KRISHANU DEV

Experienced Embedded Software Engineer specializing in developing, integrating, and debugging firmware for broadband and mesh networking devices on OpenWRT and IOPSYS platforms. Skilled in EasyMesh daemon integration (1905.1, mapd, wapp), TR-181 data model implementation, and LuCI/UBUS system customization. Proven track record of resolving critical networking issues (PPPoE, dnsmasq), implementing MAC filtering, LED logic, and health monitoring scripts. Proficient in UART, Wireshark, and wifiman for diagnostics with a strong knowledge of ACS platforms (GenieACS, AVSystems, Justify ACS) and expertise in C, Python, and JavaScript.

• Merlin (AN7552 – AmayaOS), Wi-Fi 6 PON device based on Airoha EN7552 chipset; integrated EasyMesh daemons (1905.1, mapd, wapp) for mesh networking and developed firmware enhancements on OpenWRT-based AmayaOS.
• Moksha (EN7529 / EN7562), IOWRT-based Wi-Fi 6 devices using Airoha chipsets. Worked on both internal projects: Sutlej (EN7529 – PON device) and Beas (EN7562 – Ethernet-based mesh extender), contributing to firmware development, EasyMesh integration, and system debugging.
• Genexis, Europe-based company under the GX Group, focused on broadband solutions. Worked on Ethernet-based devices during internship, contributing to LuCI UI bug fixes, backend integration, and system-level enhancements.

• Integrated and debugged IEEE 1905.1, mapd and wapp daemons
• Implemented foreground-mode process control via procd
• Fixed WPS mesh onboarding issues using unique backhaul SSID logic
• Validated Multi-AP Specification v2.0 CMDU compliance using Wireshark
• Used wifiman and UART serial for debugging client steering & signal metrics
• Designed and developed custom Mesh GUI for LuCI

Developed TR-181 parameters:

• Device.WiFi.*, Radio.*, SSID.*, Endpoint.*, PPP.*, Client.*
• Device.DeviceInfo.TemperatureStatus
• Device.WiFi.DataElements.Network.ID
• SSID.{i}.SSID, Band, MultiAPSteeringSummaryStats.NoCandidateAPFailures, BTMQueryResponses
• AssociationEvent.AssociationEventData.{i}.BSSID, StatusCode
• DisassociationEvent.DisassociationEventData.{i}.ReasonCode
• FailedConnectionEvent.FailedConnectionEventData.{i}

Integrated Airtel-specific TR-181 extensions:

• X_AIRTEL_Client_DownSteer_RCPI_Threshold, X_AIRTEL_Client_UpSteer_RCPI_Threshold
• Mapped UBUS responses to TR-181 hierarchy

• Fixed LuCI UI & backend bugs during Genexis internship
• Debugged PPPoE session drops by analyzing pppd logs and applying keepalive, persist, demand=0
• Resolved dnsmasq startup failure by removing port 53 conflicts
• Designed MAC filtering logic using UCI + LuCI (proto all, option dest *)
• Developed Ethernet & LOS LED behavior for WAN & mesh status
• Wrote cron-based health monitoring scripts with HTML logs

• UART: Boot-time inspection via TTL USB console
• Wireshark: Mesh packet capture & filter
• Wifiman: Steering and metric diagnostics
• Gitk: Git visualization and history tracing
• Cscope & Ctags: Code navigation and symbol indexing in C projects

Cracked NIMCET with AIR 221