To thrive as a Software Developer in a part-time, 3-days-per-week role, you need a solid background in programming languages (such as Python, Java, or JavaScript), software design principles, and a relevant degree or proven experience. Familiarity with development tools like Git, integrated development environments (IDEs), and possibly certifications such as AWS Certified Developer or Microsoft Certified: Azure Developer Associate is beneficial. Strong time management, self-motivation, and effective communication are crucial soft skills for maximizing productivity and collaborating with teams despite a reduced schedule. These capabilities ensure you can deliver quality code, meet project goals, and integrate seamlessly with full-time colleagues even within limited working hours.