Kwynn Buess, software engineer

See my newest / next resume, started in May, 2023.


Software Engineer, freelance, 2010 - present; projects below

law office digital assistant web application, 2016 - present

(10 hours a week from 2016 - 2018; 5 hours a week from 2019 - present)
  • My web application has made a human assistant unnecessary.
  • Stack: originally LAMP (Linux Apache MySQL (MariaDB) PHP, SQL). I am moving to MongoDB. Hosted on Amazon Web Services (AWS) EC2, Ubuntu Linux.
  • Implemented a very complex, very customized, JavaScript-heavy user-interface (UI) for the timecard / billing hours screen
  • Wrote an API and bot to transfer billed hours from the client's system to a 3rd party billing system. I used cURL HTTP POST commands to simulate a browser, and used DOM / XML processing on the HTTP responses.
  • Credit card forms and interaction with the processor's API
  • Wrote one form to coordinate court dates with a calendar and client notifications via email and SMS. Used AWS SES and SNS.
  • Wrote a sophisticated mail merge-like feature to quickly generate client (snail) letters.
  • Wrote an audio processing feature to assist analysis of 911 calls and calls from jail (WAV and MP3 files), in part using ffmpeg.
  • Daily scripted backups to AWS S3
  • Code in git / (private) GitHub

NFT contract, 2022, March - May

  • Wrote a Solidity NFT (ERC-721) minting contract with a whitelist, free-mint list, and sales date limitations
  • Metamask web connection and interaction (buttons) to mint
  • Metadata processing script in PHP
  • Created OpenSea account to display images and allow resales
  • Deployment with Hardhat and Alchemy; validated code on the Rinkeby Ethereum blockchain with Etherscan (There is a marketing delay. Deployment to mainnet is planned for July, 2022)
  • Code in git / public GitHub (see repo link above)
  • Other keywords: Ethereum, Ether, ETH, Web3, ERC-721, crypto, cryptocurrency

Bible quiz, web application, 2022, March - April

  • Wrote 80 - 90% of the features from scratch--from the admin feature to enter the quiz questions to a live, simultaneous contestant quiz
  • PHP, MongoDB, Linux VPS / VM - I build up the system from a basic Ubuntu image
  • Moved contact form email from sendmail to the PHPMailer SMTP class
  • Python Selenium library to use a third party login API

project codename Numbers, sporadic work over many years; dates for these sub-projects below

  • Made DNS A record changes to comply with web host changes (2022, April)
  • Changes to make code compliant with PHP 8.0 (2021, December)

MariaDB error fix - 2021, October

  • diagnosed a MariaDB insertion error while proverbially looking over the client's shoulder on a screen share. MariaDB was enforcing SQL NOT NULL for HTML form fields that were not present.

"bulletin board" install - 2021, September

For this entry I am avoiding several keywords and using much older terms because I do not want to use the technologies again. Also, this is the same client as the flight API project (starting April, 2020). I get repeat business sometimes.

  • built up an AWS EC2 Ubuntu Linux system and installed a "bulletin board" system
  • used AWS SES (Simple Email Service) SMTP for account activation emails and such

Cardano Ada cryptocurrency public stake pool creation / administration, 2021, August - September

  • Ubuntu Linux and AWS EC2 system administration to run the stake pool / node and connect it to the blockchain. A stake pool is a proof of stake equivalent to a m i n i n g node (intentionally "blurred" because I would rather stick with proof of stake)
  • Used extra AWS EBS blocks to store copies of the blockchain.

Asterisk VOIP / SIP / voicemail system, 2021, July - August

  • The requirement was a voicemail system that could record a message of arbitrary length--much longer than the 10 minutes that many providers impose.
  • I compiled and configured Asterisk VOIP / SIP software on an Ubuntu Linux AWS EC2 instance.
  • Used Amazon / AWS Chime to connect a phone number with my recording server.

LAMP (Linux Apache MySQL (MariaDB) PHP) development - project codename Felina; 2021, June

  • Solved a PHP / MySQL / MariaDB bug while proverbially looking over the client's shoulder on a screen share
  • Made roughly 20 changes to the PHP code to bring it from PHP 5.x to 7.4 compliance, especially the mysql versus mysqli deprecation and removal.
  • Created git / GitHub repositories for the code. This was made slightly more complicated by having to step around cache files.

Debian Linux sysadmin, 2021, February and May (2 separate, short sub-projects)

  • Analyzed port usage and built firewall rules (ufw) to better secure the server. This included limiting incoming traffic to an IP range / subnet.
  • Also some Apache web server admin to improve security
  • Updated the system to Debian 10 (Buster)

political activism website mockup, 2020, June

  • Some of the most picky CSS I've ever done. I list this to demonstrate that I can get paid (a bit, at least) to do some artistic CSS

airfare search APIs, 2020, April - May

This is the same client as the "bulletin board" project in Sept., 2021. I get repeat business sometimes.

  • A proof of concept PHP web application to interact with the / Skypicker API, Skyscanner API, and the TripAdvisor API

8-channel television broadcast recording, 2019, December - 2020, February

This is the same client as the phone privacy project (a few months earlier) and codename "Jump" (occasional work going back to 2013).

  • Built an Ubuntu Linux server recording 8 channels at once. I researched the video capture cards, antennas, and software needed to make it all work.
  • Used ffmpeg to convert video from ts (video transport stream) format to mp4

Android privacy project, 2019, January - September (intermittent work over that period)

  • Unlocked bootloader and installed LineageOS on Android phones with no Big Evil Goo apps and no Goo account needed.
  • That involved a lot of research into which phones would allow that.
  • Used ADB / Android Debug Bridge to install apps without Goo P l a y (intentionally "blurred")
  • Overall, I proved the concept that phones without a Goo account can be fully functional.
  • Installed and ran MITMProxy in Ubuntu Linux, researching whether LineageOS "ran home to mama Goo"; researching "gotchas" on whether LineageOS was indeed an improvement
  • Used tcpdump, WireShark, and PHP scripts I wrote to analyze packet traffic, as above

re-mention of the law office digital assistant web application project, 2016, February - present

  • This is my first entry way above (as of 2022, May), but it is worth a reminder that it was paying the bills until the budget went down (due to no fault of mine)

web host end user panel development, 2016, August

Developer - PHP, JavaScript, jQuery / AJAX, MySQL (LAMP)
  • Created an interaction to auto-populate country, city, state (region), area code, and country-phone prefix from ZIP code (postal code). The interaction used JavaScript, jQuery, HTML5, CSS, PHP, and MySQL. (UI and some degree of UX)
  • Enforced password-strength requirements in PHP and JavaScript / jQuery
  • Implemented and modified a JavaScript wait-time spinner (hourglass)
  • Used Sass / CSS to make a number of changes--making sure HTML elements appear and disappear appropriately, moving elements around, etc.
  • Found and removed a previous developer's back-door password
  • Identified and removed Bootstrap and Bootstrap CSS code that was conflicting with preexsiting code
  • Dealt with preexisting apostrophe / MySQL escape-character issues

project codename Taxi, 2016, January

Repairs, upgrades, and administration of a Goo Python site ("Goo" is my avoiding a company whose services I'd rather not use anymore)

  • Fixed email notification of reservations: added an authorized sender in the App Console. Put the sender in one piece of Python code (factored)
  • Fixed the web-to-email / customer contact form, an HTML change
  • Moved the site to a different Goo user and project ID. In the domain name registrar's DNS zone file, changed the necessary CNAME, A, and AAAA settings
  • Upgraded code to Python 2.7. Fixed resulting HTML UTF-8 errors by eliminating unnecessary characters
  • Created a local Ubuntu Linux dev environment to run the application / site, including Eclipse debugging

codname Creative, 2015, November - 2016, January

The following were 3 different sub-projects

  • Diagnosed a problem with an e-commerce system's modules for featured and new products. Made a local copy of the site, used MySQL Workbench and followed the MySQL general (SQL query) log until I found that both modules needed the product to be in the "Featured" category. (The system is LAMP - Linux Apache MySQL PHP)
  • Fixed a web / e-commerce payment process, a LAMP system. I tracked the problem to several JavaScript files whose Linux permissions were wrong. (The Apache web server did not have access to the files.)
  • Fixed 15+ issues on a 3rd LAMP system, including some below
  • Significant repairs to payment processing until it worked. (Stripe payment gateway)
  • Fixed the rest of the signup process
  • Implemented coupons / discounts
  • Implemented part of admin access versus standard user
  • Developed on a local copy of the system--some Linux sysadmin and MySQL dba

codename Jump, 2013, Sep - 2016, Jan (occasional consulting)

This is the same client as the television recording and phone privacy projects in 2019.

  • Fixed a virtual host error in Apache on an AWS EC2 CentOS Linux instance. Gave advice on AWS.
  • Feasibility mini-study of a video upload site:
    • Used ffmpeg to convert 3gp (Android) video format to Flash (flv)
    • Demonstrated Apache-level user login security and HTML-to-PHP video file upload and post.
  • Feasibility mini-study of using a specific LAMP system for a new site: installed the system on my Ubuntu Linux server, opened it to the internet, created a second admin user, and helped research plugins for login management and video upload.

codename Early Bird, 2015, March - April

  • e-commerce LAMP project - Fixed a client's live site: web response time went from minutes to a few seconds or less. I copied the site and database from the shared host to a laptop to get root access and use the MySQL general log. The laptop was Ubuntu Linux. (LAMP - Linux Apache MySQL PHP)
  • another open source language project:
    • Copied a live shared-hosted inventory reporting site, including the PostgreSQL database, to a Linode VM. (Linux sysadmin, PostgreSQL dba)
    • Did the Linode Ubuntu Linux install from scratch--installed and configured Apache, the language, PostgreSQL, etc. (Linux sysadmin)
    • Wrote cron jobs and Bash scripts (including boot scripts) to reproduce a 3rd party scheduler. (Linux sysadmin)
    • Identified and thoroughly described a bug involving automatic purchase order generation and presented a solution
    • Described in SQL a bug involving duplicate Amazon order ids
    • Figured out the scheduling / timing interaction between the Amazon-order-fetching script and the backorder reporting script; thus, I could explain the discrepancy between the live backorder report and the to-be-live report
  • Installed phpMyAdmin and created a MySQL backup script and cron job
  • Studied the Base CRM API and found sample code for creating a web "contact us" form that goes beyond the BaseCRM one-line JavaScript form

project Numbers (another repeat client, always under Numbers) 2015, February

  • LAMP system hack recovery: identified and repaired affected PHP files
  • Copied live site (MySQL and PHP) to my development Ubuntu Linux machine (running Apache) so that I could turn the system's features on and off until I tracked down the hacked files

codename Kitchen Drain, 2015, January

  • Gathered requirements for a system involving CRM, appointment handling, and Quickbooks integration
  • Got customer data going into and coming out of a Quickbooks sandbox, in preparation for customer and receipt integration. This uses PHP, OAUTH, and the Quickbooks API.
  • Wrote an article on getting the QuickBooks PHP API working. This became fairly popular for several years.

codename Laborious, 2014, December

Wrote a prototype / demo web application to connect general building contractors with subcontractors. Technologies / Features:

  • LAMP (Linux Apache MySQL PHP) plus a JavaScript library.
  • login / user / session management
  • maps to set and show user's location, CSS to overlay instructions on the map
  • calculated latitude and longitude lines for a "square" to find subcontractors within x miles of the contractor, then used the Haversine formula to calculate exact distance; also calculated direction

project Numbers yet again, 2014, June - October

  • Found a workaround to a critical LAMP-system bug (a large, popular LAMP system that I do not want to work with anymore). Installed the system on my own Ubuntu Linux server and exported and imported a copy of the site for a test environment.
  • Got my preexisting JavaScript numerology calculator working in the new system. (Moved the JavaScript to a .js file because the system was escaping backslashes and thus breaking regular expressions (regex).)
  • Trained site author to use the <pre> HTML5 / HTML tag to align the letter-number numerology grid. After many years of frustration, this made the alignment much easier.
  • Determined that the xmlrpc.php file was not needed and deleted it because it was being called thousands of times for a hack attempt.
  • Determined that hits to xy-load.php are legitimate. This involved analysis of web server access logs, IP whois, etc.
  • Analyzed web server access logs for hit patterns, timestamps, and IP whois to tentatively determine that many hits from China are from human viewers and not bots. (The site owner eventually had a couple of Chinese literally show up at his doorstep, so someone was human.)

codename Minefield, 2014, June

  • Identified an inadequate 256MB Ubuntu Linux swap space as the performance issue with a Minecraft server; increased to 2GB (equal to RAM).

Python project, 2013, August - 2014, June

This was a repeat client from the Chrome extension earlier / just below.

Below, I'm going to call the 3rd party system we used OpenE. Once again, I am avoiding technologies I don't want to be pestered about.

  • OpenE development in object oriented (OO) Python 2.7, OO JavaScript, JQuery 1.8.3, XML, PostgreSQL 9.2, and Ubuntu Linux 14.04:
    • Created a sales commission feature: the user assigns a commission percentage to each sales line item, and this carries over to the invoice.
    • Created 10 other addons / modules:
      • Accounting workaround - If accounting isn't completely set up, this allows the user to use the customer database and sales orders without encountering required accounting fields.
      • Mailing list opt-in / opt-out: generates and processes (un)subscribe links, records IP address and date of this action.
      • Mail send later - set an email to send later rather than now.
      • Several tasks can be summed up as: New forms, new fields, UI property changes, UI filters.
      • Several of these modules involved very detailed extension of / inheritance from existing OpenE objects, both in Python and JavaScript.
    • Extensive use of Eclipse / PyDev Python debugger / IDE and Goo Chrome Developer Tools JavaScript debugger.
    • Used JavaScript / JQuery to solve problems that the OpenE standard model did not account for (such as invisible table headers versus visible table data).
    • OpenE is an MVC architecture.
  • Database administration:
    • Installed and configured PostgreSQL and restored the production database in Ubuntu Linux 14.04. Performed both full and incremental / binary log / WAL restores.
    • Backed up PostgreSQL--both full backups and incremental (binary logs / WAL).
    • Documented full and incremental backup processes.
  • Sysadmin
    • Installed OpenE in Ubuntu Linux 14.04
  • Support / Training
    • End User support
      • Solved the "blank invoice issue" after detailed analysis of data (SQL), workflows (XML), and code (Python)
      • Helped explain and document the marketing email process
      • Explained folder security process
    • Developer support / Training
      • Took 3 other developers through the Eclipse - PyDev debugging process
      • Helped train 2 other developers
      • Wrote several technical bulletins on OpenE issues / best practices
  • Sales - Created and demoed an analytic account scenario that was crucial to selling the OpenE installation
  • OpenE admin - imported contacts from common applications into OpenE.

pre-Python mini-projects; 2013, April

This is the same client as the Python project a few months later.

  • I wrote a Goo Chrome extension involving traversal and parsing of an HTML5 DOM tree, HTML5 local storage, OAUTH, XML / JSON I/O to / from Goo Data REST APIs, generating and handling events and inter-module messages. Written in Object Oriented JavaScript. (The boilerplate NDA can be interpreted as forever, so I still won't reveal the details.)
  • I wrote a second application involving OAUTH and other Goo APIs.
  • I wrote a simple Goo cloud spreadsheet macro in JavaScript

GameSkunk project; 2011, Feb - May

GameSkunk was the name of the product. I have no idea if the small company exists anymore, so I once again won't list it.

  • Wrote a USB device driver, API, GUI, and slide show for the GameSkunk scent generator
    • Slide show with music and the Skunk's scent as a demo, used an XML config file
    • GUI to turn scents on and off
    • Multi-threaded with resource locking
    • My software was demonstrated at the Consumer Electronics Show (CES) in 2011
  • Documented the GameSkunk bytecodes, API, and hardware specifications
  • Consulted on the driver with developers for a second platform--one of if not the best selling game platform (In this case I'm avoiding the name because it's something I touched once years ago, so it's not relevant for anyone to contact me about it.)
  • The driver was partially in Linux but mostly on a platform that I don't want on my resume anymore.

codename Wizard, 2012, Dec – 2013, Feb

  • Wrote HTML/CSS/JavaScript/AJAX/PHP/e-commerce/MySQL customization to show the customer different prices and store views based on their zip code
  • Created a zip code database based on open / crowdsourced data
  • Wrote REST interactions / integrations between the e-commerce system and the client's custom system--prices, inventory, and shipping from the custom system, customer data and payment info to the custom system
  • Wrote two e-commerce extensions, for the zip code pricing and custom-system interactions
  • Guided client through e-commerce front-end problems and consulted with them on setup; helped them work through product data problems
  • Moved e-commerce installation and data from test site to permanent site
  • Changed database to get rid of fields from inactive extensions
  • Set up another LAMP system
  • Upgraded PHP from 5.2 to 5.3 on CentOS Linux server. Made changes to php.ini file. Adjusted Linux file permissions for the e-commerce system. Removed unnecessary MySQL users
  • Created a custom shipping method in the e-commerce system
  • Created a lightbox / modal dialog from scratch--no libraries

codename Schooled, 2011 - May - November

  • Moved a LAMP-based online course product from procedural to OO
  • Numerous bug fixes and enhancements.
  • A bit of web admin (.htaccess) to prevent password files from being exposed
  • LAMP = Linux Apache MySQL PHP

codename Fashion, 2011, July - Sep

  • Coded fifteen easy to difficult enhancements / bug fixes on a LAMP application.
  • Moved the LAMP app from shared hosting to a VM, configured Apache httpd.conf from scratch, sent a second domain to a different home page.
  • Eight easy to very involved enhancements / bug fixes on a Java / J2EE / JSP / Tomcat application (SVN code storage)
  • Coded an HTML-to-other-document-type feature--installed Debian packages for supporting software
  • Created a local Tomcat environment for testing.
  • Used jQuery for Lightboxes and AJAX calls
  • LAMP = Linux Apache MySQL PHP

WebsiteBaker project; 2011, July - Aug

  • Wrote an Intuit QBMS credit card payment module for the WebsiteBaker CMS in PHP, using Intuit's API calls (URL / GET calls, e-commerce keyword)

Firefox Add-on (extension); 2011, March - April

  • Wrote a Firefox Add-on (extension) to count characters of a major social media site's post while typing, so one doesn't exceed the 420 / 500 character limit (Object Oriented JavaScript)

project Numbers; 2010, June - intermittent work through 2022 and probably beyond

  • Wrote a JavaScript application to do ten numerology calculations based on name and birth date

real estate project, intermittently from 2007 - 2010

This is the same client as the earlier codename Professor project.

  • Systems analysis, coding, and support of a LAMP / WAMP / AJAX application to keep track of sales calls
  • Multi-user login, passwords hashed with secret salt and public salt
  • Search screen that previews result counts in each category and grand total
  • One-button backup that emailed a compressed .SQL file to user
  • 15 tables, 75 fields--kept track of phone numbers to call, result of call, cumulative status of lead, dollars-to-call ratio, source of lead, etc.
  • LAMP = Linux Apache MySQL PHP

codename Doctor; 2009, December - January 2010

Rescued customer data from a system that was at its end of life. I had to reverse several fields of an RDBMS (SQL), and then I extracted the data to desktop-searchable files and file names. The script was in PHP.

codename Professor project; 2010, maybe 10 - 20 hours of work

  • Configured an off-the-shelf LAMP application for online children's classes: Configured databases for forums and chat, installed and customized the php-BB forum system and a chat program; set up password protection (LAMP). Trained teachers to create new classes from the template I built.
  • LAMP = Linux Apache MySQL PHP

project Numbers, 2004

  • I wrote a Java applet to do nine numerology calculations based on name and birth date. (Anyone else remember Java applets?)

Object Alliance (an actual company name), contract, developer, 2004, June - July; Atlanta, GA

  • Performed systems analysis and rewrote a CRM-data-driven OLAP / data analysis / data warehousing system after a Siebel CRM transaction system upgrade. The OLAP system was in Oracle RDBMS and Hyperion Essbase
  • Performance tuning - Reduced the RDBMS analysis calculation (Oracle PL/SQL routines) by 8 times
  • Reduced the Essbase calculation time from infinite to workable; made outline changes

my main employee era

Hyperion Solutions (now part of Oracle), software engineer (employee), 2000 - 2002 (April to April); Kennesaw, GA

  • CRM-data-driven OLAP consulting that continued with Object Alliance in 2004
  • Original development of data analysis / OLAP systems in Oracle PL/SQL, MS SQL Server T-SQL, Informatica, and Hyperion Essbase
  • Some DBA experience beyond tuning - built my own test environments
  • Wrote a C program to output text from IBM DB2 UDB

Indus International, programmer / analyst, customer support 1997, August - 1999, April; Atlanta, GA

  • Worked all aspects of an industrial maintenance support system / ERP--customer support, bug fixing, fix testing, and installation at client sites. System written in C and Oracle SQL.
  • Took hundreds of bug calls, found problem, fixed it, and installed the fixes by modem
  • Specialized in fixing resource locking issues
  • The system kept track of purchasing, receiving, and inventory of maintenance parts, and maintenance schedules for power plants, gold mines, oil refineries, etc.

Numerically Yours, a variant of project codename Numbers, developer / analyst, 1996 (intermittently ongoing with various sub-projects through 2022)

  • Wrote a C program to perform 19 numerology calculations based on name and birth day.

Univ of So Cal (USC) Information Sciences Institute, programmer, employee, Marina Del Rey, CA, 1993 (June - July)

  • Wrote a Gopher client in C using the Prospero distributed file system, used TCP/IP socket networking calls

Thompson Group, programmer, contract, 1991; Mableton, GA

  • Wrote a file backup program in PASCAL and ran it to backup files to 5-1/4" floppies


page / resume history

  1. web only: 06/11 23:36, removed abolute link to availability / made it relative; added HTML5 validator link
  2. first post of this new version: 2022/06/02 17:55
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