CoStar Group tech stack
CoStar Group builds mostly with SQL, Python, JavaScript, C#. Its stack also includes AWS, Windows, DynamoDB, Snowflake. AWS is named in 64 of the 252 job postings CoStar Group published in the last 12 months (25%). Counted by Alion from the job postings of CoStar Group, updated Oct 1, 2026.
What programming languages does CoStar Group use?
SQL is named in 21% of job postings at CoStar Group, followed by Python (17%), JavaScript (16%), C# (14%).
SQL
52 21%
Python
42 17%
JavaScript
40 16%
C#
36 14%
TypeScript
31 12%
Node JS
13 5%
Java
12 5%
PowerShell
9 4%
Show all (22)
What frameworks and libraries does CoStar Group use?
React.js is named in 6% of job postings at CoStar Group, followed by Angular (4%), PyTorch (3%), SwiftUI (2%).
React.js
16 6%
Angular
11 4%
PyTorch
8 3%
SwiftUI
4 2%
NumPy
4 2%
Pandas
4 2%
TensorFlow
4 2%
Flink
4 2%
Show all (36)
What databases does CoStar Group use?
DynamoDB is named in 7% of job postings at CoStar Group, followed by Snowflake (6%), MS SQL (5%), MySQL (5%).
DynamoDB
17 7%
Snowflake
16 6%
MS SQL
13 5%
MySQL
12 5%
PostgreSQL
10 4%
ElasticSearch
9 4%
BigQuery
8 3%
Google BigQuery
8 3%
Show all (17)
What cloud and platforms does CoStar Group use?
AWS is named in 25% of job postings at CoStar Group, followed by Windows (25%), Azure (13%), Apache Kafka (12%).
AWS
64 25%
Azure
34 13%
Apache Kafka
29 12%
.NET
23 9%
Databricks
20 8%
Kubernetes
20 8%
Show all (61)
And 21 more, each named in fewer postings.
What developer tools does CoStar Group use?
Copilot is named in 9% of job postings at CoStar Group, followed by Claude Code (7%), Terraform (6%), Git (6%).
Copilot
22 9%
Claude Code
18 7%
Terraform
16 6%
Git
14 6%
Adobe Photoshop
12 5%
Docker
11 4%
Rest API
10 4%
Show all (50)
And 10 more, each named in fewer postings.
What AI and ML technologies does CoStar Group use?
LLM is named in 3% of job postings at CoStar Group, followed by Gaussian Splatting (2%), Claude (1%), Gemini (<1%).
Which engineering practices does CoStar Group ask for?
Digital Twin is named in 36% of job postings at CoStar Group, followed by CI/CD (16%), Machine Learning (8%), ETL/ELT (7%).
CI/CD
40 16%
AI Agents
18 7%
Prompt Engineering
13 5%
SLI/SLO/SLA
12 5%
Show all (51)
And 11 more, each named in fewer postings.
What other technologies does CoStar Group use?
Abstract is named in 1% of job postings at CoStar Group.
Abstract
2 1%
What does each CoStar Group team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Operations
77 postingsBackend
30 postingsData Science
15 postingsHow does your stack fit CoStar Group?
How much does CoStar Group pay by technology?
Median stated pay of the postings that name each technology, against the median of all CoStar Group postings with stated pay: $175k across 104 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| AWS | 45 | $190k | +9% |
| SQL | 41 | $187k | +7% |
| Python | 35 | $201k | +15% |
| C# | 29 | $202k | +16% |
| Azure | 29 | $190k | +9% |
| JavaScript | 28 | $194k | +11% |
| Amazon S3 | 24 | $182k | +4% |
| Apache Kafka | 23 | $187k | +7% |
| TypeScript | 20 | $187k | +7% |
| .NET | 19 | $187k | +7% |
How is the CoStar Group 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 CoStar Group stack?
CoStar Group scores 81 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: 4; legacy ones: 0.
How common is the CoStar Group stack in its industry?
Share of the 958 companies in the same industries, whose stack Alion knows, that use each technology.
What sets CoStar Group apart
Companies with a stack like CoStar Group
The Infatuation
178 shared technologies
Chase UK
153 shared technologies
Walt Disney Company
174 shared technologies
Money Forward
130 shared technologies
JioStar
134 shared technologies
Sigma Software Group
147 shared technologies
Autodesk
165 shared technologies
Thomson Reuters
169 shared technologies
Questions about the CoStar Group tech stack
What programming languages does CoStar Group use?
The languages named in CoStar Group job postings are SQL (21%), Python (17%), JavaScript (16%), C# (14%), TypeScript (12%), as a share of the 252 postings of the last 12 months.
Does CoStar Group use React.js?
Yes. React.js is named in 16 of 252 job postings (6%) and required in 13 of them.
What cloud and platforms does CoStar Group use?
The cloud and platforms named in CoStar Group job postings are AWS (64), Windows (63), Azure (34) (postings in brackets).
What skills do you need for a Operations job at CoStar Group?
Operations postings at CoStar Group most often require Windows (55), Adobe Photoshop (11), Abstract (2), Databricks (2), out of 77 postings in the last 12 months.
Is the CoStar Group tech stack changing?
Yes. ASP.NET Core, Vue.js, Linux, Next.js first appeared in CoStar Group job postings in the last six months.
How modern is the CoStar Group tech stack?
CoStar Group scores 81 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: 4; legacy ones: 0.
How does Alion know the CoStar Group tech stack?
Alion reads every job posting CoStar Group publishes and tags the technologies each one names. The figures on this page count the 252 postings of the last 12 months and were updated on Oct 1, 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, "CoStar Group tech stack: 242 technologies from 252 job postings", as of Oct 1, 2026. https://alion.io/company/costargroup/technologies