OTR tech stack
OTR builds mostly with SQL, Java, 1C, Python. Its stack also includes PostgreSQL, Apache Kafka, GitLab, ClickHouse. PostgreSQL is named in 7 of the 12 job postings OTR published in the last 12 months (58%). Counted by Alion from the job postings of OTR, updated Oct 1, 2026.
What programming languages does OTR use?
SQL is named in 42% of job postings at OTR, followed by Java (33%), 1C (25%), Python (8%).
1C 
What frameworks and libraries does OTR use?
JUnit is named in 8% of job postings at OTR, followed by Spring Boot (8%), JOOQ (8%).
What databases does OTR use?
PostgreSQL is named in 58% of job postings at OTR, followed by ClickHouse (25%), Oracle (25%), Redis (25%).
What cloud and platforms does OTR use?
Apache Kafka is named in 33% of job postings at OTR, followed by GitLab (25%), Grafana (25%), Kubernetes (25%).
Apache Kafka
4 33%
GitLab
3 25%
Grafana
3 25%
Kubernetes
3 25%
Airflow
1 8%
Bitbucket
1 8%
Figma
1 8%
Show all (12)
What developer tools does OTR use?
Docker is named in 33% of job postings at OTR, followed by Ansible (25%), Apache NiFi (25%), Helm (25%).
Docker
4 33%
Ansible
3 25%
Helm
3 25%
Nginx
3 25%
Prometheus
3 25%
containerd
3 25%
etcd
3 25%
Show all (13)
Which engineering practices does OTR ask for?
CI/CD is named in 25% of job postings at OTR, followed by ETL/ELT (25%), DNS (25%), SLI/SLO/SLA (17%).
What does each OTR team work with?
The technologies each team's postings require most often, with the number of postings that require them.
DevOps
4 postingsHow does your stack fit OTR?
How modern is the OTR stack?
OTR scores 70 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: 0; legacy ones: 0.
How common is the OTR stack in its industry?
Share of the 1,412 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like OTR
Questions about the OTR tech stack
What programming languages does OTR use?
The languages named in OTR job postings are SQL (42%), Java (33%), 1C (25%), Python (8%), as a share of the 12 postings of the last 12 months.
Does OTR use Apache Kafka?
Yes. Apache Kafka is named in 4 of 12 job postings (33%) and required in 3 of them.
What cloud and platforms does OTR use?
The cloud and platforms named in OTR job postings are Apache Kafka (4), GitLab (3), Grafana (3) (postings in brackets).
What skills do you need for a DevOps job at OTR?
DevOps postings at OTR most often require PostgreSQL (4), Ansible (3), Apache Kafka (3), Apache NiFi (3), out of 4 postings in the last 12 months.
Is the OTR tech stack changing?
No new technology has appeared in OTR job postings in the last six months.
How modern is the OTR tech stack?
OTR scores 70 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: 0; legacy ones: 0.
How does Alion know the OTR tech stack?
Alion reads every job posting OTR publishes and tags the technologies each one names. The figures on this page count the 12 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, "OTR tech stack: 42 technologies from 12 job postings", as of Oct 1, 2026. https://alion.io/company/otr/technologies