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20 jobs similar to Senior / Lead Frontend Engineer (Next.js, React & Web Platforms) - Brazil

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Lead the decision-making process for creating a new front-end framework from scratch. Implement front-end architectural decisions on high-impact eCommerce projects, promote best practices, and ensure the scalability and performance of our applications. Define and maintain robust front-end architecture aligned with modern best practices.

SQLI helps major international brands create value through technology and digital innovation.

Global

  • Architect and build large-scale, modular front-end products that set new standards for performance and accessibility.
  • Elevate the team's front-end craft through insightful code reviews and by establishing patterns for highly componentized systems.
  • Transform complex design visions into elegant, functional experiences that balance aesthetic refinement with technical excellence.

Fueled is a leading digital strategy, design, and engineering agency that, united with 10up, is now the brand of their WordPress practice. They are a 300+ person team that has designed and built hundreds of digital products and experiences for top brands.

US

Build responsive, performant, and accessible web applications using React and Next.js. Translate UX/UI designs, user journeys, and requirements into reusable, maintainable, production-ready components. Contribute to front-end architecture decisions, coding standards, and best practices.

Robots & Pencils is helping to build a modern, unified digital experience platform for a large multi-venue hospitality and entertainment organization.

LATAM

  • Design, build, and maintain Next.js web applications.
  • Contribute to the evolution of shared front-end architecture.
  • Implement scalable, maintainable UI solutions aligned with business and user needs.

Xebia is a digital consulting company with over 5500 professionals globally, delivering technology and consulting for AI-driven digital transformation. Their culture is knowledge-worker focused, emphasizing in-depth expertise, value-led principles, and high-quality work.

Europe 6w PTO

  • Be part of a cross-functional, mission-driven, and self-organizing delivery team.
  • Develop and maintain user-facing features.
  • Focus on delivering solutions optimized for web performance & accessibility.

air up® have developed an innovative and world-first drinking system that brings flavour to simple tap water through scent alone.

Brazil

  • Design and implement user-facing features, ensuring technical feasibility of UI/UX designs.
  • Write clean, maintainable, and efficient code following best practices.
  • Participate in code reviews and contribute to team knowledge sharing.

We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.

$121,000–$160,000/yr
US

  • Build front-end web applications in a fully-remote engineering team.
  • Design, build, and maintain efficient, secure, reusable, and reliable code.
  • Partner with designers, product managers, and engineers to build new features and improvements.

Angel is the home of stories that amplify light and allows creators and audiences to form passionate communities around their creative projects.

US

  • Lead the design and development of user interfaces that drive data insights.
  • Build reusable, scalable frontend components and systems using modern frameworks and tooling.
  • Drive architectural discussions and make technical decisions that ensure code quality and performance.

Attentive is the AI marketing platform for 1:1 personalization redefining the way brands and people connect.

Global

  • Collaborate with designers to bring creative visions to life, including animations and interactions.
  • Develop performant, accessible UIs using React, Next.js, TypeScript, Tailwind CSS, and modern CSS.
  • Integrate analytics platforms (Google Analytics, PostHog) and CRM systems (HubSpot) into web applications.

Offchain Labs is a pioneer in blockchain scalability and security, transforming how the world interacts with decentralized applications. The company is backed by $124 million in funding and has demonstrated consistent execution with billions in secured value.

Latin America 3w PTO

  • Develop and enhance features for the main React/TypeScript platform
  • Build and maintain the Next.js marketing site, delivering engaging and responsive user interfaces
  • Rapidly prototype frontends for the growth team to test new ideas

Katapult is a nearshore software development agency that combines the best talent in LATAM with world-class execution and leadership experience, and an AI-first approach to product engineering. Katapult works with PMF+ startups and businesses in the United States with a team-augmentation model.

$180,200–$252,300/yr
US

  • Define the technical architecture for Reddit’s prototyping ecosystem and lead the strategy for transitioning from static designs to interactive, data-driven experiments.
  • Architect and maintain a robust, web-based (React, Next.js) prototyping environment that allows for dynamic swapping of screens and journeys for scaled A/B testing.
  • Partner closely with UXR to drastically reduce the time-to-insight for complex product questions by automating testing and building tools for deploying quantitative tests.

Reddit is a community of communities built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet.

$225,000–$300,000/yr
US

  • Define and lead the architecture of our frontend ecosystem, focusing on scalability, performance, and maintainability.
  • Improve developer velocity through standardized tooling, templates, build pipelines, and testing frameworks.
  • Collaborate with Product, Design, and Engineering teams to deliver cohesive, high-quality user experiences.

Orum’s AI-powered suite helps salespeople connect and sell. They are a remote-first team creating a future where work feels meaningful and connected.

$175,000–$200,000/yr
Unlimited PTO

Build rich, performant frontend experiences in React + TypeScript, including dashboards, traces, configuration flows, and real-time views. Collaborate with backend engineers on requirements, define API contracts, implement UI, and ship with metrics, logs, and alerts wired up. Lead frontend architecture decisions around routing, data fetching, caching, and client-side error handling.

Arize AI is the leading AI & Agent Engineering observability and evaluation platform, empowering AI engineers to ship high-performing, reliable agents and applications.

US India

Define the frontend architectural vision for complex products, design scalable component systems and UI frameworks, and translate product requirements into robust technical architecture. Lead performance optimization, accessibility, security, and scalability initiatives. Build reusable libraries and design systems, review code paths, and mentor senior engineers.

Emergent is reimagining how software gets built to democratize development, enabling anyone with an idea to become a creator.

  • Collaborate closely with product and design to build user-facing features at scale.
  • Support and unblock peers through async reviews, pairing, and mentorship.
  • Drive frontend best practices through deliverables, demos, and documentation.

Onebrief is collaboration and AI-powered workflow software designed specifically for military staffs. By transforming this work, Onebrief makes the staff superhuman.

$125,600–$157,000/yr
US

  • Collaborate with Product Managers, Designers, and Backend Engineers to design and implement user interfaces.
  • Drive the architecture and design of complex frontend systems using modern frameworks and libraries.
  • Optimize application performance and loading times, focusing on frontend efficiency and user satisfaction.

Natera is a global leader in cell-free DNA (cfDNA) testing, dedicated to oncology, women’s health, and organ health.

Europe 6w PTO

  • Collaborate closely with the frontend engineers to define and implement our frontend strategy.
  • Take shared ownership of our library architecture, ensuring performance, scalability, and reliability.
  • Build and maintain high-quality library components using React, TypeScript, and JavaScript.

Embeddable is an end-to-end developer platform for building seamless, lightning-fast customer-facing analytics directly into your product. The company launched in December 2023, received a €6m seed funding round in December 2024, and is currently a 20+ person team that has plans to scale significantly.

Brazil

  • Help drive frontend architecture to the next stage of Roof’s systems
  • Contribute to an early-stage company with engineering first culture
  • Writing unit, functional, and acceptance tests

Roofr is obsessed with providing its customers with essential sales tools. They have an amazing culture, strong financials, and best-in-class company metrics, offering its team significant growth, equity, and the opportunity to make a real impact.

  • Architect and evolve scalable, high-performing front-end systems in Angular 15+ that power the ClickUp platform.
  • Define standards, patterns, and best practices for reusable components, state management, and system performance.
  • Provide technical leadership and mentorship, guiding engineers on best practices, architectural trade-offs, and new front-end technologies.

ClickUp is building the first truly converged AI workspace, unifying tasks, docs, chat, calendar, and enterprise search.

Canada 3w PTO

  • Play a substantial role in the platform frontend engineering team.
  • Develop high quality, well designed, reusable, and well-tested system components, and contribute to the overall system designs.
  • Expand Cresta’s services beyond web and desktop applications to native and hybrid mobile applications.

Cresta is on a mission to turn every customer conversation into a competitive advantage by unlocking the true potential of the contact center. Their platform combines the best of AI and human intelligence. They have assembled a world-class team of AI and ML experts and are backed by top-tier investors.