Mechanical Integration Engineer Jobs in Tennessee

HII, Mission Technologies has an opportunity available for a Power Systems Integration Engineer located in Knoxville, TN.

The Engineer will be responsible for assembling, integrating, testing, and troubleshooting high‑power Power and Energy Systems (PES) used in modular microgrids and advanced load applications. The role ensures that system designs translate into safe, functional, and production‑ready hardware. Ideal applicants will be comfortable working in a lab, industrial, or high‑bay environments, have a strong troubleshooting mindset and attention to detail, and be able to work with incomplete or evolving requirements.

Level 2 - $66,705 - $95,293

Level 3 - $81,868 - $116,955

Level 4 - $100,697 - $143,853

Level 5 - $123,900 - $177,000

Some of the duties associated with this position include:

• Assemble PES hardware including power converters, energy storage systems, PDUs, contactors, protection devices, and thermal subsystems.
• Integrate rack‑level and containerized systems, ensuring proper mechanical fit, cabling, grounding, and labeling.
• Support MOSA‑aligned architectures to maintain modularity and component interchangeability.
• Coordinate pre‑charge, contactor sequencing, and safe bring‑up of high‑voltage and low‑voltage buses.

• Develop and execute system‑level and component‑level test procedures.
• Configure and operate programmable power supplies, loads, AFEs, and battery emulators.
• Instrument systems to measure voltage, current, power quality, transients, and thermal behavior.
• Conduct FAT, integration testing, fault insertion, and regression testing.
• Verify performance against electrical, thermal, and control requirements.
• Diagnose hardware, wiring, firmware, and controls issues during bring‑up and testing.
• Perform structured root‑cause analysis and implement corrective actions.
• Validate fixes through re‑test and document findings for internal and customer use.

• Create and maintain wiring diagrams, one‑line diagrams, test reports, and as‑built documentation.
• Support configuration management of hardware, firmware, and test setups.
• Provide feedback to design teams to improve manufacturability, testability, and system robustness.

• Follow and enforce high‑voltage and high‑energy electrical safety procedures.
• Support compliance with applicable military, industrial, and laboratory safety standards.
• Participate in hazard analysis and risk‑mitigation activities.

LEVEL 2 - 2 years relevant experience with Bachelors in related field; or 0 years experience with Masters in related field.

LEVEL 3 - 5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; or 0 years experience with PhD or Juris Doctorate in related field.

LEVEL 4 - 9 years relevant experience with Bachelors in related field; 7 years relevant experience with Masters in related field; or 4 years relevant experience with PhD or Juris Doctorate in related field.

LEVEL 5 - 15 years relevant experience with Bachelors in related field; 13 years relevant experience with Masters in related field; or 10 years relevant experience with PhD or Juris Doctorate in related field.

• Experience with high‑power electrical systems (10 kW and above).

Understanding of:

• AC and DC power systems
• Experience with electrical test equipment (DMMs, oscilloscopes, power analyzers, etc.).
• Ability to read and generate schematics, wiring diagrams, and one‑line diagrams.
• Clearance: Ability to obtain and maintain a secret level security clearance.

May require working in an office, industrial, shipboard, or laboratory environment. Capable of climbing ladders and tolerating confined spaces and extreme temperature variances.

The listed salary range for this role is intended as a good faith estimate based on the role's location, expectations, and responsibilities. When extending an offer, HII's Mission Technologies division takes a variety of factors into consideration which include, but are not limited to, the role's function and a candidate's education or training, work experience, and key skills.

Together we are working to ensure a future where everyone can be free and thrive.

All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law.

Do You Need Assistance?

If you need a reasonable accommodation for any part of the employment process, please send an e‑mail to buildyourcareer@hii-co.com and let us know the nature of your request and your contact information. Reasonable accommodations are considered on a case‑by‑case basis. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to from this email address. Additionally, you may also call 1‑844‑849‑8463 for assistance. Press #3 for HII Mission Technologies.