Dennis Drueck

Chicago, IL

• Led large-scale engineering initiatives, reducing delivery times by up to 50% through structured requirements gathering, technical design, and data-driven retrospectives.
• Elevated code quality and team efficiency through mentorship, code reviews, and pair programming—reducing reviewer change requests by 10-25%.
• Cut release delays by 60% by driving cross-team collaboration, improving engineering processes, and enhancing automated pre-merge checks.
• Designed and led the consolidation of multiple frontend applications into a configurable micro-frontend framework, accelerating product launches by 2–4 weeks per product, and improving tooling for 20+ engineers.
• Improved reliability and observability of critical data processing requests by architecting a job queue system, eliminating concurrency issues that would delay ~400 orders by 1–5 days per occurrence.

Naperville, IL

• Delivered end-to-end solutions for web apps, encompassing full-stack development, UI/UX design, SEO, and digital media, following Agile methodologies.
• Met product release deadlines by prioritizing key features through problem analysis and collaboration with product teams.
• Boosted client traffic and revenue by achieving top SERP rankings and enhancing user experience through optimized page speed, accessibility, and responsiveness.
• Accelerated feature delivery through iterative Agile sprints.
• Built automated CI/CD pipelines in GitHub for zero-touch deployment of latest changes.

Chicago, IL

• Led design and implementation of solutions for workflow automation, geolocation, and image processing in collaboration with the CTO and product manager.
• Reduced cross-platform support requests by implementing responsiveness and input validation across 50+ web pages using PHP, Blade, jQuery, and Bootstrap.
• Improved SERP ranking and page speed through network and asset optimization strategies.
• Automated time-consuming tasks related to logo color extraction by scraping CDNs and analyzing images with JavaScript, Node.js, color-thief and tinycolor2.

West Palm Beach, FL

• Created and maintained a single-page application to facilitate blockchain transactions in collaboration with the product manager and 1 additional developer.
• Delivered MVP in 1 week, and 2 major updates within 1 week of requirements approval.
• Imported real-time data and performed asynchronous transactions via Ethereum's JSON RPC API using web3.js, providing error-proofing and ease-of-access.
• Optimized cross-platform user experiences with responsive and adaptive design, lazy-loading, and asset optimization.

Chicago, IL

• Owned development, deployment, support, technical client relations, and in-house training related to all SaaS widgets deployed to 200+ auto dealership websites.
• Delivered exceptional user experiences, overhauling widget assets using JavaScript, HTML, CSS and Bootstrap, focusing on unifying visual identity with host sites.
• Reduced time-to-delivery by 50% by restructuring cross-company deployment pipelines.
• Enhanced client-experience with proactive communication and well-prepared proposals, backed by my expertise in HTML and CSS, as well as analytics and market research.
• Conserved 40 hours per month by automating toilsome tasks with Python and Selenium.

Memphis, TN

• Studied design patterns and developed full-stack applications using Git, GitHub, Java, Spring Boot, PostgreSQL, JavaScript, React.js, Node.js, CSS, and HTML.
• Met all deadlines and fulfilled client requirements while leading a team of 3 developers.
• Built multiple full-stack applications through 1-week sprints in Agile teams.
• Ensured version stability by reviewing, testing, and merging git branch pull requests.

Chicago, IL

• Studied web design, design thinking, visual communication and perception theory.

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