Back-end and API development

The dependable layer behind every product surface.

Back-end architecture, APIs, data workflows, authentication and infrastructure for mobile, web and internal software.

A clear interface cannot compensate for an unreliable system. We design the services, data and operational tools that keep products coherent as they grow.

Discuss your project

Who it is for

Teams launching a connected product, replacing fragile services or integrating mobile, web and internal operations.

What we deliver

API design, data models, authentication, permissions, cloud services, administration tools, third-party integrations, monitoring and migration planning.

  • Product APIs
  • Authentication and permissions
  • Operational dashboards
  • Cloud and integration architecture

What affects cost and timing

Data migration, roles, compliance, offline synchronization, legacy integrations, transaction volume and operational reporting are common drivers.

What to prepare

Share existing schemas, integrations, roles, data ownership, reliability requirements and the workflows the back end must support.

Relevant experience

Products connecting the interface to the system.

From our clients

Delivery backed by client reviews.

Underlabs Lab · Working prototype

A file, a screen, a camera.

Our applied engineering Lab explores data transfer through animated QR codes. QRDataTransfer connects a Rust sender, a browser and an iPhone receiver, with recovery of missing blocks and data verification.

Explore the experiment and demo →About the Lab
The iPhone receiver scans QR codes and reconstructs blocks.

FAQ

Common questions

Can you work with an existing back end?

Yes. We audit its contracts, data model, security and operational constraints before extending or replacing parts of it.

Do you build administration tools?

Yes. A product often needs a secure operational interface for content, users, support and reporting.

How do you plan a migration?

We map dependencies, data movement, compatibility needs, rollback paths and the smallest safe cutover sequence.