Summary of Qualifications

Fifteen years experience with high throughput relational database design and implementation. Twelve years of experience with Perl and MySQL on the Linux/Apache (LAMP) platform. Two years experience with Python. Focused on secure, reliable, data-driven problems. Successfully launched a popular and profitable email filtering application on the web.

Database

• MySQL Server
• Database planning and design, efficient indexing
• Security and administration
• Hardware requirements planning
• Database installation and upgrades
• Replication configuration and maintenance
• Backup, archive and disaster recovery
• Data mapping and migration
• Performance monitoring and tuning

Software

• Perl, Python, Regular expressions, familiar with many more (C/C++, PHP, VB)
• Object oriented and threaded software design
• Public Key Infrastructure (PKI)
• Practical security implementation using hashes (crypt, MD5, SHA)
• IP (TCP and UDP) Network programming
• Unit testing
• Clearly written code with in-code documentation (docstrings)
• Database integration: transactions, locking, deadlocks, connection pooling.
• Django web framework / database modeling
• Twisted internet server framework

Web

• HTML 4.x
• CSS 2.x
• Image optimization
• Javascript (AJAX)
• Avoiding XSS (cross site scripting) and other pitfalls
• Image optimization, manipulation and design
• Performance optimization

Email

• SMTP, Internet message format, MIME and it's encodings
• Knowledgeable in how different clients and servers handle different messages
• Expert of email filtering technologies - what's permissible and what isn't. How will email filters react to a sender or message?
• Contacts at various large email-receiving sites and law enforcement agencies.

System administration

• MySQL, Apache, Postfix, Qmail, Sendmail, Bind, djbdns, rbldns, Squid, Cyrus IMAPd.
• Developed custom DDoS defenses for numerous real-world attacks.

Work experience

Short term contract: November-December 2009
• Large Django project serving a high-volume website
• Helped (try to) finish a behind-schedule project
• Added features, fixed bugs, found unconventional solutions to "intractable" problems.
• Cleaned up and organized - reduced duplication of functionality, generalized features, fixed existing problems.
• Recent references available

Quorum.to: June 2009-present
• Developed a full database driven email-filtering system.
• 1M+ row datasets with 1000 rows/minute updated.
• Web payment authorization
• Web database interaction.
• Multi-threaded DNS server to publish filtering rules and update database.
• Postfix plug-in acts as TCP server to postfix and dns (udp) client to database.
• Multi-threaded groomer process to perform automated testing and database update.
• Designed and implemented visual design (images, css, html).

Cisco Systems, Inc, nee Ironport Systems: September 2003-June 2009
• Policy advocate and ongoing development of SpamCop.net
• Developed highly scalable database-intensive applications in Python.
• Participated in code reviews for my own code and that of others. (Reviewboard).
• Researched different mail filtering strategies by mining huge collections of spam and ham (non-spam) as well as data hosted in MySQL databases.

Communication Billing Technologies: June 1995 - June 1997
• Implemented data processing and reporting using Microsoft Access and Oracle.
• Implemented (with one other developer) a complex Java applet: a market data terminal. Displayed stock quotes, real time and historical data in various graph forms.
• Maintained the wire closet, interact with the telco.
• Purchased and maintained all hardware: Sun and PC servers and desktops running Windows, Linux and Solaris (nee SunOS).

Master Computer: 1990 - 1995
• Repaired hardware, diagnosed and repaired software problems.
• Managed the service department, designed forms and work-flow.
• Created tools and procedures to increase efficiency.
• Reported to owner and influenced purchasing decisions.