Tom Dennis Email & Phone Number

Mclean, Va, Us

Seattle, Wa, Us

· Developed a back-end system and API for a Virtual Reality Police Training Platform; including Python-based Lambda functions, an API Gateway instance with Cognito authentication, a DynamoDB database with streams and complex data modeling, SQS distributed processing, EventBridge scheduling, and AWS SAM for Infrastructure as Code and CI/CD.· Modernized a production-grade, monolithic federal data transfer system to leverage cloud-native AWS services; featuring an Express.js API with mTLS authentication running on ECS, various event-driven Lambda functions triggered via API Gateway or SQS and orchestrated with Step Functions, MongoDB and DynamoDB databases for system-level auditing, S3 for file transfers between components and payload auditing, CloudWatch for monitoring system health and throttling overloaded consumers, and a suite of CI/CD tooling to automate multi-environment deployments with strict compliance standards· Built a full-stack TypeScript application to automate AWS account creation for cloud development teams within a federal agency; consisting of a React UI, a Lambda-backed API with Azure AD authentication/authorization and complex attribute- based access control, ServiceNow ticketing and security/compliance API integrations, exportable CSV files containing detailed compliance reports, an Amazon Aurora PostgreSQL database with fully automated migrations, and a multi- environment CI/CD pipeline with all infrastructure defined via AWS CDK· Enabled Census employees to track and update survey responses in real time by creating a full-stack TypeScript application to replace a daily manual procedure; comprising a React UI hosted via a custom API Gateway/S3 solution to circumvent GovCloud service restrictions, a Lambda-backed API with Cognito authentication, a DynamoDB database with advanced application logic to support filtering/sorting requirements, and a fully automated build/deployment process using Terraform

· Led front-end development of an Angular web application to coordinate the H-1B Registration Process; including authentication/authorization, scheduling functionality, lottery selection, notification processing, and search capabilities.· Implemented complex concurrency, batching, error-handling, and failure recovery logic to ensure the H-1B lottery process could efficiently and resiliently select winners from a pool of over 300,000 entrants and subsequently notify each entrant of his or her selection status, resulting in over 100,000 successfully issued H-1B visas.· Migrated all client-side H-1B business logic to a Java Spring Boot orchestration microservice with a GraphQL API in order to reduce client-server network traffic and improve system efficiency; leading to an estimated 50% reduction in selection and notification processing time during performance testing.· Architected and implemented a highly reusable, monorepo-based front-end system for a cross-team case management web application, featuring a dynamic component library for rapid form building and advanced case search capabilities.

Emeryville, Ca, Us

· Processed and transformed Medicare patient data spanning up to 1.6 billion rows using SQL.· Projected a national health provider’s financial debt by creating SQL scripts to aggregate unpaid claim amounts.· Pinpointed a single drug distributor’s opioid shipments from within the DEA’s anonymous national opioid shipment dataset in order to benchmark their opioid threshold levels against the government mandated percentages and evaluate compliance.· Built graphical and tabular distributions, summaries, and models in Microsoft Excel and presented during meetings.

University Of Richmond, Va, Us

· Assisted during Introduction to Computer Science labs and analyzed student projects to provide constructive feedback

Austin, Tx, Us

· Improved brokerage’s ability to analyze client data and manage marketing campaigns by cleaning and loading individual agents’ spreadsheets of varying formats into a shared database of over 2,500 clients.

Audubon, Pa, Us

· Expanded web application built in Java Spring Framework to include online form submission for wire payments· Resolved backlog of client-side JavaScript/jQuery bugs and feature requests prior to scheduled start of production phase· Wrote SQL queries to validate client database integrity and coordinated approval process for software updates

Bachelor Of Science (B.S.), Computer Science

Full-Stack Web Development Bootcamp