Sr Mobile Infrastructure Engineer II

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 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 requirements. Experience running multi-flavor/multi-variant Android builds with regional distribution targets. COMPENSATION & BENEFITS: The starting base pay range for this position is $165,000 to $185,000 annually. Base pay will vary based on job-related knowledge, skills, experience and may also fluctuate depending on candidate’s location and the overall job market. In addition to base pay, Tandem offers a competitive compensation package that includes bonus and a robust benefits package. Tandem offers health care benefits such as medical, dental, vision available your first day, as well as health savings accounts and flexible saving accounts. You’ll also receive 11 paid holidays per year, a minimum of 20 days of paid time off (with accrual starting on day 1) and you will have access to a 401k plan with company match as well as an Employee Stock Purchase plan. Learn more about Tandem’s benefits here ! YOU SHOULD KNOW: Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable state and local Fair Chance laws and regulations. A conditional offer of employment from Tandem is contingent upon successful completion of a pre-employment screening process comprised of a drug test (excluding marijuana) and background check, which includes a review of criminal history information. Tandem has good cause to conduct a review of criminal history information of candidates for this position, as this role may involve access to proprietary, sensitive and/or confidential information, including customer protected health information. This review is required to ensure that individuals in such roles uphold high standards of trust and integrity so as to protect the interests of our customers, employees, and stakeholders. SPONSORSHIP: Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa at this time. WHY YOU’LL LOVE WORKING HERE: At Tandem, we believe joy fuels excellence. That's why we've built a workplace that celebrates your achievements and supports your well-being. Our team thrives on pushing boundaries and fostering growth, all while maintaining a spirit of fun and camaraderie. This is just one of the ways we stay awesome! Explore the benefits and reasons to love Tandem at . BE YOU, WITH US! We embrace the value that every single one of us brings to the table. But sometimes we forget that when we don’t meet 100% of a job description’s criteria – maybe you’re feeling that way right now? We encourage you to apply anyway. Because we want you to be you, with us. Tandem is firmly committed to being an equal opportunity employer and does not discriminate on the basis of age, disability, sex, race, religion or belief, gender identity or expression, marriage/civil partnership, pregnancy/maternity, or sexual orientation. We are an inclusive organization, and we welcome applications from a wide range of candidates. Selection for roles will be based on individual merit alone. REFERRALS: We love a good referral! If you know someone who would be a great fit for this position, please share! APPLICATION DEADLINE: The position will be posted until a final candidate is selected for the requisition or the requisition has a sufficient number of applications. Make a move that matters. Join Tandem Diabetes Care, where we're turning challenges into triumphs every day and where your talents will help shape a healthier, happier tomorrow. #LI-Remote #LI-BC1