Mechanical Engineer

We’re ALTEN Technology USA, an engineering company helping clients bring groundbreaking ideas to life—from advancing space exploration and life‑saving medical devices to building autonomous electric vehicles. With 3,000+ experts across North America, we partner with leading companies in aerospace, medical devices, robotics, automotive, commercial vehicles, EVs, rail, and more.

As part of the global ALTEN Group—57,000+ engineers in 30 countries—we deliver across the entire product development cycle, from consulting to full project outsourcing.

When you join ALTEN Technology USA, you’ll collaborate on some of the world’s toughest engineering challenges, supported by mentorship, career growth opportunities, and comprehensive benefits. We take pride in fostering a culture where employees feel valued, supported, and inspired to grow.

The Hagerstown EATS team is looking for an experienced engineer to contribute to the development and advancement of engine aftertreatment hardware systems. This position offers the opportunity to work in a technically demanding, fast‑moving environment while collaborating with engineering teams, suppliers, and other functional organizations.

The position will report to the Group Manager responsible for Aftertreatment Engineering.

• Contribute to the design, development, validation, and production launch of engine aftertreatment hardware in partnership with suppliers and engineering organizations worldwide.
• Develop test plans and conduct EATS system testing, verification, and validation using test rigs, engine test cells, and vehicles.
• Partner with cross‑functional teams, including Engine Engineering, Aftertreatment Engineering, On‑Board Diagnostics Software, and Calibration teams, both locally and internationally.
• Execute engineering test procedures accurately and efficiently while evaluating test results to verify data quality and system performance.
• Prepare and communicate technical findings through clear written documentation and presentations.
• Investigate customer and field issues related to aftertreatment systems and develop effective engineering solutions.
• Develop, release, and implement calibration updates for production and aftermarket applications.
• Travel domestically and internationally as needed to support engineering activities, testing, suppliers, or other business requirements.

This role requires an engineer who is comfortable working across a range of technical activities and contributing effectively within a collaborative engineering organization. Success in this position requires a combination of technical capability, analytical thinking, accountability, and strong interpersonal skills.

We are looking for someone who demonstrates:

• Collaboration: Builds productive relationships across functions and organizations, communicates openly, and contributes toward shared objectives.
• Accountability: Takes ownership of assigned work, follows through on commitments, and accepts responsibility for decisions, actions, and results.
• Analytical Thinking: Interprets technical data, identifies trends and relationships, develops logical conclusions, and uses evidence to recommend appropriate actions.
• Attention to Detail: Maintains high standards for accuracy, follows established processes, and carefully reviews engineering data and results.
• Technical Expertise: Develops and maintains a strong understanding of relevant engineering technologies, processes, and industry practices.

• Bachelor's or Master's degree in Mechanical Engineering, Chemical Engineering, Electrical Engineering, or a closely related engineering discipline.
• Approximately 2–5+ years of relevant engineering experience.
• Practical experience…