Engineering case study
Modernized platform practices while improving delivery speed
Trengo · Aug 2021 - Jun 2024
A growing product codebase needed stronger architecture, faster CI/CD, safer releases, and better team standards.
Problem
Delivery friction came from build performance, legacy architecture, testing gaps, and inconsistent platform practices.
Constraints
- The product had legacy JavaScript and Laravel Mix surfaces
- Architecture work needed to support active product delivery
- Mobile performance had to be validated on realistic older devices
My Role
Led frontend implementation and architecture work while mentoring engineers and supporting hiring.
Decision
Modernize incrementally through feature flags, microfrontends, TypeScript standards, CI/CD optimization, and design-system tooling.
Trade-offs
- Incremental modernization took coordination but protected product momentum
- Shared standards required tooling and team adoption, not only documentation
Execution
- Implemented feature flagging and microfrontend architecture
- Moved build tooling from Laravel Mix to Webpack 5
- Improved GitHub Actions CI/CD and Webpack build performance
- Benchmarked and improved mobile performance on older Android devices
Outcome
GitHub Actions and Webpack pipelines became 8 times faster, and mobile performance on large data improved 5 times.
Lessons Learned
- Platform modernization works best when tied to measurable developer and user impact
- Architecture standards scale when backed by tooling, reviews, and mentoring
Technology Context
- Microfrontends
- TypeScript
- GitHub Actions
- Webpack 5
- Cypress
Related Achievements
Implemented high-performance microfrontend architectureHelped decouple frontend and backend concerns while modernizing the application architecture.Made Webpack build and GitHub CI/CD pipeline 8x fasterImproved build and delivery feedback loops through CI/CD and bundling optimization.Improved mobile performance on large data 5xBenchmarked on older Android devices and BrowserStack to improve real-world mobile performance.Implemented a monorepo feature-flagging systemAdded feature flagging to the monorepo to support safer product delivery and controlled rollout practices.