HeartFlow tech stack
HeartFlow builds mostly with Python, JavaScript, C++, TypeScript. Its stack also includes AWS, Tableau, Pact, Playwright. AWS is named in 20 of the 30 job postings HeartFlow published in the last 12 months (67%). Counted by Alion from the job postings of HeartFlow, updated Sep 26, 2026.
What programming languages does HeartFlow use?
Python is named in 63% of job postings at HeartFlow, followed by JavaScript (23%), C++ (20%), TypeScript (20%).
C++ 
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What frameworks and libraries does HeartFlow use?
Pact is named in 13% of job postings at HeartFlow, followed by Playwright (13%), Rest-Assured (13%), Selenium (13%).
Pact
4 13%
Playwright
4 13%
Rest-Assured
4 13%
Selenium
4 13%
Django
3 10%
SQLAlchemy
3 10%
SciPy
2 7%
Seaborn
2 7%
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What databases does HeartFlow use?
Amazon Aurora is named in 10% of job postings at HeartFlow, followed by Memcached (10%), MySQL (10%), PostgreSQL (10%).
What cloud and platforms does HeartFlow use?
AWS is named in 67% of job postings at HeartFlow, followed by Tableau (23%), GitHub Actions (20%), Kubernetes (13%).
AWS
20 67%
Tableau
7 23%
GitHub Actions
6 20%
Kubernetes
4 13%
Postman
4 13%
GitHub
3 10%
Spark
3 10%
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What developer tools does HeartFlow use?
Terraform is named in 17% of job postings at HeartFlow, followed by Copilot (13%), Docker (13%), Gatling (13%).
Terraform
5 17%
Copilot
4 13%
Docker
4 13%
Gatling
4 13%
JMeter
4 13%
Locust
4 13%
k6
4 13%
Ansible
3 10%
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What AI and ML technologies does HeartFlow use?
LLM is named in 20% of job postings at HeartFlow, followed by Claude (7%).
Which engineering practices does HeartFlow ask for?
CI/CD is named in 47% of job postings at HeartFlow, followed by Machine Learning (23%), AI Agents (23%), Self-Healing (13%).
CI/CD
14 47%
AI Agents
7 23%
Self-Healing
4 13%
Computer Vision
3 10%
Fine-tuning
3 10%
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What does each HeartFlow team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Data Science
5 postingsQA
5 postingsLeadership
4 postingsSecurity
3 postingsHow does your stack fit HeartFlow?
How much does HeartFlow pay by technology?
Median stated pay of the postings that name each technology, against the median of all HeartFlow postings with stated pay: $215k across 28 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| AWS | 18 | $215k | 0% |
| Python | 17 | $215k | 0% |
| JavaScript | 7 | $205k | −5% |
| LLM | 6 | $233k | +8% |
| TypeScript | 6 | $205k | −5% |
| C++ | 6 | $190k | −12% |
| GitHub Actions | 6 | $190k | −12% |
| Tableau | 6 | $178k | −17% |
How is the HeartFlow stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the HeartFlow stack?
HeartFlow scores 78 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How common is the HeartFlow stack in its industry?
Share of the 272 companies in the same industries, whose stack Alion knows, that use each technology.
What sets HeartFlow apart
Companies with a stack like HeartFlow
Questions about the HeartFlow tech stack
What programming languages does HeartFlow use?
The languages named in HeartFlow job postings are Python (63%), JavaScript (23%), C++ (20%), TypeScript (20%), C# (13%), as a share of the 30 postings of the last 12 months.
Does HeartFlow use Pact?
Yes. Pact is named in 4 of 30 job postings (13%) and required in 4 of them.
What cloud and platforms does HeartFlow use?
The cloud and platforms named in HeartFlow job postings are AWS (20), Tableau (7), GitHub Actions (6) (postings in brackets).
What skills do you need for a Data Science job at HeartFlow?
Data Science postings at HeartFlow most often require Python (5), AWS (4), Django (3), SciPy (2), out of 5 postings in the last 12 months.
Is the HeartFlow tech stack changing?
Yes. Microsoft Excel first appeared in HeartFlow job postings in the last six months.
How modern is the HeartFlow tech stack?
HeartFlow scores 78 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How does Alion know the HeartFlow tech stack?
Alion reads every job posting HeartFlow publishes and tags the technologies each one names. The figures on this page count the 30 postings of the last 12 months and were updated on Sep 26, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "HeartFlow tech stack: 89 technologies from 30 job postings", as of Sep 26, 2026. https://alion.io/company/heartflow/technologies