Bluetooth Developer

Location: Chennai
Department: Connectivity / Bluetooth
Experience: 4–8 Years
Employment Type: Full-time
Reports To: Technical Lead / Manager – Connectivity

Job Summary

We are looking for an experienced Bluetooth Developer to design, develop, integrate, and validate Bluetooth features for automotive infotainment and connectivity platforms.

The role involves working on Android/Linux Bluetooth stacks, Bluetooth Classic and BLE profiles, audio and telephony, interoperability, performance optimization, and complex issue debugging. The candidate will collaborate with cross-functional teams including Telematics, Platform, UI/UX, Validation, Chipset Vendors, and OEM teams to deliver reliable Bluetooth solutions for production programs.

Key ResponsibilitiesBluetooth Stack Development & Integration

- Develop, customize, integrate, and maintain Bluetooth stack components such as Android Fluoride, BlueZ, or OEM Bluetooth stacks.
- Implement and enhance Bluetooth profiles including:
- HFP – Hands-Free Profile
- A2DP – Advanced Audio Distribution Profile
- AVRCP – Audio/Video Remote Control Profile
- PBAP – Phone Book Access Profile
- MAP – Message Access Profile
- HID – Human Interface Device
- PAN – Personal Area Networking
- SPP – Serial Port Profile
- BLE GATT profiles and services
- Work on Android Bluetooth Framework, Bluetooth Service, HAL, and native stack layers.
- Design, implement, and modify software components based on product requirements.
- Analyze existing architecture and contribute to design and implementation improvements.

Bluetooth Audio & Telephony

- Develop and debug Bluetooth audio and telephony features.
- Work on audio routing, SCO/eSCO connections, codec configuration, and Bluetooth audio performance.
- Debug issues such as:
- Audio stuttering
- Incorrect playback speed
- Audio delay and synchronization issues
- One-way audio
- No audio during calls
- Call connection and disconnection issues
- Optimize Bluetooth audio latency, bandwidth, and codec performance.
- Work with codecs such as SBC, AAC, aptX, and LC3.

Bluetooth Low Energy (BLE)

- Develop and integrate BLE profiles, GATT services, scanning, and advertising.
- Work with BLE pairing, bonding, privacy, and address types.
- Analyze and improve BLE connection and reconnection behavior.
- Work with random/static addresses and BLE security mechanisms.




- Develop and optimize BLE coexistence strategies with Wi-Fi.

Connectivity, Coexistence & Performance

- Analyze and resolve Bluetooth/Wi-Fi coexistence issues.
- Debug pairing failures, connection drops, reconnection issues, and link-quality problems.
- Analyze HCI command/response flows and Bluetooth link behavior.
- Work with RF-related parameters and performance optimization.
- Collaborate with chipset vendors to investigate and resolve connectivity issues.

Debugging & Root Cause Analysis

- Analyze Bluetooth issues using tools such as:
- HCI snoop logs
- Bluetooth HCI logs
- Bluetooth air-sniffer logs
- btmon
- btsnoop
- Android adb and logcat
- QXDM for modem/Bluetooth integrated chipsets
- Perform detailed root cause analysis (RCA) for complex development, integration, and field issues.
- Debug issues reported by OEMs, customers, validation teams, and internal stakeholders.
- Work closely with chipset vendors such as Qualcomm, MediaTek, CSR, TI, and NXP for issue resolution.

Interoperability & Bluetooth Certification

- Support Bluetooth interoperability (IOP) testing across Android and iOS devices.
- Execute and analyze Bluetooth SIG qualification and certification test cases.
- Execute PTS test cases using Bluetooth SIG Launch Studio.
- Support Bluetooth certification activities and maintain required technical documentation.
- Ensure compliance with applicable Bluetooth SIG specifications and requirements.

Software Quality & Development Process

- Participate in code reviews, unit testing, integration testing, and defect resolution.
- Perform static code analysis and resolve identified software quality issues.
- Follow automotive software development and quality processes, including ASPICE.
- Participate in Agile/Scrum development activities.
- Prepare technical documentation, design documents, and implementation details as required.

Required Skills & Experience

- Strong hands-on experience with Bluetooth stack development and integration.
- Strong understanding of Android Fluoride, BlueZ,



or OEM Bluetooth stacks.
- Good knowledge of Bluetooth Classic and Bluetooth Low Energy (BLE) protocols.
- Strong understanding of:
- L2CAP
- SDP
- RFCOMM
- GATT
- AVDTP
- AVRCP
- HFP and AT commands
- PBAP
- MAP
- Strong programming experience in C/C++.
- Experience with Java and Android system programming is preferred.
- Good understanding of Linux/Android architecture and system programming.
- Strong knowledge of Bluetooth HCI, controller behavior, pairing, bonding, LE privacy, and Bluetooth address types.
- Experience working with A2DP, AVRCP, HFP, PBAP, and MAP.
- Good understanding of Android audio architecture, including AudioFlinger and Audio HAL.
- Ability to analyze Bluetooth/Wi-Fi coexistence and RF-related issues.
- Experience with Bluetooth debugging tools and log analysis.
- Experience with static analysis tools and software quality processes.
- Experience executing Bluetooth SIG PTS test cases using Launch Studio.

BLE / RTOS Experience

- Experience working in an RTOS environment with BLE chipsets and vendor SDKs is an advantage.
- Exposure to BLE platforms such as:
- Nordic Semiconductor – nRF52840, nRF52832
- Texas Instruments – CC2540, CC2541
- NXP – AW611, AW300, KW36, KW45
- Experience integrating and debugging vendor Bluetooth/BLE SDKs is preferred.

Positive to Have

- Experience with automotive infotainment systems.
- Exposure to Android Automotive, QNX, or GENIVI platforms.
- Experience with Qualcomm, MediaTek, NXP, or similar Bluetooth chipsets.
- Knowledge of ACL/SCO link behavior and Bluetooth codec tuning.
- Experience working with automotive OEM infotainment programs.
- Exposure to OEM platforms such as Ford, JLR, GM, Stellantis, Volkswagen, or similar automotive programs.
- Experience working directly with chipset vendors and OEM engineering teams.

Key Skills

Bluetooth | Bluetooth Developer | Bluetooth Stack | Android Bluetooth | Fluoride | BlueZ | Bluetooth Classic | BLE | A2DP | AVRCP | HFP | PBAP | MAP | GATT | L2CAP | RFCOMM | SDP | AVDTP | HCI | Bluetooth Audio | SCO | eSCO | Wi-Fi Coexistence | Android | Linux | C | C++ | Java | AudioFlinger | Audio HAL | HCI Snoop | btmon | btsnoop | QXDM | Bluetooth SIG | PTS | Launch Studio | Automotive Infotainment | Android Automotive | QNX | RTOS

Pay: Up to ₹2,400,000.00 per year

Work Location: In person

📌 Bluetooth Developer (Chennai)
🏢 Suitable Ai
📍 Chennai