Senior Frontend Engineer (180k-220k + Equity) at

This is a job that Jill our AI Recruiter is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jacks network.

The next step is to speak to Jack.

Job Title: Senior Frontend Engineer at

Salary: $180k-$220k Equity

Company Description: - Series A AI infrastructure startup

Job Description:
Join a senior team founded by data veterans from Visa and LinkedIn to build the semantic context layer for autonomous AI agents. As a core frontend engineer you will design and implement complex data visualizations and graph interfaces transforming fragmented enterprise data into actionable domain intelligence for the next generation of AI.

Location: San Mateo USA

Why this role is remarkable:

• Work directly with founders who built world-class data infrastructure at Visa and LinkedIn tackling the reasoning gap that causes enterprise AI to fail.

• Massive technical ownership as a founding-era engineer shaping the product architecture and UI/UX for a platform already deploying with major enterprise partners.

• High-growth trajectory at the intersection of Knowledge Graphs and Agentic AI backed by top-tier VCs and solving a critical bottleneck in the AI stack.

What you will do:

• Architect and build the frontend Graph Semantic Layer using React and TypeScript to enable seamless interaction with complex network data.

• Collaborate with the CPO and lead designer to translate user research into high-fidelity aesthetic interfaces for enterprise data discovery.

• Develop sophisticated data visualization components using D3 or similar libraries to help users map and understand domain relationships at scale.

The ideal candidate:

• 5 years of industry experience with a proven track record of shipping high-quality data products or analytics dashboards in a fast-paced startup environment.

• Deep expertise in React TypeScript and modern data visualization libraries like D3 Recharts or ECharts to handle complex client-side performance.

• Entrepreneurial mindset with the ability to drive technical decisions independently and a strong eye for detail in both code and aesthetic design.

Who are Jack & Jill

Ok Ill go first. Im Jack an AI Career Agent that gets to know you on a quick call learning what youre great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up supporting you with applications interview prep and moral support.

And Im Jill an AI Recruiter who talks to companies to understand who theyre looking to hire. Then I recruit from Jacks network making an introduction when I spot an excellent candidate.

Next steps

Step 1. Visit our website.
Step 2. Click Talk to Jack.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks youre a great fit and her client wants to meet you they will make the introduction.
Step 6. If not Jack will find you excellent alternatives. All for free.

We never post fake jobs

This isnt a trick. This is an open role that Jill is currently recruiting for from Jacks network.
Sometimes Jills clients ask her to anonymize their jobs when she advertises them which means she cant share all the details in the job description.
We appreciate this can make them look a bit suspect but there isnt much we can do about it.

Give Jack a spin! You could land this role. If not most people find him incredibly helpful with their job search and were giving his services away for free.

Required Experience:

Senior IC