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Hi, I’m Abraham Sajan, a mobile and web full-stack developer specializing in end-to-end Flutter and web apps, GenAI-powered solutions, and real-time event platforms for enterprise clients. I’ve led end-to-end development efforts, from secure ESP32 provisioning to cloud backends, MQTT-based device communication, and low-latency AI interactions. I enjoy turning complex requirements into production-worthy apps, collaborating across teams, and delivering scalable, maintainable solutions that blend hardware, software, and AI.…Hi, I’m Abraham Sajan, a mobile and web full-stack developer specializing in end-to-end Flutter and web apps, GenAI-powered solutions, and real-time event platforms for enterprise clients. I’ve led end-to-end development efforts, from secure ESP32 provisioning to cloud backends, MQTT-based device communication, and low-latency AI interactions. I enjoy turning complex requirements into production-worthy apps, collaborating across teams, and delivering scalable, maintainable solutions that blend hardware, software, and AI.

Abraham Sajan

App Developer, Web Developer, Full Stack Developer, +2

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Hi, I’m Abraham Sajan, a mobile and web full-stack developer specializing in end-to-end Flutter and web apps, GenAI-powered solutions, and real-time event platforms for enterprise clients. I’ve led end-to-end development efforts, from secure ESP32 provisioning to cloud backends, MQTT-based device communication, and low-latency AI interactions. I enjoy turning complex requirements into production-worthy apps, collaborating across teams, and delivering scalable, maintainable solutions that blend hardware, software, and AI.…Hi, I’m Abraham Sajan, a mobile and web full-stack developer specializing in end-to-end Flutter and web apps, GenAI-powered solutions, and real-time event platforms for enterprise clients. I’ve led end-to-end development efforts, from secure ESP32 provisioning to cloud backends, MQTT-based device communication, and low-latency AI interactions. I enjoy turning complex requirements into production-worthy apps, collaborating across teams, and delivering scalable, maintainable solutions that blend hardware, software, and AI.

Available to hire

Hi, I’m Abraham Sajan, a mobile and web full-stack developer specializing in end-to-end Flutter and web apps, GenAI-powered solutions, and real-time event platforms for enterprise clients. I’ve led end-to-end development efforts, from secure ESP32 provisioning to cloud backends, MQTT-based device communication, and low-latency AI interactions.

I enjoy turning complex requirements into production-worthy apps, collaborating across teams, and delivering scalable, maintainable solutions that blend hardware, software, and AI.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Solutions Engineer / App Developer at CFT 360 DESIGN STUDIO PVT. LTD.

December 1, 2024 - February 1, 2026

Lead Engineer for CheekoAI (Screen-free smart AI companion for kids). Implemented secure Wi-Fi provisioning for ESP32 hardware and real-time device communication via MQTT. Engineered OTA firmware updates, volume control, and media playback controlled from the app. Developed a high-performance Java backend and a custom MQTT gateway to orchestrate audio packet transfer and device signaling between ESP32 hardware and the AI cloud. Designed a sub-200 ms latency voice interaction system by bridging Generative AI models with a custom UDP-based audio streaming gateway, enabling natural, interruptible conversations. Managed a distributed multi-cloud deployment strategy, configuring Redis for caching and High-Performance MQTT Brokers (EMQX) to handle massive IoT concurrency. Defined system prompts and persona definitions for the agent, strictly defining the toy's educational tone, safety guardrails, and interactive logic.

Solutions Engineer / App Developer at CFT3 60 Designs Studio Pvt. Ltd.

December 1, 2024 - February 1, 2026

Lead engineer for CheekoAI, a screen-free smart companion for kids (EdTech). Implemented secure Wi-Fi provisioning for ESP32 hardware, real-time device communication via MQTT, OTA firmware updates, and native app controls for audio and media. Built a high-performance Java backend and a custom MQTT gateway to orchestrate audio packet transfer between ESP32 devices and the AI cloud. Designed sub-200ms latency voice interactions by bridging Generative AI models with a UDP-based audio streaming gateway. Managed distributed multi-cloud deployment, configured Redis caching and high-performance MQTT Brokers (EMQX), and defined system prompts for the agent.

Full-stack Flutter Developer at OverNinja Technologies LLP

June 1, 2024 - September 1, 2024

Built cross-platform Flutter apps and integrated back-end services. Implemented state management, real-time updates, and offline support. Collaborated across teams to deliver production-ready features for scalable mobile and web experiences.

Full-stack Flutter Developer at Over Ninja Technologies LLP

June 1, 2024 - September 1, 2024

Developed end-to-end Flutter applications and web interfaces, bridging hardware interactions and cloud services. Implemented secure provisioning, real-time device communication, and OTA updates; collaborated with backend and AI services to deliver integrated solutions.

Flutter Developer at SoftZane Solutions

May 1, 2023 - January 1, 2024

Built Flutter-based mobile apps and contributed to frontend web features using Next.js and TypeScript; integrated Firebase and REST APIs; optimized for performance and maintainability.