Portfolio

api.data.gov

Tech Stack

  • NodeJS
  • Lua
  • Rails

ATF eRegs

Tech Stack

  • Python
  • Django
  • Backbone
  • Postgres
  • ElasticSearch
  • Cloud Foundry

HMDApolis

  • Designed & implemented a board-game style webapp with two front-end devs and a designer over a weekend
  • Stored and served HMDA data (>50 million records) utilizing carefully tweaked Postgres indices
  • Configured and maintained demo server, a particular challenge given the amount of data we queried

Tech Stack

  • Python
  • Flask
  • Backbone
  • Postgres
  • CentOS

CFPB's eRegulations

  • Served with a brilliant team (4 devs, 2 design, product owner, PM) in 2-week sprints, with two major rollouts
  • Led the bureau in best practices: code commits, reviews, coverage, tests, PEP8 standards, and UI testing (Sauce Labs)
  • Co-wrote a Python parser for regulations (plaintext + XML) with lxml, PyParsing, python-constraint, and inflection
  • Derived hierarchical structure from a stream of paragraph markers using constraint programming & limited heuristics
  • Discovered citations (including implicit context) and definitions (including scope) via parser combinators & regexes
  • Automated regulation compilation (from final rules) by tokenizing, normalizing, and processing amendment texts
  • Created multiple output options for these regulation trees, including an API, the file system, and even a git repository
  • Designed and later migrating a data storage API from Flask + Elastic Search to Django + Haystack, MySql, and Solr
  • Helped develop a Django+Backbone-based regulation viewer, heralded as “user-friendly” and “magnificent
  • Cited by the White House in the “Second Open Government National Action Plan”, December 5, 2013
  • Using cachegrind & jmeter, optimized many segments of a quite-intensive rendering pipeline to minimize load times
  • Configured and maintained demo and continuous-build environments as well as Travis-based automated test scripts
  • Shared code via pull requests (Github); code built using pip, virtualenv, buildout, node.js, and django-south

Tech Stack

  • Python
  • Django
  • Backbone
  • MySql
  • Solr
  • CentOS

Communicart

  • Despite starting with limited Rails experience, contributed many new features and refactors
  • Researched and implemented libraries such as pundit (authorization) and paperclip (attachments) to bring new features with minimal effort
  • Refactored the white-labelled application from ubiquitous switch-cases to implicit path selection (e.g. via dynamic dispatch)
  • Fostered a software engineering mentality within the team by discouraging special cases and limiting code complexity
  • Served as interviewer for several usability studies with many of our users

Tech Stack

  • Rails

Idea Box

  • Designed & implemented an Idea Scale-like platform for Django on a team of 3 devs and 2 designers in two weeks
  • Utilized Solr's more-like-this API and stop-word configuration to reduce the number of duplicate submissions
  • Our code was eventually picked up for a bureau-wide rollout of the application, saving a great deal of money

Tech Stack

  • Python
  • Django
  • MySql
  • Solr
  • CentOS

Peace Corps Donations Platform

  • Successfully replaced an existing, ColdFusion under-the-desk server with a fault-tolerant, Django-based, EC2 environment
  • Led backend development among a team of varying size ranging from four to eight
  • Implemented callbacks and hand-offs with the pay.gov payment processor
  • Helped navigate a waterfall-driven client, agile developers, and a user-driven research team through to a project launch
  • Contributed to upstream projects, adding needed features and Python3 support
  • Focused on user security, GPG-encrypting data at rest and deleting it as quickly as possible
  • Tweaked our Cloud Formation setup based on feedback from load tests
  • Reviewed and sought review from my peers via pull requests. All changes were seen by multiple pairs of eyes
  • Project released to support President and First Lady Obama's Let Girls Learn initiative

Tech Stack

  • Python
  • Django
  • SASS

OMB Policy Library

Tech Stack

  • Python
  • Django
  • NodeJS
  • React
  • Postgres
  • Cloud Foundry

Mapusaurus

  • Worked on a capital-Agile team: three devs, two designers, product owner, and scrum master using two-week sprints
  • Parsed and loaded decennial census tract shapes, population metrics, and HMDA loan applications into Postgres/GIS
  • Using an API-first approach, pre-rendered shares as GeoJSON and separated statistic and shape endpoints
  • Served data via a Leaflet-driven UI; data loaded as needed to allow for infinite exploration without high load times
  • Configured and maintained demo server, integrating with Jenkins for continuous deployment and Travis for testing

Tech Stack

  • Python
  • GeoDjango
  • Leaflet
  • PostGIS
  • CentOS
© C.M. Lubinski 2008-2018