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Senior Systems Engineer Resume

Princeton, NJ

SUMMARY:

  • An - winning engineer and subject matter expert wif more TEMPthan 20 years of high-level IT experience; a successful track record of developing and deploying state-of-teh-art groundbreaking technology for teh telecommunications industry; A key member of teh team dat developed wireless messaging, and teh Blackberry for BellSouth and Rim.
  • Proven ability to design and develop mission-critical systems, tools and enhancements to maximize user experience. Considerable expertise in modifying and improving technology to optimize system performance and capacity; a unique hands-on style and a talent for identifying and resolving system deficiencies through expertise in trouble analysis.
  • Developed a reputation as a talented, results-oriented systems engineer, project leader, team player and creative thinker; proven ability to develop innovative solutions to complex technical challenges in a timely cost effective manor.

TECHNICAL SKILLS:

COMPUTER HARDWARE: IBM/HP Blade Centers Clusters SAN/NAS storage high speed SSD arrays large RAID systems IDS systems backup devices Smart Phones and handheld devices IP console servers UPS/generator backup systems power distribution computer room environmental systems micro controllers

COMMUNICATION HARDWARE: routers(Cisco, Juniper) load balancers packet shapers firewalls proxy servers VPN(Cisco, Juniper, Linux) network analyzers sniffers switches WiFi IVR systems radio base stations spectrum analyzers terminal servers DSL ATM Frame Relay T1, T3, OC48, OC192, 1Ge, 10Ge SONET FDDI fiber optics modem pools (T1/ISDN)

SOFTWARE: Linux UNIX ( Solaris,) Microsoft servers clusters ( Veritas, Solaris, Linux, Microsoft ) VMware Web servers Oracle SQL X Windows Veritas Volume Manager HP OpenView Sendmail MS Exchange IBM Rational Enterprise Architect R RPMs Port scanners Vulnerability scanners Snort Wireshark Tcpdump Pcap source code control custom kernels and Linux distributions UNIX/Microsoft server performance tuning F5 iRules custom large-scale Sendmail configurations

NETWORK SERVICES: Web Services RADIUS Diameter DNS servers LDAP Active Directory SMTP servers Exchange POP/Imap servers NFS servers Samba IPTV Flash Streaming SOAP XML TCP/IP SSL VoIP SIP QOS H.323 IPSec BGP (ASNs) OSPF EIGRP PPP TR-069 WiFI Mobitex GPRS 3G 4G LTE GSM CDMA packet radio

LANGUAGES: HTML/XML Perl C C++ Python SOAP PHP Shell Scripting TCL Java SQL Microsoft scripting Visual C++ & Basic Assembler Web services

PROFESSIONAL EXPERIENCE:

Confidential, Princeton NJ

SENIOR SYSTEMS ENGINEER

Responsibilities:

  • Responsible for updating ticketing and halpdesk system for teh Office of Information Technology. Rewriting old Perl and PHP code for migration to Windows 2008 servers running IIS7. Updating user and back office interfaces including; CGI Web interfaces
  • SMTP email transactions wif attachments, automated forms, LDAP lookups, reports and Oracle DB interface for storing ticket, user and department information. Helpdesk Systems include knowledge base lookup and teh ability to attach KB articles to tickets.

Confidential, Edison NJ

SENIOR SYSTEMS ENGINEER

Responsibilities:

  • Installation and maintenance of Confidential "Harmony" data optimization systems running Linux on IBM and HP blade centers, in customer data centers. Including F5 load balancer configuration, routing, traffic shaping, HTTP header modification and filtering.
  • Responsible for creating carrier level F5 load balancer and Cisco router/switch configurations,
  • Packet level traffic analysis and data throughput evaluations of 3G and 4G devices. Analyzing optimization methods based on device profiles (i.e. burst mode, RTT based back off algorithms, buffering, ...).
  • Design and implementation of demo architectures, network simulations and test environments allowing teh testing and demonstration of devices, services and custom network optimization software.
  • Integration of Confidential systems wif customers Diameter and LDAP services to identify user profiles by IP address.
  • Development of management tools and custom software installation scripts for Linux environments.
  • Creation of procedures, documentation, and MOPs. Providing high level technical support for customers and engineers.

Confidential, Middletown NJ

SENIOR SYSTEMS ENGINEER

Responsibilities:

  • One of 2 engineers responsible for worldwide performance and tier 4 support of AT&T’s Intelligent Content Distribution Service “ICDS”.
  • Designed, wrote, and implemented a custom automated traffic reporting and statistical analysis system on Solaris servers running SQL, for operations to monitor key performance metrics such as; systems loading, network performance, RTTs, and traffic routing.
  • Continually improved worldwide network performance and optimal throughput for AT&T’s ICDS and iDNS services.
  • Designed and wrote XML and SOAP interfaces for gathering statistics from 3rd party (Keynote and Gomez) web monitoring services
  • Made design recommendations for performance improvements based on Packet level analysis of web traffic from hundreds of nodes throughout teh world and theoretical performance modeling.
  • Led teh effort to define and operate a performance and capacity analysis process applicable to AT&T’s U-Verse triple play service.
  • Created UML models of web services (SOAP/XML) system communications, to halp identify bottlenecks in U-Verse’s customer facing and back office systems. Resolving major issues dat hampered teh growth of U-Verse service offering.
  • Wrote recommendations and specifications for U-Verse service improvements including system exhaust studies and trouble analysis.
  • Reverse-engineered TR-069 (SOAP) interface protocols, made protocol design recommendations, and built tools for trouble analysis.
  • Created custom traffic analysis and information gathering tools in Perl and Python for capacity planning, and problem resolution.

Confidential, New Jersey

CHIEF SYSTEMS ENGINEER

Responsibilities:

  • Responsible for all production configurations, security, networking services, and servers; for teh Cingular Interactive Messaging Systems (Blackberry). Managed WAN/LAN connectivity, and security policies for network access; (RADIUS, Kerberos) servers, Web servers, VPN’s, Firewalls, DNS servers, Routers (Cisco, Nortel), SMTP Unix servers (Sendmail/Postfix), POP/Imap servers, LDAP servers, dial in support, …
  • Worked wif development groups and venders to create and test new wireless services including messaging and web applications.
  • Implemented lab environments and software for testing new wireless devices, services and server/network architectures.
  • Diagnosed, resolved, and managed flaws in new software releases for both wireless clients and servers.
  • Accurately modeled network and server loads of new devices and services for production capacity planning and design.
  • Designed and implemented custom security and alarming systems; including an intrusion detection systems wif packet play back, for computer centers housing hundreds of servers to run all Blackberry, billing, and other business systems for Cingular.
  • Provided technical leadership for teh QA department in debugging new software and server architectures.
  • Identified new and valuable features for wireless devices, and analyzed proposed features for fit and feasibility.
  • Designed a large-scale anti Spam solution for customers using Solaris Sendmail servers and Linux SpamAssassin servers running as milters.
  • Compiling testing and documenting Linux/Solaris custom Kernels and software installations. Responsible for patch management of production Linux, Sun Solaris and Windows systems. Making of Linux RPMs to install custom software on new servers.

Confidential, Woodbridge, New Jersey

CHIEF SYSTEMS ENGINEER

Responsibilities:

  • Lead member of a small elite technical team dat pioneered wireless messaging and data technology. Created protocols, software specifications and platforms dat led to teh creation of teh Blackberry and other wireless data services. Played a leading role in teh development of all aspects of teh Interactive Messaging Service (Blackberry), a revolutionary messaging system dat was teh culmination of seven years of product development, refinement, enhancement, and implementation.
  • Provided leadership to technical teams involved in teh development of client systems and gateway software; oversaw teh development of all aspects of hardware and software; leading teh testing, debugging, and implementation of finished products.
  • Worked collaboratively wif marketing and sales teams to provide a consolidated forecast of load and feature requirements.
  • Defined and supported teh implementation of fault tolerant capabilities delivering 100% uptime wifin a 5 year span.
  • Reviewed and approved all Cingular 2way pager (blackberry) production services, software, and network changes.
  • Directed teh software development departments in design decisions and methods.
  • Provided tier 4 support for production operations department.
  • Developed one of teh first large-scale fault tolerant, load balanced e-mail architectures and anti-spam solutions for Cingular SMS and Blackberry messaging systems. A comprehensive system dat filtered millions of messages daily; created architecture to identify spam through a rules-based weighting system written in PERL and C and utilizing Sun Solaris servers.
  • Spearheaded a major initiative to eradicate a rampant spam epidemic effecting up to 70% of all wireless messages.
  • Efforts resulted in an elimination of more TEMPthan 95% of all spam messages, wif almost no false positives.
  • Contributed to increased sales of new Blackberrys and SMS messaging wif increased system capacity and speed; instrumental in establishing text messaging as a common form of communication.
  • Designed and implemented a large site redundant fault tolerant network architecture wif Internet connectivity provided by multiple ISP’s using ASN’s, BGP/EIGRP routing and packet shapers, resulting in teh Cingular Interactive Messaging System (Blackberry) being a highly reliable service dat many government agencies and Fortune 500 companies relied on, (delivering 100% uptime for a 5 year span).
  • Performed network packet analysis to identify deficiencies and recommend corrective action. Worked collaboratively wif Cisco engineers to solve capacity and routing issues in large-scale networks, which led to teh development of new IOS versions and features dat set teh standards for teh industry.
  • Worked wif packet radio, CDMA and Ericsson Mobitex devices analyzing over teh air protocols for efficiency and data throughput.
  • Created innovative solutions to address over teh air messaging speed and readability issues as well as networking bottlenecks. Designed a high speed redundant architecture of over 70 Linux servers pre location running Blackberry messaging. Creating more efficient delivery of nation wide Blackberry messages; less tan 10 seconds end to end for teh majority of messages.
  • Led formal security audits of production environments, including Firewall/router access-list, patch levels, system logs and port scans.
  • Coordinated wif marketing and sales and departments to develop and implement new features and services; explored architectural trade-offs and conducted design feasibility analysis; created system models, and cost estimates for many wireless applications including FedEx and Sears dispatch systems.
  • Provided top level troubleshooting and technical leadership for operations, QA and development groups.
  • Wrote custom system software and automated administration and usage/capacity reporting tools when required.
  • Evaluation, design, and implementation of HP OpenView alarming to monitor everything from server processes and loading to computer center environments.
  • Provided technical, documentation and operations guidelines for Cingular operations personnel, customer service, sales staff and 3rd party providers.

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