BlackLine tech stack
BlackLine builds mostly with Python, C#, SQL, Java. Its stack also includes AWS, GCP, Snowflake, PostgreSQL. Python is named in 29 of the 74 job postings BlackLine published in the last 12 months (39%). Counted by Alion from the job postings of BlackLine, updated Nov 11, 2026.
What programming languages does BlackLine use?
Python is named in 39% of job postings at BlackLine, followed by C# (34%), SQL (32%), Java (18%).
C# 
Show all (15)
What frameworks and libraries does BlackLine use?
React.js is named in 11% of job postings at BlackLine, followed by LangChain (8%), LangGraph (5%), Angular (4%).
React.js
8 11%
LangChain
6 8%
LangGraph
4 5%
Angular
3 4%
PyTorch
3 4%
Vue.js
3 4%
Lottie
2 3%
TensorFlow
2 3%
Show all (21)
What databases does BlackLine use?
Snowflake is named in 16% of job postings at BlackLine, followed by PostgreSQL (14%), Google BigQuery (4%), MS SQL (4%).
Snowflake
12 16%
PostgreSQL
10 14%
Google BigQuery
3 4%
MS SQL
3 4%
MySQL
3 4%
Pinecone
3 4%
Weaviate
3 4%
MariaDB
1 1%
Show all (10)
What cloud and platforms does BlackLine use?
AWS is named in 38% of job postings at BlackLine, followed by GCP (36%), Azure (35%), Kubernetes (22%).
AWS
28 38%
GCP
27 36%
Azure
26 35%
Kubernetes
16 22%
Apache Kafka
14 19%
.NET
12 16%
RabbitMQ
7 9%
Show all (52)
And 12 more, each named in fewer postings.
What developer tools does BlackLine use?
Cursor is named in 18% of job postings at BlackLine, followed by Terraform (14%), Docker (12%), Rest API (11%).
Cursor
13 18%
Terraform
10 14%
Docker
9 12%
Rest API
8 11%
Git
6 8%
Jenkins
4 5%
Show all (38)
What AI and ML technologies does BlackLine use?
Claude is named in 39% of job postings at BlackLine, followed by LLM (18%), Gemini (9%), ChatGPT (7%).
Which engineering practices does BlackLine ask for?
AI Agents is named in 41% of job postings at BlackLine, followed by CI/CD (32%), Human-in-the-Loop (22%), LLM Guardrails (15%).
AI Agents
30 41%
CI/CD
24 32%
RAG
9 12%
Prompt Engineering
7 9%
Show all (32)
What does each BlackLine team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
22 postingsFinance
10 postingsProduct
6 postingsLeadership
5 postingsAI/ML
4 postingsSecurity
3 postingsHow does your stack fit BlackLine?
How much does BlackLine pay by technology?
Median stated pay of the postings that name each technology, against the median of all BlackLine postings with stated pay: $219k across 37 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| GCP | 13 | $228k | +4% |
| AWS | 12 | $235k | +7% |
| Azure | 10 | $227k | +4% |
| Claude | 10 | $226k | +3% |
| C# | 9 | $226k | +3% |
| Python | 8 | $235k | +7% |
| SQL | 7 | $219k | 0% |
| LLM | 6 | $275k | +25% |
| Java | 6 | $260k | +19% |
| Apache Kafka | 6 | $227k | +4% |
How is the BlackLine 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 BlackLine stack?
BlackLine 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: 7; legacy ones: 0.
How common is the BlackLine stack in its industry?
Share of the 525 companies in the same industries, whose stack Alion knows, that use each technology.
What sets BlackLine apart
Companies with a stack like BlackLine
Questions about the BlackLine tech stack
What programming languages does BlackLine use?
The languages named in BlackLine job postings are Python (39%), C# (34%), SQL (32%), Java (18%), JavaScript (16%), as a share of the 74 postings of the last 12 months.
Does BlackLine use React.js?
Yes. React.js is named in 8 of 74 job postings (11%) and required in 4 of them.
What cloud and platforms does BlackLine use?
The cloud and platforms named in BlackLine job postings are AWS (28), GCP (27), Azure (26) (postings in brackets).
What skills do you need for a Backend job at BlackLine?
Backend postings at BlackLine most often require C# (16), GCP (14), AWS (13), Azure (13), out of 22 postings in the last 12 months.
Is the BlackLine tech stack changing?
No new technology has appeared in BlackLine job postings in the last six months.
How modern is the BlackLine tech stack?
BlackLine 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: 7; legacy ones: 0.
How does Alion know the BlackLine tech stack?
Alion reads every job posting BlackLine publishes and tags the technologies each one names. The figures on this page count the 74 postings of the last 12 months and were updated on Nov 11, 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, "BlackLine tech stack: 175 technologies from 74 job postings", as of Nov 11, 2026. https://alion.io/company/blackline-com/technologies