Merciv
Senior Frontend Engineer
$150K–$200K
New York City · On-site · Senior · Full-time · Posted Mar 3, 2026
- Experience
- 6-10+ years professional frontend development; 4+ years building complex production web applications with modern JavaScript frameworks; 2+ years with React in production.
About the job
Build and scale frontend experiences that make enterprise AI-powered consumer insights and data visualizations intuitive, actionable, and transparent.
What you'll do
- Build and optimize React interfaces for complex data visualizations, real-time updates, and AI interactions.
- Own frontend architecture and features from concept through testing and deployment; establish standards, review code, and mentor teammates.
- Collaborate with product, design, and AI teams to turn analytical outputs into accessible, user-friendly workflows.
What they ask for
- 6-10+ years of professional frontend development experience; 4+ years building complex production web applications with modern JavaScript frameworks; 2+ years using React in production.
- Expertise in HTML5, CSS3, modern JavaScript (ES6+), and TypeScript.
- Experience with state management, API integration, automated testing, and interactive data visualizations.
- Experience in fast-paced startup or high-growth product environments and ownership of significant frontend features end-to-end.
Nice to have
- Experience building data-intensive or analytics-focused applications, or familiarity with AI/ML interfaces and conversational UI patterns.
- Experience with Next.js or other React meta-frameworks.
Pay
$150K – $200K (base salary)
Tools
React, HTML5, CSS3, JavaScript (ES6+), TypeScript, Redux, Zustand, GraphQL
AI focus
Build interfaces for agentic AI interactions, including natural-language inputs, conversational flows, and transparent displays of AI reasoning.
Model-written summary · the original posting is authoritative