Merciv is transforming how brands understand consumers through autonomous AI that doesn’t just analyze data — it proactively surfaces insights that drive million-dollar decisions. Our platform powers some of the largest retail and consumer goods organizations in the world, synthesizing signals from thousands of sources to reveal patterns and opportunities before competitors see them coming.
As we scale our enterprise platform and launch our self-serve tier, we need a Senior Frontend Engineer who can craft exceptional user experiences that make complex AI-powered insights feel intuitive and actionable. This is your chance to build the interface that puts autonomous consumer intelligence into the hands of brand leaders, researchers, and marketers.
You’ll own critical parts of our frontend architecture, building the UI that enables users to explore millions of data points, understand nuanced consumer sentiment, and make confident decisions backed by AI reasoning. Working closely with our product, design, and AI teams, you’ll create elegant experiences that transform dense analytical outputs into clear, compelling narratives.
This is a hands-on role where you’ll build the interactive components that enterprise brands rely on daily to stay ahead of market shifts. In this role, you’ll be the architect of experiences that must be enterprise-grade (fast, accessible, secure) while maintaining startup agility. Your work directly impacts whether a brand leader can understand a critical consumer trend in seconds or gets lost in data — a difference measured in millions of dollars of opportunity.
What You’ll Do
Build Exceptional User Experiences: Design and implement elegant, high-performance React components that make complex AI insights feel simple and actionable
Architect for Scale: Own critical parts of our frontend architecture as we grow from hundreds to thousands of daily active users across Fortune 500 enterprises
Collaborate Cross-Functionally: Partner with product managers, designers, and AI engineers to translate sophisticated analytical outputs into intuitive visualizations and workflows
Drive Frontend Excellence: Establish coding standards, conduct rigorous code reviews, and mentor team members on modern frontend best practices
Optimize Performance: Ensure sub-second load times and smooth interactions even when rendering complex data visualizations and real-time updates
Champion User-Centric Design: Work closely with UX/UI designers to implement pixel-perfect designs while advocating for usability and accessibility
Own Feature Development: Take features from concept to production, including requirements gathering, technical design, implementation, testing, and deployment
Enable AI Interaction: Build innovative interfaces for users to interact with agentic AI systems, including natural language inputs, conversational flows, and transparent reasoning displays
Ensure Quality & Reliability: Write comprehensive tests, debug across browsers and devices, and maintain high code quality standards for enterprise customers
Shape Product Direction: Contribute to product strategy discussions, bringing frontend expertise to inform what we build and how we build it
Core Requirements
Experience
6-10+ years of professional frontend development experience
4+ years building complex, production web applications with modern JavaScript frameworks
2+ years with React in production environments
Experience working in fast-paced startup or high-growth product environments
Track record of owning significant frontend features end-to-end
Technical Skills
Frontend Fundamentals
Expert-level knowledge of HTML5, CSS3, and modern JavaScript (ES6+)
Deep understanding of TypeScript and type-safe development practices
Strong command of responsive design principles and cross-browser compatibility
Expertise in web performance optimization techniques (lazy loading, code splitting, caching)
React Ecosystem
Advanced React proficiency including hooks, context, and component lifecycle
Experience with state management solutions (Redux, Zustand, or similar)
Knowledge of React ecosystem tools (React Router, React Query, etc.)
Understanding of React performance optimization and rendering patterns
Modern Development Practices
Strong expertise in modern CSS approaches (CSS Modules, Styled Components, Tailwind, or similar)
Proficient with build tools and bundlers (Vite, Webpack, or similar)
Experience with version control (Git) and collaborative development workflows
Familiarity with CI/CD pipelines and automated testing frameworks
API Integration & Data Handling
Experience integrating RESTful APIs and GraphQL endpoints
Understanding of asynchronous JavaScript and promise-based workflows
Ability to handle complex data transformations and state management
Experience with WebSocket or real-time data streaming
Testing & Quality
Proficiency with testing frameworks (Jest, React Testing Library, Cypress, or similar)
Experience writing unit, integration, and end-to-end tests
Understanding of test-driven development practices
Strong debugging skills across browsers and devices
Data Visualization
Experience building interactive data visualizations (D3.js, Recharts, Chart.js, or similar)
Ability to translate complex datasets into clear, compelling visual stories
Understanding of visualization best practices and accessibility
About Merciv
Merciv is an AI-native brand and retail intelligence platform that unifies every source of consumer data brands interact with - internal research, syndicated data, social signals, and more - into a single source of truth, with full auditability into how every insight was reached. The result: smarter decisions around brand strategy, marketing, innovation, inventory optimization, and forecasting that make a real impact on a brand's bottom line. We just closed a $14M seed round, spent a year in stealth as an engineering-heavy group, and are now building out the go-to-market team.
We've proven the product with Fortune 500 clients. Now we're opening it up. We're launching a PLG motion - starting with Pulse, a free consumer product with a credit usage monetization path- to bring Merciv to every brand, not just the ones with enterprise research budgets. This hire is the first bet on that motion.
