27hrs
Payroll, onboarding, leave, and compliance, on autopilot.
The AI HR department
Built for lean HR teams
Run HR like you have a team of ten.
MambaHR takes the admin: onboarding, time off, leave, payroll-ready exports, and compliance in all 50 states. You keep the judgment calls, the coaching, and the hours you never had. Live in a day.
Works 24/7Live in a dayBuilt by HR operators
app.mambahr.com
Good morning, Brian
Monday, June 10Needs you32 urgent · oldest 38 min
Handled today18
Hours saved27this wk↑ 6 vs last week
Needs your approval3
Offer · Maya ChenUrgent
Senior Engineer · $195k · above band 8%
ApproveDecline
Comp change · Tom HarrisonReview
+12% merit raise · within band
ApproveDecline
Handled automatically · earlier today
Emma RodriguezTime off approved · 3 days9:02 AM
Alex ParkOnboarding complete · Day 1 ready9:07 AM
Jordan LeeAddress + tax details updated8:41 AM
Switch from your current HRIS in a day
GustoWorkdayRipplingBambooHRNamelyADPMMambaHR
One-click import: people, pay history, time-off balances, documents. Nothing left behind.
You bought the software. You still do the work.
Every HRIS needs people clicking the buttons. For every dollar spent on the system, companies spend six on the humans operating it. MambaHR does the clicking, so your people get that six back.
53%
of companies penalized for payroll noncompliance in five years
$4,700
average cost to hire one employee
57%
of HR time goes to admin duties, not strategy
Sources: Alight payroll compliance study, SHRM cost-per-hire benchmark, and Eddy HR operations report.
“I was hired to build a great place to work. Instead, I spend my days buried in paperwork.”
Head of People · SaaS company, 300 peopleWhy MambaHR
Your HRIS hosts the work. MambaHR does it.
Same employee data. Same compliance. One difference: who actually pushes the buttons.
Monday, with your HRISRippling · Gusto · Workday · BambooHR
File the I-9, chase E-Verify45 min
Hunt down the right approver3 emails
Google the multi-state leave rule1 hr + Legal
Build the headcount report2 hrs
Onboard the new hire, click by clickhalf a day
Answer the same PTO question. Again.daily
Still yours to do ≈ 9 hrs / week
MMambaHRMambaHR · working
Monday, with the AI HR department
I-9 filed, E-Verify cleared9:02 AM
Routed and approved in policy9:04 AM
Answered, statute attached9:06 AM
Report generated on ask9:11 AM
Day-one ready, accounts and all9:14 AM
Answered in Slack, instantlyalways
Still yours the judgment call
Built for HR teams
We do the paperwork part.
HR is a people job. MambaHR takes the admin duties so your team does the work only humans can; the coaching, the culture, the hard conversations.
- The agent handles the filings, approvals, and follow-ups
- Your team keeps the judgment calls and the relationships
- Every action logged, nothing happens without a trail
MambaHR · done
Leave approved · Maya Chen
Calendar blocked · manager notified · logged
Where your team already works
Lives in Slack and Teams.
No new tool to learn. No portal to log into. Your team messages @MambaHR like a coworker. It reads the thread, checks your policy, does the work, and logs it.
Slack
Mention it in any channel or DM
Microsoft Teams
Same agent, same memory
The MambaHR app
Approvals, records, and the full trail
Every action logged. One record of everything, everywhere.
Search MambaHR#people-ops12
Maya Chen
@MambaHRI need 3 days off next week, Mon–Wed for a wedding
M
MambaHRAPP
Approved. Enjoy the wedding.
Balance12 → 9 days
CalendarApr 7–9 blocked, OOO set
ManagerB. Bell notified
Logged · within policy · ref leave_4f81a2
MambaHR is updating the payroll record…
Message #people-ops
The whole lifecycle
From the offer letter to the exit interview.
One agent runs the entire employee journey. Pick a stage; everything in it is handled, cited, and logged.
MambaHR · offer signed
From job post to signed offer, without the chase.
The role goes up, the best candidates surface, and the offer is signed before the competition even calls back.
Compliance handledEEO-1E-signed
Maya Chen
Senior Engineer · joining
Job posted, candidates screened9:02
Offer drafted at the right salary9:38
Signed, same morning11:15
What you get back
Give your HR team their week back.
MambaHR hands the average HR team 27 hours back, every single week. Time that goes to the people, not the paperwork.
70%
of HR admin, goneThe chasing, filing, and updating that filled your week, handled.
The old wayhalf a day
With MambaHR4 min
Paperwork, logins, and first week, ready before they arrive.
$95k+
Back into your people budgetA full generalist’s workload of admin, from $24k a year. The rest funds the work only people can do.
Modeled from the admin hours these workflows take a lean team today, not measured customer averages. We will publish real numbers once our first customers are live.
Violet · California
“I’m having a baby in June. How much leave can I take?”
MambaHR 6 seconds later
Up to 4 months disability, then 12 weeks bonding.Booked, filed, done. Cites CA PDL, CFRA, and FMLA.
Stay compliant
Right answer. Backed by law.
Employment law changes almost every week. MambaHR keeps up. A human signs off on the big calls.
All 50 statesEvery answer cites the lawZero guesswork
What it looks like
A week on MambaHR, start to finish.
MambaHR is onboarding its first customers now, so these are written illustrations of the workflow rather than customer quotes. We will publish real ones the moment we have them.
Illustrative scenario
“By week two, MambaHR has taken leave and onboarding off the desk completely. The week goes to people, not paperwork.”
Head of People · Robotics startup, 240 people
12 hrs
of admin, handled weekly
1 day
to switch over
240
employees · 2 in HR
“Multi-state leave used to mean a week of emails with Legal. The answer comes back in seconds, with the law attached.”
People Operations Lead · AI startup, 180 people
“Switch on a Friday, run payday Monday. Every change is already in the file.”
Head of People · Fintech startup, 140 people
Pricing
Priced like software. Works like a team.
The admin workload that eats a full-time generalist’s week runs from $24k a year here. Your team spends that week on people instead.
HR Starter
For teams of 50–150
$14/employee/mo
$9k/yr minimum
Run HR properly before you hire HR.
- Employee records & org chart
- Onboarding & offboarding, done
- Every employee question, answered
- Time off & leave handled
- Payroll-ready exports
Most popular
HR Ops Manager
For teams of 75–400
$22/employee/mo
$24k/yr minimum
A full HR ops workload, for a tenth of the cost.
- Everything in Starter
- Hiring: reqs, candidates & interviews
- Offers sent, approvals routed
- Payroll runs & change reports
AI HR Department
For teams of 150+
$30/employee/mo
$48k/yr minimum
Your whole HR department, run for you.
- Everything in Ops Manager
- Layoffs & reorgs, done right
- Deep compliance + full audit trail
- SSO & custom workflows
Enterprise
For 1,000+ and multi-entity
Custom
from $100k/yr
For complex orgs with procurement to satisfy.
- Everything in AI HR Dept
- Custom implementation
- Procurement & security review
- Enterprise integrations
Before you ask
The questions every people leader has.
Straight answers. No sales call required.
Do we replace our current HRIS, or run alongside it?
We replace it. MambaHR becomes your system of record for people, pay, time off, and compliance. We pull everything from Gusto, Workday, Rippling, BambooHR, Namely, or ADP, and most teams are fully moved in a single day. Nothing left behind.
How fast can we be up and running?
Live the next morning: a day of setup, not months of rollout. Day one we import your people data and you set your approval rules on one screen. Your team keeps working in Slack and Teams the whole time, and most employees never notice the switch, except that HR got faster.
Is our people data safe?
Yes. Encrypted in transit and at rest, role-based access, and a full audit trail on every change. Your data stays in the US, and we never train AI on it; that one is in your contract.
What happens if it gets something wrong?
Sensitive calls (offers above band, terminations, anything high-stakes) always come to you first. Everything else is logged, reversible, and shows the rule it followed. You can override anything, and nothing happens without a trail.
Are we still compliant, and who is liable?
You are always the employer. MambaHR makes that easier, not riskier. Every answer cites the law behind it, federal and all 50 states, kept current. Anything ambiguous routes to a human before it happens.
Who is MambaHR built for?
Lean HR teams at growing companies: two or three humans supporting hundreds of employees, buried in admin. If your HR team spends more time filing than talking to people, this was built for you.
Field guides
Hard-won HR playbooks. Free.
Practical guides for the parts of the job no one warns you about.
MMambaHR
Field guide № 01
The Defensible Layoff Playbook
A people leader’s field guide
The Defensible Layoff Playbook
A step-by-step guide for running a reduction in force that holds up in court: notice and severance by state, WARN thresholds, selection criteria, and the scripts for every conversation.
- State-by-state notice & severance rules
- WARN Act thresholds and timing
- Defensible selection criteria
- Manager, employee, and team scripts
More guides
Multi-State Leave Compliance ChecklistComing soon
The First-90-Days Onboarding KitComing soon
Get started
Hire the agent. Promote the human.
A live demo in 30 minutes. Live the next morning.
Switch in a dayYour data stays in the USA human on the big calls