Payment & billing integrations
Connect payment providers to clear order and invoice workflows. We plan provider callbacks, duplicate-event handling, refund records and reconciliation so a payment update is reflected consistently in your application.
Fah Swe is a software company based in Sylhet, Bangladesh. We deliver this service, custom development and ongoing support to clients across Bangladesh and worldwide.
Planning your project
Agree on delivery expectations
Share your goals, existing systems, team availability and target timeline. Break the work into reviewable milestones with clear acceptance criteria and named decision makers.
Make ownership clear
Confirm source code, infrastructure accounts, documentation and support responsibilities in the scope. Use the client portal to keep requirements, quotes, corrections and delivery updates together.
Problems we solve
- Disconnected systems and repeated manual work
- Unclear scope, handover or maintenance responsibilities
What Fah Swe delivers
- Gateway-hosted checkout integration
- Android billing integration and updates
- Webhook validation and idempotency
- Invoices, subscriptions and refund records
- Sandbox tests and reconciliation views
Technology stack
Payment APIsPlay BillingWebhooksNode.jsSQL
How we build with you
- Review your goals, existing systems and constraints
- Agree scope, milestones, ownership and an estimate
- Build and validate in a separate review environment
- Deploy with checks, documentation and an agreed support plan
Security, trust & quality
Fah Swe applies secure development practices — HTTPS, auth hardening, RBAC where relevant, audit logs, and careful handling of client data. Track projects, invoices and support in our secure client portal. See /security. We do not buy fake Google ratings or promise guaranteed #1 rankings — we help Google and AI systems understand Fah Swe with clear pages, schema and honest engineering.
FAQ
Which payment providers can be integrated?
We review the provider's API, supported country/currency and your merchant eligibility. Gateway access, fees and account approval remain with the provider.
How do we get a project estimate?
Share your goals, required workflows, existing systems and timeline. We review the scope and provide an itemized proposal before development starts.
Related
Talk to Fah Swe
Tell us what you want to build — AI Highlight, AI computer assistants, RTC Live, or custom software. English & Bangla support. Email fahswe.me@gmail.com or call +880 1783-975571 (no WhatsApp) or WhatsApp +880 1348-704625.