Full Stack Web Developer/ Embedded Software Developer

Greetings from Optilink Network Pvt Ltd

We are looking for 2 profiles

Linux kernel, device drivers, board bring-up and system-level debugging

Linux services

The ideal candidate will work on the networking subsystem of the Linux kernel and contribute to core networking protocol implementations used in high-performance networking products such as ONTs, OLTs, switch and Routers.

Youll collaborate closely with hardware, firmware and system architecture teams to deliver high-quality embedded Linux solutions for production-grade products

Role & responsibilities

• Design, develop and maintain Embedded Linux system software for custom hardware platforms.
• Perform board bring-up from sractch, cross-toolchain, bootloader customization (U-Boot) and kernel configuration for network-oriented SoCs.
• Build and maintain Linux root filesystems using Yocto, Buildroot, Debian-based systems.
• Develop and integrate Linux kernel drivers, protocol stack optimizations, netfilter/bridge subsystems, device trees and board support packages (BSP).
• Develop and optimize platform drivers, gpio and network device drivers.

for Web Developer

• Design and implement web UIs served from the device for configuration, monitoring and firmware upgrades.
• Define and implement the device UI API contract (REST/JSON, WebSocket, gRPC-Web, or similar).
• Build the UI that queries the API (polling or websocket) and renders live values (tx/rx packets, errors, throughput). SNMP or netlink can also be used depending on product needs which embedded kernel exposes network counters.
• Consume kernel and user-space data sources (netstats, system health, logs) and present them in the UI (live counters, charts, alerts).
• Implement secure firmware upload and upgrade flows (file upload on UI transfer to device daemon validation flash/activate rollback).
• Work with embedded engineers to expose required telemetry via stable and efficient interfaces (HTTP APIs, ubus/dbus, netlink, SNMP, /proc, sysfs).
• Integrate authentication, HTTPS/TLS, session handling, CSRF/XSS protections and RBAC for device UI.
• Build CI pipeline to package UI assets into the rootfs (Yocto/Buildroot/OpenWrt), perform cross-builds and deploy test images.

Preferred candidate profile

• 7+ years of hands-on experience in Embedded Linux system development, preferably in networking products (eg. GPON products and Switches).
• Strong proficiency in C/C++ programming for both kernel and user space.
• Strong Proficiency with

  Board-bring up process, cross-toolchain,

  bootloaders (U-Boot), device tree configuration, and BSP customization.
• Proficiency with Yocto Project, Buildroot or similar build systems.

• Strong front-end web development: HTML5, CSS3, JavaScript and at least one modern framework (React, Vue, or Svelte) and state management (Redux/Vuex/Pinia).
• Front-end: JavaScript, TypeScript (preferred), HTML, CSS
• Frameworks/libraries: React or Vue (or Svelte) + charting libs (Chart.js, D3 or equivalent)
• Backend / embedded service languages: C, C++, Python, Go, Lua (any one or two is fine)
• Dev tools: git, curl, Postman, tcpdump, wireshark, strace, gdb (when debugging user-space)
• Web servers: uHTTPd, lighttpd, nginx (embedded builds)