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The differences between senior software engineers and principal software engineers can be seen in a few details. Each job has different responsibilities and duties. It typically takes 2-4 years to become both a senior software engineer and a principal software engineer. Additionally, a principal software engineer has an average salary of $134,230, which is higher than the $114,494 average annual salary of a senior software engineer.
The top three skills for a senior software engineer include java, python and javascript. The most important skills for a principal software engineer are java, python, and software development.
| Senior Software Engineer | Principal Software Engineer | |
| Yearly salary | $114,494 | $134,230 |
| Hourly rate | $55.05 | $64.53 |
| Growth rate | 21% | 21% |
| Number of jobs | 338,989 | 345,893 |
| Job satisfaction | 3 | - |
| Most common degree | Bachelor's Degree, 69% | Bachelor's Degree, 69% |
| Average age | 39 | 39 |
| Years of experience | 4 | 4 |
Senior software engineers are experienced employees who would usually take the lead in projects related to software development. They are in charge of determining the needs of the organization, checking whether there are feasible solutions to challenges, and creating plans for the development of a software solution. They provide a sound analysis of data collected during the testing phase of the software and address any problems during the software development phase. Once the software has been developed, they then ensure that it works well and that it addresses the needs and expectations of the users.
A Principal Software Engineer is responsible for the technical aspects of an organization's projects. They diagnose, document, and troubleshoot systems to resolve problems identified through testing, as well as implement strategies to improve integration and efficiency.
Senior software engineers and principal software engineers have different pay scales, as shown below.
| Senior Software Engineer | Principal Software Engineer | |
| Average salary | $114,494 | $134,230 |
| Salary range | Between $86,000 And $151,000 | Between $98,000 And $182,000 |
| Highest paying City | San Francisco, CA | Seattle, WA |
| Highest paying state | California | Hawaii |
| Best paying company | The Citadel | |
| Best paying industry | Retail | Retail |
There are a few differences between a senior software engineer and a principal software engineer in terms of educational background:
| Senior Software Engineer | Principal Software Engineer | |
| Most common degree | Bachelor's Degree, 69% | Bachelor's Degree, 69% |
| Most common major | Computer Science | Computer Science |
| Most common college | Massachusetts Institute of Technology | California State University - Long Beach |
Here are the differences between senior software engineers' and principal software engineers' demographics:
| Senior Software Engineer | Principal Software Engineer | |
| Average age | 39 | 39 |
| Gender ratio | Male, 81.4% Female, 18.6% | Male, 87.5% Female, 12.5% |
| Race ratio | Black or African American, 4.6% Unknown, 4.8% Hispanic or Latino, 8.4% Asian, 31.8% White, 50.2% American Indian and Alaska Native, 0.2% | Black or African American, 4.4% Unknown, 4.8% Hispanic or Latino, 8.2% Asian, 29.9% White, 52.5% American Indian and Alaska Native, 0.2% |
| LGBT Percentage | 8% | 8% |