Backend engineering
Backends built to carry real products and real operations.
We engineer the data, APIs, authentication and infrastructure behind dependable web products and business-critical platforms.
Overview
A strong backend keeps business rules consistent, data trustworthy and product development predictable. We design this foundation before features accumulate around accidental decisions that are expensive to reverse.
Our work covers new systems, integrations and careful improvement of existing platforms. Architecture, security, observability and maintainability are treated as product requirements — not tasks postponed until after launch.
What we build
APIs, data and infrastructure, engineered together.
APIs & service architecture
Versioned REST or GraphQL interfaces, clear domain boundaries and well-tested business logic.
Data architecture
PostgreSQL, Redis, migrations and data models designed for integrity and future reporting.
Authentication
Secure identity, sessions, permissions and account workflows for staff and customers.
Cloud infrastructure
Containerized deployment, monitoring, backups and production environments sized to the product.
A strong fit
When this service makes sense.
- New products that need a production-ready technical foundation
- Teams exposing data or workflows to partners through an API
- Businesses connecting several internal and third-party systems
- Existing platforms that have become fragile or difficult to extend
In practice
XONAR
XONAR’s custom storefront talks to Shopify through our API integration layer and server-side routes, with Stripe and iyzico payment integrations and prices converted from official Turkish exchange rates.
- 6 languages
- Shopify API
- 100+ orders
Outcomes
What the work is designed to improve.
- 01
A clear architecture that supports continued development
- 02
Reliable APIs and consistent business rules
- 03
Better visibility into failures and production behavior
- 04
Documentation that reduces dependence on individual developers
Which backend technologies do you use?
Our common stack includes TypeScript, Node.js, NestJS, PostgreSQL, Redis, Docker and cloud infrastructure. The final choice follows the product, team and operational requirements.
Can you work with an existing codebase?
Yes. We begin with a focused technical review to understand architecture, delivery risk and the safest path to stabilize, extend or progressively replace parts of the system.
Do you build third-party integrations?
Yes. We work with APIs, webhooks, payment providers, identity services and operational platforms, including monitoring and failure handling around the connection.
How is the system handed over?
Code, infrastructure decisions and operating procedures are documented throughout the engagement. Ownership and access are agreed explicitly in the project contract.
Start a conversation
Have a backend that needs to carry more?
Tell us what the business needs the software to do.
We usually reply within one business day · contact@velantra.dev