Proton tech stack
Proton builds mostly with Rust, Python, Kotlin, SQL. Its stack also includes Linux, Kubernetes, React.js, MySQL. Rust is named in 28 of the 76 job postings Proton published in the last 12 months (37%). Counted by Alion from the job postings of Proton, updated Nov 6, 2026.
What programming languages does Proton use?
Rust is named in 37% of job postings at Proton, followed by Python (25%), Kotlin (13%), SQL (12%).
Rust
28 37%
Python
19 25%
Kotlin
10 13%
SQL
9 12%
PHP
9 12%
JavaScript
8 11%
TypeScript
6 8%
C++
4 5%
Show all (17)
What frameworks and libraries does Proton use?
React.js is named in 8% of job postings at Proton, followed by Jetpack Compose (7%), Symfony (7%), OpenTelemetry (5%).
React.js
6 8%
Jetpack Compose
5 7%
Symfony
5 7%
OpenTelemetry
4 5%
Pandas
2 3%
Playwright
2 3%
Avalonia
1 1%
Electron
1 1%
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What databases does Proton use?
MySQL is named in 7% of job postings at Proton, followed by Redis (5%), ClickHouse (4%), CockroachDB (1%).
MySQL
5 7%
Redis
4 5%
ClickHouse
3 4%
CockroachDB
1 1%
ElasticSearch
1 1%
Google BigQuery
1 1%
PostgreSQL
1 1%
YugabyteDB
1 1%
Show all (11)
What cloud and platforms does Proton use?
Linux is named in 20% of job postings at Proton, followed by Kubernetes (17%), Grafana (14%), Windows (9%).
Kubernetes
13 17%
Grafana
11 14%
GitLab CI
5 7%
Figma
4 5%
GitLab
4 5%
GitHub
4 5%
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What developer tools does Proton use?
Ansible is named in 9% of job postings at Proton, followed by Prometheus (8%), Git (8%), Terraform (8%).
Ansible
7 9%
Prometheus
6 8%
Git
6 8%
Terraform
6 8%
Puppet
5 7%
Rest API
4 5%
ArgoCD
3 4%
Docker
3 4%
Show all (18)
Which engineering practices does Proton ask for?
VPN is named in 100% of job postings at Proton, followed by Offline-First (13%), CI/CD (13%), Configuration Management (5%).
Offline-First
10 13%
CI/CD
10 13%
AI Agents
3 4%
Anomaly Detection
3 4%
GitOps
3 4%
Show all (25)
What does each Proton team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
12 postingsMobile
11 postingsDevOps
8 postingsHow does your stack fit Proton?
How much does Proton pay by technology?
Median stated pay of the postings that name each technology, against the median of all Proton postings with stated pay: $90k across 32 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Rust | 14 | $118k | +31% |
| Python | 12 | $86k | −4% |
| Linux | 8 | $86k | −4% |
| Kubernetes | 8 | $86k | −4% |
| SQL | 7 | $90k | 0% |
| Grafana | 6 | $92k | +2% |
| Kotlin | 5 | $124k | +37% |
How is the Proton 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 Proton stack?
Proton scores 74 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 Proton stack in its industry?
Share of the 124 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Proton
Questions about the Proton tech stack
What programming languages does Proton use?
The languages named in Proton job postings are Rust (37%), Python (25%), Kotlin (13%), SQL (12%), PHP (12%), as a share of the 76 postings of the last 12 months.
Does Proton use React.js?
Yes. React.js is named in 6 of 76 job postings (8%) and required in 4 of them.
What cloud and platforms does Proton use?
The cloud and platforms named in Proton job postings are Linux (15), Kubernetes (13), Grafana (11) (postings in brackets).
What skills do you need for a Backend job at Proton?
Backend postings at Proton most often require Rust (9), SQL (5), Windows (5), MySQL (4), out of 12 postings in the last 12 months.
Is the Proton tech stack changing?
Yes. Figma, A/B Testing, OpenTelemetry, Platform Engineering first appeared in Proton job postings in the last six months.
How modern is the Proton tech stack?
Proton scores 74 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 Proton tech stack?
Alion reads every job posting Proton publishes and tags the technologies each one names. The figures on this page count the 76 postings of the last 12 months and were updated on Nov 6, 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, "Proton tech stack: 111 technologies from 76 job postings", as of Nov 6, 2026. https://alion.io/company/proton/technologies