Senior Front-end Lead Santiago

We are seeking a seasoned frontend leader with a proven track record delivering enterprise SaaS analytics platforms. You should bring: 5+ years of React experience, with at least 2+ years using TypeScript. Expert-level knowledge of React performance optimization and long-term maintainability. Hands-on experience with data-heavy applications and virtual scrolling techniques. Proven experience with AG Grid or similar data grid libraries in large-scale enterprise contexts. Strong understanding of state management (Redux, Zustand, or Context API). Experience leading frontend teams and mentoring developers, with a history of delivering polished, production-grade software. Track record of delivering enterprise SaaS applications with measurable impact. Nice-to-have: analytics/BI platform experience, WebSocket real-time updates, familiarity with Plotly/D3.js, micro-frontend architectures, Azure DevOps and CI/CD pipelines. Act as the senior frontend architect for the analytics platform, owning the design and implementation of Reports and Dashboards. Lead the transition from legacy codebases (jQuery/Bootstrap) to a modern React/TypeScript stack across core analytics modules. Directly manage frontend contractors during the transition and guide the long-term frontend roadmap, with the opportunity to build and lead a scaling team. Implement AG Grid for high-performance data tables handling massive datasets (millions of rows) with smooth paging and virtualization. Build a reusable component library using shadcn/ui and Tailwind CSS to ensure consistency and rapid delivery. Integrate with Plotly for advanced data visualizations and analytics storytelling. Optimize UI performance to achieve sub-2-second dashboard load times and snappy interactions. Establish frontend best practices, testing standards, and accessibility considerations, collaborating with UX to simplify complex analytics workflows. Collaborate with product, data, and backend teams to align on requirements, APIs, and data models. Leverage AI development teals such as ClaudeCode, Codex to increase development productivity Krunchbox is scaling a global SaaS platform that empowers supplier-retailer collaboration through fast, reliable analytics. You will drive the complete rebuild of the analytics UI, transitioning from legacy jQuery/Bootstrap to a modern React/TypeScript stack. As the senior frontend leader, you’ll architect and implement the Reports and Dashboards systems, with potential to establish and lead a frontend team as the platform grows. The project emphasizes high-performance data visualization, robust state management, and an intuitive UX for complex analytics workflows, enabling 1000+ enterprise clients to derive actionable insights in real time. Competitive compensation package. Comprehensive health and benefits coverage. A predominantly in-person, collaborative work environment located in Mexico City to encourage fast iteration and real-time problem solving. Opportunity to scale and lead a global SaaS platform that solves real-world customer challenges. A direct, impactful role in shaping the future of AI-powered supplier-retailer collaboration. Experience working on analytics/BI platforms and data visualization libraries; familiarity with real-time data streaming; prior exposure to micro-frontend architectures; comfort working in fast-paced, collaborative environments; strong communication and leadership skills to mentor and inspire a growing frontend team.