
Tenant Data Isolation: Patterns and Anti-Patterns
Explore effective patterns and pitfalls of tenant data isolation in multi-tenant systems to enhance security and compliance.
Jul 30, 2025
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Staff augmentation contracts determine who owns the code your augmented developers write, what happens when developers are replaced, how disputes are resolved, and what data your vendor can access. Signing without scrutiny costs companies six figures in IP disputes, regulatory violations, and unenforceable SLAs.
Under default IP law in most jurisdictions, an independent contractor owns the work they create — not the company that paid for it. Without an explicit IP assignment clause, the code your augmented developer wrote belongs to them, not you.
What to require: Explicit language that all work product, code, and deliverables created in performance of services are work made for hire assigned exclusively to the client. If work doesn't qualify as work-for-hire, the developer irrevocably assigns all rights to the client.
Red flag: Vague language like "intellectual property rights will be discussed" or "as agreed by parties" — that means nothing is agreed.
A contract without service levels for talent replacement, communication response, and performance benchmarks leaves you with no recourse when developers underperform or disappear.
Minimum SLAs to require:
Red flag: SLAs defined only for billing and payment, with no SLAs for actual service quality.
Staff augmentation engagements end. Your exit rights are a critical contract element.
What a fair exit clause looks like:
Red flag: Requiring 60-90 days notice with full payment, automatic renewal clauses without explicit cancellation, or early termination penalties exceeding one month's fee.
Reasonable: Non-solicitation of the named developer for 6 months post-engagement, with a placement fee if you hire them directly.
Unreasonable: Non-competes extending to the vendor's entire roster, restricting you from hiring anyone with similar skills from any other firm, or restricting your own business activities.
Red flag: Non-solicitation clauses written broadly enough to prevent you from posting a job description that could attract the developer through other channels.
Augmented developers access your production systems, codebase, databases, and internal tools. For regulated data, your vendor's security posture affects your compliance obligations directly.
Required for regulated data:
Red flag: No mention of data security, or security terms limited to a single sentence. In healthcare, finance, or with EU personal data — this is direct legal liability.
Some vendors use subcontractors — not their direct employees. This creates IP chain-of-title issues and NDA gaps.
What to require: Vendor must notify you of any subcontracting. Subcontractors must sign IP assignment and NDA agreements that flow through to you. You have the right to approve or reject subcontractors.
Red flag: No subcontracting mention in the contract, or explicit permission for subcontracting without client notification.
| Section | What It Defines |
|---|---|
| IP Assignment | All work product assigned to client, including moral rights waiver |
| NDA | Both parties, developer specifically named, post-termination period |
| SLAs | Replacement time, response SLA, 30-day probationary period |
| Exit Terms | Notice period, immediate termination for cause, transition obligations |
| Data Security | Background checks, DPA if applicable, breach notification SLA |
| Subcontracting | Prior written consent required, IP/NDA flow-through mandatory |
| Non-Solicitation | Reasonable duration (6 months), named developer only |
| Rate Adjustment | Annual cap (CPI or fixed %), USD-denominated |
Related: Essential Guide to Staff Augmentation for Tech Startups
By default under most IP law, an independent contractor owns their work product. Without an explicit IP assignment clause, the developer — not your company — owns the code they wrote. This is the most critical contract element to verify before signing any staff augmentation agreement.
10-15 business days is reasonable for most vendors. Enterprise-tier vendors often commit to 5-10 business days. Anything beyond 20 business days is too slow — by then your project timeline has slipped and your internal team has absorbed the gap.
Yes, if your augmented developers access personal data of EU residents. Your vendor is likely acting as a data processor under GDPR, requiring a Data Processing Agreement (DPA) defining what data the vendor can access, how it's used, security requirements, and breach notification timelines.
Standard is 30 days, sometimes 45-60 days for senior roles. During the probationary period, both parties should be able to exit without financial penalty. After the probationary period, the standard notice period applies.
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