Docusign’s Mobile Engineering team is seeking an experienced Senior Software Engineer (P4) to build and scale our Intelligent Agreement Management platform on iOS. Docusign is moving beyond e-signatures to make agreements smarter, faster, and more connected across their entire lifecycle. Our team supports complex enterprise use cases while maintaining the world-class usability consumers expect from top App Store applications. As a Senior Engineer, you will lead the technical design of major mobile features and reusable SDK modules using your deep Swift expertise. In this role, you will collaborate with cross-functional teams while mentoring mid-level engineers to elevate the overall team. This position is an individual contributor role reporting to Senior Director, Engineering. Responsibility Feature and SDK Development: Design, build, and maintain complex, high-performance native iOS app features and modular SDK components using Swift Architecture and Design: Drive technical design discussions, author technical specification documents, and ensure codebase modularity, scalability, and maintainability. Engineering Excellence: Set high standards for code quality through rigorous code reviews, unit and UI testing, and continuous integration practices. Cross-Functional Partnering: Collaborate with Product Managers, UX Designers, QA, and backend platform teams to translate product requirements into robust iOS solutions. Mentorship and Leadership: Guide and mentor mid-level and junior engineers, fostering technical growth and sharing best practices across the team. Process and Pipeline Optimization: Identify bottlenecks in development workflows, build systems, or testing, and implement proactive solutions to improve velocity. Platform Evolution: Stay informed on Apple platform developments, Swift language updates, and iOS design trends, incorporating modern tools and frameworks where appropriate.