Principal Software Engineer

Principal Software Engineer


Posting Start Date: 6/16/26


Job Location (Short): Tucson, Arizona, USA, 85706


Requisition ID: 32777


Onsite or Remote: Onsite Position


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 that seemed impossible just years ago.

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Job Purpose

At Komatsu, we're solving problems most software engineers will never encounter.


Every day, our software directs fleets of autonomous haul trucks weighing hundreds of tons as they move millions of tons of material across some of the largest and most remote mining operations on Earth.


These are not simulations.
These are not prototypes.
These are production autonomous systems operating 24/7 in harsh, dynamic environments where safety, reliability, and performance matter.


We are looking for a Principal Software Engineer to help shape the future of FrontRunner, the world's leading autonomous haulage platform.


We are not looking for someone who has advised on large systems. We are looking for someone who has personally delivered them.

Travel Requirements

Up to 25%.

Job Duties and Responsibilities

What You'll Do:

• Deliver large, complex software systems that operate in production and create measurable customer value.

• Own outcomes, not just designs, recommendations, or technical direction.

• Drive execution across multiple teams, removing obstacles and creating clarity where complexity and ambiguity exist.

• Raise the technical bar through hands-on leadership, mentorship, and engineering excellence.

Required Skills

• Demonstrated history of delivering large-scale software systems to customers, including ownership from concept through production deployment and operational support.
• 10+ years of professional software engineering experience.
• Strong software design and development experience, including Java and distributed systems.
• Experience mentoring senior engineers and technical leaders.
• Strong communication skills with technical and non-technical stakeholders.
• Ensure the quality and reliability of software through rigorous testing and code reviews.
• Develop and maintain technical documentation to support ongoing development and maintenance.
• Manage project timelines and deliverables, ensuring projects are completed on time and within budget.
• Foster a culture of continuous improvement and technical excellence within the team.

Desired Skills

• Autonomous systems, robotics, or industrial automation.
• Distributed control systems.
• Real-time software systems.
• Networking and distributed application debugging.
• Experience working in operationally critical environments.
• Bachelor's or Master's degree in Computer Science or equivalent experience.

Job Details

Who Thrives Here:

The engineers who succeed in this role are builders, owners, and finishers.


They have delivered complex systems, operated them in production, learned from failures, and continuously improved them.


They care deeply about quality, reliability, and customer outcomes.


Most importantly, they take pride in delivering systems that work in the real world.


Why Komatsu:

This is an opportunity to help define the future of industrial autonomy.


Your work will directly influence autonomous vehicles operating around the world.


You will work at the intersection of software, autonomy, operations, networking, and large-scale industrial systems.


The problems are difficult.


The expectations are high.


The impact is real.


If you've successfully delivered large-scale systems and are looking for a challenge worthy of your experience, we'd like to talk.


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.


If you want to learn more about Komatsu, please visit our website at .

Company Information

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!


EEO Statement

Komatsu is an Equal Opportunity Workplace and an Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.