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The differences between interface developers and contract developers can be seen in a few details. Each job has different responsibilities and duties. It typically takes 2-4 years to become both an interface developer and a contract developer. Additionally, an interface developer has an average salary of $103,286, which is higher than the $91,433 average annual salary of a contract developer.
The top three skills for an interface developer include HL7, java and XML. The most important skills for a contract developer are C++, javascript, and java.
| Interface Developer | Contract Developer | |
| Yearly salary | $103,286 | $91,433 |
| Hourly rate | $49.66 | $43.96 |
| Growth rate | 21% | 21% |
| Number of jobs | 101,096 | 249,808 |
| Job satisfaction | - | - |
| Most common degree | Bachelor's Degree, 70% | Bachelor's Degree, 68% |
| Average age | 39 | 39 |
| Years of experience | 4 | 4 |
Interface developers and contract developers have different pay scales, as shown below.
| Interface Developer | Contract Developer | |
| Average salary | $103,286 | $91,433 |
| Salary range | Between $78,000 And $136,000 | Between $67,000 And $123,000 |
| Highest paying City | Oakland, CA | San Francisco, CA |
| Highest paying state | California | California |
| Best paying company | Kaiser Permanente | Avanade |
| Best paying industry | Health Care | Finance |
There are a few differences between an interface developer and a contract developer in terms of educational background:
| Interface Developer | Contract Developer | |
| Most common degree | Bachelor's Degree, 70% | Bachelor's Degree, 68% |
| Most common major | Computer Science | Computer Science |
| Most common college | Massachusetts Institute of Technology | Massachusetts Institute of Technology |
Here are the differences between interface developers' and contract developers' demographics:
| Interface Developer | Contract Developer | |
| Average age | 39 | 39 |
| Gender ratio | Male, 73.7% Female, 26.3% | Male, 71.5% Female, 28.5% |
| Race ratio | Black or African American, 4.7% Unknown, 4.9% Hispanic or Latino, 8.4% Asian, 29.7% White, 52.1% American Indian and Alaska Native, 0.2% | Black or African American, 4.4% Unknown, 4.8% Hispanic or Latino, 8.1% Asian, 27.8% White, 54.8% American Indian and Alaska Native, 0.2% |
| LGBT Percentage | 8% | 8% |