Embedded Software Developer

About the Role

We are building the deterministic networking backbone of India's next generation launch vehicles. As an Embedded Software Engineer on our Flight Avionics team, you will own the firmware development of our Time-Sensitive Networking (TSN) switch built around a deterministic Ethernet switch IC. Your work will directly influence the safety and reliability of flight control communications – where every microsecond counts.

Key Responsibilities

• Develop, bring up, and maintain Linux kernel and user-space drivers for deterministic Ethernet switch ICs, including MDIO, SPI, and vendor Switch API integration.
• Implement and validate IEEE 802.1Qbv (Time-Aware Shaper) and IEEE 802.1AS (gPTP) to achieve deterministic, sub-microsecond forwarding for flight-critical frames.
• Architect and tune packet switching fabric for guaranteed real-time latency across multi-port TSN topologies used in flight control bus architectures.
• Implement high-availability redundancy schemes (HSR / PRP) to ensure seamless failover in dual-ring and parallel-path network configurations.
• Write, automate, and execute longevity and stress tests using Python, Shell, and Tcl/Expect scripting across embedded hardware targets.
• Debug hardware and software issues using JTAG, GDB, and in-circuit emulators; triage and resolve interrupt-driven DMA race conditions and timing violations.
• Manage and evolve large-scale C codebases under Git-based version control; participate in rigorous code review and documentation practices.
• Collaborate closely with avionics hardware engineers on board bring-up, signal integrity, and system-level validation.

Required Skills

• 5–10 years of hands-on embedded networking firmware development.
• Expert-level C programming in Linux / Embedded OS environments; strong understanding of memory management, concurrency, and interrupt handling.
• Deep knowledge of the OSI model, TCP/IP stack internals, and Ethernet switching fabric design.
• Proven experience with automotive-grade Ethernet switch ICs (e.g. Microchip VSC/LAN series, NXP, Marvell) and integration of vendor Switch APIs.
• Solid understanding of TSN standards: IEEE 802.1AS, 802.1Qbv, 802.1Qav, and related traffic-shaping mechanisms.
• Proficiency with hardware debuggers: JTAG, GDB, OpenOCD, and in-circuit emulators.
• Scripting skills in Python, Shell, Perl, or Tcl/Expect for test automation and embedded platform validation.

Desired / Bonus Skills

• Hands-on experience with Microchip LAN969x series switch ICs and integration of the Microchip Switch API / SDK.
• Experience implementing HSR (IEC 62439-3) or PRP redundancy protocols on real hardware.
• Familiarity with bootloader development (U-Boot, custom FSBL) and Yocto/Buildroot BSP bring-up.
• Exposure to aerospace, automotive (ISO 26262), or industrial functional safety standards (IEC 61508).
• Contributions to upstream Linux kernel networking drivers (netdev, PHY, tc-taprio offload).
• Experience with RTOS environments such as FreeRTOS, Zephyr, or VxWorks.

Qualifications

• B.E. / B.Tech in Electronics, Electrical, or Computer Science Engineering (or equivalent).
• Strong academic foundation in digital communication systems and real-time operating systems.