure Key Vault
- • Token vaulting
- • WAF (Cloudflare/Azure)
Client Success Stories
Nordic Fashion Retailer
Multi-payment integration for €12M annual revenue
Integrated Stripe, Klarna, and Swish with smart routing based on customer location and payment method availability. Reduced payment failures by 62% and increased conversion by 28%.
SaaS Platform (B2B)
Subscription billing for 3,500+ business customers
Built comprehensive subscription billing system with Stripe, including usage-based pricing, proration, and dunning management. Reduced churn from failed payments by 45%.
Integration Packages
Starter
Single payment method integration
- 1 payment method (Stripe/Swish/Klarna)
- Basic checkout integration
- Webhook handling
- Order confirmation emails
- Refund functionality
- Basic reporting dashboard
- 4 weeks delivery
- 30 days support
Professional
Multi-payment gateway integration
- Everything in Starter, plus:
- Up to 3 payment methods
- Smart payment routing
- 3D Secure 2.0 implementation
- Apple Pay & Google Pay
- Subscription billing (if needed)
- Fraud detection rules
- Advanced analytics dashboard
- 8 weeks delivery
- 90 days support
Enterprise
Custom payment platform
- Everything in Professional, plus:
- Unlimited payment methods
- Multi-currency support
- Custom fraud prevention rules
- PCI DSS compliance audit support
- Marketplace/multi-vendor support
- Accounting system integration
- Dedicated payment architect
- Custom timeline
- 12 months support included
* Payment gateway fees (Stripe, Klarna, etc.) are billed separately by the providers.
Ready to Accept Payments?
Let's discuss your payment needs and design the perfect integration strategy. We'll help you choose the right payment methods for your Swedish customers.
Contact us: payments@technspire.com | Phone: +46 722 52 52 53