Toolmill Briefswhat companies are building, read from their hiring

Company brief · updated 2026-10-18

Proton

proton.me · software industry · Over 100 million people use Proton to stay private and secure online. Get a free Proton account and take back your privacy.

32open roles
2new in 30 days
24closed in 30 days
0remote-eligible
steadyhiring velocity

What they're building

Android engineering across four cities strong signal

Today: Proton's Android apps, which the postings say cover Mail, Calendar, Drive, Pass, Account, Lumo and Meet

Roles: Senior Android Software Engineer - Paris · Senior Android Software Engineer - Geneva · Senior Android Software Engineer - Barcelona · Senior Android Software Engineer - London · Senior Android Engineer (Pass)

Requirements mention: Kotlin · Jetpack Compose · Rust logical core · mentoring engineers · performance, concurrency, multithreading, and mobile memory management · end-to-end ownership of features

Inference: Proton is adding senior Android capacity in Paris, Geneva, Barcelona and London at once, across the Drive and Identity Manager engineering departments. All four city postings opened on 2026-07-20 and share a Kotlin, Jetpack Compose and shared Rust core stack.

Drive SDKs and desktop clients strong signal

Today: Proton Drive, described on the site as end-to-end encrypted cloud storage

Roles: Senior Rust Engineer - Proton Drive · Senior Foundation Engineer (Drive) · Senior .NET Developer (Desktop/SDK) · Software Engineer (Linux)

Requirements mention: Proton Drive SDKs · sync SDK · Proton Drive Linux desktop client · file synchronization engine · cross-platform compatibility · Linux packaging and distribution

Inference: Drive is consolidating its clients on shared SDKs (Rust, C#, TypeScript), with a greenfield native Linux desktop client described as the first public example built on the Proton Drive SDK.

B2B capabilities for Proton VPN and Mail/Calendar moderate signal

Today: Protect your business with easy-to-use encrypted solutions (proton.me site heading)

Roles: Senior Product Manager B2B (VPN) · Senior Product Manager (Inbox) - B2B · Frontend Engineer (B2B Products)

Requirements mention: B2B SaaS · network segmentation · firewall service · device posture · B2B-specific health metrics · SSO · directory sync · B2B product experience

Inference: the postings point to business-tier features for VPN and Mail, covering admin controls, network segmentation and a firewall service, with device posture described as planned for high-profile customers.

Storage and data center capacity strong signal

Today: Store, share, collaborate. Securely. (proton.me site heading), with Proton Drive described as end-to-end encrypted cloud storage

Roles: Site Reliability Engineer - Storage · Software Engineer - Back-End (Storage) · Data Center Engineer

Requirements mention: Storage infrastructure · Ceph · Seaweed · Tape · Experience racking and cabling servers · on-call

Inference: storage runs on-premise across multiple data centers, and the Data Center Engineer posting describes the private cloud as doubling every year, so capacity work is likely to continue.

Machine learning for spam, abuse and security operations moderate signal

Today: Spam defence in Proton Mail ('Defeat spam, tracking, and ads' on the site) and account security systems named in the postings (Proton Sentinel, Proton CAPTCHA)

Roles: Senior Machine Learning Engineer (SOC) · Machine Learning Engineer · Spam and Abuse Analyst (MSA) · Fullstack Software Engineer (Autonomous systems)

Requirements mention: unsupervised anomaly detection · graph-based threat correlation · LLMs · real-time inference · Proton Sentinel · Proton CAPTCHA

Inference: machine learning work sits in security operations and in the mail delivery and anti-abuse teams, and the two ML postings both name LLMs.

Proton Meet video calls weak signal

Today: Host and join confidential meetings (proton.me site heading). The postings describe Meet as free encrypted video calls, launched in March 2026.

Roles: Site Reliability Engineer (Meet) · Frontend Engineer (Meet)

Requirements mention: WebRTC · real-time streaming · Messaging Layer Security

No inference drawn at this strength.

Where the headcount is going

DepartmentOpen
CC - Product Design3
CC - Sales3
CC - Engineering - VPN3
CC - Engineering Meet2
CC - Product - Inbox2
CC - Infrastructure - Developer tooling2
CC - Infrastructure - Storage2
CC - Anti-Abuse2
CC - Engineering Neutron2
CC - Product - VPN1
CC - Infrastructure - Network1
CC - Infrastructure - Platform SRE1

Of 55 open roles, the largest concentrations are CC - Engineering - VPN (6) and CC - Engineering Drive (6), followed by Infrastructure teams with 8 roles across five sub-departments and CC - Product Design (4), so hiring is weighted toward VPN, Drive and the self-run infrastructure beneath them.

Who they need

Seniority: 36 of 55 roles are senior, with 7 mid, 5 manager, 1 director, 1 VP, 1 intern and 4 unspecified.

Skills named most: Rust, Kotlin, Python, Kubernetes, Linux, Terraform, Ansible, Grafana, Prometheus, Go, TypeScript, React

Locations: Roles are listed against city locations, mainly Geneva, Paris, London, Barcelona and Taipei, with some in Vilnius, Skopje and Zurich. Several list two or three cities. Only one role is marked remote: Senior Community Manager, listed as USA (remote).

How to use this

If you're applying: Check your city first: only one role is marked remote, and the rest are listed against specific cities. For Android, the postings ask for Kotlin, Jetpack Compose and Rust, so test those before applying. Rust also runs through the Drive SDK and desktop roles. Two Neutron roles (Senior Engineering Manager, Senior Product Manager) describe an upcoming 'privacy-first community experience' and list atproto.

If you're selling or recruiting: Android hiring is four separate city postings, opened the same day, in two departments (Drive and Identity Manager), so expect more than one hiring manager. Storage and data center roles describe on-premise, multi-data-center infrastructure. The B2B product roles point to business-tier features for VPN and Mail. The Neutron roles signal a new product that is not yet on the site.

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Open roles (32)

TitleDepartmentLocationPosted
Senior Product Designer - (VPN)CC - Product DesignGeneva, Barcelona2026-10-06
Site Reliability Engineer (Meet)CC - Engineering MeetTaipei2026-10-02
Senior Product Manager (Inbox) - B2BCC - Product - InboxLondon; Paris2026-09-09
Senior Product Manager B2B (VPN)CC - Product - VPNBarcelona; London; Geneva2026-08-27
Senior DevOps Engineer - Platform CC - Infrastructure - Developer toolingParis;Geneva;Barcelona2026-08-17
Site Reliability Engineer - StorageCC - Infrastructure - StorageGeneva, Switzerland, Paris, France2026-08-14
Senior Product Designer (Drive)CC - Product DesignLondon, Geneva2026-08-06
Head of Product (Mail)CC - Product - InboxLondon; Paris; Geneva2026-07-30
Spam and Abuse Analyst (MSA)CC - Anti-AbuseTaipei2026-07-27
Senior Engineering Manager CC - Engineering NeutronGeneva, Switzerland, Paris, France2026-07-23
Network Reliability Engineer CC - Infrastructure - NetworkGeneva;Paris2026-07-15
Senior Product Designer - Growth (Inbox)CC - Product DesignParis, London2026-07-07
Site Reliability Engineer - ObservabilityCC - Infrastructure - Platform SREGeneva; Paris2026-06-15
Senior Product ManagerCC - Engineering NeutronGeneva, Switzerland, Paris, France2026-05-18
Business Development ManagerCC - SalesGeneva2026-05-15
Account ManagerCC - SalesParis2026-05-15
Frontend Engineer (Meet)CC - Engineering MeetTaipei2026-05-04
Site Reliability Engineer - Infrastructure SystemsCC - Infrastructure - ServiceGeneva; Paris 2026-04-23
Software Engineer (Linux)CC - Engineering - VPNLondon UK, Geneva CH 2026-04-09
Senior DevOps Engineer CC - Infrastructure - Developer toolingParis;Geneva;Barcelona2026-03-30
Machine Learning EngineerCC - Mail Delivery and SpamGeneva; Taipei2026-03-26
Inbound Sales Development Representative - German SpeakerCC - SalesBarcelona2026-03-18
Frontend Engineer (B2B Products)CC - Engineering - B2BTaipei; Geneva; Skopje2026-03-18
Senior Product Manager (Pass)CC - PaymentsBarcelona; Paris2026-03-13
Software Engineer, Windows (VPN)CC - Engineering - VPNBarcelona; Geneva; 2026-01-27
Senior Software Engineer (Inbox Desktop)CC - Engineering - InboxLondon; Geneva2026-01-26
Customer Support Advisor CC - Customer SupportSkopje2025-12-11
Data Center Engineer CC - Infrastructure - StorageZurich; 2025-08-12
Senior .NET Developer (Desktop/SDK)CC - Engineering DriveGeneva; London2025-08-11
Senior Systems & Reliability Engineer (VPN)CC - Engineering - VPNBarcelona; Geneva2025-05-14
Head of GrowthCC - Growth - InboxLondon, Paris, Geneva2025-03-11
Fullstack Software Engineer (Autonomous systems)CC - Anti-AbuseGeneva; Taipei; Skopje2024-09-13