Company
River
Annual salary
$150k – $230k/yr
Location
New York, NY
Listed
53d ago
- Experience:
- 2 to 5 years
- Workplace:
- 4 days in-office in New York, NY
- Equity:
- 0.25-1%
Hybrid in New York, NY.
Send us your LinkedIn and CV. If your experience fits, we'll introduce you to the recruiter filling this role.
Apply for a referral →The recruiter emails you before anything happens and may suggest other jobs that suit you better.
About this Role
We are looking for a Product Engineer with 2-5 years of experience to join River as the first engineering hire outside the founding team. You'll build the AI voice agents that run live B2B sales calls, from backend services to browser-use demos, shipping to production weekly and working directly with the founders at a company that just turned on revenue and is scaling fast.
What you need
- 2-5 years of professional software engineering experience with shipped production software
- Strong TypeScript/JavaScript skills, particularly on the backend (Node.js, Next.js, Postgres)
- Hands-on experience building with LLMs or real-time applications
- High ownership mindset, can independently find problems, make decisions, and ship without hand-holding
- Must be based in or willing to relocate to New York City (in-office role)
What will you be doing?
Building backend services and APIs behind live AI sales calls (session state, integrations, data pipelines)
Developing the browser-use agent that navigates and demos real products live while the AI talks to prospects
Working directly with design partners to shape the product, understanding their needs and building custom solutions that feed back into core product
Building LLM-powered workflows: prompts, tool use, and agentic flows the agent follows during live demos
Shipping UI in Next.js/React where needed, watching real calls, and iterating fast
Frequently Asked Questions
How do I apply for the Product Engineer (Full-Stack) (US) role at River? +
Use the Apply for a referral button on this page to send us your LinkedIn and CV. If your experience fits, we'll introduce you to the recruiter filling this role. They'll email you to check you're interested, then put you forward for this job or others that suit you better. It's free.
What does this River role pay? +
The listing gives $150k – $230k/yr.
Is this role remote? +
The listing gives the location as New York, NY. 4 days in-office in New York, NY.
Related Roles
Browse all startup roles
Salaried roles at startups, AI companies and established businesses, all filled by referral. One application covers every role.
View all startup roles →