About Zelius
Zelius is the managed proposal service of Zephior, the Swiss proposal intelligence company.
Built for organizations that compete through tenders
IT services, consulting firms, SAP partners, engineering companies, and SMEs that win contracts through formal procurement processes — but don't have a dedicated proposal or bid management team.
You know your work is qualified. The problem is the process between qualification and submission. That's where we come in.
AI drafts. Experts review. You submit.
We combine Zephior's AI platform with a network of domain experts. The AI handles the heavy lifting — analyzing requirements, structuring responses, mapping compliance. The experts bring industry knowledge, persuasive writing, and the judgment that wins evaluations.
You never see the AI. You see a structured, well-written proposal draft delivered in your inbox. You retain full control over the final submission.
Swiss incorporated
All engagements are contracted through Zephior Sarl, registered in Lausanne, Switzerland (CHE-266.123.568). Services governed by Swiss Code of Obligations (Art. 394 ff.).
Your data is processed on European infrastructure. Client data is never used to train AI models. A Data Processing Agreement is available on request.
Want to learn more?
Book a call and we'll walk you through how Zelius can support your next tender.