A Junior Customer Success Manager (CSM) is responsible for supporting customer relationships, ensuring satisfaction, and driving product adoption. They assist senior team members in onboarding clients, addressing inquiries, and identifying opportunities for growth. Their role involves proactive communication, problem-solving, and coordinating with internal teams to enhance customer experience. Junior CSMs typically work with smaller accounts or assist on larger ones while developing their skills in customer relationship management. Over time, they gain experience to take on more responsibilities and lead accounts independently.