Documents you sign every day
- Non-disclosure agreements (NDAs)
- Contracts with clients and partners
- Agreements with collaborators and team
- Term sheets and letters of intent
How Startups use it
When you raise capital or close a deal
NDAs, letters of intent and investor agreements get signed in hours, not days of back-and-forth email.
When you build the founding team
Employment contracts, vesting and confidentiality agreements go out from your phone the moment someone accepts an offer.
When you scale operations
Vendor and client contracts get standardized into a template and signed without friction, without slowing the team down.
Before and after Firmiu
Why choose Firmiu
Speed
Sign remotely with any party, without coordinating in-person meetings.
Scales with you
From your first client to unlimited documents depending on your plan.
Every agreement documented
The audit trail backs who signed what and when.
How Firmiu works
Upload your PDF
Upload the document and enter the name and email of the person who must sign.
The signer receives a link
They get an email with a unique link and a verification code.
Signed document
The PDF is signed with its audit trail, ready to download.
Frequently asked questions
- Does it work for signing with investors?
- Yes, for most private agreements and letters of intent.
- Can I sign with parties in other countries?
- Yes. Electronic signatures are recognized across Latin America, Spain and the US.
- Is it secure?
- Yes. Documents are stored encrypted and with temporary signed links.
- Does it work for agreements with investors in other countries?
- Yes. Each signer gets their link in their own language and signs from wherever they are, no time-zone coordination needed.
- Can I sign agreements with several co-founders at once?
- Yes, up to 5 signers per document, in parallel or in the order you set.
- How fast can I start using Firmiu?
- You create a free account and send your first document for signature in minutes, no install required.
Guide reviewed and updated: July 2026.
Electronic signatures in your country
Related guides
How to sign a non-disclosure agreement (NDA) online
Before sharing sensitive information, sign the NDA. Here's how to do it online in minutes.
Electronic signature for businesses: a practical guide
Rolling out electronic signatures in your company saves time and paper. Here's where to start.
A DocuSign alternative for Latin America
Looking for a simpler, Spanish-first option to sign documents? Here's what to look for in an alternative.
Digital signatures for other professions
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