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Senior iOS Build & Test Infrastructure Engineer

2 weeks, 6 days ago
Finland
Full-time
Senior
iOS Engineer
Mobile Development
Bash CI/CD Git GitHub Actions iOS macOS Python Swift Xcode XCTest
Apply Now
OURA

OURA

Oura Ring: The world's first wellness ring for accurate sleep and activity tracking, empowering users to make optimal daily choices for improved performance and well-being.

Health Care Providers & Services
251-1K
Founded 2013
$159M raised
View All Jobs 51

Description

  • Own and improve iOS build system performance, reliability, and debuggability across local and CI environments.
  • Diagnose and resolve build bottlenecks, non-determinism, and performance regressions.
  • Define and evolve iOS test architecture for unit, integration, and UI tests with a focus on determinism and signal quality.
  • Lead adoption of integration testing frameworks and patterns for iOS at scale.
  • Set standards and policies for flaky tests, including detection, quarantine, remediation, and enforcement.
  • Design and maintain iOS CI execution models, including simulator usage, sharding, and test parallelization.
  • Improve CI runtime, queue time, and failure rates through measurement and iteration.
  • Own and evolve Tuist-based project generation, structure, caching, and related tooling.
  • Improve developer workflows and local–CI parity to reduce “works on my machine” issues.
  • Use metrics, logs, and failure patterns to prioritize work and prevent regressions.

Requirements

  • Strong experience as an iOS engineer with a focus on build systems, test infrastructure, or developer tooling.
  • Deep understanding of Xcode builds, dependency graphs, and build performance optimization.
  • Experience designing or evolving iOS test architectures, including integration or UI testing at scale.
  • Experience operating and improving iOS build and test systems in CI environments.
  • Proven ability to improve local developer build and test loops for iOS engineers.
  • Comfort using CI metrics, logs, and failure patterns to guide debugging and prioritization.
  • Strong root-cause analysis skills and the ability to debug complex, non-deterministic failures.
  • Clear communication skills and the ability to work effectively with iOS engineers, platform teams, and partners.
  • Technical expertise in Xcode build internals, build settings, performance optimization, iOS test frameworks, CI execution models, Tuist, macOS environments, iOS toolchains, scripting and automation (Bash, Swift, Python), and Git workflows.
  • Nice to have: familiarity with developer-facing observability or instrumentation in pre-release environments, experience shaping CI standards beyond a single platform, mentoring experience, or exposure to cross-platform mobile build or test systems.

Benefits

  • Competitive salary.
  • Lunch benefit.
  • Wellness benefit.
  • Flexible working hours and work-life balance.
  • An Oura ring of your own.
  • Easy-to-reach offices in Oulu Teknologiakylä and Helsinki city center.
  • Latest equipment of choice.

Interested in this position?

Apply directly on the company website

Apply Now

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