Jessica Chang
Cell:408-***-****
ac964p@r.postjobfree.com
Sr. SOFTWARE ENGINEER
Working knowledge of applied security, secret and public key cryptography, RSA, PKI,
SSL/TLS, SAML, and related Java APIs and libraries (BouncyCastle)
Knowledge of Networking Protocols (TCP/IP, HTTP, SMTP).
Solid UNIX and Linux administration and programming skills.
Excellent debugging and problem solving skill.
Resolve major issues and critical problems or provide workaround solution of production
environments.
Able to define and analyze business requirements as well as work with third party
software/techniques.
Excellent communication skills, adaptable, and able to work on multiple projects in fast-
paced environment.
TECHNICAL SKILLS
Skill and tools: TCP/IP, SSL, SNMP, HTTP, SMTP protocols. PostgresSQL, UNIX ODBC, Microsoft Visual C++, gdb, dbx, WorkShop, Vtune, JFree Chart, SQL, Database tool, WireShark, tcpdump
Languages: C/C++, JAVA, Shell Script, PERL, HTML,PHP
Operating Systems: LINUX, UNIX, Windows
Misc: Network socket programming; Multi-threaded application development; (Server/Client based) Application protocols development;Knowledge of Spark framework.
WORK EXPERIENCE
Intertrust, Inc Sunnyvale, California
Sr. Software Engineer, 2012 ~ Present (Java Programming)
· Design and implement process status monitor module using hibernate, Spring
Framework.
· Design and implement major projects. Programs integration and performance tinning.
· Implement remote certification generation framework, which using Tomcat,
AtiveMQ, Spring, Camel, hibernate... in the project.
· Implemented report query module using maven, spring, hibernate, postgres
· Design/Implement backed billing system using RESTFUL framework.
· Implement/maintain certificate management tools.
· Program performance tuning and comparison.
· Change File style cryptographic keystore into database keystore. Using Java security
and Bouncy Castle libraries.
· Knowledge of hardware crypto security modules (HSM) and cloud HSM.
· Troubleshooting and resolve the issues for internal operation group and customer.
· Knowledge of Spark framework.
Mirapoint, Inc Sunnyvale, California
Sr. Software Engineer, March 2010 ~ 2012 (Java/C Programming)
Backend webmail/Calendar debugging and troubleshooting in C programming language. Using debugging tool gdb to exam the core dump files or attaching live processes to debug the programs. Also, using debugging tools strace, valgrind and Wireshark sniffer to exam networking traffic to help on debugging when needed.
Working on the middle layer between our back end mail, calendar servers and new front end Web Mail client, an open source project, called zimbra. In this project we replace zimbra backend servers with our own. It enable our product to provide 3 different web clients through zimbra, such as standard web mail client, mobile client and Ajax client and other fancy features.
Trend Micro, Inc. (www.antivirus.com), Cupertino, California
Sr. Software Engineer, July 2007 ~ Aug. 2009 (Java Programming)
Designed and implemented ISP portal tool using web Service and database
technology. Deliver the task in short period of time.
Implemented distributed Internet URL crawling system for research purpose.
Implemented URL and attachments fetching modules to collect URL links and
attachments from SPAM emails for research purpose. Improved capacity of a single
processing node from 4 million to 8 million emails per day.
Sr. Software Sustain Engineer, Nov. 2004 ~ June 2007 (Java, C++/C)
Responsible for diagnosis and resolution of product misbehavior in live customer
environments.
Successfully resolved the tough problems utilizing dump file and source code
analysis, debug log review, and communication with the customer, 2nd level support,
and product teams.
Software Engineer, 1998 ~ Oct 2004 (C++/C, Java)
Major contributor to Interscan Viruswall, WebProtect, and Web Security product
lines
Interscan Web Security (C programming)
Designed and implemented product‘s SNMP agent, using net-snmp module
Designed and implemented per-user Virus Scan policy
Sole contributor to porting effort from Solaris to multiple Linux platforms
Implemented PhishTrap tools, a suite of utilities and classes for the construction and
enforcement of blacklists of known malicious domains.
Interscan WebProtect (Java Programming)
Designed and implemented a web server to simulate client-server test environment
and predict potential failure points
Conducted program analysis based on the test results of simulation to verify the
problems
Designed and implement HTTP file download agent, product configuration using
JavaBeans
Designed and implemented a virus scan server to process filtering requests from
Network Appliance's ICAP (Internet Content Adapter Protocol) enabled caching web
proxy
Interscan VirusWall ( C/C++ programming)
Implemented a multi-threaded CVP (Content Vectoring Protocol) sever which works
with Check Point's firewall (FireWall-1). This server gathers the HTTP, SMTP, FTP
Internet traffic from Check Point's firewall (FireWall-1), and applies virus filtering
against the content. This yielded 20% better performance vs. scanning with original
CVP server design.
Accomplished Virus Scanning share library.
Designed and developed mail traffic graphic report generator, product information
update agent (TVCS agent), and file download agent by using HTTP protocol
with/without basic authentication scheme in client-server environment
Implemented web based configuration with CGI and Java programs for InterScan
related products. Created CGI and Java programs served by Apache web server to
provide a user interface for InterScan service configuration. The configurations
included Anti-SPAM, Content filter, Virus Scan policy, and Service/Virus logs
viewing on the browser
Implemented product installation and packaging scripts for Linux/UNIX platforms
EDUCATION
Graduate Study in Computer Science, Michigan State University
M.S. in Computational Mathematics, Michigan State University,
Michigan
B.S. in Mathematics, Tamkang University, Taiwan
ACCOMPLISHMENTS
Author of "Constructing Linux Web Server" (Chinese Edition), Publisher, Dr. Master Corp.
Translator of "Internet Security for Business" (Chinese Edition), Publisher, Unalis Corp.