This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Sr. Software Developer Engineer based in India. This is a senior frontend engineering opportunity focused on building modern, scalable, and high-performance web applications for SaaS products. You will play a key role in shaping frontend architecture, reusable component libraries, design systems, and intuitive user experiences. The position combines hands-on software development with technical decision-making, performance optimization, and engineering quality. You will collaborate closely with Product, UX/Design, and Backend teams to deliver customer-facing features from concept through production. The role also offers opportunities to mentor engineers and influence frontend standards and best practices. You will work with modern technologies including React, TypeScript, REST/GraphQL, automated testing, and contemporary development tooling. This is an ideal opportunity for an experienced UI engineer who enjoys solving complex technical challenges in a fast-paced SaaS environment.