Constructor tech stack
Constructor builds mostly with Python, SQL, JavaScript, TypeScript. Its stack also includes AWS, GitHub Actions, ClickHouse, PostgreSQL. Python is named in 31 of the 59 job postings Constructor published in the last 12 months (53%). Counted by Alion from the job postings of Constructor, updated Sep 28, 2026.
What programming languages does Constructor use?
Python is named in 53% of job postings at Constructor, followed by SQL (27%), JavaScript (17%), TypeScript (12%).
C# 
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What frameworks and libraries does Constructor use?
NumPy is named in 10% of job postings at Constructor, followed by React.js (10%), FastAPI (8%), Django (5%).
NumPy
6 10%
React.js
6 10%
FastAPI
5 8%
Django
3 5%
Flask
3 5%
PyTorch
3 5%
Pytest
2 3%
Accelerate
1 2%
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What databases does Constructor use?
ClickHouse is named in 10% of job postings at Constructor, followed by PostgreSQL (10%), MySQL (7%), OpenSearch (7%).
ClickHouse
6 10%
PostgreSQL
6 10%
MySQL
4 7%
OpenSearch
4 7%
DynamoDB
2 3%
Presto
1 2%
BigQuery
1 2%
Google BigQuery
1 2%
Show all (11)
What cloud and platforms does Constructor use?
AWS is named in 31% of job postings at Constructor, followed by GitHub Actions (15%), Azure (12%), GCP (12%).
AWS
18 31%
GitHub Actions
9 15%
Azure
7 12%
GCP
7 12%
GitHub
7 12%
Grafana
7 12%
Spark
7 12%
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What developer tools does Constructor use?
Terraform is named in 14% of job postings at Constructor, followed by Jenkins (12%), CloudFormation (8%), Prometheus (8%).
Terraform
8 14%
Jenkins
7 12%
CloudFormation
5 8%
Prometheus
5 8%
pySpark
5 8%
Docker
3 5%
CircleCI
2 3%
Pulumi
2 3%
Show all (13)
What AI and ML technologies does Constructor use?
LLM is named in 8% of job postings at Constructor, followed by Claude (2%).
Which engineering practices does Constructor ask for?
A/B Testing is named in 56% of job postings at Constructor, followed by Machine Learning (27%), CI/CD (19%), AI Agents (8%).
CI/CD
11 19%
AI Agents
5 8%
Tokenization
4 7%
Embeddings
3 5%
Show all (18)
What does each Constructor team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
15 postingsAnalytics
7 postingsHow does your stack fit Constructor?
How is the Constructor 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 Constructor stack?
Constructor 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: 2; legacy ones: 0.
How common is the Constructor stack in its industry?
Share of the 138 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Constructor apart
Companies with a stack like Constructor
Questions about the Constructor tech stack
What programming languages does Constructor use?
The languages named in Constructor job postings are Python (53%), SQL (27%), JavaScript (17%), TypeScript (12%), Rust (10%), as a share of the 59 postings of the last 12 months.
Does Constructor use NumPy?
Yes. NumPy is named in 6 of 59 job postings (10%) and required in 6 of them.
What cloud and platforms does Constructor use?
The cloud and platforms named in Constructor job postings are AWS (18), GitHub Actions (9), Azure (7) (postings in brackets).
What skills do you need for a Backend job at Constructor?
Backend postings at Constructor most often require Python (11), AWS (8), SQL (6), Amazon CloudWatch (5), out of 15 postings in the last 12 months.
Is the Constructor tech stack changing?
No new technology has appeared in Constructor job postings in the last six months.
How modern is the Constructor tech stack?
Constructor 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: 2; legacy ones: 0.
How does Alion know the Constructor tech stack?
Alion reads every job posting Constructor publishes and tags the technologies each one names. The figures on this page count the 59 postings of the last 12 months and were updated on Sep 28, 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, "Constructor tech stack: 95 technologies from 59 job postings", as of Sep 28, 2026. https://alion.io/company/constructor-3/technologies