Financial Infrastructure Built for Scale
Standard invoicing tools break down when faced with enterprise complexities like multi-tier subscriptions, prorated upgrades, consumption-based metering, and international tax laws. We build bespoke billing engines that automate your entire revenue lifecycle. By tightly integrating with your core product and payment gateways, we eliminate manual invoicing errors and accelerate your cash flow.
Total automation of complex recurring billing and prorated adjustments
Drastic reduction in revenue leakage and involuntary churn
Seamless API integration with Stripe, Adyen, and major accounting ERPs
Enterprise-grade security and strict PCI-DSS compliance architecture
Enterprise Grade
Architected for Scale
The Danger of Manual Billing Workflows
Common Pain Points
- Finance teams wasting days manually calculating usage metrics and generating invoices at the end of the month
- High rates of involuntary churn because the system fails to automatically retry failed credit cards efficiently
- Customer frustration caused by inaccurate billing or confusing invoices
Business Challenges
- Inability to launch innovative pricing models (like metered usage) because the current software doesn't support it
- Severe compliance risks when attempting to handle VAT and global sales tax manually
- Revenue leakage due to unbilled usage or forgotten manual upgrades
Current Market Issues
- Scaling the business requires hiring a massive accounts receivable team, destroying profit margins
- Difficulty securing enterprise clients due to an inability to support custom negotiated pricing tiers
- Security vulnerabilities associated with employees handling sensitive payment data in spreadsheets
Automated, Accurate, and Secure
We architect billing systems as highly reliable microservices. We utilize robust payment gateways (like Stripe or Braintree) for tokenization and processing, while building proprietary logic on our backend to handle exactly how your business meters usage, calculates pricing, and manages subscriptions.
Pricing Model Architecture
We map out every edge case of your pricing model—upgrades, downgrades, proration, and usage tiers.
Backend Engineering & Integration
Building the automated billing engine and securely integrating it with your product database and payment gateway.
Accounting Sync & QA
Wiring the system to automatically push clean journal entries to QuickBooks/NetSuite, followed by rigorous testing.
Capabilities That Drive Growth
Complex Subscription Management
Flawless automated handling of recurring payments, prorated upgrades/downgrades, and free trial conversions.
Usage-Based Metering
High-throughput APIs that ingest millions of usage events (e.g., API calls, gigabytes used) and calculate accurate monthly invoices.
Smart Dunning (Payment Retries)
Algorithmic logic that intelligently retries failed credit cards at optimal times, recovering up to 30% of failed payments.
Global Tax Compliance
Integration with Avalara or Stripe Tax to automatically calculate and apply the correct VAT/Sales Tax based on the customer's jurisdiction.
Customer Self-Service Portals
Secure portals where clients can update credit cards, download past invoices, and upgrade plans without contacting support.
Automated ERP/Accounting Sync
Zero manual data entry. Every paid invoice automatically generates the correct ledger entries in NetSuite, SAP, or Xero.
The Financial Impact of Automated Billing
A custom billing engine stops revenue leakage, accelerates cash flow, and allows your company to experiment with new pricing models instantly.
Business ROI
Automated dunning and elimination of manual errors typically increases realized revenue by 2-5% annually.
Time Saving
Reduces the month-end billing and reconciliation process from days to minutes.
Automation
Generates PDF invoices, emails them, processes the charge, and updates accounting automatically.
Security
PCI-compliant tokenization ensures your servers never store sensitive credit card PANs.
Scalability
Handles millions of billing events per day without requiring additional finance headcount.
Cost Reduction
Eliminates the exorbitant percentage fees charged by third-party billing platforms as your revenue scales.
Our Development Process
Financial Logic Auditing
Documenting every pricing tier, discount rule, tax obligation, and accounting requirement.
Gateway Selection & Architecture
Selecting the optimal payment processors (Stripe, Adyen, GoCardless) and designing the database schema.
Backend Engineering
Writing the core logic for the billing cron jobs, metering APIs, and proration calculations.
Frontend Portal Development
Building intuitive dashboards for your finance team and self-service portals for your customers.
Sandbox Testing
Simulating years of billing cycles in a secure test environment to ensure calculations are mathematically perfect.
Secure Migration & Launch
Migrating existing customer payment tokens securely from the old system and going live.
Technologies We Use
We leverage modern, scalable, and secure technologies to build your digital products.
Frontend
Backend
Database
Cloud
AI/ML
DevOps
Industries We Serve
B2B SaaS
Handling complex seat-based pricing, freemium conversions, and enterprise contract invoicing.
Telecommunications & Cloud
High-volume usage-based metering (billing by the gigabyte, minute, or API call).
Healthcare
HIPAA-compliant billing portals for recurring patient subscriptions and telehealth services.
Media & Publishing
Managing millions of low-cost micro-subscriptions and paywall access logic.
Why Trust Us With Your Revenue?
Mathematical Rigor
Billing code must be perfect. We use strict typing, extreme test coverage, and ACID-compliant databases to ensure every cent is accounted for.
Complex Stripe/Adyen Expertise
We are experts at leveraging low-level payment gateway APIs to build custom architectures that standard platforms can't support.
No Revenue Sharing
Third-party billing software often takes a percentage of your revenue. Build it once with us, own it forever, and keep your margins.
PCI Compliance
We architect systems that utilize secure tokens, ensuring sensitive card data never touches your servers or database.
Accounting Empathy
We understand double-entry accounting. We build systems that make reconciliation a joy for your finance team, not a nightmare.
High-Volume Scalability
Our architectures can ingest and process millions of metered usage events per hour without latency.
The Challenge
The client was transitioning from fixed monthly pricing to usage-based pricing (billing per GB of bandwidth). Their old billing software could not handle the ingestion of 5 million usage events per day, causing massive revenue leakage.
The Solution
We engineered a high-throughput Go backend utilizing Redis for real-time aggregation of usage events. At the end of the month, a Node.js engine calculated the complex tiered pricing and charged the customer securely via the Stripe API.
Business Impact
Captured $850k/month in previously unbilled revenue, completely automated the invoicing process, and enabled the company to scale their infrastructure without billing bottlenecks.
Client Success Stories
Hear from our enterprise partners who have transformed their operations.
"The prorated upgrade logic TechWings built is flawless. It completely eliminated the manual calculations our accounting team was doing every day."
Michael Scott
CFO, DataStream SaaS
"We threw millions of API usage events at the system and it aggregated them perfectly for the monthly invoices. Absolute top-tier engineering."
Pam Beesly
Director of Operations, Global Cloud Services
"The self-service billing portal they designed reduced our customer support tickets by 40%. Customers love being able to manage their own subscriptions easily."
Jim Halpert
VP of Product, SportStreaming Inc