Staff Software Engineer: Test Automation & Reliability

One Identity; United Kingdom; On-site; GBP 110,000 - 140,000; Full time

Job summary

One Identity's OneLogin team is seeking Staff Software Engineers who own their work, exercise strong technical judgment, and act with a bias for action. These roles expect engineers to identify and solve problems proactively, not merely execute tasks, and to operate as T-shaped engineers across backend, APIs, cloud, and operations.

This hands-on role includes on-call responsibilities and a focus on modern engineering practices, including AI-augmented development.

Qualifications

• 4+ years of professional software engineering experience with ownership of features, quality, or system-level initiatives.
• Strong backend development experience (Ruby, Node.js, or similar).
• Solid understanding of REST APIs, service contracts, and software design principles.
• Experience working across backend services, APIs, and production systems.
• Experience designing and maintaining automated tests across unit, integration, and end-to-end levels.
• Familiarity with modern testing frameworks (Playwright, Cypress).
• Strong ownership of code quality, debugging, and testing strategy, balancing coverage, reliability, and execution time.
• Experience building and operating services in AWS or similar cloud environments.
• Good understanding of cloud-native and distributed systems (microservices, scalability, resilience).
• Experience with CI/CD, production debugging, observability tools, and incident response.
• Willingness to participate in a mandatory 24/7 on-call rotation.
• Experience responding to production incidents and contributing to reliability improvements.

Responsibilities

• Design and evolve test architecture and tooling that scales across services and teams.
• Design and implement end-to-end, integration, and API test automation.
• Own test strategy across services - determine what to test, where to test it, and how to maximize signal while minimizing runtime.
• Improve CI/CD confidence and release safety while increasing deployment velocity.
• Reduce regression risk through targeted, high-value test coverage rather than brute-force test expansion.
• Own test reliability - proactively detect, diagnose, and eliminate flaky or low-signal tests.

Skills

Software Engineering

Backend Development

REST APIs

AWS / Cloud

CI/CD

Tools

Playwright

Cypress

AWS

Job description

One Identity's OneLogin team is seeking Staff Software Engineers who own their work, exercise strong technical judgment, and act with a bias for action. These roles expect engineers to identify and solve problems proactively, not merely execute tasks, and to operate as T-shaped engineers across backend, APIs, cloud, and operations.

This hands-on role includes on-call responsibilities and a focus on modern engineering practices, including AI-augmented development.