I’m Daniel Freire, a front-end web developer with 3+ years of experience building high-performance applications using Next.js, React, and TypeScript. I came into engineering from a digital marketing background, and that path still shapes how I approach UI decisions—always with user behavior, clarity, and measurable outcomes in mind. At Socialissimi, I translated Figma designs into production-ready components, built analytics pipelines and interactive dashboards, and improved performance and accessibility to meet WCAG 2.1 AA standards. I also enjoy working end-to-end—shipping features across the stack when needed—and I bring a strong data-driven mindset to both engineering and product work.…

Daniel Freire

I’m Daniel Freire, a front-end web developer with 3+ years of experience building high-performance applications using Next.js, React, and TypeScript. I came into engineering from a digital marketing background, and that path still shapes how I approach UI decisions—always with user behavior, clarity, and measurable outcomes in mind. At Socialissimi, I translated Figma designs into production-ready components, built analytics pipelines and interactive dashboards, and improved performance and accessibility to meet WCAG 2.1 AA standards. I also enjoy working end-to-end—shipping features across the stack when needed—and I bring a strong data-driven mindset to both engineering and product work.…

Available to hire

I’m Daniel Freire, a front-end web developer with 3+ years of experience building high-performance applications using Next.js, React, and TypeScript. I came into engineering from a digital marketing background, and that path still shapes how I approach UI decisions—always with user behavior, clarity, and measurable outcomes in mind.

At Socialissimi, I translated Figma designs into production-ready components, built analytics pipelines and interactive dashboards, and improved performance and accessibility to meet WCAG 2.1 AA standards. I also enjoy working end-to-end—shipping features across the stack when needed—and I bring a strong data-driven mindset to both engineering and product work.

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Skills

Experience Level

TypeScript
Expert
React JS
Expert
JavaScript
Expert
CSS
Expert
GitHub
Expert
HTML5
Expert
Tailwind
Expert
API
Expert
Web Design
Expert
GA4
Expert
Data Visualization
Expert
SEO
Expert
Figma
Expert
Django
Expert
Jira
Intermediate
SQL
Intermediate
Python
Intermediate
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Language

English
Fluent
Portuguese
Fluent

Work Experience

Software Developer | Front End at Socialissimi
July 1, 2023 - Present
Built pixel-accurate React components from Figma designs using TypeScript, streamlining the design-to-production workflow and reducing QA revision cycles. Developed Next.js API routes for behavioral analytics (click depth, session duration, funnel drop-off) and delivered faster product decision-making through internal dashboards. Created D3.js-based data visualization tools and dashboards for monitoring multiple business-critical KPIs in real time. Audited and optimized front-end performance (lazy-loading, rendering pipelines) using Lighthouse and WebPageTest, improving Core Web Vitals scores. Implemented accessible keyboard navigation and corrected ARIA/color issues to achieve WCAG 2.1 AA compliance. Added JWT authentication with secure token handling and role-based access control via Next.js middleware. Extended scope by shipping Django features end-to-end, including new REST endpoints.
Front End Developer at Socialissimi
July 1, 2023 - Present
Implemented analytics APIs using Next.js API routes to track user behavior and engagement metrics, providing actionable insights that inform product decisions and improve user retention by 25%. Translated 15+ complex Figma designs into pixel-perfect React components with TypeScript from spec to production, achieving 95% design accuracy and reducing QA revision cycles and UX back-and-forth. Optimized front-end assets and lazy-loaded images using DevTools, decreasing average page load time by 35% and elevating Core Web Vitals score from 65 to 90+. Automated WCAG 2.1 accessibility checks by integrating axe-core into the CI/CD pipeline and conducting biweekly audits, resolving 20+ critical issues per sprint and reducing accessibility-related support tickets by 60%.
Front End Developer (Remote) at Socialissimi
July 1, 2023 - Present
Created reusable component libraries with TypeScript, improving development efficiency by 30% and code consistency across projects. Integrated third-party APIs including payment gateways and analytics tools, enabling seamless user experiences for 50k+ monthly users. Implemented responsive designs using Tailwind CSS with mobile-first approach, increasing mobile user engagement by 25%. Conducted performance audits using Chrome DevTools and implemented optimization strategies, reducing load times by 40%. Delivered over 50 design layouts into pixel-perfect code with 95% accuracy and consistency with original designs.
Digital Marketing Specialist at ZANY Marketing
February 1, 2020 - June 1, 2023
Grew organic traffic from 5k to 25k monthly visitors in 8 months through strategic SEO implementation. Conducted comprehensive keyword research, identifying over 100 high-value keywords for on-page optimization, contributing to a 20% increase in organic traffic. Analyzed website traffic using Google Analytics, informing data-driven marketing strategies and resulting in a 15% improvement in conversion rates. Managed end-to-end digital marketing campaigns that generated 300+ qualified leads quarterly.

Education

Certificate at HuggingFace
January 1, 2025 - January 1, 2025
Certificate at Scrimba
January 1, 2024 - January 1, 2024
Certificate at freeCodecamp
January 1, 2022 - January 1, 2022

Qualifications

Fundamentals of Agents
January 1, 2025 - September 28, 2026
Advanced React
January 1, 2024 - September 28, 2026
Responsive Web Design
January 1, 2022 - September 28, 2026

Industry Experience

Software & Internet, Professional Services, Media & Entertainment