<ul><li>Licensing Model Development: Conducted an in-depth discovery for implementing a per-use licensing model on a Platform-As-A-Service (PAAS), proposing a scalable infrastructure solution leveraging Rails as a backend API and NodeJS for the frontend.</li><li>Database Optimization: Analyzed and resolved performance issues with a Postgres database view by optimizing join queries, implementing parallel processing, and outlining a strategic migration plan to improve performance by 30%</li><li>Customer Service Support: Developed insightful reports for the customer service department using SQL and Trevor.io, enhancing sales call effectiveness and customer issue resolution</li></ul>

Fractional CTO Consultant

· E-commerce Implementation: Successfully integrated e-commerce solutions across multiple sites within the YourGrenadines.com network, including a Medical Elective Website and a Shuttle service site, usingWordPress, Gravity Forms, and Stripe.· Unified Travel Platform: Spearheaded the requirements gathering and discovery phase for a unified travel platform, laying the groundwork for future development.· Knowledge Management: Designed and implemented a comprehensive knowledge management system for several companies using Notion, enhancing organizational efficiency.· Pagespeed Optimization: Measured performance using pagespeed tools and implemented fixes in an ongoing effort that has resulted in a 20% increase in pagespeed score so far..

Fractional CTO

· Evaluating the quality of AI-generated code, including human-readable summaries.· Writing logic prompts and rubrics to train LLMs on logic and tricky problems.· Writing human-readable summaries of coding problems.* Evaluating LLM agentic tool use for syntactic and semantic correctness.· Writing explanations of how code can solve problems and evaluate various solution approaches.

AI Trainer

Led swift disaster recovery efforts, orchestrating server restoration procedures to ensure uninterrupted application functionality during critical outages.Rescued and optimized a malfunctioning e-commerce platform by diagnosing and resolving issues within the Stripe, Strapi, and Next JS stack.Integrated and enabled the Stripe Customer Portal to provide subscription functionality.Spearheaded the introduction of comprehensive automated testing frameworks for NextJS and NodeJS servers, significantly reducing regression errors and enhancing overall code quality.

· Introduced modern SDLC Agile practices to a proof of concept on a journey towards an MVP using Ruby on Rails 7.0 and Vue 2.x· Created sports data fetching agent in Ruby to retrieve player data and stats for four sports leagues.· Improved API endpoint performance on a Rails server using Redis for caching with an 80% reduction in time to 1 second as an optimization action item.· Integrated ChatGPT with player statistics to generate content for Flumly newsletter and web site.

This is a volunteer project I work on in my spare time.I have set standards for development projects within the QueerGlobal organization, adding CI/CD and ESLint for automated testing to the frontend repository, written in React. I&#x27;ve also added automated tests to the frontend repository, improving test coverage by 50% so far.I have planned &amp; outlined deployment strategies for static sites as well as the infrastructure for the next generation of the site, which will be using Microservices written in GoI conduct code reviews, mentor developers on best practices, onboard developers through meetings and onboarding materials that I developed

Director Engineering

<ul><li>Led engineering teams on Grading &amp; Assignment Servicesdevelopment projects for this learning platform serving 75,000 people. Executed on aggressive timelines to reduce technical debt while adding value to core grade book app.</li><li>Implemented features for Homework Assignment App used in 2U’s online compendium of offerings to over 60 graduate school programs</li><li>Reviewed code on Rails, React, Angular, and Python as part of collaborative software development process leveraging pair programming and retrospectives.</li><li>Enhanced documentation, tools, and institutional knowledge used to facilitate resource allocation and proposal development for new contracts.</li><li>Fueled recruiting efforts to fill pipeline with diverse recruits, and interviewed prospective hires for technical aptitude and cultural fit.</li><li>Chaired Global Communications for Business Resource Network (Employee Resource Group) for African-Americans.</li></ul>

Senior Software Engineer

<ul><li>Upgraded Elasticsearch servers used in conjunction with RUN ads’ CRM product (The Portal). Created and configured indexable models using Chewy library.</li><li>Implemented zip-code level ad-targeting using geo data from gadm, imported and modified to create GEOGJSON files imported into MongoDB.</li><li>Developed system capabilities allowing portal users to create ad campaigns in 23 currencies with up-to-date exchange rates.</li></ul>

Software Engineer

<ul><li>Managed product development for microservice-based ecommerce architecture built in Node.js with MongoDB as a data store on AWS.</li><li>Designed product roadmap with milestones for improvements such as production-level logging, continuous integration, and error reporting using Rollbar – leading to drastic improvement in response time to incidents.</li><li>Introduced automated unit testing via Mocha, Sinon, and ExpectJS, as well as integration testing using Supertest.</li><li>Guided developers in leveraging best practices in code mentoring and code reviews.</li></ul>

Team Lead

Built Node-based data collection form with region-based filtering as well as Postgres DB with custom ports and Drywall registration/admin system. Modified system configured for mongo/Mongoose to work with Postgres and SequelizeJS.Improved distributed team communication and efficiency through database setup scripts and Open-Source development practices.

Consultant

<ul><li>Optimized system empowering farmers, growers, and food buyers to easily purchase and schedule logistics. Updated payment processing to enable offline transaction recordkeeping, using Rails, Postgres, and Sidekiq.</li><li>Expanded order search capabilities for admin, buyer, and seller on ecommerce site , using Rails and Angular.</li></ul>

Co-built website and administrative CMS, using Rails, Backbone.JS as MV framework, Refinery as the Content Management System (CMS), and CouchDB. Implemented key features such as blog and image auto-sizing as Refinery extensions.Integrated Jasmine tests to front-end codebase to apply Behavior Driven Development.

Hired as lead developer for Rails app that uses predictive analytics (in R) to determine optimal media spend across brands and channels.Trained new hires on Ruby and Ruby on Rails, and configured Rails to work with SQL.

<ul><li>Planned, designed, and implemented data feed system between RecycleBank and Barclays card company to handle enrollment and transaction, and reward sync for the RecycleBank Barclays credit card.</li><li>Established tools, development processes, and communication protocols for team of 10 Rails developers, including automated testing processes to obviate manual testing based on an excel spreadsheet.</li></ul>

Tech Lead

<ul><li>Led offshore development center: implementing Agile, setting code standards and ASP.NET best practices, and leading code reviews and daily standups.</li><li>Fixed ecommerce subscription service developed in C# and .NET. Later migrated service to Ruby on Rails an created custom login/registration for CRM.</li><li>Created web app infrastructure for financial services CRM.</li></ul>

Director Systems Engineering

I've created code to fetch and organize data from multiple sports leagues using HTTParty and mysportsfeeds.com as an API provider. 

I've used Mechanize and Nokogiri to create a web scraper to fetch links to use with an open source security scanner. 

I've taught, coached and guided students learning Ruby while a mentor at Thinkful.com

I've helped run an open source project based upon Ruby on Rails for eight years at https://github.com/EBWiki/EBWiki.  In addition, I built an agent to fetch data from mysportsfeeds.com to power flumly.io, a site dedicated to alumni sports fans. This included feeding the site itself as well as feeding data to prompts into both SportsBERT and ChatGPT to evaluate LLM generated sports content.

I've created, deployed and maintained solutions on AWS for some time. Tasks I've completed include:
* Setting up autoscaling groups for staging and production EC2 instances to create a resilient development infrastructure using Terraform
* Performed Disaster Recovery on EC2 instances using EC2Rescue on Linux instances, and mentored/advised on strategies for Windows instances using the AWS CLI and console
* Evaluated, modified and EC2 and RDS security groups to ensure that only valid connections are involved.


I've refactored a monolithic NextJS codebase into smaller components for greater maintainability.

I've also added Jest for unit testing as well as Playwright for end-to-end testing as part of a testing strategy.


Here's an example of some of the work I've been doing in this role.

I've successfully integrated e-commerce solutions across multiple sites within the YourGrenadines.com network, including a Medical Elective Website and a Shuttle service, utilizing WordPress, Gravity Forms, WooCommerce and Stripe.
• Unified Travel Platform: Spearheaded the requirements gathering and discovery phase for a unified travel platform, providing a strategy for the client to peruse.
• Knowledge Management: Designed and implemented a comprehensive knowledge management system for several companies using Notion, enhancing organizational efficency.
* Business Process Automation: Identified business processes to optimize and executed several initiatives using Zapier, Notion, and other technologies.


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Mark N.

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