Service
Backend, API & Database Development
For products that need stable backend systems, clean integrations, and architecture that can grow without constant rewrites.
Secure REST APIs, databases, authentication, payment and third-party integrations, and scalable architecture that holds up as your traffic and data grow.
What this can include
Typical scope
API and database architecture
Authentication and role management
Payments and third-party integrations
Monitoring, deployment, and maintenance support
What usually goes wrong
Common risks
- Adding services and queues before the current API is understood.
- Integrations that pass staging and fail on the first real payment or webhook.
- Schema changes with no migration path or rollback.
Fit check
What we will not do
- Rewriting a working backend only because a new framework is fashionable.
- Work we cannot observe or deploy because nobody can grant access.
- An unscoped “make it scale” request with no traffic, SLAs, or failure history.
Questions buyers ask
Service-specific FAQ
Can you work on an existing backend?
Yes. We can review, stabilize, extend, or refactor an existing backend when a full rebuild is unnecessary.
Do you handle integrations too?
Yes. This includes payments, third-party APIs, auth providers, and internal system-to-system connections.
Next step
Let's find your quick wins
Send us your system and we will review the obvious risks, quick wins, and next steps. We work from GMT+7 and support overseas clients through planned overlap, async updates, and priority handling for maintenance work.
Contact information
Email
quy.lienougroup@gmail.comWhatsApp
+84 702 494 959Location
Vietnam · Remote worldwide
Hours
Mon–Fri, 9:00–18:00 (GMT+7)
SLA
Typical first response within 2–4 hours for maintenance clients