DOODLE LABS (SG) PTE. LTD. Hiring! Full Time Senior Embedded Software Engineer in Central Region (Singapore), Earn up to SGD 6,000 - Ricebowl

Drive feature delivery and reliability for OpenWrt-based routers; be the go-to engineer for complex firmware issues and cross-discipline integration with RF and hardware teams.

Key Responsibilities:

• Lead design and implementation of medium-to-large features (driver tweaks, hostapd enhancements, ACS/DFS improvements, power management).
• Own troubleshooting of field escalations and complex regressions; design fixes and tests.     
• Improve CI/CD for firmware builds, add automated RF test hooks and performance benchmarks.       
• Mentor junior engineers, perform thorough code reviews, and champion best practices.
• Collaborate with RF/HW/product on calibration flows and factory provisioning.

Must-have:

• 5+ years embedded Linux experience with 3+ years on OpenWrt or similar embedded distributions.     
• Strong C, shell, and Python; experience with kernel debug (dmesg, perf, ftrace) and device trees.     
• Solid knowledge of Linux networking (bridging, ip, netfilter/nftables, qdisc) and wireless stacks (mac80211/hostapd).
• Experience shipping production firmware and participating in release processes.

Nice-to-have:

• Driver experience on Qualcomm/Atheros platforms, familiarity with ath9k/ath10k.
• Experience with Wi‑Fi roaming, mesh (802.11s), MLO or Wi‑Fi6 features.
• Background in OTA/A-B updates, secure boot, or telemetry stacks.