Ascertain
ascertain.com
Actively hiring
Care Coordination & Population Health
View 3 jobs
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Overview
Connections
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$37.4M
3 rounds on record
Latest round
$20M
Venture round · Oct 2026 · this month
Team
51-200
employees, estimated range
Hiring now
6
open roles
Backers
1
Deerfield Management
The money's age
Fresh money
0 months since the last round · hiring slowed
Momentum
20/100
fresh money
Last sign of life
1 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
Oct 20
Board appointment Courtney Marcin, Director · SEC Form D
Oct 5
Raised a round Venture round $20M · SEC Form D
Apr 11, 2025
Raised a round Venture round $10M · SEC Form D
Mar 28, 2024
New executive Gregg Fergus, Executive Officer, Director · SEC Form D
Mar 11, 2024
Raised a round Venture round $7.4M · SEC Form D
2022
Founded
Tractionpublic signals, read monthly
Web presence
top 6%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Oct 2026 | $20M | — | SEC Form D |
| Venture round | Apr 2025 | $10M | — | SEC Form D |
| Venture round | Mar 2024 | $7.4M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | Ascertain Systems, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Mark MichalskiExecutive Officer, DirectorSEC Form D
Marc BergerExecutive OfficerSEC Form D
Gregg FergusExecutive Officer, DirectorSEC Form D
Laurence KraemerExecutive OfficerSEC Form D
Carlos DedesmaExecutive OfficerSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
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How Ascertain hires
Truth index
A 94/100
Median time to fill
22 days
Ghost roles
0%
Stale roles
25%
Reposted roles
0%
Ascertain scores A on the Alion truth index (A is best, E worst), measured over 4 open roles re-checked against its own hiring board: 0% look like ghost listings, 25% have gone stale and 0% are the same role posted again. Its roles close in a median of 22 days. 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
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Deerfield ManagementVia a fund
29 portfolio companies: Recovery Centers of America, SHINE Technologies, Reprieve Cardiovascular and 26 more
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
Tech stack
Technologies named in job postings at Ascertain over the last 12 months, by layer, with the share of postings for each.
Technologies in use
19
Postings analysed
12
Stack modernity
83/100AI adopter
Languages
SQL33%
Python25%
TypeScript17%
Frameworks & libraries
FastAPI17%
Databases
PostgreSQL17%
Redis17%
Cloud & platforms
GCP17%
AI & ML
LLM17%
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Full Ascertain tech stack
19 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$195k
Typical range
$150k – $205k
Open positions
6
6
Jobs
Senior
50%
Architect
50%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 3 | $200k | $175k – $205k |
| Architect | 3 | $195k | $150k – $195k |
Highest paying role
Senior Product Manager
$205k
Normalized to USD per year
All salaries at Ascertain
By role, level and city, against the market · 6 jobs with pay
People
Mark Michalski
Executive Officer, Director
Marc Berger
Executive Officer
Gregg Fergus
Executive Officer, Director
Laurence Kraemer
Executive Officer
Carlos Dedesma
Executive Officer
Moses Adubi
Director
Konstantine Costalas
Director
John Beadle
Director
Courtney Marcin
Director
Julian Harris
Director
Ari Shamiss
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
55/100
Growing
Open positions
6
2 opened / 5 closed in 30 days
Median time-to-fill
23 days
faster than 54% of the market
ATS activity
Every ~5 hours
Today
Hiring Dynamics
0%
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.
Backend
18% ▲
Product
18% ▼
Sales
18% ▲
Solutions
18% ▲
Administrative
9% ▼
Management
9% ▼
Activity Timeline
Added HL7 to stack
Oct 2026
Added FHIR to stack
Oct 2026
Added GCP to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
New York
United States
HQ
2 posted in 90 days 50-200 est. staff
Earlier presence
Durham, United States
Jobs
$160k – $205k per year · Remote (United States) · Full-Time · 4+ years exp
AI Agents
LLM
Apply
$175k – $200k per year · Remote (United States) · Full-Time · 5+ years exp
Python
TypeScript
SQL
FastAPI
Databases
PostgreSQL
Redis
AI/ML
AI Agents
DevOps
Terraform
GCP
CI/CD
Docker
Apply
$130k – $175k per year · Remote (United States) · Full-Time · 5+ years exp
Python
SQL
AI Agents
LLM Guardrails
DevOps
Rest API
MedTech
HL7
FHIR
Apply