CoStar Group tech stack
CoStar Group builds mostly with SQL, Python, TypeScript, C#. Its stack also includes AWS, Azure, MS SQL, DynamoDB. AWS is named in 25 of the 53 job postings CoStar Group published in the last 12 months (47%). Counted by Alion from the job postings of CoStar Group, updated Oct 14, 2026.
What programming languages does CoStar Group use?
SQL is named in 38% of job postings at CoStar Group, followed by Python (32%), TypeScript (32%), C# (30%).
SQL
20 38%
Python
17 32%
TypeScript
17 32%
C#
16 30%
JavaScript
14 26%
MATLAB
4 8%
PowerShell
4 8%
Java
4 8%
Show all (16)
What frameworks and libraries does CoStar Group use?
React.js is named in 13% of job postings at CoStar Group, followed by Angular (13%), ASP.NET Core (6%), Vue.js (6%).
React.js
7 13%
Angular
7 13%
ASP.NET Core
3 6%
Vue.js
3 6%
Next.js
2 4%
Three.JS
2 4%
OpenCV
2 4%
PyTorch
2 4%
Show all (18)
What databases does CoStar Group use?
MS SQL is named in 15% of job postings at CoStar Group, followed by DynamoDB (15%), Snowflake (11%), MySQL (11%).
MS SQL
8 15%
DynamoDB
8 15%
Snowflake
6 11%
MySQL
6 11%
ElasticSearch
4 8%
OpenSearch
3 6%
BigQuery
2 4%
Google BigQuery
2 4%
Show all (11)
What cloud and platforms does CoStar Group use?
AWS is named in 47% of job postings at CoStar Group, followed by Azure (28%), .NET (23%), Apache Kafka (19%).
AWS
25 47%
Azure
15 28%
.NET
12 23%
Apache Kafka
10 19%
GCP
8 15%
Databricks
5 9%
AWS Lambda
5 9%
Show all (36)
What developer tools does CoStar Group use?
Copilot is named in 11% of job postings at CoStar Group, followed by GraphQL (11%), Docker (9%), Rest API (9%).
Copilot
6 11%
GraphQL
6 11%
Docker
5 9%
Rest API
5 9%
Claude Code
4 8%
Git
4 8%
Cursor
3 6%
pySpark
3 6%
Show all (19)
What AI and ML technologies does CoStar Group use?
LLM is named in 4% of job postings at CoStar Group, followed by Claude (4%), Gemini (2%), VLM (2%).
Which engineering practices does CoStar Group ask for?
Digital Twin is named in 30% of job postings at CoStar Group, followed by CI/CD (25%), Machine Learning (25%), Prompt Engineering (15%).
CI/CD
13 25%
Prompt Engineering
8 15%
SLI/SLO/SLA
5 9%
AI Agents
5 9%
Show all (26)
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.
Backend
15 postingsSecurity
5 postingsIndustrial Engineering
4 postingsData Science
4 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: $154k across 27 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 15 | $120k | −22% |
| AWS | 14 | $164k | +6% |
| SQL | 14 | $154k | 0% |
| Azure | 10 | $182k | +18% |
| C# | 9 | $170k | +10% |
| TypeScript | 8 | $162k | +5% |
| DynamoDB | 7 | $187k | +21% |
| JavaScript | 7 | $170k | +10% |
| Apache Kafka | 6 | $154k | 0% |
| .NET | 6 | $147k | −5% |
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 84 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 589 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
CoStar Group
126 shared technologies
Nike
99 shared technologies
SailPoint
93 shared technologies
Sony Group
108 shared technologies
Creative Chaos
92 shared technologies
Ekfrazo Technologies
92 shared technologies
Sigma Software Group
105 shared technologies
Cox Communications
89 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 (38%), Python (32%), TypeScript (32%), C# (30%), JavaScript (26%), as a share of the 53 postings of the last 12 months.
Does CoStar Group use React.js?
Yes. React.js is named in 7 of 53 job postings (13%) and required in 5 of them.
What cloud and platforms does CoStar Group use?
The cloud and platforms named in CoStar Group job postings are AWS (25), Azure (15), .NET (12) (postings in brackets).
What skills do you need for a Backend job at CoStar Group?
Backend postings at CoStar Group most often require C# (12), SQL (11), .NET (9), TypeScript (8), out of 15 postings in the last 12 months.
Is the CoStar Group tech stack changing?
Yes. OpenSearch, Cloudflare, LLM, LLM Guardrails first appeared in CoStar Group job postings in the last six months.
How modern is the CoStar Group tech stack?
CoStar Group scores 84 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 53 postings of the last 12 months and were updated on Oct 14, 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: 130 technologies from 53 job postings", as of Oct 14, 2026. https://alion.io/company/costar/technologies