Languages 

C/C++Ruby
Java/SE/ME/EEPerl
C#XML/HTML
Objective-C/C++SQL
Objective-C++Assembly
JavaScriptVHDL/Verilog HDL
ScalaPHP
Python 

Frameworks & Libraries

DjangoNode.js
.NETOpenGL
EJBOpenCL
SpringBoost/STL
EclipseOpenSSL
HadoopAjax
OSGiMatlab
jQuery

Platforms

Linux/embedded LinuxRealTIme OSes (RTOSes)
OSX/iOSQNX
BSDeCos
AndroidOS20/OS21
Windows/Windows Phone/Windows CE

Architectures

ARMDSP C5xxx/C6xxx
MIPSAVR/AVR32
Cortex8051
x86/AMD64CUDA
SH-4PIC/PIC32
PowerPCFPGA ( Altera / Xilinx )

Databases

RelationalNoSQL
OracleApache Cassandra
DB2Apache Accumulo
SQL ServerRedis
SQLiteMongoDB
PostgressTempoDB
MySQLApache CouchDB

Mathematical modeling

Signal processingControl and fault diagnosis
Multivariate statisticsAudio and video processing
OptimizationDiscrete mathematics
Machine learningFinite element method
Numerical methods

Networking Protocols

Wireless software stacks ( WiFI, ZigBee, Z-Wave, Bluetooth)
TCP/IP protocols
DOCSIS/DSL/GSM protocols
HTTP/REST/SOAP/SPDY
VoIP / Video / UPnP / DLNA
SSL
Protocol buffers

Cloud

Amazon AWS
Windows Azure
Force.com
Google Cloud Platform (App Engine, Cloud Datastore, ..)
CDN integration (Level3, CloudFront, Akamai, …)
Big Data (MapReduce)

Hardware

Digital & Analogue system design
Chip design
RF Hardware design (h/w – s/w co-design)
High-speed digital interfaces: DDR2/3, HDMI, SATA, Gigabit Ethernet, USB2/3
Wireless communication: IR, RF4CE, WiFi, Bluetooth
Power supply, interfaces
 
Hardware prototyping
PCB layout (2/4/6-layer expertise and experience)
Mechanical metal & plastics design
Electromagnetic compatibility (EMC) trouble-shooting
Electrostatic Discharge (ESD) / Surge protection design
ESC & Thermal design
Cost optimised electronics design
Production ready design
 
Hardware reliability verification
Systems, technology & component validation
OEM and ODM auditing
 
Low-level Linux / Assemblers / Low-level C programming
High speed interface apps (USB, Eth 10/100M/1G, Wi-Fi, HDMI, PCI, SATA)

Other skills

Security (CA/DRM, anti-piracy, data encryption, …)
A/V decoding & processing (MPEG2, AVC/H.264, MP3, AAC, DTS, AC3, …)
Distributed computing
Parallel computing
Web browser engine development (Gecko, WebKit, Ant)
Digital TV (DVB, ATSC, RDK, …)