Sujay Biswas

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Skills

Experience

• Software Engineer at Marbles Health

  2024-05-01 – 2026-03-31

  Designed and implemented resilient session flow architecture, reducing crashes by 35% and ensuring reliable handling of complex multi-session and edge-case scenarios. Delivered cross-platform (mobile + desktop) EEG and tDCS therapy features, reducing session-related errors by 30% and improving real-time device communication stability. Engineered a concurrent data processing pipeline using Flutter isolates and async streams to handle parallel EEG streaming, tDCS commands, and MQTT events without blocking the UI thread. Integrated BLE + MQTT-based real-time synchronization between patient and doctor applications, collaborating closely with firmware teams to ensure stable EEG/tDCS communication. Delivered Unity-based cognitive therapy game integration, supporting 1400+ patients across 75+ clinics and enabling 1200+ clinical sessions. Led end-to-end session lifecycle improvements, including resume, pause/play, multi-session handling, and robust error recovery—significantly improving reliability in production environments. Improved device reliability and UX by implementing firmware upgrades, battery visibility logic, conductivity validation flows, and real-time user guidance during EEG setup. Built and enhanced doctor dashboard features, including session monitoring, multi-session handling, patient prioritization, search functionality, and calendar-based session tracking. Integrated AI tools (ChatGPT, Claude, Cursor) into development workflow, boosting productivity and reducing debugging time—accelerating feature delivery by up to 40%. Researched BLE-based device capabilities and SHAM stimulation protocols, contributing to evidence-based feature development aligned with clinical standards.

• Mobile App Developer at Applite Solutions

  2023-11-01 – 2024-05-31

  Built a HIPAA-compliant healthcare application with pixel-perfect UI from Figma designs, delivering a consistent and seamless experience across Android and iOS platforms. Architected application structure using GetX with MVC, handling state management, routing, dependency injection, and local storage—reducing code complexity by ~30% and accelerating feature delivery. Managed end-to-end deployment lifecycle across Google Play Store and Apple App Store, ensuring compliance, stability, and smooth release cycles. Designed and implemented CI/CD pipelines, cutting manual release effort by ~70% and enabling consistent bi-weekly deployments with faster QA and feedback loops.

• Web And Mobile App Developer at IE Softek

  2021-09-01 – 2023-03-31

  Drove feature development and performance optimization for the Cliniceo healthcare platform (web + mobile), enabling successful onboarding of 10+ B2B clients and improving overall system responsiveness. Architected and delivered a scalable Flutter mobile application from Figma designs using MVCS architecture and DRY principles, reducing code redundancy and accelerating development velocity by ~30%. Designed robust API integration layers, ensuring reliable data flow, improved error handling, and seamless communication between frontend and backend systems. Developed full-stack proficiency by working with Angular(12+), SASS, Express.js, and Postman for feature development and API testing.

Education

• University Of Kalyani · B.tech · Electronics & Instrumentation · From 2016 – 2020
• University Of Kalyani · B.tech · Electronics & Instrumentation · From 2016 – 2020

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