The software development and IT services industry has become a major contributor to organizational growth, digital transformation, and customer engagement across industries. In a highly competitive environment, client satisfaction has emerged as a critical factor influencing organizational sustainability and long-term business success. This study examines the impact of service quality on client satisfaction with special reference to Femtosoft Technologies, Chennai. The research focuses on evaluating the relationship between service quality dimensions and customer satisfaction among clients who have utilized the company’s software development services. A descriptive research design and quantitative research approach were adopted for the study. Primary data were collected through structured questionnaires from 106 respondents using convenience sampling. Statistical tools such as percentage analysis, reliability analysis, correlation analysis, regression analysis, and ANOVA were used for data interpretation. The findings reveal that service quality has a significant positive influence on client satisfaction. The correlation analysis indicates a moderate positive relationship between service quality and satisfaction (r = 0.466), while regression analysis confirms that service quality explains 23.4% of the variation in customer satisfaction. The study concludes that timely service delivery, technical expertise, responsiveness, and effective communication are major determinants of customer satisfaction in software development firms. The research also highlights the importance of post-project support, client relationship management, and digital service reliability in improving customer retention and long-term business performance.