Senior Mobile CI & Build Systems Engineer

TL;DR

Senior Mobile CI & Build Systems Engineer (Mobile Infrastructure): Owning and evolving mobile CI, build, test, and developer-facing observability systems end-to-end for iOS and Android applications. Focus on improving CI performance and reliability, optimizing build systems (Gradle, Xcode), defining test architecture for determinism, and ensuring scalable test execution.

Location: Hybrid in Helsinki, Finland

Company

hirify.global is a quickly growing company offering award-winning products like the Oura Ring to empower people to improve their health through daily insights.

What you will do

• Design, maintain, and continuously improve PR and merge CI and release pipelines for iOS and Android applications.
• Design and manage CI runner fleets, including capacity planning, utilization, and reliability.
• Act as a deep technical owner for mobile build systems (Gradle, Xcode/Tuist) to improve performance and determinism.
• Define and evolve test architecture for unit, integration, and UI tests with a strong focus on determinism and signal quality.
• Own developer-facing observability practices for mobile apps, including logging, metrics, and tracing for pre-release workflows.
• Design end-to-end feedback loops that connect build results, test outcomes, and app-level telemetry into a clear, actionable developer experience.

Requirements

• Significant experience (typically 8+ years) in software engineering, CI/CD, or build systems, with meaningful ownership of production systems.
• Experience operating CI, build, or test systems used across multiple teams or a large codebase.
• A systems-first mindset and a track record of improving reliability, performance, and developer productivity at scale.
• Experience supporting high-velocity mobile development teams.
• Comfort reasoning about distributed systems, shared infrastructure, and capacity-related failure modes.
• Experience partnering with infrastructure or backend teams to operate shared systems reliably.
• Location: Hybrid in Helsinki, Finland

Nice to have

• Mobile development background (iOS, Android, or both).
• Hands-on experience working with cloud infrastructure beyond CI execution (e.g., deeper AWS ownership).
• Experience mentoring engineers or leading cross-team technical initiatives.

Culture & Benefits

• Competitive Salary.
• Lunch and wellness benefits.
• Flexible working hours and work-life balance.
• Collaborative, smart teammates.
• An Oura ring of your own.
• Easy-to-reach offices in Oulu and Helsinki city center.
• Latest equipment of choice.