Senior Assembly Process Engineer III — Lead & Optimize

Thomas Built Buses, Inc.

Portland, Northern (OR, KY)

Hybrid

USD 104,000 - 133,000

Full time

4 days ago

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Benefits offered by this job

Annual bonus program

401k company match up to 6%

4 weeks paid vacation

13+ calendar holidays

8 weeks paid parental leave

Employee assistance program

Comprehensive healthcare plans andWell

Onsite fitness

Tuition assistance and volunteer paid

Short-term and long-term disability

Job summary

Thomas Built Buses, Inc. is seeking an experienced Manufacturing Assembly Process Engineer III to lead and mentor—driving complex assembly initiatives across locations while balancing safety, quality, cost, and schedule.

You will coach engineers, manage multiple projects, and deliver actionable improvements in a fast-paced environment. The ideal candidate complements hands-on shop-floor problem solving with strategic planning, supports standardization and Lean practices, and partners with

Qualifications

Bachelor's degree in Manufacturing Engineering, Mechanical Engineering or related technical field and 5-7 years of relevant experience required.
5-7 years of experience in manufacturing engineering, assembly engineering, industrial engineering, or related disciplines.
At least 2 years of experience leading projects involving multiple stakeholders.
At least 2 years of experience supporting manufacturing launches, process improvements, or capital projects.
Advanced proficiency in Microsoft Excel, including data analysis, reporting, formulas, pivot tables, and dashboard development.
Proficiency in Microsoft PowerPoint with the ability to create professional presentations, organize complex information, and deliver clear, effective messaging to leadership and cross‑functional teams.
Strong communication and organizational skills.
Ability to travel approximately 25%, including visits to manufacturing facilities, suppliers, and project locations as needed.
Ability to read, interpret, and apply engineering drawings, GD&T, assembly layouts, and manufacturing documentation.
Experience developing or reviewing manufacturing layouts, tooling concepts, workstation designs, or assembly process flows.
Knowledge of PFMEA, Control Plans, Process Flow Diagrams, and other manufacturing quality tools.
Experience with Lean Manufacturing, continuous improvement, and problem‑solving methodologies.
Experience with CAD software such as AutoCAD, CATIA, SolidWorks, or similar design tools.
Experience mentoring engineers or leading technical teams.
Spanish language proficiency (written and verbal) is a plus.

Responsibilities

Lead the development, implementation, and continuous improvement of assembly manufacturing processes.
Provide technical guidance and mentorship to Manufacturing Engineers across multiple locations.
Support safety‑critical manufacturing systems, tooling, assembly processes, and controls.
Drive root cause analysis and implementation of corrective actions for manufacturing issues.
Ensure process designs meet safety, quality, productivity, and ergonomic requirements.
Lead multiple projects simultaneously from concept through implementation.
Manage schedules, risks, budgets, resource requirements, and stakeholder alignment.
Partner with Design Engineering, Operations, Quality, Supply Chain, Logistics, and Plant teams to ensure successful project execution.
Identify project risks early and develop mitigation plans to maintain timing and deliverables.
Drive accountability and execution across cross‑functional teams.
Serve as a coach and mentor to engineers by providing guidance on technical problem-solving, project execution, communication, and professional development.
Help develop engineering talent and support career growth.