Finance Solutions

Billing & Invoicing Software

DevSimplex builds custom billing and invoicing platforms that automate revenue operations for subscriptions, usage-based, and one-time billing models.

View Case Studies
55+
Success Rate
$1B+
Avg Delivery
1+
Projects Delivered
99.99%
Client Retention

Our Development Process

A systematic approach to quality delivery and successful outcomes

01

01

1-2 weeks

Analyze billing requirements and pricing models.

Deliverables:

  • Pricing analysis
  • Requirements
  • Solution design
02

02

2 weeks

Design billing architecture and workflows.

Deliverables:

  • System design
  • Pricing engine
  • UI/UX
03

03

6-14 weeks

Build billing platform and integrations.

Deliverables:

  • Billing engine
  • Invoice system
  • Integrations
04

04

2 weeks

Deploy and migrate billing data.

Deliverables:

  • Deployed system
  • Data migration
  • Training

Success Stories

Real-world success stories and business impact

Usage-Based Billing Platform

Technology

Challenge:

Complex usage billing for millions of API calls

Solution:

Custom usage metering and billing platform

Results:

  • Real-time usage tracking
  • Automated tiered billing
  • 95% reduction in billing errors
Technologies Used:
ReactNode.jsPostgreSQLTimescaleDB

Client Stories

What our clients say about working with us

The usage-based billing platform handles millions of transactions flawlessly. Revenue leakage is now zero.
Kevin Park
CTO
APICorp

Frequently Asked Questions

Get expert answers to common questions about our enterprise software development services, process, and pricing.

Yes, we build for tiered, volume, usage-based, hybrid, and custom pricing models.

We implement ASC 606 compliant revenue recognition with deferred revenue tracking.

Still Have Questions?

Get in touch with our team for personalized help.

Ready to Get Started?

Let's discuss how we can help transform your business with finance solutions.