Senior Frontend Engineer

Newfold Digital

. Architect and build high-performance, production-grade user interfaces with React, Redux or similar state management, and TypeScript .

Posted 9/24/2026full-timeRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building high-performance user interfaces using React, Redux, and TypeScript, while integrating AI features and ensuring code quality through established standards. Proven ability to mentor engineers and drive technical outcomes in fast-paced environments.

Highest-signal resume keywords

ReactReduxTypeScriptAI IntegrationComponent Libraries

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaScript (ES6+)HTML5CSS3REST APIsMicroservices ArchitectureJestCypressDesign SystemsPerformance OptimizationScalability

Soft Skills

MentoringCollaborationProblem-SolvingCommunicationAdaptability

Tools & Technologies

Next.jsAI-Powered FeaturesContinuous DeliveryIterative Releases

Industry Keywords

SaaSConsumer PlatformCode ReviewSecurity ComplianceGenerated-Code Review

Tech Stack

Tools & technologies

CypressJavaScriptJestMicroservicesNext.jsReactReduxTypeScript

About the role

Key responsibilities & impact

Architect and build high-performance, production-grade user interfaces with React, Redux or similar state management, and TypeScript
Use AI across the delivery lifecycle and establish guardrails for generated-code review, provenance, licensing, and customer-data prompts
Design and build front-end interfaces integrating AI-powered features such as chat, content generation, and smart recommendations
Own performance, scalability, and reliability of high-traffic customer-facing applications
Partner with product, design, and backend engineering teams to take features from concept to production
Set and enforce frontend engineering standards for component reuse, design-system consistency, testing coverage, and code review
Mentor mid-level and junior engineers on architecture, debugging, and modern React patterns
Drive continuous delivery and iterative releases based on real user feedback

Requirements

What you’ll need

5+ years building and shipping modern, production-grade web applications at scale
Deep expertise in React, Redux/modern state management, TypeScript, JavaScript (ES6+), HTML5, and CSS3
Experience using AI across the delivery lifecycle, selecting models for appropriate problems, reviewing AI-generated code, and establishing AI guardrails
Knowledge of generated-code review expectations, provenance and licensing checks, customer-data prompt boundaries, and security or compliance review requirements
Experience integrating REST APIs and working within microservices-based architectures
Experience with Jest/Cypress testing frameworks
Experience building or maintaining component libraries and design systems
Track record of owning technical outcomes end-to-end in ambiguous, fast-moving environments
Experience operating in a high-scale SaaS or consumer platform environment
Next.js experience is a bonus
Prior work integrating LLM-powered or AI-driven product features is a bonus

Benefits

Comp & perks

Work-life balance and a culture that respects employees' time
Culture of belonging with 20+ affinity groups connecting employees globally
Meal Voucher or Food Voucher worth R$44.55 per working day
Comprehensive health and dental insurance with no employee co-pay
Well-being program including Gympass, online meditation, and telemedicine
Access to a pet health insurance partnership
Educational platform with undergraduate and graduate degrees, language courses, and access to 100+ educational institutions at affordable rates
Life insurance coverage
Free website hosting
Mentorship, new challenges, and real career growth