Reliability Engineer Manager Jobs in Tucson, AZ (NOW HIRING)

Requisition ID36532-Posted08/03/2026

Shape the Future of Mining with Komatsu Mining Technology Solutions: At Komatsu Mining Technology Solutions, we're not just talking about progress and innovation - we're making it happen. Our cutting-edge Modular brand solutions are powering mines worldwide, driving efficiency and sustainability in ways thatseemed impossible just years ago.

The Senior Infrastructure Engineer – DevOps & Site Reliability Engineering is responsible for the architecture, implementation, and reliability of Komatsu’s mission-critical infrastructure supporting the Autonomous Haulage System (AHS) and other mining technology solutions. This role ensures the scalability, observability, and resilience of infrastructure both in development and in globally deployed production environments.

Working cross-functionally with software engineering, security, IT, and field operations, the Senior Infrastructure Engineer designs and automates infrastructure systems to maximize reliability and performance. They will also mentor peers, establish best practices, and drive continuous improvement of infrastructure platforms that support 24/7 mine operations worldwide

• Serve as a technical leader and subject matter expert across multiple infrastructure and DevOps domains.
• Develop and optimize automated CI/CD pipelines to support agile development and fast, reliable deployments.
• Architect and maintain on-premise virtual environments, including provisioning, monitoring, and capacity planning.
• Design and implement secure, scalable, and resilient infrastructure solutions using Infrastructure as Code (IaC) principles (e.g., Terraform, Ansible, Packer).
• Implement observability frameworks for end-to-end system visibility, integrating metrics, tracing, and logging (e.g., Prometheus, Grafana, ELK, OpenTelemetry).
• Define and monitor Site Reliability Engineering (SRE) metrics, including Service Level Indicators (SLIs), Service Level Objectives (SLOs), and error budgets to guide operational improvements.
• Lead incident response and root cause analysis for production and field systems, ensuring lessons learned are implemented and systems are hardened.
• Partner with field engineers and support teams to ensure robust infrastructure at customer mine sites, helping to maintain 24/7 high availability and reliability.
• Continuously improve infrastructure in field-deployed environments by applying automation, repeatability, and security best practices.
• You will assist in the career development of others, actively mentoring individuals and the team on advanced technical issues and help managers guide the career growth of their team members
• You will balance technical leadership and savvy with strong business judgment to make the right decisions about technology choices.
• You will be able to occasionally travel international

• 7+ years of experience in Infrastructure Engineering, DevOps, or SRE roles, with a track record of leading major initiatives.
• Experience building and maintaining CI/CD pipelines using GitHub, Jenkins, GitLab CI, or similar tools.
• Proven experience managing on-premise and hybrid cloud infrastructure, including hypervisors (VMware, KVM).
• Deep understanding of networking, system security, and Linux-based systems.
• Familiarity with SRE disciplines including SLIs, SLOs, incident management, and error budgets. Experience with observability and monitoring platforms (e.g., Prometheus, Grafana, ELK, Datadog).
• Strong background supporting field-deployed infrastructure and maintaining mission-critical systems with high uptime.
• Experience as a mentor, tech lead or leading an engineering team
• Bachelor's or Master’s degree in Computer Science, Engineering, or equivalent experience.

Diversity & Inclusion Commitment

At Komatsu we come from diverse backgrounds, with unique perspectives, experiences, and contributions.We are committed to creating a workforce that is reflective of the communities we work and live in. We believe that our people are part of our shared purpose.We are authentic, ambitious, and innovative in our pursuit of Diversity & Inclusion. United, we are on a journey towards a sustainable future that creates value together.

Komatsu is a world leader in manufacturing construction, mining, forestry, and industrial heavy equipment. Founded in 1921, Komatsu has a long history of quality, reliability, innovation, and excellence. Headquartered in Tokyo, Japan, Komatsu facilities, distributors and dealers are in more than 140 countries and employ more than 60,000 people. Komatsu offers a diverse and challenging work environment, where you can grow your skills and career, and contribute to a sustainable, clean-energy future. If you are looking for a company that values your talent and potential, be a part of something big and join a team that is shaping the world!

Komapu is an Equal Opportunity Workplace and an Aff