Debashis Dutt
San Jose,USA
Summary
Dynamic Principal Software Engineer with extensive experience at Qualcomm Technologies, specializing in WLAN driver architecture and network optimization. Proven track record in leading cross-functional teams, integrating machine learning for enhanced performance, and driving significant improvements in connectivity power and latency. Adept at technical leadership and system debugging, delivering impactful results.
Overview
26
26
years of professional experience
Work History
Principal Software Engineer/Manager
Qualcomm Technologies
San Jose, USA
06.2011 - Current
- Architect / lead / designer of WLAN driver data-path for 5 generations of WIFI solutions from 802.11n to 802.11bn, supporting speeds from 150 Mbps to 10 Gbps – leading a team of more than 30 people across the globe in this capacity.
- Led design / architecture of WLAN driver to deliver product throughput KPI’s with optimal power and latency across multiple chipsets and multiple classes of product family.
- Re-architected SW to optimize CPU/memory and cache usage for performance and latency path.
- Led design & implementation an elaborate & rich telemetry framework from WLAN SW & HW, currently used in ML training & inferencing, debugging and feature enablement decisions for multiple product lines.
- Led the architecture decision to adapt RF Tree & Auto-encoder based ML model for advanced traffic classification on the mobile handset leading to reduction of >15% connectivity power, and > 20% average latency reduction for low latency traffic.
- Drove the deployment of NN model for boosting WLAN transmit power to the maximum in keeping with regulations.
- Currently leading an exploration of more advanced models (Transformers / GRU’s) for increasing efficiency and reducing training times.
- Have worked with HW team to propose several HW changes for next generation SOC’s to improve overall WIFI performance and power (TSO, FISA etc.).
- Currently leading an exploration of more advanced models (Transformers / GRU’s) for increasing efficiency and reducing training times.
- Have driven significant AUC reduction of the next generation WIFI SOC’s, by driving a SWHW design which scales all the way from the premium tiers to the lowest tiers of products.
Staff Software Engineer
Brocade Communication Systems
San Jose, USA
01.2007 - 05.2011
- Lead a team of 3 engineers to architect, design and implement Linux Driver for Brocade Converged Network Adapter.
- Designed / Implemented advanced Networking offload features for the driver such as RSS (Rx Side Scaling), software LRO/GRO (Large/Generic Receive Offload), Dynamic Interrupt Moderation, Tx side QOS (through multiple Tx Queues).
- Lead engineer to drive profiling and optimization and enable line-rate SW performance.
- Primary author / maintainer of Brocade’s Link Layer driver in upstream kernel.
Member of Technical Staff
Silverback Systems Inc.
Campbell, USA
09.2004 - 12.2006
- Designed and implemented a FreeBSD (4.5) based IPv6 stack for a complete TOE IPv6 driver.
- Provided full support for running dual stack (both IPv4 & IPv6) on iSNAP card. Solved several issues faced as a result of dual stack support.
- Co-designed and implemented an Embedded Control Plane on the iSNAP2110 (MIPS based) processor for connection setup, management and configuration for Silverback’s TOE.
- Implemented a PAL (Platform Abstraction layer) for easy driver portability across platforms.
- Acquired by Brocade
Software Engineer
Nokia Networks
Mountain View, USA
08.2000 - 07.2004
- Designed, developed the socket interface for the Presto TCP/IP stack and profiled the same for optimal performance & scaling for Broadcom 1250 MIPS processor, as well as for IPC for inter-card applications.
- Designed and implemented 'persistent' & 'highly available' ACL & RMAP modules for IPv6 over BSD IPv6 stack.
- Implemented several IPv6 network applications & protocols for inter-card functionality.
Senior Software Consultant
Cisco
Glasgow, UK
12.1999 - 07.2000
- Implementation and integration of certain SNMP modules from provisioning and statistics.
Education
M.Sc.Tech - Applied Physics (Optoelectronics)
University of Calcutta
IndiaB.S - Physics (Honors)
St Xavier’s College
IndiaCertificate course - Object Oriented Programming and C++
I.S.I
IndiaSkills
- WLAN driver architecture
- Network optimization
- Telemetry analysis
- Machine learning integration
- Embedded design
- Cross-team collaboration
- System debugging
- Product management
- Technical leadership
- Technology evaluation
Platforms
MIPS & ARM based embedded platforms, x86/IA64 family, Custom WIFI & N/W ASICS, Android, LE & other Linux variants / FreeBSD / QNX / VxWorks
Accomplishments
Super Qualstar Award 2018 For Top Performance Within WIFI Team
Timeline
Principal Software Engineer/Manager
Qualcomm Technologies
06.2011 - Current
Staff Software Engineer
Brocade Communication Systems
01.2007 - 05.2011
Member of Technical Staff
Silverback Systems Inc.
09.2004 - 12.2006
Software Engineer
Nokia Networks
08.2000 - 07.2004
Senior Software Consultant
Cisco
12.1999 - 07.2000
M.Sc.Tech - Applied Physics (Optoelectronics)
University of Calcutta
B.S - Physics (Honors)
St Xavier’s College
Certificate course - Object Oriented Programming and C++
I.S.I