Sujay Biswas

As a software engineer with 7 years of experience, I am driven by a deep ambition and determination to master complex technical challenges. My approach is rooted in logic and insightfulness, allowing me to dissect problems and engineer pragmatic, high-quality solutions. I thrive on continuously refining my skills and delivering impactful results.

Experience

Software Engineer

Marbles Health · May 2024 – Present

Not yet confirmed

• ● Designed and implemented resilient session flow logic, reducing session crashes by 35% and ensuring smooth handling of
• multi-session scenarios.
• ● Delivered cross-platform features for mobile and desktop apps supporting EEG and tDCS therapy, leading to a 30% reduction
• in session-related errors and improved device communication.
• ● Integrated AI assistants (ChatGPT, Claude, Cursor) into daily development workflow to boost productivity, reduce debugging
• time, and accelerate feature delivery by up to 40%.
• ● Designed a concurrent data processing pipeline using Flutter isolates and asynchronous streams to handle parallel EEG data
• streaming, tDCS control commands, and MQTT session events without blocking the UI thread.
• ● Delivered Unity-based cognitive therapy game integration for the EASE platform, enabling treatment sessions for 1400+
• patients across 75+ clinics and supporting 1200+ clinical sessions.
• ● Collaborated with firmware engineers to integrate BLE and implement robust error handling, enabling real-time EEG/tDCS
• synchronization via MQTT between the patient app and doctor dashboard.
• ● Researched device capabilities and explored new BLE-based implementation methods, including in-depth study of SHAM
• stimulation protocols and relevant clinical studies to support advanced therapy features and ensure evidence-based development.

Software Engineer, AI-Enhanced Development

Marbles Health · May 2024 – Mar 2026

Not yet confirmed

• 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.
• Architected a concurrent processing pipeline using Flutter isolates and async streams, reducing EEG upload time from 90 seconds to under 15 seconds (~ 83% improvement) while processing MQTT events and tDCS commands in parallel.
• 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.

A

Full Stack Mobile App Developer

Applite Solutions · Nov 2023 – May 2024

Not yet confirmed

• 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 Play Store & App Store ensuring compliance, stability, and smooth release.
• Designed and implemented CI/CD pipelines, cutting manual release effort by 70% and enabling consistent bi-weekly deployments with faster QA and feedback loops.

Full Stack Mobile App Engineer

Applite Solutions LLC · Nov 2023 – May 2024

Not yet confirmed

• ● Working on Hibiscus Health app (HIPPA compliant) and creating pixel perfect designs following material UI from Figma designs.
• ● Using GetX with MVC architecture as well as GetX for state management, routing, storage and dependency injection.
• ● Setting up CI/CD for code integration and delivery for agile development.

Software Engineer

IESoftek · Feb 2022 – Jun 2023

Not yet confirmed

• Healthcare Application
• Backend
• ● Wrote REST APIs to add functionalities in the project.
• ● Updated existing APIs to enhance or change existing functionalities.
• ● Wrote code to retrieve data, apply filters or modify existing aggregation
• operations.
• ● Wrote code following the MVC architecture and maintaining best
• coding practices.
• Flutter
• ● Worked as lead flutter developer following the MVCS architecture and
• best coding practices.
• ● Wrote code to create UI from figma designs, creating separate widgets
• for reusable components for both android and iOS,
• ● Wrote code to integrate the APIs with the mobile application.
• ● Integrated different packages to implement various UI designs.
• Angular
• ● Developed user interfaces suitable for both desktop and tablet views.
• ● Integrated the API
• ● Worked with type safe code.
• ● Worked with SASS to write efficient CSS.
• ● Worked with reactive forms, RxJs, observables and ng Bootstrap.

I

Web and Mobile App Developer

IE Softek · Sep 2021 – Mar 2023

Not yet confirmed

• 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.
• Built the Flutter mobile app from Figma designs, applying MVCS architecture and DRY principles for clean, maintainable code and seamless API integration.
• Architected and developed a production-ready Flutter mobile app from Figma designs using MVCS architecture and DRY principles, accelerating development speed by 30% and ensuring high maintainability and smooth backend integration.
• Developed full-stack proficiency with Angular, SASS, Express.js, and Postman for full-stack development and API testing.

Flutter developer

I AM IN WORLD · Sep 2021 – Feb 2022

Not yet confirmed

• Edtech Application
• - Supervised 3 interns under me
• - I was responsible for content Coding
• - Code review for all content
• - Creating general widgets for repetative designs