Tim Elfelt is a Senior Software Engineer and full-stack generalist with 12 years of experience building ROI-focused web platforms, marketing systems, and cloud infrastructure from Milwaukee. He blends front-end frameworks (Angular, Vue) and Node/NestJS backends with SQL and MongoDB, and routinely architects CI/CD, containerized deployments and AWS automation for production reliability. Tim pairs deep analytics and experimentation expertise—A/B/n, multivariate testing, Google Analytics, Segment and Redshift—with practical growth tactics like SEO, PPC and email marketing to translate data into measurable improvements. As a former CTO and long-time contributor to open-source projects such as angulartics (enhancing analytics for Angular apps), he moves fluidly between hands-on coding and technical leadership. He’s equally comfortable refactoring SaaS architectures and configuring SOC 2–grade internal IT, reflecting a rare combination of marketing-driven product sense and systems-level ops skill. Colleagues describe him as a creative problem solver who prioritizes testing and measurable impact over technical novelty.
12 years of coding experience
17 years of employment as a software developer
Business Administration - Information Technology Management Business, Business Administration - Information Technology Management Business at Saint Louis University
Contributions:9 releases, 174 commits, 68 PRs in 4 years 4 months
Contributions summary:Tim focused on enhancing the Angulartics library by implementing features to improve analytics tracking. They added functionality to record complete paths for non-Angular pages, fixed component.io-related console errors, and adapted the library to use a new Segment.io method. Furthermore, they released several versions, indicating a role in maintaining and improving the library. Their work demonstrates a deep understanding of the library's core functionality and analytics integration.
The MEAN stack uses Mongo, Express, Angular(6) and Node for simple and scalable fullstack js applications
Role in this project:
Full-stack Developer
Contributions:21 commits, 59 PRs, 14 pushes in 1 year 5 months
Contributions summary:Tim focused on refining the MEAN stack application. They modified the build process to ignore less partials, configured the CPU count for server performance, and updated i18n paths. Additionally, the user modified core user services to emit the user object on login and removed hardcoded login paths. They added sticky options for socket sessions.
expressmongo-expressmongoosemongodbjavascript
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Tim Elfelt - Senior Software Engineer at ParetoHealth