Joseph Stephen

Systems and firmware engineer with strong experience in building end-to-end products across hardware, firmware, and backend systems. Skilled in developing system architecture, low-level systems, integrating communication stacks (BLE/Wi-Fi), and delivering production-ready solutions from prototype to deployment.

Senior Firmware Developer at KaHa Technologies Pvt. Ltd. (2018-01 – Present)

• Designed and led the firmware architecture and implementation for an ESP32-based contact tracing platform, including embedded software, backend integration, automated testing tools, and production deployment.
• Designed and implemented watchface framework including firmware side implementation and Python based tooling for asset generation
• Designed a custom embedded UI framework with widget system, MicroPython integration, and TrueType font rendering
• Designed and implemented data collection pipelines and tooling for the AI/ML team
• Packaged and integrated MATLAB Coder-generated libraries for target MCUs and integrated them into the CI/CD build pipeline
• Delivered firmware releases for multiple production wearable products, coordinating with QA, manufacturing, and cross-functional teams
• Single point of contact for coordination between Indian production and Chinese firmware teams
• Built internal watchface tools for in-house designers (FTTM workflows)
• Designed and developed firmware build and test automation tools, containerized using Docker and integrated with CMake-based build workflows to improve validation and development efficiency.
• Worked onsite in China with the firmware team to support product integration, manufacturing, and production readiness
• Ported AOSP from a previous Android release with required shim libraries and low-level driver fixes

Senior Software Developer at Agrima Infotech (2017-01 – 2018-12)

• Led development of recipeblog.io using a custom PHP MVC architecture
• Designed and implemented REST APIs and multi-domain authentication (OAuth2-like system)
• Worked on Node.js-based WebSockets and ServiceWorker integrations
• Contributed to AMP optimization and frontend performance improvements
• Managed development tasks and coordinated with team members

Founder & CTO at Reckone Inventions Pvt. Ltd. (2014-01 – 2017-12)

• Led end-to-end development of embedded and IoT products, including firmware, PCB design, and system architecture
• Developed automotive solutions using OBD-II communication protocols
• Worked on BLE, 3D sensors, spectrum analysis, and power regulator design
• Built backend systems including REST APIs and database infrastructure for analytics and future ML use
• Managed server-side operations and coordinated cross-functional development efforts
• Contributed to product development for core product; Ridelogic

Freelance Web Developer at Cordial Infosolutions (2008-01 – 2014-12)

• Delivered web development projects for multiple clients across industries
• Worked with PHP frameworks (CodeIgniter, Laravel), WordPress (themes/plugins), and frontend technologies
• Developed applications using HTML5 Canvas, WebGL, and modern CSS3 techniques
• Collaborated with various companies on contract-based development work

Engineering Project Experience (Academic) at University Rover Challenge (Utah, USA) & CanSat (Texas, USA) (2014-01 – 2014-12)

• Selected as part of college team for international competitions
• Contributed to electronics, electrical systems, and mechanical design

B.Tech in Electronics & Communication