Open To Work
Khalid Dekkar
Snohomish,WA
Summary
Senior Engineer with robust experience in wireless signal processing and software development. Developed and optimized signal processing algorithms, ensuring high performance and reliability in complex systems. Led incident response and collaborated with cross-functional teams to enhance network efficiency and customer satisfaction.
Overview
15
15
years of professional experience
Work History
Senior Engineer & System Administrator (NTAC Nokia OSS)
T-MOBILE
01.2017 - Current
- Designed and implemented troubleshooting processes for RAN, Core, and transport domains using Nokia OSS.
- Conducted deep-dive analysis of alarms, KPIs, and performance counters to identify root causes of wireless issues.
- Developed and validated OSS integrations with RAN and Core systems, optimizing performance and reliability.
Telecom Firmware Test Engineer
OSSIA INC.
BELLEVUE, WA
10.2014 - 02.2016
- Conducted R&D in Wi-Fi technologies to enhance wireless performance.
- Developed over 300 Hex test scenarios to identify and resolve driver issues under UNIX.
- Performed testing for Wi-Fi, Bluetooth, and ZigBee standards to ensure compliance and efficiency.
SDET Consultant
Microsoft
, WA
10.2013 - 02.2014
- While working on the Protocol (GCF) Certification Test, assigned to support the new Windows phone software (OS) development and debugging for GCF certification using different racks such as R&S to make sure new software releases could pass all the GCF protocol test requirements according to 3gpp specifications.
- Testing involved many core chip design and many software releases.
- TFS (CDMA2000 1X, CDMA2000 EVDO, UMTS, and LTE)
- Experience on Automation of Mobile Handset Conformance testing using the following platforms: Anite SAS, Agilent 8960, Anritsu 8480c/8470, Spirent 8100, Anite 9000 LTE Sequencer, and R&S CMW500/CMU 200.
- Utilized QXDM, Debug Mux and Mobile Analyzer.
- Experience with protocol analyzers and able to analyze the performance or issues during lab testing, interoperability test and field trials.
- Utilized Spy Tracer (Layer 2 and Layer 3 Tracing Tool).
- Experience with Artemis (3G Firmware tracing and Layer 1), CADET IQ, QMICM, Wireshark, QPST, and QPCAT.
- Excellent knowledge of the following UE side protocols: RRC, NBAP, RANAP, RLC, MAC, TCP/IP
- Domain: Radio Resource management (RRM) – RNC, eNodeB LTE L3 and L2, UE (dual mode) – WCDMA and GSM protocol stack.Exposure to air interface, network signaling and L1 (Physical Layer), Layer 3 protocols of the UE (mobile side) of WCDMA, GSM.
- Wireless domain in testing of various mobile handset protocols and applications. Selenium concepts, Selenium Framework, Java Concepts, Sprint and Scrum.
- Completed API testing in Selenium.
- Applied knowledge of Qualcomm NV, Pics, and Picks to improve testing accuracy.
- Mobile testing chipset and hardware testing of WP8.
- Mobile testing for wifi interoperability with various access points.
- Hands on experience in handling the test equipment in the vendor and customer’s lab.
- Experience capture wifi over the air logs (use any over the air sniffers).
- Configuration and execution of Windows logo tests for wifi/Bluetooth.
- Knowledge of IP-related protocols in the wireless industry, including Diameter, SIP, RTP, TCP/IP, UDP, IPSEC, DNS, and general routing and switching protocols.
- Executed wifi technology certification integration testing (802.11 a, b, g, n) in accordance with 3gpp specifications, utilizing Anite, Anritsu, R&S, and Spirent RF/system level test equipment.
- Expert testing UICC/GCF/CCF/RRM/Conformance testing in lab environment.
Senior Software Engineer in Test
Jasper Wireless
, WA
02.2013 - 08.2013
- Completed project within a team to create a platform for AT&T “AIO” Services.
- Established a track record of functional and load testing GSM network elements. Expert ixia traffic generator
- Extensive knowledge and hand on Spirent iTest - Landslide Integration
- In-depth knowledge of testing processes and technologies.
- IXIA network simulators Knowledge and experience
- Experience with various scripting languages (perl, shell.Java).
- Knowledge of some GSM network elements for voice, data and text (packet core network, LTE, GGSN, PGW, Voice Mail, HLR, SMSC, MMSC, Camel,Teklec) and interfaces.
- Very Good knowledge of IXIA network simulators
- Gained expertise in devices and components to enhance testing efficiency.
- Knowledge of various operations topics such as VPNs, load balancers, network routing and protocols.
- Effective testing participant in network teams, with strong interpersonal and communication skills.
- Worked on in field testing with handsets.
- Executed testing of call flow scenarios for voice, data, SMS, MMS, and Voice Mail/Visual Voice Mail.
- Reported problem details on network elements with service techs.
- Setup Jasper system lab.
- Completed Jasper network system test plans and execution.
- Automation using SeleniumDrive ,PHP,CQ5 to enhance Jasper website and platforms.
Senior Software Engineer in Test
AT&T
10.2012 - 11.2012
- Contributed to master data management (MDM) project, enhancing data organization and access.
- Conducted thorough testing of mobile applications across multiple platforms, ensuring quality and performance.
- Utilized automation tools QTP and Selenium to streamline testing processes and improve test coverage.
- Experience on testing Web UI based on Java script and html.
- Testing application on Android/ iPhone/BB/HTML5 Java based browsers.
- Real time detecting bugs in applications.
- Utilized a master data management tool for data organization.
Senior Software Development Engineer in Test
AT&T Mobility
Bothell, WA
08.2011 - 09.2012
- Worked very closely with Project Managers and Developers on a daily basis.
- Managed and tested cloud data sharing applications on Elastic Computing Cloud, ensuring functionality and performance.
- Developed test cases from JRD’s and Wireframes.
- Experience with automated testing tools.
- Experienced with windows drivers (installation, upgrading, removal, and certification).
- Experienced with mac drivers testing.
- Firm understanding of windows registry and device manager.
- Participated in daily triage meetings with vendors to align on project updates and resolve issues promptly.
- Knowledge of multiple components and load balancing.
Senior Test engineer/Network Tester
AT&T, Inc.
03.2011 - 08.2011
- Conducted testing in AT&T lab environment, focusing on automation processes.
- Troubleshot LTE 4G networks daily using Android devices to ensure optimal frequency performance.
- Experienced in SS7, Access7, RF Technology, based on GSM/CDMA/3G/4G/LTE Network.
- Operated IXIA network simulators for testing and validation of network performance.
- Utilized Anite software for R&S testing and analysis.
Bluetooth A2DP Tester
Isoftstone/ HTC
02.2011 - 04.2011
- Collaborated daily with developers to troubleshoot FTS:BT issues, improving system reliability.
- Issue discovering in UMTS, GSM and GPRS environments.
- Test cases specification and execution.
- Interfaced with audio and touch screen technology to ensure seamless user experience.
- Applied Bluetooth A2DP profile to improve device connectivity and optimize audio quality.
- Experienced on WP7.Android CDMA. Android BTL Devices.
- Knowledge OF 3GPP/HSPA+,CDMA/EV-DO/4G, UMTS/4G /LTE.
QA Software Testing Engineering
iSoftStone
Seattle, WA
11.2010 - 01.2011
- While engaged at Microsoft on the Financial Microsoft WP7 Program Management Project:
- Developed financial documents and enforced program rules through analysis of reimbursement requests.
- Executed test plans and cases, and documented manual testing using Quality Center in client-server environment.
- Implemented test automation processes to enhance software efficiency using PHP and Node.js.
- Participated in all phases of project life cycle, including requirement gathering, analysis, design, development, implementation, testing, and quality standards.
Software Tester Engineer
iSoftstone
09.2010 - 11.2010
- Contributed to T-Mobile project by evaluating devices for performance and reliability.
- Executed testing on 3G/4G WCDMA/GSM android base and telecommunication devices to ensure functionality and compliance.
- Developed test cases and automated testing processes using Quality Center for client-server and web-based applications, including defect logging.
Senior Lab Tester engineer _Emulator Consultant
Alcatel One
, WA
05.2014
- While working on the Protocol (GCF) Certification Test Automation, assigned to support the new Alcatel phone software (OS) development and debugging for GCF certification using different racks such as R&S to make sure new software releases could pass all the GCF protocol test requirements according to 3gpp specifications.
- Executed testing on core chip designs and multiple software releases to validate functionality and compliance.
- TFS (CDMA2000 1X, CDMA2000 EVDO, UMTS, and LTE) CMAS, IPV4, IPV6 IMS.SIP.Volte
- Experience on Automation of Mobile Handset Conformance testing using the following platforms: Anite SAS, Agilent 8960, Anritsu 8480c/8470, Spirent 8100, Anite 9000 LTE Sequencer, and R&S CMW500/CMU 200.Arnitsu.
- Utilized QXDM, Debug Mux and Mobile Analyzer.
- Experience with protocol analyzers and able to analyze the performance or issues during lab testing, interoperability test and field trials.
- Utilized Spy Tracer (Layer 2 and Layer 3 Tracing Tool).
- Experience with Artemis (3G Firmware tracing and Layer 1), CADET IQ, QMICM, Wireshark, QPST, and QPCAT.
- Excellent knowledge of the following UE side protocols: RRC, NBAP, RANAP, RLC, MAC, TCP/IP
- Domain: Radio Resource management (RRM) – RNC, eNodeB LTE L3 and L2, UE (dual mode) – WCDMA and GSM protocol stack.Exposure to air interface, network signaling and L1 (Physical Layer), Layer 3 protocols of the UE (mobile side) of WCDMA, GSM.
- 2G and 3G device carrier validation testing
- Conducted GSM, UMTS, and HSPA protocol testing to ensure adherence to industry standards.
- SIM Functionality and Interoperability Testing.
- Data Performance Testing
- Performed network integrity tests to verify system performance and security compliance.
- Carrier validation of unconventional and emerging devices
Skills
- Wireless signal processing
- Debugging techniques
- Systems integration
- Performance optimization
- Technical reporting
- Test automation
- Embedded systems
- Project research
Languages
- French
- Arabic
- English
Personal Information
Citizenship: US Citizen
Timeline
Senior Engineer & System Administrator (NTAC Nokia OSS)
T-MOBILE
01.2017 - Current
Telecom Firmware Test Engineer
OSSIA INC.
10.2014 - 02.2016
Senior Lab Tester engineer _Emulator Consultant
Alcatel One
05.2014
SDET Consultant
Microsoft
10.2013 - 02.2014
Senior Software Engineer in Test
Jasper Wireless
02.2013 - 08.2013
Senior Software Engineer in Test
AT&T
10.2012 - 11.2012
Senior Software Development Engineer in Test
AT&T Mobility
08.2011 - 09.2012
Senior Test engineer/Network Tester
AT&T, Inc.
03.2011 - 08.2011
Bluetooth A2DP Tester
Isoftstone/ HTC
02.2011 - 04.2011
QA Software Testing Engineering
iSoftStone
11.2010 - 01.2011
Software Tester Engineer
iSoftstone
09.2010 - 11.2010