Resume

Demetrious Wilson

Senior Software Engineer · Full-Stack · Seattle, WA

Full-stack engineer with 13+ years of experience shipping production systems across e-commerce, fintech, insurance, and logistics. Specializing in Ruby on Rails, React, TypeScript, and AWS cloud infrastructure.

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Professional Experience

Software Development Engineer II (SDE II) — Contractor via Collabera

Amazon.com May 2025 – May 2026
In-Office, Bellevue WA

Building high-throughput delivery speed recommendation systems and large-scale data pipelines powering the Same-Day Store experience for millions of customers.

01 SDE Contractor with the Delivery Experience Team, working on Same-Sub-day Delivery Speed Recommendations Service (SpeedRecx).
02 Maintaining the primary CDK provisioning and CI/CD pipeline for the Speed Recommendations team.
03 Massive analytics query across DynamoDB (1.7 TB) and Amazon Marketplace Product Tables, producing a daily 350 GB key-value wide column table.
04 Wrote distributed Apache Spark Scala to power LLM-generated product titles shown to millions of customers on the "Same-Day Store".
05 Designed chaos testing for an auto-scaling ECS fleet on Fargate using AWS Fault Injection Service.
06 Built a sidecar-based fault injection framework orchestrated through AWS Systems Manager for controlled network latency during load testing.
07 Validated service performance ensuring sub-100ms P50, P90, and P99 latency targets.
JavaScalaApache SparkTypeScriptAWS CDKDynamoDBECSFargate

Senior Software Engineer — Sole Developer

PureLinks.xyz Nov 2024 – May 2025
Remote

Designed and shipped a full-stack link sharing and AI-powered questionnaire platform from zero to production as the sole engineer.

01 Built a link sharing and questionnaire form builder platform as the sole developer.
02 Integrated AI-powered questionnaire generation using the OpenAI API.
03 Implemented an MCP endpoint with API key-based authorization supporting full key revocation and rollover.
04 Dockerized deployment via DockerHub using Kamal with DNS and SMTP routing via Mailgun.
05 Managed DigitalOcean Linux servers with Ansible for infrastructure automation.
Rails 8GraphQLDockerTypeScriptReactTailwindCSSOpenAI APIModel Context Protocol

Senior Software Engineer — Events Platform Team

GiveCampus May 2024 – Nov 2024
Washington D.C. (Remote)

Led feature development on the Events Platform, shipping affiliation-based ticketing and complex event workflows for higher education fundraising.

01 Developed and launched the Affiliation-based Event Ticketing feature (tickets based on Alumni, class year, or custom affiliations).
02 Engineer Lead for the design, scoping, and implementation of the "RSVP No" for Complex Events feature.
03 Contributed to the Events "Custom Reporting" feature.
04 Developed the Event "Affiliation-based Add-Ons" for Complex Events.
Rails 7HerokuGitHub ActionsStripePostgreSQLTypeScriptTailwindCSS

Senior Software Engineer

Shift.com Jul 2021 – Sep 2023
San Francisco, CA (Remote)

Led a frontend team building high-traffic vehicle search, pricing, and checkout flows while owning the B2C shopping experience and transactional email infrastructure.

01 Led a 5-engineer team building high-traffic React + TypeScript interfaces for vehicle search, pricing, and checkout flows.
02 Built a dynamic pricing calculator enabling customers to adjust loan payments and down payments based on saved settings.
03 Responsible for the B2C shopping experience (favorites, browse, VDP, SEO) powering the homepage and Vehicle Description Page.
04 Sole developer who migrated transactional emails from Iterable to a custom AWS SES & Lambda solution, achieving a 99% reduction in dropped sign-in emails.
Rails 7ReactTypeScriptAWS S3LambdaGraphQLDynamoDBSQSDocker

Senior Software Engineer — Surety Division

Liberty Mutual Insurance Group May 2019 – Jun 2021
Seattle, WA

Full-stack development building internal underwriting and reporting tools for the Surety Division, integrating React frontends with AWS-hosted services.

01 Full-stack development building internal tools for the Surety Division.
02 Built internal operational web applications for underwriting and reporting workflows.
03 Delivered React-based data tools integrated with AWS-hosted backend services.
Rails 6TypeScriptReactGraphQLPostgreSQLAWS EC2S3LambdaRDS

Senior Software Engineer

Varsity Tutors Jul 2018 – Jan 2019
Seattle, WA

Worked on the client-facing tutor streaming platform, connecting students with tutors in real time and building the tutor rating system.

01 Worked on the client-facing tutor web streaming backend connecting students with tutors.
02 Primary developer for the tutor rating system.
Rails 5MySQLReact

Senior Software Engineer

Fox Commerce Nov 2016 – Sep 2017
Seattle, WA

Built product analytics dashboards, a Go-based recommendation engine, and e-commerce storefronts for small business customers.

01 Developed a "Dataviz" charts and display web interface for product analytics in React with D3.
02 Built a backend product recommendation service in Go integrated with Neo4j.
03 Deployed frontend e-commerce sites in React for small business customers.
04 Built an SMS-powered "One-Click" ordering chatbot using a proprietary API.
Rails 5MySQLReactD3.jsGoNeo4j

Software Engineer / iOS Developer

Stella & Dot Jul 2013 – Oct 2016 & Sep 2017 – Jan 2018
Seattle, WA

Full-stack PHP and Rails development for the e-commerce backend, plus launching and maintaining the "Dottie" iOS app from Swift 1.0 through Swift 4.

01 PHP Zend Framework development for Stella&Dot backend integrated with Magento.
02 Launched and developed the mobile app "Dottie" starting with Swift 1.0 through Swift 4.
03 Wrote optimized Ruby on Rails backend code to serve faster JSON API, reducing mobile app download times.
MagentoPHPJavaScriptjQueryMySQLSwiftiOSRuby on Rails

Junior Software Engineer — Supply Chain Logistics

Zulily Aug 2011 – Oct 2012
Seattle, WA

Built warehouse logistics and product fulfillment tracking software for the Supply Chain team.

01 Software Engineer on the Supply Chain Logistics / Product Fulfillment Team.
02 Developed internal reporting for the Logistics team's product tracking.
03 Built warehouse pick-pack-and-ship product tracking software with C# and SQL Server.
PHPjQueryC#SQL ServerWindows Server
Education
BS_PHYSICS 2011

Washington State University

Bachelor of Science in Physics. Coursework in computational physics, electrodynamics, and mathematical modeling.

Certifications
AWS Certified Cloud Practitioner (CLF-C02) Passed
AWS Certified Developer Associate (DVA-C02) In Progress
Concurrent Programming in Java — Rice University Passed
Distributed Programming in Java — Rice University Passed
Parallel Programming in Java — Rice University Passed