From: route@monster.com
Sent: Tuesday, June 14, 2016 5:16 PM
To: hg@apeironinc.com
Subject: Please review this candidate for: IMS Integration
This resume has been forwarded to
you at the request of Monster User xapeix03
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Derek Lim 19002 Dallas Parkway, APT #823, Dallas TX 75287 |
972-658-7020 |dongryul.lim@gmail.com OBJECTIVE A
results-driven, customer-focused, analytical Senior Software Engineer seeking
a challenging technical track career in an application development
environment. SUMMARY Strong
in design and integration problem solving skills with experience in the
followings: §
Telecommunication o
LTE, WCDMA, WiFi, RF Repeater,
DOTS(Digital Office Timing Supply), GPS IP-PBX(VoIP) §
Processor o
Intel 8051, Atmel
89C55/32/128/2560, MC68302, MPC860/8260(Power PC), PC302/312/333(ARM),
RT3052(MIPs) §
Embedded OS o
VxWorks, Linux §
Protocol o
UART(RS232, RS422, RS485), SNMP,
ASN.1, TCP, UDP, SIP, I2C, TWI, SPI, USB §
Language o
Assembly, C, C++, Java, VHDL,
Quick Basic, Visual Basic §
Compiler o
IAR, GNU Tools, AVR, Motorola §
Display o
LCD, VFD, FND §
Debugger o
GDB, TRACE 32 §
Lab Equipment o Oscilloscope,
Digital Multimeter, Digital Power Supply, Signal Generator, Frequency
Counter, Spectrum Analyzer EDUCATION §
Bucheon University o
March 1997 – February 1999 o
Electrical Engineering §
Gyeonggi Mechanical Technical High
School o
March 1993 – February 1996 o
Electronics EXPERIENCE Nexelone,
Inc. Carrollton, TX (September 2013 – Present) §
September, 2013 – Present o
Development for wireless
internet router §
Developed wireless router with
RT3052(Ralink SDK). §
Developed BSP to make JFFS2 part
on flash memory of system and support various peripherals. o
Developed the WCDMA macro cell
detector and cell phone detector §
Developed SIB/MIB scheduler, RRC
with CCPU protocol stack §
Developed BSP to support various
peripherals. Accuver
America, Inc. Plano, TX (March 2013 – August 2014) §
March, 2013 – Present o
Analyzing LTE parameters for cell
measurement o
Project leading with server
product which is used for cell measurement Minieum
Networks, Inc. Plano, TX (October 2010 – March 2013) §
January, 2012 – Present o
Development and test for LTE §
Complete
installation/configuration of EPC Server and LTE evaluation board using
eNodeB. §
Confirm DL/UL throughput of eNodeB
that attached on EPC by following LTE Call Procedure. o
Solve OS(Embedded Linux) issues o
Development for Linux device
driver o
Support interface to IMS Core
Network with SIP §
Complete
installation/configuration of IMS Core Network Simulator. §
Support interface between SIP of
NodeB and IMS Core Network Simulator. o
SON(Self-Organizing Network) §
Develop S/W library for SON
feature that collects various information from Macro Signal such as RSSI,
RSCP, CPICH, Ec/No, MNC, MCC, CellID, LAC, RAC, PSC and Neighbor List to
reduce RF interference. §
Analysis SIB/MIB on UMTS/GSM using
QXDM as sub-procedure of system scanning §
2010 – January 2012 o
Development for L1 layer for WCDMA
base station based on picoChip modem chipset o
Development for IP Router for
network systems o
Design and development for BSP o
Design and development for RF
calibration/control tools as Linux Application §
Configure UARFCN, controlling
TX/RX gain, checking TX/RX RF power. SyncCom
Co., Ltd. Seoul, Korea(September 2004 – July 2010) §
2007 – January 2010 o
TRS Repeater Controller Software
Development o
3G Repeater Software and GUI
Development o
Completed development process of
Android basic application for its embedded platform. o
Solar power plant monitoring
system software development o
VoIP foundation IP PBX software
development §
Developed VoIP with Asterisk
to operate on embedded linux system using IP PBX. §
Developed features for text
messaging on VoIP to support sending text messages to an internal extension
number using LAN line by modifying SIP. §
Developed web server for
configuration of IP PBX. §
2005 – January 2007 o
FCT Equipment Control Unit
hardware and software Development which were used for testing finished
electronic products. o
DOTS (Digital Office Timing
Supply) System software and state controlled
remote access GUI development which generate and supply various
high-precision synchronous and frequency – implemented with VxWorks. §
Developed entire software such as
OAM, NMS Interface, SNMP Interface with functionalities including: Digital
PLL Block, Clock Receiver Block, Timing Generation Block, Clock Distribution
Block, Alarm Report and Management Block, GPS handle Block, statistics,
Management, Maintenance CLI (Local & Remote). o
North American RF Repeaters,
WiBro Repeaters, Fiber-Optic Repeater Controller software
and GUI development with Visual Basic o
Developed network module
that helps local equipment to be monitored from a remote location. o
RF Amp, WiBro Amp Controller
software and GUI development with Visual Basic §
2004 - January 2005 o
Developed VDSL Modem
which is used for Japanese o
Developed NTP (Network Time
Protocol) Server System software and remote monitoring tools. MaxonCIC
Co., Ltd.Seoul, KoreaAugust 1995 - September 2004 § 2000
– February 2004 o
IS-95C, CDMA2000, IMT2000 base
station device, network synchronization stage software development which are
being used at the mobile base stations o
Nominated by MaxonCIC Co.,
Ltd for Engineer of the Month hosted by the National Research Institute. § 1999
– February 2, 2000 o
Signal transduction T1/E1
Converter software Development so Nortel transmission equipment could be
used in the Korean national network. o
Compact Clock feeder of Module
Type hardware and software development § 1995
– February 1999 o
Developed reference clock module
that supplies high precision clock to 2.5G/10G/FLC-D high-speed optical
transmission equipment. ARMY EXPERIENCE §
The Korean Army o
October 1, 1998 – September 31,
2001 INTERESTS: Tennis, basketball, traveling, reading, movies Achievements: o
2012 Ultimate Tennis League 4.5
Mixed Doubles Champion.
Dallas, Texas o
2011 Ultimate Tennis League
4.5 Singles Champion.
Dallas, Texas o
June 2009 – June 2010
Incheon, Korea §
Tennis Club(ILT): Branch Manager o
Branch office manager for Incheon
Division of the national online tennis club of “ILT” with more than 50,000
members o
Operated and managed a tennis club
in Incheon Municipal Court Gajwa, an Incheon Division of “ILT” |
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