Software development agreements
Set out milestones, acceptance tests, code ownership, warranties and support before work begins.
Review development termsTechnology solicitors London
Rosie's Legis advises SaaS, software, fintech, cybersecurity and AI businesses on the agreements behind their products. Get clear answers before a contract slows your next release.
Built for start-ups, scale-ups and established digital teams.
A focused legal toolkit
Your legal documents should support a sale, a launch and a sensible risk decision. We make the key terms visible.
Set out milestones, acceptance tests, code ownership, warranties and support before work begins.
Review development termsDefine uptime, support windows, maintenance, customer use and remedies in language buyers can follow.
Shape subscription termsClarify assignments, licence scope, open-source use, trade secrets and restrictions on reuse.
Protect your IP positionMap controller and processor duties, security measures, sub-processors and international transfers.
Check data obligationsSet practical controls for third-party developers, cloud suppliers, exit plans and service failures.
Plan supplier protectionAssess product claims, data use, AI governance and sector rules before they become a sales issue.
Discuss regulatory riskBuilt for recurring revenue
A good subscription contract tells customers what they receive, what happens during an outage and how either side can leave. It gives your sales team a firm position.
Small clauses matter. Liability caps, data protection and termination rights can decide whether a deal moves forward.
See online terms supportStart with the operating detail.
Ownership should be written down
A developer can write excellent code and still leave your business with an uncertain ownership position. We check who created each asset, which rights were assigned and where a licence is enough.
A common avoidable dispute
A clear development agreement can identify the owner, preserve confidentiality and keep contractor work from becoming a funding or acquisition concern.
Discuss software ownershipFintech legal advice
Fintech products can touch FCA rules, payment services, open banking, consumer duties and crypto-asset requirements. Rosie's Legis helps you identify the permissions and controls your model needs.
We can review customer terms, supplier arrangements, data flows and the route towards authorisation.
Review FCA and fintech matters“Rosie's Legis made the regulatory questions easier to act on. We left with a clear list of changes for our product and customer terms.
Fintech product lead
AI regulatory lawyer
We help teams connect governance, data protection and risk assessment to the way an AI system is built and used.
Classify the use case and record the decisions that matter.
Check lawful use, retention, security and supplier access.
Set review ownership, records and customer-facing explanations.
A clear next step
Bring the contract, product plan or regulatory question. We work with start-ups and scale-ups that need practical advice before the next decision.
Straight answers
The right answer depends on your product, users and data flows. These are useful starting points.
Usually, if one organisation processes personal data for another, a written data processing agreement is needed. It should cover instructions, security, sub-processors, assistance and what happens when the service ends.
There is no single figure. The cap should reflect fees, service risk, data exposure and exclusions for matters such as confidentiality, fraud or IP infringement. We help you set a position that fits the deal.
Use written assignments with employees and contractors, control repository access, document third-party code and protect confidential information. A software development agreement should deal with ownership before delivery.
The answer depends on the system, purpose, users, location and sector. We assess data protection duties, relevant UK requirements, contractual risk and the potential effect of the EU AI Act where your business has European connections.