DD.

Hello, I am

Dennis Drueck

Senior Full-Stack TypeScript Engineer

With 7 years of software engineering and 20 years in Information Technology, I specialize in full-stack TypeScript systems, from high-concurrency APIs and event-driven microservices to AI document review systems, auditable systems of record, batch processing pipelines, and DAG-driven workflows in microservices infrastructure.

Currently, I lead some of the most complex and time-critical initiatives on Tempus AI's clinical genomics ordering platform, a high-reliability system processing 36K+ monthly orders where data integrity, compliance, and throughput are non-negotiable. I've led teams of up to 5 engineers on complex initiatives.

I bring an uncommon combination to complex projects: deep engineering expertise, product thinking, and visual design intuition. Most engineers can implement a spec. I help define it. I can drive requirements discussions and spot the UX edge case, the data model implication, and the downstream API impact at the same time. That cross-domain fluency means fewer handoff gaps, faster iteration, and systems that hold together end-to-end.

My current stack includes TypeScript, React, Node.js, PostgreSQL, Terraform, and Google Cloud Platform.

I am currently pursuing a Master of Science in Computer Science (part-time, expected 2028), deepening my formal expertise in natural language processing and deep learning. This directly informs my applied AI work and keeps my practice grounded in proven techniques rather than hype.


Resume

Experience

Senior Software Engineer

Tempus AI (via Egen)

4/2023 – Present

Chicago, IL

  • Modernized the ordering platform with a modular, server-driven UI, enabling every new product to launch 2–4 weeks faster.
  • Raised SLO compliance to 99% from 88% by eliminating concurrency issues in the laboratory information management system (LIMS).
  • Led a cross-functional API upgrade for EMR ordering infrastructure, eliminating 160 hours of manual triage per month for order failures.
  • Improved reliability and compliance of the config-driven ordering platform (36K+ monthly orders) through runtime flags, privacy-aware error handling, and simplified failure modalities.
  • Mentored 5 engineers through documentation, demos, pair programming, and code reviews—accelerating senior-level readiness by 3–6 months, raising code quality, and enabling mentees to lead initiatives with up to 4x greater scope.

Software Engineer

Martial Arts Technologies

12/2022 – 4/2023

Chicago, IL

  • Cut costs for maps integration by 10x by replacing Google Places with a custom implementation of ArcGIS and OpenStreetMap, preserving full interactivity and existing UX.
  • Improved customer satisfaction and SEO performance by implementing responsive, cross-platform UIs and robust form validation across 60 web pages—reclaiming 10 hours per month for the support team.
  • Unblocked launch by building a custom image analysis tool to auto-generate brand-aligned themes, cutting 50 hours of skilled design labor at launch and 5 hours/month ongoing.

Software Engineer

Ethereum Homies

11/2021 – 08/2022

West Palm Beach, FL

  • Accelerated time-to-revenue, generating $2M+ in NFT sales through fast-paced delivery, delivering MVP within 1 week, and every new feature within 1 day of feature request.
  • Created a resilient Web3 client with 99.9% transaction success by syncing real-time pricing and gas estimates—boosting user trust and mitigating support overhead.
  • Established critical credibility in a competitive NFT market through a performant, media-rich UX including 3D model interactivity, video embeds, and responsive layouts.

UI Developer

Text2Drive

02/2019 – 10/2021

Chicago, IL

  • Delivered real-time messaging widgets to over 200 auto dealership websites, owning development, deployment, and client onboarding.
  • Reduced design change requests by 85% by increasing asset configurability, achieving seamless UX coherence with host sites.
  • Reduced time-to-delivery by 50% by improving cross-company delivery pipelines.
  • Automated tasks using Python and Selenium, eliminating 40 hours per month of toil.

Education

FastTrack Developer Program

Cook Systems

12/2022 – 02/2023

Memphis, TN

  • Led a team of 3 developers, building multiple full-stack applications, including a Twitter clone, a Spotify-based guessing game, and a company management portal.
  • Studied design patterns, Onion Architecture, Git, GitHub, Java, Spring Boot, PostgreSQL, JavaScript, React.js, Node.js, CSS, and HTML.

Bachelor of Fine Arts

University of Illinois Chicago

08/2008 – 05/2012

Chicago, IL

  • My design background helps me build excellent, functional UIs with visual clarity and ease of use.

Certifications

FreeCodeCamp.org

06/2021 – 12/2022

San Francisco, CA

  • Back End and APIs — Express.js, MongoDB, Node.js
  • Relational Databases — PostgreSQL, Bash
  • Front End Libraries — React.js, Redux, jQuery, Bootstrap
  • JavaScript — Data Structures and Algorithms
  • Python — Scientific Computing
  • Responsive Web Design — Semantic HTML5, CSS3

Featured Projects

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Martial Arts Technologies

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Astro Portfolio

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TrapMonkie

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EthereumHomies

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Twitter Clone API

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Spotify Artist Guessing Game

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Company Management Portal

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Exercise Tracker