New York, NY Senior Software Engineer

We are hiring a

Backend-leaning Full-Stack Software Engineer

with strong Python expertise and the ability to contribute across the stack when needed (React / TypeScript). You’ll work closely with our founding engineering team—particularly our current backend lead to take ownership of backend systems that power our digital twin engine and AI-driven pipelines.

This role is ideal for someone who thrives in early-stage startup environments, learns fast, wants wide scope and impact, and sees engineering as a craft—not just a job.

What You’ll Do

Own major components of our backend systems, with the goal of becoming the primary owner of the backend over time.

Build performant, production-grade backend features in Python.

Work with geometry, spatial data, simulation data, and large datasets.

Contribute to frontend components in

React + TypeScript

when needed (light / medium complexity).

Collaborate on data pipelines, GPU-related workflows, and LLM / AI-driven functionality.

Work across backend, frontend, and infrastructure in true startup fashion.

Ship fast while maintaining high engineering judgment—balancing speed, quality, and minimal viable complexity.

Work onsite in our

Williamsburg, Brooklyn office 4 days / week (5 optional) .

Technical Profile

5–10 years of experience preferred (exceptional 3+ years considered).

Strong backend engineering experience with

Python .

Experience with geometric, spatial, or simulation-related data is a strong plus.

Experience with

GPU computing ,

LLM / agentic systems , or

data-heavy pipelines

is a plus.

Comfortable contributing to frontend codebases using

React + TypeScript .

Some exposure to infrastructure (cloud, CI / CD, containers, DevOps basics) is a plus.

Preferably holds a

Computer Science

degree; CE or EE also acceptable.

Bootcamp-only or non-technical degrees are not a fit for this particular role.

Mindset & Startup Fit

Has worked at a

seed-stage or Series A startup

and understands startup velocity.

Hungry, curious, and not afraid to dive into new technology—even if you’ve never touched it before.

Learns fast, asks the right questions, and figures things out.

Wants to own systems end-to-end, not just complete tickets.

Thrives in ambiguity and builds with a product-driven mindset.

Wants to be part of a tight, highly skilled team where engineering is central to the company.

Candidates from the following areas tend to be a strong match :

Wireless engineering

Software for physical infrastructure / real-world modeling

Eino is building the world’s first Connectivity Digital Twin— a deeply technical, AI-driven simulation platform that models real-world environments and their connectivity layers.

We are a real AI company : not LLM-wrapper tooling, but deep tech. Our work spans geometry processing, spatial reasoning, GPU-accelerated simulation, data modeling, and agentic AI systems. Every engineer at Eino works on highly challenging problems and collaborates with a team of exceptional, experienced builders.

We are well-funded by strong investors, have real customers, and a clear roadmap to reshape how the world understands connectivity.

This is a rare opportunity for a hungry, entrepreneurial engineer to join a rocket-ship Seed / Series A startup at the ground level, help architect the core backend, and grow into the owner of critical product infrastructure.

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