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

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

Mindset & Startup Fit

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

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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