Mechanical Engineer – Autonomous Energetics Systems

AT Process Technologies; Waltham (MA); On-site; USD 110,000 - 140,000; Full time

Job summary

AT Process Technologies (ATP) is building a core team of engineers to deliver an autonomous skidded system for next-generation energetics manufacturing. You will own a subsystem from concept through commissioning, collaborating with R&D teams to design, test, and validate hardware.

The ideal candidate has 5+ years in hardware design, hands-on end-to-end ownership, and strong CAD skills with NX or Fusion 360, ready to work on-site in Massachusetts.

Qualifications

• Bachelor's degree in Mechanical Engineering, Chemical Engineering, Robotics, Mechatronics, or related discipline.
• 5+ years of hardware design and development experience.
• Proficiency in 3D CAD tools (Siemens NX or Fusion 360).
• Experience owning hands-on, end-to-end hardware development efforts (industry projects, design-build-fly, robotics, or similar).

Responsibilities

• Own the mechanical design and development of subsystem-level hardware from concept through pilot testing and production.
• Design and fabricate reactors and other continuous process systems.
• Work with a team of mechanical and process engineers to design, build, test, and commission hardware.
• Collaborate with automation and controls engineers on integrated system development.
• Lead hands-on testing, hardware iteration, and rapid prototyping based on performance feedback.
• Drive manufacturability, part selection, and tolerance stack-up decisions for scalable production.
• Conduct engineering analysis including stress, thermal, and fluid modeling; perform DFx reviews.
• Evaluate vendors, lead design reviews, and validate compliance and performance.
• Contribute to test plans, technical documentation, and engineering reviews.

Skills

3D CAD tools

Mechanical fundamentals

End-to-end hardware development

Python/C++ basics

Team collaboration

Education

Bachelor's degree in Mechanical Engineering or related

Tools

Siemens NX

Fusion 360

Job description

AT Process Technologies (ATP) is building a core team of engineers to deliver an autonomous skidded system for next-generation energetics manufacturing. You will own a subsystem from concept through commissioning, collaborating with R&D teams to design, test, and validate hardware.

The ideal candidate has 5+ years in hardware design, hands-on end-to-end ownership, and strong CAD skills with NX or Fusion 360, ready to work on-site in Massachusetts.