Senior Backend Engineer

Professional Summary

Hard driving technologist with 20+ years of experience. A highly adaptable quick study focused on the delivery of quality software in a timely manner.

Programming Languages: Python, Java, C/C++, Html, Boost, Javascript, SQL, CSS

Technologies: Django, Flask, SQLAlchemy, Alembic, Swagger API, Spring, MySQL, MongoDB,

Driver Development: 802.11, flash, GigE, NDISWAN, T1/E1, SCC, I2C, HDLC, RFID

Protocol Development: HLS playlists, TCP/IP, UDP, LWAPP/CAPWAP, MobileIP, DTLS, MGCP, ATM,    

Systems and Software: Docker, Kubernetes, Ubuntu, Centos, Monta Vista, VxWorks, IOS, OSX

Tools: Jenkins, Scons, Doxygen, Monit, , JTag, Cobertura, VMWare, Confluence, Github, Jira

Version Control: Git, Mercurial, Clearcase, Perforce, SVN, CVS, MS Visual SourceSafe, SCCS

Testing: Boost Unit Test Framework, Nosetest, Doctest, xUnit, Python integration scripts.

Professional Summary

Mya Systems, Inc.

August 2017 – Present

Principal Software Engineer   

• Lead Core Engineering team to guide architectural design decisions
• Lead project to implement multitenancy with django-tenant-schemas
• Facebook Messenger Integration with profile capture
• Text2Apply profile capture, validation
• Implemented MYA-HMAC-SHA256 to enforce HMAC API key authentication
• Preprocessors for ingestion of CSV processing with location, phone validations
• S3 AWS event auto ingestion, validation, and processing of CSV files for campaigns
• Enforced Authorization Django permissions with groups for recruiters, candidates, admins
• Integrated ATS adapter services with iCIMS, Bullhorn, Avature, JazzHR ATSs
• Customized Email Templates with SendGrid integration

Rinse

April 2016 – August 2017

Principal Software Engineer   

• Lead project for Vendor priority recommendation system for valet load-in process
• Facebook Connect, Signup, Pixel and offline conversion tracking API handling
• Added Order, Discount creation/update forms for customer details internal pages
• Created ML infrastructure using closest constrained K-means for optimal route creation
• Enhanced customer designation of audience type for better analytics for Facebook API
• Created Referral discount credit customer-facing web pages and backend infrastructure
• Add Lead, Lapsed Customer, Nones, Active customers to Facebook audience management
• Use Proximo to proxy facebook API requests through to 1 whitelisted static IP address
• GoogleApi for address canonicalization and location determination
• Chi-squared test for vendor garment miscategorization
• Segment integration replacing MixPanel for marketing analytics
• New NPS SMS survey to gauge customer promoter scores using Twilio and celery, SciPy, Segment, Pandas, etc.

EverString

Nov 2015 – March 2016

Principal Software Engineer   

• Chrome Extension to interact w/ LinkedIn and SalesForce to help prospect for leads.
• Similar companies Swagger API endpoints to get accurate semantically similar companies.
• Admin interface for Ad campaign management SaaS UI to configure Mongo connections.

Ubiquiti Networks

June 2014 – October 2015

Senior Software Engineer      

• Full-stack implementation of WLAN scheduler on UI, controller, access point.
• Architected integration of Facebook Wi-Fi captive portal redirect workflow.
• Addressed security concerns adding defenses for CSRF, ClickJacking, Content sniffing.
• Build Django cross-site referrer to simulate malicious attacks on the Java controller site.
• Interact w/ forum users to address hundreds of tickets to stabilize existing product lines.
• Work w/ UX and Android developers to prototype the Theme Manager for VOIP phones.
• Technologies: Java, Spring, Javascript, Backbone, Mongo, SCSS, Grunt, Android

Aruba Networks

Nov 2013 – June 2014

Senior Software Engineer      

• Defined Analytics Location Engine’s persistence strategy with Hadoop/Spark clusters.
• Architected and implemented fingerprinting of RSSI for location predictions.
• Travel to do due diligence evaluations on potential acquisition candidates.
• Build out the scale and performance testing suite with AP Simulators on VMWare R620 Dell servers.

RedLaser / EBay                    

Sr. Software Engineer

• Designed a shopping analytics front end charting web appliance using Django / Python
• RESTful API interface to Cassandra and Hadoop backend databases
• MySQL glance and queued query configuration admin interface
• Leveraged RickShaw D3 charting and Detail-Wrap bootstrap admin libraries

 Solum, Inc.

Aug 2012 – Aug 2013

Senior Lead Software Engineer         

• Architected a farm management website with GeoDjango, PostGIS, Leaflet, Mapbox, Angular, django-storages on Amazon Web Services cloud platform.
• Developed and integrated with OpenLayer Editor to edit multi polygons associated with fields.
• Developed Trigger.io based iPhone and Android app for GPS location upload of measurements.
• Designed and improved schemas related to soil measurement and management.
• Designed and developed Qt-based Windows/Linux clients that controlled a transfer and dispense robots using Digital I/O and Misumi single-axis robots.
• Designed and improved Qt-based Windows/Linux clients to measure, control and upload soil measurement equipment.
• Developed controls and improvements on Nitrate measuring spectrum analysis system that takes in soil samples, processes it, take measurements, and upload data files for processing.
• Setup and administered Jenkins CI development system for code analysis, build, and integration testing for every commit to GitHub.
• Administered AWS EC2 instances with boto, fabric scripts to create binary replicating PostgreSQL servers with a periodic cron job that create backup snapshots of EBS volumes.
• Migrated company repositories from Jira’s SVN to Github.

RGB Networks

Senior Lead Software Engineer         

• Designed and developed the Ad Workflow Engine that takes the HLS playlist stream of manifest files via HTTP Put to insert Ad chunks in the resulting stream.
• Parsed text-based CCMS config files and playlists using boost Spirit qi/karma
• Used SOCI C++ library to interface with PostgreSQL and sqlite3 to interact with Django.
• Developed Thrift API to interact with Django and a redirection engine on another host.
• Create timers and cleaners to manage and control timings within the system using libevents.
• Installed, configured, and managed Jenkins along w/ plugins to build, unit test, integration test, static analysis, code coverage for continuous integration software development process.
• Developed Management and control plane software written in C++ and Python as a backend to JavaScript GUI.
• Interfaced with existing common API interface to develop management and control infrastructure to interface with new GUI front end with Thrift being the new API transport scheme.
• Investigated various open-source solutions to interface with Django, SQL, and present solutions for evaluation and analysis.

Cisco Systems

Mar 2001 – Nov 2010

Technical Leader        

• Lead new Ambassador project to achieve greater scalability to enable 5000 APs and 50000 clients for HREAP AP and home APs.
• Resolve Endian issues between host control plane processor and data plane line card.
• Co-Lead NGWC project defining wireless client authentication, mobility control between legacy wireless module and IOS.
• Developed AP Counting Licensing model for the new product lines.
• Wrote Wireless ASIC requirements documents to define the functionality and features of the Doppler ASIC that will change the landscape of wire and wireless integrated switches.
• Emulator and ASIC bring up to allow client association, authentication, and mobility.

Education

BS in Electrical Engineering from UC Berkeley

Patents

Available Upon Request