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.
Professional Experience
Amazon.com
Software Development Engineer II (SDE II) — Contractor via Collabera JavaScalaApache SparkTypeScriptAWS CDKDynamoDBECSFargate
- SDE Contractor with the Delivery Experience Team, working on Same-Sub-day Delivery Speed Recommendations Service (SpeedRecx).
- Maintaining the primary CDK provisioning and CI/CD pipeline for the Speed Recommendations team.
- Massive analytics query across DynamoDB (1.7 TB) and Amazon Marketplace Product Tables, producing a daily 350 GB key-value wide column table.
- Wrote distributed Apache Spark Scala to power LLM-generated product titles shown to millions of customers on the "Same-Day Store".
- Designed chaos testing for an auto-scaling ECS fleet on Fargate using AWS Fault Injection Service.
- Built a sidecar-based fault injection framework orchestrated through AWS Systems Manager for controlled network latency during load testing.
- Validated service performance ensuring sub-100ms P50, P90, and P99 latency targets.
PureLinks.xyz
Senior Software Engineer — Sole Developer Rails 8GraphQLDockerTypeScriptReactTailwindCSSOpenAI API
- Built a link sharing and questionnaire form builder platform as the sole developer.
- Integrated AI-powered questionnaire generation using the OpenAI API.
- Dockerized deployment via DockerHub using Kamal with DNS and SMTP routing via Mailgun.
- Managed DigitalOcean Linux servers with Ansible for infrastructure automation.
GiveCampus
Senior Software Engineer — Events Platform Team Rails 7HerokuGitHub ActionsStripePostgreSQLTypeScriptTailwindCSS
- Developed and launched the Affiliation-based Event Ticketing feature (tickets based on Alumni, class year, or custom affiliations).
- Engineer Lead for the design, scoping, and implementation of the "RSVP No" for Complex Events feature.
- Contributed to the Events "Custom Reporting" feature.
- Developed the Event "Affiliation-based Add-Ons" for Complex Events.
Shift.com
Senior Software Engineer Rails 7ReactTypeScriptAWS S3LambdaGraphQLDynamoDBSQSDocker
- Led a 5-engineer team building high-traffic React + TypeScript interfaces for vehicle search, pricing, and checkout flows.
- Built a dynamic pricing calculator enabling customers to adjust loan payments and down payments based on saved settings.
- Responsible for the B2C shopping experience (favorites, browse, VDP, SEO) powering the homepage and Vehicle Description Page.
- Sole developer who migrated transactional emails from Iterable to a custom AWS SES & Lambda solution, achieving a 99% reduction in dropped sign-in emails.
Liberty Mutual Insurance Group
Senior Software Engineer — Surety Division Rails 6TypeScriptReactGraphQLPostgreSQLAWS EC2S3LambdaRDS
- Full-stack development building internal tools for the Surety Division.
- Built internal operational web applications for underwriting and reporting workflows.
- Delivered React-based data tools integrated with AWS-hosted backend services.
Varsity Tutors
Senior Software Engineer Rails 5MySQLReact
- Worked on the client-facing tutor web streaming backend connecting students with tutors.
- Primary developer for the tutor rating system.
Fox Commerce
Senior Software Engineer Rails 5MySQLReactD3.jsGoNeo4j
- Developed a "Dataviz" charts and display web interface for product analytics in React with D3.
- Built a backend product recommendation service in Go integrated with Neo4j.
- Deployed frontend e-commerce sites in React for small business customers.
- Built an SMS-powered "One-Click" ordering chatbot using a proprietary API.
Stella & Dot
Software Engineer / iOS Developer MagentoPHPJavaScriptjQueryMySQLSwiftiOSRuby on Rails
- PHP Zend Framework development for Stella&Dot backend integrated with Magento.
- Launched and developed the mobile app "Dottie" starting with Swift 1.0 through Swift 4.
- Wrote optimized Ruby on Rails backend code to serve faster JSON API, reducing mobile app download times.
Zulily
Junior Software Engineer — Supply Chain Logistics PHPjQueryC#SQL ServerWindows Server
- Software Engineer on the Supply Chain Logistics / Product Fulfillment Team.
- Developed internal reporting for the Logistics team's product tracking.
- Built warehouse pick-pack-and-ship product tracking software with C# and SQL Server.
Education
Bachelor of Science, Physics
Washington State University Certifications
AWS Certified Developer Associate (DVA-C02) In Progress