The unglamorous part, written down.

Where required, we build and deploy inside your AWS, Azure or GCP tenancy rather than ours. Your accounts, your network boundary, your logging. For clients without an existing environment we will stand one up and transfer it, or run it under a managed arrangement — your choice, made before the build starts.

We work in client-controlled Git repositories by default. Where a client prefers we host during the build, the repository and full history transfer at handover. We do not keep a private fork of client work.

Our default position on client-funded work is that the client owns the resulting source code and intellectual property outright, on payment, subject to the final agreement. Pre-existing DaVinci components and open-source dependencies are identified in the architecture document and licensed to you rather than assigned. We will not build you a system you cannot leave with.

Documentation is a deliverable with acceptance criteria, not a closing task. Every production engagement includes:

• Architecture diagrams and decision records
• Deployment and environment documentation, as infrastructure-as-code wherever possible
• Operational runbooks, including failure modes and rollback
• API and integration documentation
• Handover material written for an engineer who has never met us

Least-privilege access, requested per role and per environment, with production access limited to the smallest set of people the work requires. Secrets live in your secrets manager, never in code, tickets or chat. Access is reviewed at each phase boundary, and offboarding — ours and yours — is a documented checklist with credential revocation, not an email.

We tell you exactly where your data goes. If a system calls a third-party model provider, that is stated in the architecture document with the provider, the endpoint, the data classification sent and the contractual terms it runs under — normally your own enterprise agreement with that provider, not ours. Where data cannot leave your boundary, we design for models running inside it and say so at architecture rather than discovering it at security review. We do not make claims about a provider’s training or retention behaviour beyond what that provider’s contract and configuration actually support.

Threat modeling at architecture, dependency and license review in the pipeline, structured logging and auditability built in rather than added, and secure code review on anything touching authentication, authorization, payments or regulated data. We support your security review directly — questionnaires, architecture walkthroughs and remediation are in scope, and we would rather your team found something than a penetration tester did.

Nothing goes live without monitoring, alerting, a tested rollback path and a named incident owner. We hold a stabilization window after launch — typically 30 days, agreed at kickoff — during which production incidents are ours regardless of cause, with the technical lead who built the system on the response. At the end of that window we transition to the support model agreed before the build began.

• Transfer — your team takes operation, with a paired handover period behind them
• Managed support — we retain incident response and enhancement against agreed response targets
• Retained architecture — your team operates, a principal stays on for architectural decisions and quarterly review

No single-person dependency on either side. Every engagement runs with role-level redundancy — principal sponsor, technical lead, engineering pod, QA and platform support — and system context is documented rather than held in one head. We staff for the case where someone leaves, because someone eventually does. We do not publish a roster of individual engineers; you get named accountability at the principal and technical lead level, and continuity guaranteed at the pod level.

We will sign yours, or send ours the same day you ask. Much of our delivery is under mutual non-disclosure and stays that way permanently — we do not name clients, describe systems or use logos without written permission, and the two named references on this site are named because we asked and they agreed.

DaVinci Development carries professional liability (errors & omissions) and cyber liability insurance. Certificates are available on request and we will name your entity as required by your procurement process.

On formal certification we would rather be precise than impressive: we do not currently hold SOC 2 or ISO 27001. We operate to the control set described on this page, we build inside our clients’ certified environments and to their control frameworks, and we support customer security reviews directly. If your procurement process requires a certified vendor of record, tell us at the diagnostic and we will say plainly whether we can meet it.