Daniel Freire

At Socialissimi, I translate Figma designs into pixel-accurate React components with TypeScript and build Next.js API routes that feed behavioral analytics into internal dashboards. That work cut time-to-insight for product decisions by about 40%.

I developed D3.js dashboards for 9 business-critical KPIs across 3 internal teams, replacing manual weekly reporting. I also optimized front-end assets and rendering pipelines, raising Core Web Vitals scores from the mid-60s to 90+.

At Socialissimi, I rebuilt keyboard navigation and focus management and corrected contrast and ARIA issues to achieve WCAG 2.1 AA compliance. I’ve also implemented JWT authentication and role-based access control, and extended my front-end work to include REST endpoints.

Before moving into engineering, I worked in digital marketing at ZANY Marketing, using analytics, A/B testing, and funnel analysis to improve landing-page conversion rates by 15%. That background informs how I approach UI decisions, and I’ve also built projects including MuraRyu and the AI language-learning assistant PollyGlot.