Embedded Linux Firmware Developer

Axisindia; India; On-site; INR 850,000 - 1,200,000; Full time

Job summary

Axisindia is seeking an Embedded Linux Firmware Developer with hands-on experience in embedded systems and Linux-based development. Ideal candidates should possess strong C/C++ skills and security implementation experience.

This role involves optimizing firmware for various products, implementing security features, and collaborating across teams to ensure optimal system performance.

Qualifications

• 3+ years of experience in embedded Linux firmware development.
• Hands-on experience with implementing security features in embedded systems.
• Knowledge of networking and communication protocols (TCP/IP, MQTT, Modbus).

Responsibilities

• Develop, maintain, and optimize embedded Linux firmware for ARM-based platforms.
• Implement secure boot and firmware signing for secure update mechanisms.
• Collaborate with hardware, QA, and cloud teams to ensure system-level integration.

Skills

Embedded Linux Development

C/C++ Programming

Security Implementation

System Integration

Debugging Skills

Education

Bachelor’s or Master’s degree in Electronics, Computer Science, or related field

Tools

Yocto

Docker

Jenkins

Job description

Embedded Linux Firmware Developer with hands-on experience in embedded systems, Linux-based development, and security implementation. The role involves developing, optimizing, and securing firmware for products such as industrial controllers, IoT devices, and EV systems using embedded Linux platforms. This position is ideal for someone passionate about low-level programming, system-level security, and secure connected device development.

Key Responsibilities:

Embedded Linux Development:

• Develop, maintain, and optimize embedded Linux firmware for ARM-based platforms (Cortex-A).
• Customize bootloaders (e.g., U-Boot), kernel configurations, and device tree overlays.
• Develop system services, daemons, and user-space applications using C/C++ and shell scripting.
• Integrate drivers for peripherals (UART, SPI, I2C, GPIO, CAN, Ethernet, USB, etc.).

Security Implementation:

• Implement secure boot, firmware signing, and encryption for secure update mechanisms.
• Develop or integrate security protocols: TLS/SSL, DTLS, AES, ECC, RSA, SHA.
• Handle Linux security features such as SELinux, AppArmor, sandboxing, and secure user permission models.
• Work with TPM (Trusted Platform Module), secure elements, and HSMs where applicable.

Security Implementation and Role-Based Access Control:

• Implement role-based access control (RBAC) for system services, web interfaces, and remote access.
• Develop secure boot processes, encrypted firmware updates, and hardware-backed key storage.
• Utilize Linux security mechanisms (SELinux, AppArmor) and system hardening techniques.
• Integrate cryptographic protocols: TLS/SSL, AES, RSA, ECC, SHA for secure communication.
• Work with TPM (Trusted Platform Module), secure elements, and HSMs where applicable.

System Integration & Testing:

• Collaborate with hardware, QA, and cloud teams to ensure system-level integration and performance.
• Use debugging tools such as gdb, strace, tcpdump, JTAG, and oscilloscopes.
• Develop and run automated test scripts for regression and stress testing.

Documentation & Support:

• Maintain thorough documentation of firmware architecture, interfaces, APIs, and security mechanisms.
• Participate in code reviews and maintain best practices for secure coding.
• Provide post-deployment support including diagnostics, performance analysis, and security patching.

Required Qualifications and Experience:

• Bachelor’s or Master’s degree in Electronics, Computer Science, or a related field.
• 3+ years of experience in embedded Linux firmware development.
• Strong C/C++ programming skills with a good understanding of Linux internals.
• Experience with embedded Linux build systems (Yocto, Buildroot).
• Hands-on experience with implementing security features in embedded systems.
• Knowledge of networking and communication protocols (TCP/IP, MQTT, Modbus, etc.).
• Implement industrial protocols such as MODBUS RTU/TCP, DNP3, or IEC 104 for SCADA connectivity. Handle data mapping, polling, and real-time event handling for control center integration.
• Optimize communication stacks for reliability and security in harsh or remote environments.

Preferred Skills:

• Experience with secure OTA (over-the-air) updates and bootloaders.
• Familiarity with containers on embedded Linux (e.g., Docker, Podman).
• Exposure to cybersecurity standards (e.g., IEC 62443, ISO 27001, NIST).
• Familiarity with CI/CD for firmware using tools like GitLab CI, Jenkins, or similar.
• Scripting skills (Python, Bash) for automation and testing.

Personal Attributes:

• Security-first mindset with strong attention to detail.
• Strong problem-solving and debugging skills & ability to work independently and as part of a cross-functional team.