Sivasankar

Flutter Developer with 4 years of experience, progressed from intern to lead at Coinone Global Solutions. Expert in performance-critical Flutter applications, JSON-driven dynamic UI architectures, real-time chat systems, enterprise-grade offline-first workflows, cost-optimized Firebase usage, and OTA updates using Shorebird. Proven record of owning multi-year production systems end-to-end and shipping high-impact applications to Google Play Store and Apple App Store

Flutter Developer at Coinone Global Solutions (2022-01 – 2026-12)

Progressed from Intern to Lead, delivering production-grade Flutter applications for global clients and managing complete app lifecycle

• Delivered production-grade Flutter applications for global clients across US, UK, Saudi Arabia, and Qatar
• Built multi-application ecosystems (Customer Apps, CRM, Internal Tools) replacing manual and legacy workflows
• Owned complete app lifecycle from architecture → development → performance optimization → release
• Architected scalable systems using modular design and JSON-driven dynamic UI (150+ configurations)
• Designed offline-first applications with local caching and resilient network handling for low-connectivity environments
• Developed real-time features including chat systems with pagination and optimized backend sync
• Integrated native SDKs (thermal printers) using platform channels for enterprise POS applications
• Collaborated on enterprise ERP systems with on-site deployment and industrial UX adaptations
• Mentored developers, conducted code reviews, and enforced scalable architecture standards
• Managed production releases across Play Store & App Store, including OTA updates for rapid hotfix deployment

Bachelor Of Computer Science in Computer Science – College Of Applied Science Thodupuzha (2016-01 – 2019-12)