Engineer Development
Thomas DiFilippo
Jackson Heights, NY *****
acx9ce@r.postjobfree.com
Summary
Senior Python Engineer specializing in: RESTful APIs, Distributed systems, Financial feed handlers & analytical services, Testing, High performance network services and Automation of any task which is repeated
Quick Learner with excellent written and oral skills and the ability to get the job done
Engineering roles: Individual Contributor, Lead or Project Engineer, Senior Systems Engineer, Systems Architect
Agile development utilizing JIRA or White Task board to track Stories, Sprints, Backlogs and Impediments
Fostering cooperation through Mentoring, Pair Programming, Code reviews and Design reviews
Experience with geographically diverse teams in US West Coast, India, England, France, Germany and Tokyo
Lead architect of scalable distributed services utilized for successful projects
Skills
Programming
Languages: Python, C/C++, Fortran, Assembler, VB, Java
Operating Systems: Linux, Unix, Windows, VxWorks, Solaris, RMX, Embedded RTOS
Python Packages: pyro, asyncoro, argparse, logging, socket, requests, twisted, socketserver, netfilterqueue
json, pyxml, pyinstaller, py2exe, glob, shutil, psutil, csv, xlrd, xlwt, virtualenv, pip
pyodbc, Psycopg, sqlite3, unittest, mock, boa, wxpython, wxglade, boto
Database: MSSQL, PostgreSQL, MySQL, Oracle, SQLite
Web Back-end: Django, django-rest-framework, Flask, JSON, flask-restful, RESTful API, JSON
Web Front-end: HTML, CSS, JavaScript
Math: Matlab, Simulink
Networking
Messaging: Broadcast, Client/Server, Publish/Subscribe, Message Broker
Middleware: RPC, TIBCO Rendezvous / EMS, CORBA
Interfaces: Sockets, Winsock, RMX, VxWorks, Driver Development
Protocols: TCP, UDP, HTTP, DNS, FTP, SNMP, ARP
Tools
Source Control: SVN, CVS, GIT/GITHUB, MKS, Perforce, PVCS
Debuggers: GDB, Idle, pdb, Visual Studio, Python Profiler
Network Analyzers: Wireshark, Tcpdump, Intel Network Analyzer
Professional Experience
Derby LTD., Hicksville, NY December 2015 – Present
Consultant
Design and implement a back-end RESTful API, Database and business logic to support an internal facing Web application
Microsoft SQL Server utilized to support login, storage, manipulation and utilization of large data sets
Monitor and tooling of web services
Development of Python automation test to consume, benchmark, verify and validate RESTful API services
Skills: Python, Django, Linux, MSSQL Server
Cablevision, Hicksville, NY September 2015 – October 2015
Consultant
Provide POC web-site to replace legacy in-house admin web sites to configure customer cable systems
Design and Development of a network automation tool which retrieves diagnostic data in cable set-top boxes. Utilize asyncoro Python asynchronous sockets library to support parallel network processing. This version queries 250,000 clients within 5 minutes, to replace a Perl script which required 60 minutes to complete.
Developed a Python package to support thousands of simultaneous SSH requests utilizing parallel processing.
Skills: Python, Django, Flask, Linux, Windows, SSH, Sqlite3, Co-Routines, Asyncoro / Asyncio.
Merrill Lynch, New York, NY March 2015 – August 2015
Consultant
Design and develop Equity Risk Correlation reports written in Python, developed in the BOA Quartz environment.
Utilize the BOA grid computing software which executes Python code sequences on thousands of x86 cores located at data centers in geographically diverse sites
Development of Equity correlation regression analysis to insure that newly developed correlation engines provide the same results as the previous iteration
Development of unit tests with the mock library to provide test case coverage
Utilize proprietary BOA Sandra database on the Equity correlation engine
Skills: Python, Linux, Windows, Quartz environment, Sandra Database, Agile development
Globecomm Systems, Hauppauge, NY April 2014 – February 2015
Consultant
Design and develop an automated distributed test platform to scale and test the CMS through RESTful APis
Linux RPC clients developed to verify system performance, check content integrity and insure proper usage
Utilize Linux IPTABLES to support packet truncation, packet loss and insure packet integrity
Measure performance and report results through comparison of packet receipt with database integrity using Postgres and Microsoft SQL Server
Actively discovered dozens of bugs, determined system lock, multi-thread and performance issues
Skills: Python, Linux, TCP/IP, Windows, RPC, REST API, TDD, JSON, XML, Postgresql, Agile Development
Parker Hannifin, Hauppauge, NY December 2003 – April 2013
Senior Project Engineer / Systems Engineer
Responsible for the Avionics Test Lab for the Fuel Gauging and Inert Gas Control Systems utilized on Airbus A380 and A350 aircraft
Utilize the A380 and A350 hardware System Integration Benches (SIB), provided by TechSat of Germany, to interface with the control systems and simulation of inter-connected aircraft sub-systems
Design, develop and integrate distributed real-time acquisition software, simulation engines and GUI in Python to provide the verification and validation of aircraft signals to provide evidence of flight readiness to the FAA
Designed and Developed a Python based distributed network interface between multiple workstations, test stations and the SIB using RPC (Remote Procedure Calls) to communicate between the distributed computing systems and actual hardware which supports fuel gauging of the aircraft
Provide an external test API to support development of Python scripts for automated testing
Developed and maintained a Python based GUI to input and output session data, simulation values, scripting sessions and data values using Microsoft SQL Server and Access
Developed a Python and C++ based simulation of several Airbus Aircraft sub-systems using Matlab and Simulink
Regression, unit tests and functional tests to verify software development
Skills: Python, TCP/IP, Avionics, Linux, Windows, C++, DOORs, AFDX, CAN Bus Analyzer, Tcpdump, Matlab, MSSQL
Derby Fragrance, Plainview, NY September 2002 – December 2003
Consultant
Developed several Ecommerce Web-sites for a Fragrance startup
Utilized HTML and OSCommerce based Web-sites
Utilized JavaScript for Menu creation, Email Links, addition of user based contests, Banner ads and additional web content to increase conversion rate
Significantly increased daily traffic, and number of sales per day through the management of Search Engine Optimization and sponsored
Increased daily sales to 500 per day
Skills: OSCommerce, PHP, HTML, CSS, JavaScript
Bloomberg L.P., New York, NY August 2000 – August 2002
Senior Systems Engineer
Responsible for the maintenance of the Bloomberg L.P. routing data switch which maintains TCP/IP connections between the customer terminals and the Bloomberg servers
Developed embedded C/C++ software using TCP/IP and proprietary network protocols to bridge between the Bloomberg side of the network and the Internet / Intranet side of the network
Converted complete application from VXWorks to Redhat Linux, providing Linux systems code and builds
Skills: C, TCP/IP, Proprietary Network Interfaces, Linux System Builds, Distributed Architecture
ESpeed/Cantor Fitzgerald, New York, NY January 2000 – July 2000
Consultant
Develop customer login daemon, responsible for the login of all customers, requiring a high level of security
During catastrophic network crashes, the system required up to 30 minutes to re-connect all clients
Using TCP/IP client/server connections and multi-thread queues, catastrophic re-connection time was minimized from 30 minutes to less than 1 minute while maintaining secure login and security requirements
Skills: Linux, TCP/IP, C++, Multi-tasking, Unix System Debugger
RTS Wireless, Plainview, NY January 1999 – January 2000
Consultant
Develop C/C++ Paging Server Platform for DOS, Windows and NT Platforms
Develop extended CTASK, a multi-thread kernel to support memory above 1 Mbyte in a Protected mode real-time environment using the MS-DOS operating system for file and device access
Provided many required paging protocols including TAP, SNPP, SMTP and WCTP
Support and develop tools to debug system crash logs, and provide post mortem debug capabilities
Skills: DOS, DOS Operating Extensions, Windows/NT, C/C++, Paging Protocols, Assembler, Interrupt Handlers
Moore Capital Management, New York, NY January 1998 – January 1999
Consultant
Develop custom Data feed Parsers to connect Moore Capital to Reuters, Knight Ridder and Bloomberg
Provided the ability for all required feeds to be sent via satellite to off-site use for the Moore Capital platform
Developed code in C, C++ on an embedded multi-tasking proprietary Operating System
Software connected via TCP/IP in a client / server architecture
Skills: Embedded development, C, C++, TCP/IP, Multi-tasking, Distributed system
Bloomberg L.P., New York, NY January 1996 – January 1998
Consultant
Development of Front End Ticker Project which replaced a composite feed with individual feeds for all exchanges
Development of all communications handlers for distributed real-time protocol feeds
Convert data feeds to a neutral Bloomberg format via TCP/IP Multicast to the Bloomberg server computers
Ported OSF TCP/IP protocol to an Intel network card to offload all TCP/IP communications to the network board
Development of custom HDLC, SDLC and TCP/IP feed handlers
Developed code in C, on embedded RMX III Single Board Multibus II systems
Software connected via TCP/IP in a client / server architecture to support over 2500 data feeds with over 250,000 Bloomberg Customers, to provide Bloomberg with real-time data feed support
Development provides the highest performance real-time data in the industry for Bloomberg L.P
Skills: Embedded development, C, RMX III, TCP/IP, Multi-tasking, Highly Distributed systems
Intel Corporation, Islandia, NY August 1985 – December 1995
Staff Systems Engineer
Provided consulting services to a large variety of Intel customers, supporting most of Intel’s OEM products.
Customers include Bloomberg, Reuters, Grumman, KEPCO, 3Com, Silicon Valley Group
Top rated Systems Engineer at Intel based on total revenue and customer ratings
Skills: Embedded Development, C, RMX, PLM, Assembler, Network, Multi-Tasking, Distributed Systems, Bit Bus, TCP/IP, Oracle
Reuters/IDR, Melville, NY January 1983 – August 1985
Engineer Lead for Advanced Development Group
Development and deployed the Reuters Color Graphics Terminal, the first Analytical Workstation built for Reuters.
Lead programmer from initial prototype on Intel Multibus I SBC written in PLM, Asm86 and RMX
Lead developer and designer of the US Dollar Index Feed Ticker, which is traded at FOREX
Skills: C, PLM/86, ASM/86, RMX 86, Linker and Locate tools
Education
BS degree, SUNY at Stony Brook, Stony Brook, NY (1981)
High School degree, Bronx High School of Science, Bronx, NY (1977)
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