Principal Engineer

Job Description About the Role We are looking for an experienced Principal Engineer Mobile Development to take end-to-end ownership of mobile engineering initiatives at ACKO. You'll play a hands-on role in designing, developing, and optimizing high-scale consumer mobile applications that power millions of user interactions every day. This role is perfect for someone who thrives on solving complex technical challenges, influencing product direction through strong engineering principles, and building robust, scalable, and high-performing mobile experiences. As a Principal Engineer, you will work closely with product managers, designers, and backend teams to deliver seamless and performant applications while raising the overall technical bar for mobile engineering at ACKO. Key Responsibilities - Technical Ownership: Lead the design and implementation of scalable, high-performance mobile applications (primarily Flutter-based) for Android and iOS. - Code & Design Excellence: Set the tone for clean, maintainable, and efficient mobile codebases; ensure adherence to best coding and design principles. - Cross-functional Collaboration: Partner with Product, Design, and Backend teams to deliver cohesive, reliable, and delightful user experiences. - Performance Optimization: Continuously measure and improve app performance startup time, responsiveness, crash-free sessions, and battery efficiency. - Innovation: Evaluate and integrate new mobile technologies, frameworks, and developer tools to improve velocity and app quality. - Developer Productivity: Build shared components, tools, and SDKs to streamline development workflows across multiple product lines. - Monitoring & Reliability: Implement and maintain analytics, observability, and monitoring solutions to ensure app health and proactive issue detection. - Mentorship: Guide and mentor senior engineers, fostering a strong culture of technical excellence and continuous learning. - Security & Compliance: Champion secure coding practices, data protection, and privacy compliance in mobile development. Required Qualifications - Experience: 9-12 years in mobile app development, with at least 23 years in a senior or principal individual contributor role. - Proven experience in building and scaling consumer-grade mobile applications with millions of active users. - Strong expertise in Flutter and familiarity with native Android and iOS development. - Deep understanding of mobile architecture patterns (MVP, MVVM, Clean Architecture) and performance optimization techniques. - Proficiency in integrating RESTful APIs, GraphQL, and third-party SDKs. - Hands-on experience with CI/CD pipelines, automated testing, and release management for mobile apps. - Deep understanding of NFRs uptime, latency, load time, app size, and overall reliability at scale. - Strong grasp of mobile security best practices and user data protection. - Excellent analytical, debugging, and problem-solving skills. - Strong communication and collaboration skills, capable of working across multiple product pods. Preferred Qualifications - Experience building shared mobile frameworks or SDKs for use across multiple teams or apps. - Exposure to cloud-native integrations, BFF (Backend for Frontend) architectures, and scalable API design principles. - Familiarity with mobile observability tools, analytics frameworks, and A/B testing platforms. - Prior experience in a fast-paced consumer internet or product-led technology company. - Passion for creating world-class mobile experiences that balance performance, usability, and reliability.