Why Bidx.ai?
What We Do
ProposeX helps sales teams close £100K–£1M+ deals — fast. You’ve had the call. The client’s keen. You send the proposal… and then silence. Not because the deal’s dead — but because your momentum died. ProposeX fixes that. One trackable link. AI-written from your notes. Fully branded, personalised, ready to sign and pay — in under 5 minutes. No PDFs. No chasing. No follow-ups. Just deals closed.
Why We Built It
We We’ve spent over 20 years writing high-stakes proposals across SaaS, consulting, and enterprise — helping teams win over $1B in signed contracts and £125M in funding. But even with the right pitch, too many deals stalled. Not because of the offer — but because of how it was delivered. Proposal tools focused on formatting. We wanted something that focused on signing. So we built ProposeX: AI proposal software designed to convert. Now we use it every day — and so do fast-growing sales teams across the UK, Europe, and the US.
Meet the founders
Simon Dutta — Co-Founder, Growth & GTM
Simon helps founders and sales teams turn conversations into closed revenue. He’s helped drive over $1B in signed contracts across both public and private sectors. At ProposeX, he makes sure every proposal tells the right story — one that gets signed.
Aaron Mason — Co-Founder, Product & AI
Aaron builds AI that wins. He’s led over 40 successful high-value applications and helped teams secure £125M+ in funding. At ProposeX, he built the AI engine that turns notes into branded, ready-to-sign proposals — in minutes. His focus is making complex tech feel invisible, so sales teams can just close.