Sai Poojitha Lingampalli

Embedded Firmware Developer with a strong passion for innovation and problem-solving. Experienced in firmware development, real-time system integration, and IoT-based embedded applications.

Jr. Embedded Firmware Developer at AquaExchange Agritech Pvt. Ltd. (2025-01 – Present)

• Developed an IoT-based automated feeding system to ensure accurate feed dispensing and minimize manual effort in aquaculture management.
• Implemented secure identification and access control by integrating the PN532 RFID module over the I²C communication protocol.
• Secured ESP32-to-cloud communication using TLS 1.2 with CA certificate validation, ensuring encrypted data transmission over Wi-Fi for remote device monitoring.
• Implemented ESP-NOW peer-to-peer mesh communication on ESP32 (FreeRTOS), enabling sub-10ms latency sensor data exchange between 4 nodes at 2.4 GHz; validated using serial logs and packet-level monitoring.
• Designed and deployed a Raspberry Pi wireless access point to improve connectivity and communication between IoT devices.
• Developed Smart BMS Monitoring System with real-time power consumption tracking over RS485; analyzed voltage/current telemetry for battery health diagnostics.
• Developed firmware for an RFID-based temperature logging system in a shrimp processing plant, enabling dynamic UI context switching (tub/area) based on RFID card type and transmitting sensor data to a cloud server via RESTful APIs over Wi-Fi.
• Built dual-sensor temperature monitoring firmware to capture and transmit ambient (air) and water temperatures, enabling real-time validation of optimal environmental conditions through cloud-based monitoring.
• Developed UART-based embedded firmware to acquire, process, and validate real-time weight data from an industrial scale, with server-configured thresholds and LED-based indication for in-range and out-of-range conditions in shrimp packing operations.
• Tracked and documented firmware defects and feature validations using JIRA, tested and verified RESTful API endpoints using Postman for cloud data transmission workflows.
• Strengthened analytical and debugging abilities by working on real-time embedded systems and hardware integration.

Electric Loco Shed (Intern) at East Coast Railway (2024-04 – 2024-05)

• Trained in railway signaling and communication, electric locomotive maintenance operations, and train safety systems including Kavach (ATP).

Btech. in Electronics and Communication Engineering – Vignan's Institute of Information Technology (2021 – 2025)