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The differences between combustion engineers and principal engineers can be seen in a few details. Each job has different responsibilities and duties. It typically takes 4-6 years to become both a combustion engineer and a principal engineer. Additionally, a principal engineer has an average salary of $130,213, which is higher than the $87,464 average annual salary of a combustion engineer.
The top three skills for a combustion engineer include heat transfer, CAD and computational fluid dynamics. The most important skills for a principal engineer are java, architecture, and python.
| Combustion Engineer | Principal Engineer | |
| Yearly salary | $87,464 | $130,213 |
| Hourly rate | $42.05 | $62.60 |
| Growth rate | 2% | 2% |
| Number of jobs | 66,914 | 312,683 |
| Job satisfaction | - | - |
| Most common degree | Bachelor's Degree, 68% | Bachelor's Degree, 66% |
| Average age | 41 | 41 |
| Years of experience | 6 | 6 |
Combustion engineers and principal engineers have different pay scales, as shown below.
| Combustion Engineer | Principal Engineer | |
| Average salary | $87,464 | $130,213 |
| Salary range | Between $61,000 And $123,000 | Between $95,000 And $177,000 |
| Highest paying City | San Francisco, CA | San Mateo, CA |
| Highest paying state | Massachusetts | California |
| Best paying company | Argonne National Laboratory | Grubhub |
| Best paying industry | Technology | Telecommunication |
There are a few differences between a combustion engineer and a principal engineer in terms of educational background:
| Combustion Engineer | Principal Engineer | |
| Most common degree | Bachelor's Degree, 68% | Bachelor's Degree, 66% |
| Most common major | Mechanical Engineering | Electrical Engineering |
| Most common college | Northwestern University | Michigan Technological University |
Here are the differences between combustion engineers' and principal engineers' demographics:
| Combustion Engineer | Principal Engineer | |
| Average age | 41 | 41 |
| Gender ratio | Male, 88.9% Female, 11.1% | Male, 92.6% Female, 7.4% |
| Race ratio | Black or African American, 3.3% Unknown, 4.6% Hispanic or Latino, 9.0% Asian, 12.8% White, 70.2% American Indian and Alaska Native, 0.1% | Black or African American, 3.1% Unknown, 4.5% Hispanic or Latino, 7.8% Asian, 16.6% White, 67.9% American Indian and Alaska Native, 0.1% |
| LGBT Percentage | 5% | 5% |