What are the responsibilities and job description for the Senior Frontend Engineer [React] (High Velocity & Analytics) position at Jobgether?
This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Frontend Engineer [React] (High Velocity & Analytics) in Brazil.
You will join a high-performance, distributed engineering environment focused on building advanced analytics and internal tooling systems for large-scale, data-intensive products. In this role, you will work on complex, high-visibility initiatives where frontend architecture, data visualization, and accessibility are critical to success. You will operate in a fast-paced setting where autonomy, clarity of execution, and technical depth directly impact delivery speed and product quality. Your work will focus on building robust, scalable React-based interfaces that transform large datasets into clear, actionable insights. You will collaborate closely with global backend and product teams, contributing to end-to-end system understanding and high-trust engineering execution. This is a role for a senior engineer who thrives in ambiguity, reduces friction in delivery, and raises the overall engineering bar. You will help shape human-centered, data-driven interfaces used in high-stakes decision-making environments.
\nYou will be responsible for building, optimizing, and maintaining high-performance frontend systems that power analytics and internal tools at scale:
- Design and implement complex, data-heavy UI components and dashboards using React and TypeScript
- Translate ambiguous business requirements into clear, scalable, and maintainable frontend solutions with minimal supervision
- Ensure high reliability and quality through strong testing practices, including unit, integration, and end-to-end testing (Jest, React Testing Library, Cypress)
- Validate and audit complex datasets from GraphQL and REST APIs to ensure accuracy in analytical outputs
- Build accessible, human-centric interfaces with a strong focus on usability and long-term maintainability
- Collaborate with backend engineers to support end-to-end debugging and full-stack traceability
- Leverage modern tools, including AI-assisted development, while maintaining strong architectural ownership and code quality standards
- Contribute to improving engineering velocity, reducing ambiguity, and strengthening frontend system design practices
Requirements
You are a highly experienced frontend engineer with strong technical depth, autonomy, and a proven ability to deliver in fast-paced, US-aligned environments:
- 6 years of professional experience as a frontend engineer in senior-level roles
- Expert-level proficiency in React and TypeScript, including hooks, state management (Redux/Context), and advanced typing patterns
- Strong experience building scalable frontend architectures for complex, data-driven applications
- Deep knowledge of testing methodologies, including unit, integration, and E2E testing (Jest, RTL, Cypress)
- Strong experience working with GraphQL and REST APIs, especially handling large and complex datasets
- Ability to work independently in ambiguous environments and translate requirements into structured solutions
- Excellent English communication skills (C1/C2), with experience collaborating with US-based stakeholders
- Familiarity with backend systems such as Node.js, NestJS, or PHP/Laravel for better full-stack understanding
- Strong systems thinking and architectural awareness in frontend design
- Nice to have: experience with data visualization tools (D3.js, Highcharts), CI/CD pipelines (GitHub Actions, GitLab CI), and Figma workflows
Benefits
- Remote-first position based in Brazil with LATAM-based collaboration
- Close alignment with US time zones (Central Time overlap)
- Long-term contract within a global, high-scale product environment
- Opportunity to work on high-impact analytics and internal tooling systems
- Exposure to complex, data-heavy frontend challenges at scale
- Collaborative international engineering culture with strong technical standards
- Opportunity to work with modern frontend stacks and advanced React architectures
- Flexibility within a distributed, remote engineering organization
How Jobgether works:
We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.
We appreciate your interest and wish you the best!
Why Apply Through Jobgether?
Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.
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