Worked on the ni/nitypes-python repository to enhance API consistency and reliability by delivering two user-facing features focused on waveform data types. Applied Python and unit testing skills to standardize unit terminology across NumericWaveform and Spectrum, updating property names, setters, and error messages for improved clarity. Introduced a sample_count setter for DigitalWaveform and NumericWaveform, implementing capacity validation to prevent configuration errors and ensure data integrity. Refactored tests to reflect API changes and strengthened regression safety, updating documentation to clarify behavioral expectations. These efforts improved maintainability, reduced onboarding friction for new contributors, and enabled safer downstream use of the software.