1C tech stack
1C builds mostly with Python, Java, SQL, C++. Its stack also includes Linux, PostgreSQL, MS SQL, Windows. Python is named in 15 of the 54 job postings 1C published in the last 12 months (28%). Counted by Alion from the job postings of 1C, updated Nov 12, 2026.
What programming languages does 1C use?
Python is named in 28% of job postings at 1C, followed by Java (19%), SQL (15%), C++ (11%).
C++ 
What frameworks and libraries does 1C use?
CUDA is named in 4% of job postings at 1C, followed by NCCL (2%), SGLang (2%).
What databases does 1C use?
PostgreSQL is named in 24% of job postings at 1C, followed by MS SQL (17%), Db2 (9%), Redis (4%).
What cloud and platforms does 1C use?
Linux is named in 24% of job postings at 1C, followed by Windows (15%), Grafana (13%), GitLab (6%).
Grafana
7 13%
GitLab
3 6%
GitHub
2 4%
GitLab CI
1 2%
Ubuntu
1 2%
vLLM
1 2%
Show all (11)
What developer tools does 1C use?
Git is named in 20% of job postings at 1C, followed by Docker (17%), Prometheus (15%), Gatling (9%).
Git
11 20%
Docker
9 17%
Prometheus
8 15%
Gatling
5 9%
JMeter
5 9%
Zabbix
5 9%
HAProxy
3 6%
Nginx
3 6%
Show all (15)
Which engineering practices does 1C ask for?
CI/CD is named in 26% of job postings at 1C, followed by AI Agents (4%), KV Cache (2%), RAG (2%).
What does each 1C team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Enterprise Apps
31 postingsQA
6 postingsBackend
4 postingsDevOps
3 postingsHow does your stack fit 1C?
How is the 1C 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 1C stack?
1C scores 73 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How common is the 1C stack in its industry?
Share of the 7,084 companies in the same industries, whose stack Alion knows, that use each technology.
What sets 1C apart
1C products in its job postings
Postings at 1C name its own products. They describe what the company makes, so they are left out of the stack above.
Companies with a stack like 1C
Questions about the 1C tech stack
What programming languages does 1C use?
The languages named in 1C job postings are Python (28%), Java (19%), SQL (15%), C++ (11%), C# (9%), as a share of the 54 postings of the last 12 months.
Does 1C use CUDA?
Yes. CUDA is named in 2 of 54 job postings (4%) and required in 1 of them.
What cloud and platforms does 1C use?
The cloud and platforms named in 1C job postings are Linux (13), Windows (8), Grafana (7) (postings in brackets).
What skills do you need for a Enterprise Apps job at 1C?
Enterprise Apps postings at 1C most often require SQL (7), Git (5), Linux (4), MS SQL (4), out of 31 postings in the last 12 months.
Is the 1C tech stack changing?
Yes. CUDA, Redis first appeared in 1C job postings in the last six months.
How modern is the 1C tech stack?
1C scores 73 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How does Alion know the 1C tech stack?
Alion reads every job posting 1C publishes and tags the technologies each one names. The figures on this page count the 54 postings of the last 12 months and were updated on Nov 12, 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, "1C tech stack: 50 technologies from 54 job postings", as of Nov 12, 2026. https://alion.io/company/1c/technologies