Billing Systems
Custom billing platforms for subscriptions, recurring payments, invoices, balances, fees and transaction management.
Software · Billing · Payments · Automation
Engineering the Systems
Behind Your Business
Passion for Code. Powering Your Business.
We design and build reliable billing platforms, payment systems and automated business processes tailored to your needs — not off-the-shelf templates.
- Focus
- Billing & Payments
- Approach
- Custom-built Systems
- Method
- Automation-first
We don't just build websites.
We build the systems that run businesses.
What We Build
Our Services
From billing infrastructure to automated workflows — we build the technical foundation that businesses run on.
Payment Processing
Development of payment processing infrastructure, transaction flows, routing, failover and reconciliation systems.
Business Automation
Automate repetitive business processes and connect different systems into one efficient, reliable workflow.
API & Integrations
REST APIs, third-party integrations, payment gateways, CRMs, accounting systems and external services.
Custom Web Applications
Complex web applications, admin panels, dashboards and internal business platforms built around your logic.
SaaS Development
Design and development of scalable SaaS platforms with multi-user and multi-tenant architecture.
Core Expertise
Complex Systems.
Simplified.
We build the infrastructure that keeps your business moving — from transaction processing and billing to automated workflows and integrations.
- Transaction processing
- Smart routing
- Failover processing
- Recurring billing
- Automated settlements
- Transaction monitoring
- Reporting
- Notifications
- API integrations
- Workflow automation
Why Us
Why Choose WebPassion
A technical partner that builds around your business, not the other way around.
Built Around Your Business
We don't force your business into an off-the-shelf product. We build systems around your actual processes.
Automation First
We identify repetitive processes and turn them into reliable, automated workflows.
Scalable Architecture
Solutions are designed to grow with your business, from first users to full scale.
Integration Expertise
We connect payment providers, APIs, databases, CRMs and external services into one system.
Security & Reliability
Focus on secure architecture, data integrity, monitoring and fault tolerance at every layer.
Long-Term Partnership
We can support, improve and scale the system long after the initial launch.
Our Technology Stack
Reliable Tools for Serious Systems
We keep our stack focused — proven technologies applied with deep expertise, not a long list of buzzwords.
Backend
PHP
Laravel
Yii2
Node.js
Frontend
JavaScript
React
Vue.js
Database
MySQL
PostgreSQL
Redis
Infrastructure
Linux
Docker
Cloudflare
AWS
APIs
REST API
Webhooks
OAuth
JSON
Payments
Payment Gateways
Transaction Processing
Billing
Recurring Payments
How We Work
A Clear, Predictable Process
Five stages that take a complex requirement from idea to a running, scalable system.
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01
Discovery
Understand your business, requirements and existing infrastructure.
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02
Architecture
Design the system architecture, data flows and integrations.
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03
Development
Build the platform using modern and reliable technologies.
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04
Testing & Launch
Test, optimise and deploy the system with confidence.
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05
Support & Scale
Monitor, improve and scale the platform as your business grows.
About Us
A Team Focused on Hard Technical Problems
We are a software development team focused on building reliable technology for businesses that need more than a standard website or off-the-shelf solution.
From payment processing and billing infrastructure to business automation and custom integrations, we turn complex requirements into practical, working software.
We stay close to the details — data models, edge cases, failure modes — because that's where billing and payment systems succeed or fail.
What We Can Build
Types of Systems We Deliver
Representative categories of platforms we design and build. Every project is custom — these illustrate the kind of complexity we're comfortable with.
Payment Processing Platform
End-to-end infrastructure for routing, authorizing and reconciling transactions across providers.
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Billing & Subscription Platform
Recurring billing, invoicing, plans, balances and automated dunning for subscription businesses.
Merchant Management System
Onboarding, KYC status, fee configuration and multi-merchant account administration.
Transaction Management Dashboard
Real-time visibility into transactions, statuses, disputes and settlement activity.
Automated Business Workflow
Rules-based automation that connects internal tools and removes manual, repetitive work.
API Integration Platform
A unified layer that connects payment gateways, CRMs, accounting tools and external services.
SaaS Management Platform
Multi-tenant architecture with role-based access, billing and account administration built in.
Get In Touch
Have a Complex Project?
Tell us what you're trying to build. We'll help you find the right technical solution.
Start a Conversation
Share a few details about your project and we'll get back to you with next steps — no obligation, no sales scripts.
- Free initial technical assessment
- Direct communication with engineers
- Clear scope before any commitment
Email[email protected]
Location
Remote-first · Worldwide · UK, Manchester