Founding AI Engineer: Build Consumer Agent Tech

Wintermeyer Ventures; New York (NY); On-site; USD 150,000 - 250,000; Full time

Benefits offered by this job

Visa sponsorship

Job summary

Wintermeyer Ventures in New York, NY is seeking a founding engineer for an early‑stage consumer AI team to build agent systems and product features from architecture through launch. You will help shape a simple, engaging AI experience while improving the underlying infrastructure.

You’ll own features across a consumer chat app and its backend, collaborate with the founding team to unify chat, agents, tools, and app capabilities, and scale backend and database infrastructure for growth.

Qualifications

• Hands-on engineering with startup or independent/open-source projects.
• Experience building agentic systems with tool calling, memory, system prompts, and retrieval.
• Experience serving or fine-tuning open-source LLMs.
• Strong backend or full-stack skills for scalable databases and consumer products.

Responsibilities

• Build and improve the agent harness including tool use, memory, prompts, retrieval, and evaluations.
• Own features across a consumer chat app and its backend, from design through launch and iteration.
• Collaborate with the founding team to bring chat, agents, tools, and app capabilities into a cohesive product.
• Expand agent capabilities with virtual machines and tooling; develop backend and database infrastructure for scale.
• Deploy and optimize GPU infrastructure, including fine‑tuning and serving open‑source models.
• Balance latency, cost, reliability, privacy, and user experience across product and infrastructure decisions.

Skills

Full-stack

Backend

Distributed systems

Open-source

GitHub portfolio

Tools

PostgreSQL

Redis

Kubernetes

Docker

GPU infra

Job description

Wintermeyer Ventures in New York, NY is seeking a founding engineer for an early‑stage consumer AI team to build agent systems and product features from architecture through launch. You will help shape a simple, engaging AI experience while improving the underlying infrastructure.

You’ll own features across a consumer chat app and its backend, collaborate with the founding team to unify chat, agents, tools, and app capabilities, and scale backend and database infrastructure for growth.