Sr Mobile Infrastructure Engineer II

Tandem Diabetes Care Europe B.V.; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

Tandem Diabetes Care is seeking a Senior Mobile Infrastructure Engineer II to own the macOS and Linux runner infrastructure and mobile pipelines for iOS and Android apps. You will design and optimize CI workflows, automate build/sign/release processes, and collaborate with mobile engineers to minimize friction in the development lifecycle.

The role emphasizes reliability of FDA-regulated software, ownership of runner health, and reusable tooling across the CI stack. Remote US-only position.

Qualifications

• 8+ years of experience in software engineering, CI/CD, or build/release engineering with ownership of production systems.
• Bachelor's degree in engineering or computer sciences or related field or equivalent combination of education and applicable job experience.
• Proficiency in Python, shell scripting, YAML, and Git.
• Production experience with GitHub Actions, including reusable workflows, matrix strategies, concurrency controls, and composite actions.
• Strong iOS CI expertise including deep familiarity with Xcode build configuration, Apple code signing (certificates, provisioning profiles, entitlements), simulator management, and automated TestFlight or App Store delivery.
• Experience with cloud-hosted or local macOS VM platforms such as Orka/MacStadium, Tart, or equivalent.
• Experience with Apple Developer account management including certificates, provisioning profiles, and App Store Connect API.

Responsibilities

• Own the macOS and Linux runner infrastructure and mobile pipelines.
• Improve build times, queue times, and reliability through GitHub Actions workflows.
• Develop reusable workflows, composite actions, and shared tooling across iOS, Android, and infrastructure repos.
• Write Python and shell scripts for build orchestration, runner management, artifact handling, and secret lifecycle management.
• Monitor runner health, build durations, and failure patterns; own alerts for outages and degraded pipeline states.
• Document systems and maintain runbooks.
• Maintain distribution certificates, provisioning profiles, and export configurations for Apple code signing; automate expiry monitoring and rotation.
• Contribute to Android build and signing workflows, including multi-flavor, multi-variant build pipelines and Firebase App Distribution delivery.
• Support Firebase App Distribution delivery.

Skills

Python

Shell scripting

YAML

Git

GitHub Actions

CI/CD

Build/release engineering

Xcode CI

Education

Bachelor's degree in Engineering or Computer Science

Tools

Orka/MacStadium

Tart

Job description

GROW WITH US:

Tandem Diabetes Care creates new possibilities for people living with diabetes, their loved ones, and their healthcare providers through a positively different experience. We'd love for you to team up with us to \"innovate every day,\" put \"people first,\" and take the \"no-shortcuts\" approach that has propelled us to become a leader in the diabetes technology industry.

STAY AWESOME:

Tandem Diabetes Care is proud to manufacture and sell the Tandem Mobi system and t:slim X2 insulin pump with Control-IQ+ technology - an advanced predictive algorithm that automates insulin delivery. But we're so much more than that. Our company's human-centered approach to design, development, and support delivers innovative products and services for people who use insulin. Because many of our own team members live with diabetes, or have a loved one impacted by diabetes, the work is personal, and we are committed to the cause. Learn more at tandemdiabetes.com

A DAY IN THE LIFE:

The Mobile Infrastructure team at Tandem Diabetes Care exists to keep our mobile engineering teams moving fast and shipping with confidence. We own the CI/CD systems, build automation, macOS runner fleet, and shared tooling that iOS and Android engineers rely on every day to build life-critical medical device software.

We are looking for a Senior Mobile Infrastructure Engineer II to help own our macOS and Linux runner infrastructure and mobile pipelines. This role is central to how we scale CI capacity, maintain runner health, and ship reliable builds for our iOS and Android applications. Working across provisioning automation, cloud-hosted VM platforms, GitHub Actions workflow design, and the Apple toolchain, this role partners closely with mobile engineers to reduce friction throughout the development lifecycle.

The CI systems this role owns directly support the reliability, quality, and delivery of FDA-regulated medical device software used daily by people with diabetes.

A Sr. Mobile Infrastructure Engineer II at Tandem also:

• Manages and evolves the cloud-hosted macOS VM fleet, including provisioning automation, capacity planning, health monitoring, and recovery; ensures runners are reliable, up-to-date, and consistently configured across environments.


• Designs, maintains, and improves build, test, signing, and release workflows for iOS and Android applications; drives improvements in build time, queue time, and flake rates through systematic measurement and iteration.


• Builds reusable workflows, composite actions, and shared tooling consumed across iOS, Android, and infrastructure repositories; establishes consistent, maintainable patterns for CI authoring in GitHub Actions.


• Writes reliable, well-tested Python and shell scripts for build orchestration, runner management, artifact handling, and secret lifecycle management.


• Instruments runner health, build durations, and failure patterns; owns alerting for outages and degraded pipeline states.


• Maintains toolchain version consistency across developer machines and CI environments; documents systems and authors runbooks.


• Maintains distribution certificates, provisioning profiles, and export configurations for Apple code signing; automates expiry monitoring and rotation across all build variants and environments.


• Contributes to Android build and signing workflows, including multi-flavor, multi-variant build pipelines and Firebase App Distribution delivery.

WHEN & WHERE YOU'LL WORK:

Remote: This position is fully remote and open to candidates within the United States. Equipment for the role will be provided and training will occur virtually.

WHAT YOU'LL NEED:

• 8+ years of experience in software engineering, CI/CD, or build/release engineering with meaningful ownership of production systems.


• Bachelor's degree in engineering or computer sciences or related field or equivalent combination of education and applicable job experience.


• Proficiency in Python, shell scripting, YAML, and Git.


• Production experience with GitHub Actions, including reusable workflows, matrix strategies, concurrency controls, and composite actions.


• Strong iOS CI expertise including deep familiarity with Xcode build configuration, Apple code signing (certificates, provisioning profiles, entitlements), simulator management, and automated TestFlight or App Store delivery.


• Experience with cloud-hosted or local macOS VM platforms such as Orka/MacStadium, Tart, or equivalent.


• Experience with Apple Developer account management including certificates, provisioning profiles, and App Store Connect API.

EXTRA AWESOME:

• Experience with Firebase App Distribution for internal mobile build delivery.


• Experience with Android build systems and signing pipelines.


• Experience integrating mobile testing frameworks - unit, instrumented, snapshot, contract, and end-to-end - into CI pipelines.


• Background in iOS or Android mobile development.


• Experience in a regulated industry such as medical devices with traceability and compliance