Embedded Software Developer (Mid-Level) - Network Switch

Description Embedded Software Developer (Mid-Level)

• Network Switch Location: Hanoi, Vietnam. Full-time.

About the role

We are building a new switching software team in Hanoi to own the network operating system on Zhone's carrier Ethernet switches. These are products running in live operator networks in Europe. This is a role for a strong embedded Linux developer who wants to become a switching specialist. Previous switch silicon experience is not required.

What we need is depth in embedded C on Linux, a real understanding of networking, and the appetite to learn quickly — the specialist knowledge is what the senior developers on the team will teach you.

What you will do

Implement and maintain switching features on our Linux-based NOS — VLANs, link aggregation, spanning tree, QoS, access lists, multicast snooping, DHCP relay. Write drivers and platform code against switch ASIC and PHY SDKs. Build and debug images for our switch platforms, and diagnose failures on real hardware in the lab.

Write test cases and automation that prove a feature works and keep it working. Investigate and resolve defects reported from customer networks. Document what you build, including build and debug procedures.

What we offer

Structured mentorship from senior switching developers and a deliberate path from general embedded work into a specialism that is scarce in the market. You will work on hardware you can hold, in networks carrying real subscriber traffic.

Requirements

3–6 years of embedded software development, primarily in C. Solid embedded Linux experience: cross-compilation, kernel modules or drivers, user-space system software, and a build system such as Yocto, Buildroot or equivalent. Networking knowledge — the OSI model in practice, Ethernet framing, VLANs, switching versus routing, TCP/IP.

Hands-on with Wireshark or equivalent. Ability to work from a datasheet and a register map, and to debug on hardware with a serial console and JTAG. Version control (Git; SVN useful) and a disciplined approach to code review. Working English, at least in reading and writing. Bachelor's degree in Computer Science, Electronics, Telecommunications or equivalent experience.

Nice to have

Exposure to switch or router software, or to an ASIC/NPU SDK. Telecom or networking equipment background — OLT, DSLAM, CPE, base station, enterprise switching. Scripting for test automation (Python). L2 protocol implementation experience of any kind. Familiarity with SNMP, CLI frameworks, or NETCONF/YANG.