Mid-Level Front-End Developer

Grupo Fênix

. Build and maintain landing pages, advertorials, VSL pages, presell pages, checkouts, and upsell and downsell flows .

Posted 10/16/2026contractRemote • BrazilMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in front-end development with a strong focus on HTML5, CSS3, and modern JavaScript frameworks. Proficient in implementing tracking tools and optimizing web performance while ensuring responsive design and cross-browser compatibility.

Highest-signal resume keywords

HTML5CSS3Modern JavaScript (ES6+)ReactGoogle Tag Manager

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Responsive DesignDOM ManipulationFigma ImplementationA/B TestingPerformance Optimization

Soft Skills

OrganizationAutonomyLogical ReasoningTime Management

Tools & Technologies

GitMeta PixelGoogle AdsTikTokGA4GTMRedTrack

Industry Keywords

Conversion TrackingDataLayerUTMsPostbacksCore Web Vitals

Tech Stack

Tools & technologies

JavaScriptNext.jsReactVue.js

About the role

Key responsibilities & impact

Build and maintain landing pages, advertorials, VSL pages, presell pages, checkouts, and upsell and downsell flows
Convert Figma layouts into responsive, functional pages that accurately reflect the proposed design
Implement and validate pixels, tags, and tracking tools, including Meta Pixel, Google Ads, TikTok, GA4, GTM, and RedTrack
Configure and validate conversion events, UTMs, dataLayer, and postbacks for affiliate and payment platforms
Develop page variations for A/B testing while ensuring tracking integrity
Optimize page load speed and performance, considering Core Web Vitals and mobile devices
Ensure responsiveness, cross-browser compatibility, and the proper functioning of forms, buttons, scripts, and other elements
Create and maintain reusable templates and components to accelerate the development of new funnels
Identify and resolve technical issues that affect pages, tracking, or conversion rates
Use Git for version control and code maintenance
Collaborate with the Traffic, Copy, and Design teams to turn requirements into technical solutions

Requirements

What you’ll need

At least 3 years of proven professional experience in front-end development
Strong command of HTML5 and CSS3, including Flexbox, Grid, responsive design, and best practices for structuring interfaces
Solid knowledge of modern JavaScript (ES6+), DOM manipulation, events, forms, requests, and asynchronous operations
Hands-on experience with at least one modern framework, such as React, Next.js, or Vue
Experience implementing and validating pixels, tags, and conversion tracking
Knowledge of Google Tag Manager, dataLayer, UTMs, and postbacks
Knowledge of performance optimization techniques, such as lazy loading, image compression, and reducing third-party scripts
Ability to implement Figma layouts with visual accuracy and attention to detail
Experience with Git and code versioning best practices
Technical English for reading and understanding documentation for international tools and platforms
Organization, autonomy, logical reasoning, and the ability to work under tight deadlines and manage multiple demands simultaneously
Availability to work as an independent contractor

Benefits

Comp & perks

100% remote
Work in an international Direct Response operation focused on the nutraceuticals market
Direct involvement in building and optimizing pages used in performance marketing campaigns
Close collaboration with the Traffic, Copy, and Design teams
Dynamic, collaborative, and results-oriented environment
Opportunity to deepen your knowledge of technologies, tools, and strategies used in performance marketing