800M+ professional profiles · AI-ranked matches
Search 800M+ profiles.Hire with real insight.
Signal is the AI recruiting platform for agencies, headhunters and TA teams. Open a process, describe who you need in plain language, get ranked matches with the reasons behind every score, then run LinkedIn and email sequences and your whole pipeline from one place.
Built for recruiting agencies · Headhunters · RPO · In-house TA
What Signal does
Three things, done properly
01 · Search
Every professional profile, one search
Access 800M+ professional profiles worldwide. Open a process for each role, write your brief the way you'd explain it to a colleague, and Signal turns it into filters you can edit before you spend credits — title, location, years, seniority, skills, companies and languages.
- Natural language, in English or Spanish
- Review and edit what Signal understood before you spend credits
- Every search is saved in the process — reopen it any time
Processes ›Senior Backend Engineer · Fintech · London
Senior Backend Engineer · Fintech · London
ActiveWho are you looking for?
profilesSignal understood — edit before you spend credits
20 candidates 14 new · 6 already seen
Seen doesn't use credits again
Priya Raman
InterestedSenior Backend Engineer · Kestrel Pay
Diego Fernández
SeenRepliedStaff Software Engineer · Northwind Bank
Oliver Grant
NewSenior Software Engineer · Brightwater Bank
20 candidates 14 new · 6 already seen
Seen doesn't use credits again
Priya Raman
InterestedSenior Backend Engineer · Kestrel Pay
Why Priya matches
- 8 years building backend systems — your brief asks for 6+
- Go, Kafka and PostgreSQL in production
- Fintech background: payments and ledgers
- Based in London, open to hybrid
Diego Fernández
SeenRepliedStaff Software Engineer · Northwind Bank
Camila Rojas
NewBackend Lead · Vaultly
02 · Match & insights
Real matches with real insights
Signal isn't a keyword search. Every candidate gets a match score against your brief, insight tags like fintech background or time in role, and the reasons they fit. Candidates you've already seen are marked and don't use credits again.
- A ranked match score for every candidate
- Why-they-match explanations tied to your brief
- Insight tags per candidate: background, time in role, recent promotions
- Seen candidates are marked — they don't use credits again
Keyword search
Thousands of results that just contain the words.
Signal
A ranked shortlist with the reasons behind every match.
03 · Outreach & pipeline
Every hiring process, centralized and traceable
Connect your LinkedIn account and Gmail or Outlook, run sequences from your own accounts and keep every reply in one inbox. Each process has its own pipeline — from New and Shortlist to Replied and Interested — and every touch is on the record.
- Connect LinkedIn plus Gmail or Outlook — Signal sends from your own accounts
- Sequences across LinkedIn and email, with replies in one unified inbox
- A pipeline per process with stages, bulk actions and the full history
Every candidate, every stage
Table or kanban. Select candidates to unlock contacts, move stages or add them to a sequence in one click.
Processes ›Senior Backend Engineer · Fintech · London
Senior Backend Engineer · Fintech · London
Active| Candidate | Match | Stage | Phone | Last touch | ||
|---|---|---|---|---|---|---|
Priya Raman Senior Backend Engineer · Kestrel Pay | 96% | Interested | priya.raman@kestrelpay.example | +44 7700 910 000 | in 48 min ago | |
Diego Fernández Staff Software Engineer · Northwind Bank | 94% | Replied | diego.fernandez@northwindbank.example | +44 7700 911 379 | 21h ago | |
Camila Rojas Backend Lead · Vaultly | 92% | Replied | camila.rojas@vaultly.example | ••• •••• · 4 | in 2 days ago | |
Oliver Grant Senior Software Engineer · Brightwater Bank | 91% | Invite accepted | oliver.grant@brightwaterbank.example | ••• •••• · 4 | in 3h ago | |
Aisha Bello Senior Backend Engineer · Debitly | 90% | Invite accepted | aisha.bello@debitly.example | ••• •••• · 4 | in 2h ago | |
Tomás Herrera Senior Backend Engineer · Tallyway | 89% | In sequence | tomas.herrera@tallyway.example | ••• •••• · 4 | 2h ago | |
Lucía Méndez Backend Engineer II · Pagora | 88% | In sequence | lucia.mendez@pagora.example | ••• •••• · 4 | in 2h ago | |
Kenji Watanabe Senior Engineer, Payments · Settlr | 87% | In sequence | kenji.watanabe@settlr.example | ••• •••• · 4 | in 2h ago |
One inbox for LinkedIn and email
Every conversation lives with the candidate and the process. Reply on either channel, or let AI suggest a reply.
Processes ›Senior Backend Engineer · Fintech · London
Senior Backend Engineer · Fintech · London
ActivePriya Raman
48 min agoSenior Backend Engineer · Fintech · London
inHi Elena — thanks for following up. The…
Oliver Grant
3h agoSenior Backend Engineer · Fintech · London
inHey Elena, I left Brightwater last month. Happy…
Diego Fernández
21h agoSenior Backend Engineer · Fintech · London
Hola Elena, gracias por escribir. Estoy con…
Camila Rojas
2 days agoSenior Backend Engineer · Fintech · London
inThanks Elena! Not looking right now — just…
Priya Raman
Senior Backend Engineer · Kestrel Pay
in Elena · Invitation note · LinkedIn · Oct 2 · 09:14
Hi Priya, I'm working with a London fintech that's rebuilding its payments core in Go. Your work at Kestrel Pay stood out — open to connecting?
in Invitation accepted · Oct 3 · 08:02
in Elena · LinkedIn · Oct 5 · 09:31
Thanks for connecting, Priya! Quillfin is hiring a Senior Backend Engineer to own their ledger and payouts services (Go, Kafka, Postgres). Hybrid in London. Worth a 15-min chat this week?
in Priya · LinkedIn · Oct 9 · 08:40
Hi Elena — thanks for following up. The ledger work sounds interesting. Thursday afternoon works for a quick call.
Write a reply…
Priya Raman
Senior Backend Engineer · Kestrel Pay
London, UK
Process
Senior Backend Engineer · Fintech · London
Stage
Interested ▾
Contact
- priya.raman@kestrelpay.example
- +44 7700 910 000
- in linkedin.com/in/…
Recruiter
Elena Vargas
Your accounts, protected
Connect LinkedIn and your email in a couple of minutes. Signal sends at a human pace — daily limits, working hours, random delays and auto-pause — and only reads replies to its own sequences.
Invitations, messages and reply sync
Connected as Elena Vargas
linkedin.com/in/elena-vargas
Signal sends at a human pace to protect your account
Limits are set per account and can only be lowered, never pushed past safe levels.
- Up to 20 invitations / day
- Up to 40 messages / day
- Only during your working hours
- Random delays between actions
- Auto-pause if LinkedIn shows a warning
- No activity on weekends by default
Gmail
Google Workspace
Connected
Outlook
Microsoft 365
Connect Outlook
Signal sends from your own address and only reads replies to Signal sequences. Personal email never appears in Signal.
How it works
From process to hire in four steps
Open a process
Client, role and location — searches, candidates and messages live in it
Search & review
800M+ profiles, ranked matches with insights
Reach out
LinkedIn and email sequences, at a human pace
Track
One inbox and a pipeline with the full history
Features
Everything you need to go from brief to hire
Natural-language search
Brief in English or Spanish; Signal builds the filters.
800M+ profiles
Professional profiles worldwide, complete with experience and skills.
Match score
Every candidate ranked against your brief.
Why they match
Clear reasons and insights for every profile.
Contact unlocks
Email 1 credit, phone 4 — only if a number exists. Seen candidates don't use credits again.
LinkedIn + email sequences
Send from your own accounts at a human pace, with replies in one inbox.
Pipeline per process
From New and Shortlist to Replied and Interested — as a table or kanban.
Playbooks & full history
Save a process as a playbook; every search, message and stage change stays on the record.
Signal in numbers
One platform for the whole search
professional profiles worldwide
to a ranked shortlist
in every process pipeline
product language
FAQ
Questions, answered
An AI recruiting platform: search 800M+ professional profiles in natural language, get ranked matches with insights, and manage outreach and your pipeline per project.
Yes. The free demo on this site runs on sample profiles so you can try the search flow end to end. Book a demo to see live search and the pipeline.
Searching doesn't spend contact credits. Revealing an email costs 1 credit and a phone 4, only if a number exists. Candidates you've already seen are marked and never use credits again.
Your LinkedIn account plus Gmail or Outlook. Signal sends from your own address at a human pace — daily limits, working hours, random delays and auto-pause — and only reads replies to Signal sequences.
Recruiting agencies, headhunters, RPO and in-house TA/HR teams that want one place to search, shortlist, reach out and track every process.
Search, match and hire — in one place.
Try Signal free, or book a demo to see the full flow with your team.