Proton VPN tech stack
Proton VPN builds mostly with Rust, Python, Kotlin, PHP. Its stack also includes Linux, Kubernetes, React.js, MySQL. Rust is named in 28 of the 66 job postings Proton VPN published in the last 12 months (42%). Counted by Alion from the job postings of Proton VPN, updated Sep 28, 2026.
What programming languages does Proton VPN use?
Rust is named in 42% of job postings at Proton VPN, followed by Python (26%), Kotlin (15%), PHP (14%).
Rust
28 42%
Python
17 26%
Kotlin
10 15%
PHP
9 14%
JavaScript
8 12%
SQL
7 11%
TypeScript
6 9%
C++
4 6%
Show all (18)
What frameworks and libraries does Proton VPN use?
React.js is named in 9% of job postings at Proton VPN, followed by Jetpack Compose (8%), Symfony (8%), OpenTelemetry (6%).
React.js
6 9%
Jetpack Compose
5 8%
Symfony
5 8%
OpenTelemetry
4 6%
Pandas
2 3%
Playwright
2 3%
Avalonia
1 2%
Electron
1 2%
Show all (16)
What databases does Proton VPN use?
MySQL is named in 8% of job postings at Proton VPN, followed by Redis (6%), ClickHouse (5%), BigQuery (2%).
MySQL
5 8%
Redis
4 6%
ClickHouse
3 5%
BigQuery
1 2%
CockroachDB
1 2%
ElasticSearch
1 2%
Google BigQuery
1 2%
YugabyteDB
1 2%
Show all (11)
What cloud and platforms does Proton VPN use?
Linux is named in 18% of job postings at Proton VPN, followed by Kubernetes (18%), Grafana (15%), Windows (12%).
Kubernetes
12 18%
Grafana
10 15%
GitLab CI
5 8%
GitLab
4 6%
GitHub
4 6%
Figma
3 5%
Show all (22)
What developer tools does Proton VPN use?
Git is named in 9% of job postings at Proton VPN, followed by Ansible (9%), Prometheus (8%), Terraform (8%).
Git
6 9%
Ansible
6 9%
Prometheus
5 8%
Terraform
5 8%
Puppet
4 6%
ArgoCD
3 5%
Docker
3 5%
Rest API
2 3%
Show all (15)
What AI and ML technologies does Proton VPN use?
LLM is named in 2% of job postings at Proton VPN.
LLM
1 2%
Which engineering practices does Proton VPN ask for?
VPN is named in 100% of job postings at Proton VPN, followed by Offline-First (15%), CI/CD (15%), Configuration Management (6%).
Offline-First
10 15%
CI/CD
10 15%
Anomaly Detection
3 5%
GitOps
3 5%
Show all (24)
What does each Proton VPN 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
6 postingsFrontend
4 postingsHow does your stack fit Proton VPN?
How much does Proton VPN pay by technology?
Median stated pay of the postings that name each technology, against the median of all Proton VPN postings with stated pay: $92k across 26 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Rust | 14 | $121k | +31% |
| Python | 10 | $88k | −4% |
| Kubernetes | 8 | $88k | −4% |
| Linux | 6 | $88k | −5% |
| Kotlin | 5 | $126k | +37% |
| SQL | 5 | $94k | +2% |
| Grafana | 5 | $88k | −4% |
How is the Proton VPN 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 VPN stack?
Proton VPN 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 VPN stack in its industry?
Share of the 68 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Proton VPN apart
Companies with a stack like Proton VPN
Questions about the Proton VPN tech stack
What programming languages does Proton VPN use?
The languages named in Proton VPN job postings are Rust (42%), Python (26%), Kotlin (15%), PHP (14%), JavaScript (12%), as a share of the 66 postings of the last 12 months.
Does Proton VPN use React.js?
Yes. React.js is named in 6 of 66 job postings (9%) and required in 4 of them.
What cloud and platforms does Proton VPN use?
The cloud and platforms named in Proton VPN job postings are Linux (12), Kubernetes (12), Grafana (10) (postings in brackets).
What skills do you need for a Backend job at Proton VPN?
Backend postings at Proton VPN most often require Rust (9), SQL (5), Windows (5), MySQL (4), out of 12 postings in the last 12 months.
Is the Proton VPN tech stack changing?
Yes. Bash, Figma, OpenTelemetry, Platform Engineering first appeared in Proton VPN job postings in the last six months.
How modern is the Proton VPN tech stack?
Proton VPN 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 VPN tech stack?
Alion reads every job posting Proton VPN publishes and tags the technologies each one names. The figures on this page count the 66 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, "Proton VPN tech stack: 107 technologies from 66 job postings", as of Sep 28, 2026. https://alion.io/company/proton-vpn/technologies