EMPIRICAL ANALYSIS OF PROFESSIONAL PRACTICE GAPS BETWEEN LICENSED SOFTWARE ENGINEERS AND NON-LICENSED DEVELOPERS

Abstract

Software engineering (as opposed to civil, chemical, and mechanical engineering) is not regulated, unlike its ubiquitous use in the safety-critical infrastructure (healthcare, finance, transportation), where failure results in security breach, loss of money, and loss of human lives. The research is an empirical measure of professional practice differences between licensed software engineers and non-licensed developers, which test the hypothesis that formal licensure would increase the process governance but not reduce technical innovation. Social survey, project audits and DevOps metrics are mixed-method to address 800 developers (400 licensed through NCEES/ABET, 400 not). Performance is benchmarked on the Professional Practice Index (PPI = 0.4 x Quality + 0.3 x Ethics + 0.3 x Risk) of which the Random Forest classification (100 trees) has a test accuracy of 90% (n=160). Multidimensional separation is confirmed by 3D visualization and confusion matrix analysis (95% licensed sensitivity).  Licensed engineers have a higher PPI score (0.823 0.087 vs. 0.678 0.118, p=0.001) with documentation compliance (29.2% feature importance) and test coverage (23.1%) prevailing. The advantages of process discipline are proven by geometric feature space segregation, whereas technical parity is proven with equivalent Quality scores (5.3% importance). Licensed teams are also equal to the speed of innovation but are more effective in regulatory traceability demanded in mission-critical systems. Licensing establishes a quantifiable governance upgrading essential in safety critical areas, and facilitates hybrid regulation: licensure required in safety-critical areas (PPI 0.80 systems in healthcare, avionics, finance), voluntary certification in others. The policy should modify NCEES examinations regarding distributed systems, ABET should do more of software accreditation and industry should use PPI benchmarking. This confirms causal facts that industrialize IEEE/ACM professionalization controversies to offer software engineering as civil engineering-level profession that balances responsibility and innovativeness.