Senior lead engineer Resume

SUMMARY:

Experienced engineer with over 9 years of hands - on experience in Software Development for Embedded Products using C and C++ on Linux.
Extensively worked on developing SIP stack for VoIP phones (WLAN & Wired).
Thoroughly understood and implemented the stack compliant to RFCs 3261, 3262, 3263, 3264
Implemented various call server specific features like Microsoft LYNC: Better Together over Ethernet (BToE), Call Park, Music on Hold (MoH) and ININ redundancy.
Modifications to the SIP stack to Interoperate with various call servers such as Microsoft Lync, ININ, Asterisk, Shoretel, Cisco Call Manager, CCME and Pingtel.
Extensively worked on USB speaker phone running Linux kernel in the following areas:
Boot loader, embedded file system,
Linux kernel customization for Boot time optimization, image size reduction
Updater in U-boot
Integration and Stabilizing Audio Codec drivers.
Application development using Linux ALSA sub system
Hands on development experience in network protocols like SNMP, UPnP, NTP
Proficiency in Linux IPC, Socket Programming and TCP/IP stack.
Familiarity with Wireshark, JIRA, SVN, SIPp, SIPInspector and crucible
Expert knowledge in solving the interop issues.

PROFESSIONAL EXPERIENCE:

Senior lead engineer

Confidential

Responsibilities:

Generally Linux kernel image would be compressed and while booting it de-compresses on it's own.
This process was taking significant time hence, we used a un-compressed kernel that saved time.
Reduced the image size by removing the unwanted kernel configurations
Used quiet boot argument and pre calibrated lpj values
U-boot was copying the kernel image from flash to Pre-defined location on RAM, performing checksum calculations and then moving the whole image to another location (kernel entry point).
Optimized such a way that from RAM directly copy the image to kernel starting point and then jump to the location.
Used DMA while copying the image from NAND flash to RAM
Optimized standard memory functions (memcpy and memmove) to operate on words rather bytes.

Senior software engineer

Confidential

Responsibilities:

Software engineer

Confidential

Responsibilities: