The company

Senior engineering capacity,
under your contract.

Backend and platform engineering for organisations across the European Union and the United Kingdom, delivered within your environment and governed by your own contract.

01Scope of services

The work

Engineering on contract

Backend and platform engineering, engaged by the day or by the sprint: services and APIs, build and deployment, and single sign-on. Delivered within your environment and under your contract.

What we take on →

The boundary

No standing access

Your credentials stay yours, your infrastructure stays yours, and nothing of ours remains in the delivery path once the engagement concludes.

A smaller surface in your security review, and no dependency to unwind afterwards.

Engagements are led by a technical lead and platform architect with more than a decade of backend and platform engineering across banking, telecommunications and identity verification. That record includes systems taken through security and compliance certification, a reporting architecture designed for one billion transactions, and development teams led through the transition from a monolith to microservices.

02Engagement model

Engagements operate on an embedded basis rather than as an external supplier: your backlog, your review process and your release cadence, with work delivered through the same channels as any other member of the team.

The distinction is contractual rather than operational: no headcount approval, no notice period and no termination process, and the engagement concludes when the work does. Where senior capacity is required for a defined period rather than on a permanent basis, this is faster to arrange and carries no exit cost.

03Commercial terms

Oak 9 Digital is established in Croatia and operates across the European Union and the United Kingdom. Contracts are executed under your own governing law and venue.

Invoicing is EU business-to-business under the reverse charge, with Peppol e-invoicing for public bodies required to receive structured invoices. Supplier questionnaires are completed in your own template and returned in writing.

Direct access to senior engineering

Enquiries are handled directly by the engineer responsible for delivery, without an intermediate sales process.