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Qollabra

Service

Backend & Data Systems

Service layers, APIs, relational data models, search/vector capabilities, background jobs and integrations.

The backend is where a product's reliability is decided. We design service layers, APIs, relational data models, search and vector capabilities, background jobs and integrations around the needs of the product — not around a fashionable architecture.

What we build

APIs & service layers

Typed, validated APIs with clear boundaries between validation errors and application failures.

Data & search

PostgreSQL data models with migrations, full-text and vector search, and hybrid retrieval where it helps.

Integrations

Reliable connections to third-party systems with retries, idempotency and observability.

What you can expect

Frequently asked questions

Do you work with vector databases?

Yes — including vector search inside PostgreSQL. We choose between keyword, vector and hybrid retrieval based on evaluation, not assumption.

Related services

Start with a focused discovery workshop

We map the business outcome, the current process, the data and the constraints — then agree the smallest production-ready version worth building.