Software Engineer

Developed a Saas application in Ruby on Rails for planning and implementing industrial, master-keyed locking systems. The application provides a web interface for designing the key schema, and generates the key bittings and pinning charts used for assembling the lock hardware to match the master-key schema. Designed and optimized the algorithms used for all aspects of the application. Implemented at-rest data encryption and other security features. Integrated Stripe payments and background processing with redis/sidekiq.

Technologies and tools used:

• Ruby 3 / Rails 7
• ChatGPT AI
• PostgreSQL, RSpec
• Redis, Sidekiq

• HTML5, CSS3
• Javascript / jQuery / Ajax
• regular expressions
• awk, sed

• git / GitHub
• bash scripting
• Stripe payments

Lead Software Engineer

Enhanced PHP application obtained through merger with another bank. Integrated multiple data feeds, including personnel data, and Active Directory information between the two bank's data systems. Updated application to better utilize modern browser features, (e.g. SendBeacon) & discontinue use of deprecated features (e.g. ajax calls on page unload events). Maintained extensive set of SQL Server stored procedures. Planned and coordinated cross-department projects with other engineering groups. Directed and assisted offshore developer.

Technologies and tools used:

• PHP, HTML, CSS
• Javascript/jQuery, AJAX
• XML, json

• DBeaver
• SQL Server Management Studio
• Chrome JS debugger

• git, GitHub
• regular expressions
• awk, sed, find, bash scripting

Lead Software Engineer

Designed a solution to migrate the Mayo Clinic's internal PHP application for provisioning system resources from a mainframe/Sybase implementation to a web service API for searching user data. The API is built on Informatica MDM. The updated application brings increased consistency and decreased redundancy to Mayo's data sources. Also served as technical lead for the implementation phase.

Technologies and tools used:

• PHP
• REST
• json

• Informatica MDM
• libcurl
• regular expressions

• Postman API client
• git

Senior Web Application Engineer

Designed and developed new features for IBM's cloud services in PHP using a custom ORM based on Zend and Oracle database. We made extensive use of SOAP APIs, but also provided RESTful interfaces for IBM's cloud services. Scaling and performance were key considerations for this large platform as a service application. We used agile scrum for project management, and I used TDD (test driven development) for my coding work. My most recent work involved adding new file & block storage functionality, such as securing iScsi storage devices by limiting access to specific hosts, and improving backup storage services.

Technologies and tools used:

• HTML5, CSS3
• PHP
• Oracle

• REST and SOAP APIs
• Postman API client
• PHPUnit

• git, Jira, Confluence
• Zend(PHP framework)
• Test Driven Development

Ruby on Rails Application Developer

Contributed to the Willo Health web application used by families to organize caregiving tasks and exchange documents (e.g. prescription schedule) for elderly parents. Implemented a new front-end, based on designer comps, and the backend features (including the data models) needed to support the new design. Replaced the old, Twitter Bootstrap based markup with clean HTML5 for use with the 'Bourbon Neat' grid framework.

Technologies and tools used:

• HTML5, CSS3, SVG images
• Javascript/jQuery
• Twitter Bootstrap
• Sass, Haml

• Ruby on Rails 5, Postgres
• git, GitHub, Heroku
• RSpec, Continuous Integration
• Omnigraffle (diagramming)

• TextMate, vim
• Kanban PM using Trello
• Slack, Flowdock for collaberation

Web Application Developer

Developed a web application used internally by the bank. The application is written primarily in Javascript (including jQuery) with a small Openresty / Lua backend for delivering the daily data updates. It is used to provide rate quotations for home equity lines of credit based on location. Data is provided daily to the application in xml format, which is transformed using awk, sed, and Lua, prior to being loaded by the web client. The data transformation makes heavy use of regular expressions, and the application uses just in time data loading via AJAX to provide a responsive user-interface.

Technologies and tools used:

• HTML5, CSS3
• Javascript/jQuery, AJAX
• XML, xmllint / xpath

• Nginx/Openresty with Lua
• svn (aka subversion)
• Adobe Creative Suite

• awk, sed, bash scripting
• regular expressions

Senior Web Application Developer - PHP and Ruby on Rails

Designed and implemented Service Oriented Architecture, web-based applications for the health care industry with public and administrative portals. SEC3URE provides credential management for hospital staff, and is written in Ruby on Rails, uses Postgres, and is served by nginx on AWS. A separate CRM component, and credential management for health care vendors are written in PHP, use MySQL, and are served by Apache. Integrated third-party web-services, including Zuora's subscription and payment processing, and Backgrounds Online criminal background checks. I received commendations on the quality and quantity of my work products.

Technologies and tools used:

• HTML5, CSS3
• PHP, Ruby on Rails
• Postgres, MySQL

• Javascript/jQuery
• REST and SOAP APIs
• Postman API client

• git, BitBucket, Jira, Confluence
• CodeIgniter (MVC framework)
• Test Driven Development

PHP Web Application Developer

Developed websites and web-based applications for enterprise and small business providing e-commerce and productivity functionality. Applications include content management systems, corporate extranet, store locators, photo galleries, custom calculators, online stores with real-time shipping quotes using XML web services and real-time payment processing.

Technologies and tools used:

• HTML4/5, CSS 2/3
• PHP, MySQL, Apache
• Javascript / jQuery
• AJAX

• XML / SOAP / REST
• Adobe Createive Suite
• Google Geocoding APIs
• ImageMagick

• awk, sed, bash scripting
• regular expressions
• crontab
• UPS, PayPal Integration

Software Engineer

Developed Proof of Concept application to enable communication between chemistry applications through an Informix relational database.

Consistently designed innovative tools to achieve goal of Continuously Releasable (compiler) Software, including a tool to identify and isolate source code changes that introduced regressions. Conceived and designed tools for multiple development groups to share test runs, using automated component level isolation techniques for identifying components introducing regressions, reducing testing resource costs by 70%, and greatly improving component validation turnaround times. I was often selected to develop specialized tools for use within the compiler group, and acquired a reputation for automating software production tasks. I received recognition from management for my presentation skills.