Frontend Engineer, Sr.

About Merciv Merciv is an innovative AI and data analytics startup dedicated to transforming how businesses approach strategic intelligence. Our mission is to enable organizations to harness data effectively, generate actionable insights, and make informed decisions through advanced AI pipelines and dynamic forecasting mechanisms. We strive to create a world where every business decision is driven by the right data at the right time, seamlessly integrating AI capabilities with human judgment. Our technology connects disparate data sources into a unified intelligence layer, augmenting human decision-making with autonomous AI analysis, surfacing insights and opportunities often missed by traditional tools, and forecasting outcomes to help teams navigate uncertainty with clarity. Our solutions are designed to be robust, scalable, and intuitive, ensuring accessibility and usability across organizational levels. Having raised $14 million in seed funding, we have built a talented team rooted in a strong engineering culture, and after nearly two years in stealth mode, we are now launching publicly to revolutionize retail intelligence and deliver unparalleled value to our clients. About The Role Merciv is redefining how brands understand consumers through autonomous AI that proactively surfaces insights driving significant business decisions. Our platform powers some of the largest retail and consumer goods organizations worldwide by synthesizing signals from thousands of sources to reveal patterns and opportunities before competitors can identify them. As we expand our enterprise platform and introduce a self-serve tier, we are seeking a Senior Frontend Engineer to craft exceptional user experiences that make complex AI-powered insights intuitive and actionable. This role involves owning critical parts of our frontend architecture, building interfaces that enable users to explore vast datasets, understand nuanced consumer sentiment, and make confident decisions backed by AI reasoning. Working closely with product managers, designers, and AI engineers, you will create elegant, enterprise-grade experiences that are fast, accessible, and secure, while maintaining the agility of a startup environment. Your work will directly influence whether a brand leader can identify a critical consumer trend within seconds or miss out on a million-dollar opportunity, making this a highly impactful position. Qualifications 6-10+ years of professional frontend development experience 4+ years of building complex, production web applications using modern JavaScript frameworks 2+ years of hands-on experience with React in a production environment Proven track record of owning significant frontend features from conception to deployment Deep expertise in HTML5, CSS3, and modern JavaScript (ES6+) Strong understanding of TypeScript and type-safe development practices Experience with responsive design principles and cross-browser compatibility Proficiency in web performance optimization techniques Advanced React skills including hooks, context, and lifecycle management Experience with state management solutions such as Redux or Zustand Familiarity with modern CSS approaches and build tools (Vite, Webpack) Experience integrating RESTful APIs and GraphQL endpoints Proficiency with testing frameworks like Jest, React Testing Library, or Cypress Experience building interactive data visualizations (D3.js, Recharts, Chart.js) Strong problem-solving skills and debugging across browsers and devices Excellent communication and collaboration skills Ability to work independently in a fast-paced, high-growth environment Responsibilities Design and implement high-performance, elegant React components that simplify complex AI insights Own and evolve critical parts of the frontend architecture to support scaling from hundreds to thousands of active users Collaborate with product managers, designers, and AI teams to translate analytical outputs into intuitive visualizations and workflows Establish coding standards, conduct code reviews, and mentor team members on best practices Optimize application performance to ensure sub-second load times and smooth interactions Implement pixel-perfect designs in partnership with UX/UI designers, ensuring usability and accessibility Take ownership of feature development from requirements gathering to deployment Build innovative interfaces for interacting with AI systems, including natural language and conversational flows Write comprehensive tests, debug across browsers and devices, and maintain high code quality standards Contribute to product strategy discussions, providing frontend expertise to influence development directions Benefits Competitive salary within the range of $150,000 – $200,000 Equity participation as an early team member Comprehensive health, dental, and vision insurance plans Life insurance coverage Commuter benefits Opportunities for professional growth through conferences and courses Flexible work environment with autonomy and ownership Collaborative culture fostering innovation and creativity Impactful work that directly influences Fortune 500 brands Equal Opportunity Merciv is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, religion, color, national origin, sex, sexual orientation, gender identity, age, veteran status, disability, genetic information, or any other legally protected characteristic. We believe that diverse teams foster innovation and are essential to our success.