API design
Create predictable interfaces for web, mobile, partners and automation.
05 / The product foundation
Make the invisible parts dependable.
The backend is where the business rules live, data stays consistent and systems talk to one another. N9 builds the APIs, databases, integrations and deployment foundations that let a useful product operate reliably beyond the first demo.
Inside the product
The pieces that make it useful.
Features are selected around the users and the outcome, not added just to fill a feature list. These are some of the building blocks a backend & cloud project might include.
Data modeling
Design records and relationships that match the business, including change history where needed.
Authentication and permissions
Give each person and service appropriate access to the right data and actions.
Integration layer
Connect existing platforms, payment services, email, commerce and external APIs.
Background jobs
Handle imports, notifications, scheduled work and long-running tasks away from user requests.
Observability
Track errors, health, performance and business events so issues can be found and understood.
Security foundations
Protect secrets, validate input, limit abuse and establish a sensible backup and recovery plan.
Cloud delivery
Package, deploy and operate the product with environments and release practices suited to the team.
What we could build
Products with a real job to do.
Every example can be scoped to your business, your data and the first release that creates value. These are possibilities, not claims about completed client projects.
Product API
A dependable backend serving web, mobile and partner experiences.
Integration hub
A single place to normalize data and workflows across third-party systems.
Operations data platform
Consistent records, event history and reporting-ready data.
Authentication service
Accounts, roles, invitations, sessions and controlled access.
Automation infrastructure
Queues, schedules, retries and human-review work items.
Cloud migration
A staged move with validation, rollback planning and operational checks.
Example blueprint
One connected foundation for every interface.
A business may have a customer app, internal dashboard and AI assistant. They should not each invent a different version of the truth.
- 01Define the core business records, ownership and access rules.
- 02Expose stable APIs for the web app, mobile app and approved automations.
- 03Connect external systems with retries, monitoring and clear failure states.
- 04Add logging, backup, tests and release controls before the workload becomes critical.
How we build
Languages & technology.
We choose the stack around the product, the existing systems, performance needs and who will own it long term. These are examples of technologies we can use—not a promise that every project needs every tool.
Languages
TypeScript/JavaScript, Python, Go or PHP when they fit the system and team.
Data
SQL with PostgreSQL or MySQL; caching, search or streaming only where justified.
Infrastructure
Docker, infrastructure configuration and cloud services on AWS or Google Cloud as appropriate.
Operations
Automated tests, CI/CD, logs, metrics, backups and documented runbooks.
The final architecture and technology choices are agreed during discovery.
Have a version of this in mind?
Tell us what people need to do, what is slowing them down and what a useful first release would change.
Start a project