Mainstay
mainstaylabs.com
Actively hiring
Real Estate AI
PropTech
View 1 job
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Overview
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$25M
1 round on record
Latest round
$25M
Venture round · Jul 2024 · 2 yr ago
Team
177
US Form 5500 (plan participants) · Jul 2025
The money's age
Long since its last round
26 months since the last round · not hiring
Momentum
0/100
no fresh signals
Last sign of life
4 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Jul 2024 | $25M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | Mainstay Labs Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
J.d. RasmussenExecutive OfficerSEC Form D
Dod FraserExecutive Officer, DirectorSEC Form D
John AlbersExecutive OfficerSEC Form D
Nate HarbacekExecutive OfficerSEC Form D
How Mainstay hires
Truth index
B 75/100
Ghost roles
0%
Stale roles
100%
Reposted roles
0%
Mainstay scores B on the Alion truth index (A is best, E worst), measured over 7 open roles re-checked against its own hiring board: 0% look like ghost listings, 100% have gone stale and 0% are the same role posted again. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Overview
Mainstay is a market intelligence platform built for buying, managing and selling homes in the single family rental industry, which turns complex data into insights using AI. It was founded within Opendoor, launched as an independent company in 2024 and raised a Series A round led by Khosla Ventures. The company is headquartered in Tempe, Arizona, United States.
Tech stack
Technologies named in job postings at Mainstay over the last 12 months, by layer, with the share of postings for each.
Technologies in use
22
Postings analysed
4
Stack modernity
90/100AI adopter
Languages
SQL
Python
TypeScript
JavaScript
Frameworks & libraries
React.js
Django
FastAPI
Next.js
Databases
PostgreSQL
Snowflake
Cloud & platforms
AWS
GitHub
AI & ML
Claude
LLM
ChatGPT
Gemini
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Full Mainstay tech stack
22 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$127k
Typical range
$113k – $140k
Open positions
2
2
Jobs
Senior
50%
Staff
50%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 1 | $113k | $113k |
| Staff | 1 | $140k | $140k |
Highest paying role
Agent Operations Lead
$140k
Normalized to USD per year
People
J.d. Rasmussen
Executive Officer
Dod Fraser
Executive Officer, Director
John Albers
Executive Officer
Nate Harbacek
Executive Officer
Carrie Wheeler
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
58/100
Growing
Open positions
9
0 opened / 0 closed in 30 days
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Operations
100% ▲
Activity Timeline
Added Slack to stack
Oct 2026
Added Gemini to stack
Oct 2026
Added ChatGPT to stack
Oct 2026
Added SQL to stack
Oct 2026
Added ResNet to stack
Oct 2026
Added Microsoft Excel to stack
Oct 2026
Added Claude to stack
Oct 2026
Added LLM Guardrails to stack
Aug 2026
Added GitHub to stack
Aug 2026
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
1
Countries
1
Busiest office
San Francisco
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Headquarters
Builds here
Office with open vacancies
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Tempe
United States
HQ
San Francisco
United States
Engineering / R&D
1 open roles 100% engineering 50-200 est. staff
hires for Backend
Jobs
≈ $161k – $294k per year (Estimated) • Hybrid • Full-Time • 5+ years exp • San Francisco
Python
JavaScript
TypeScript
FastAPI
Django
Databases
PostgreSQL
Snowflake
AI/ML
dbt
LLM
Hallucination
LLM Guardrails
Frontend
Next.js
React.js
DevOps
Terraform
AWS
GitHub
Apply
Financials
Total raised
$25M
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2024 | $25M | Details |