Senior Software Engineer

3 days ago

New York, New York, United States Moonshot AI Full time $120,000 - $200,000 per year
Why Moonshot AI?

Imagine websites that rebuild themselves on autopilot to sell more, convert better, and grow faster.
At Moonshot AI, we're making that happen — merging generative AI, large-scale data pipelines, and experimentation into a self-evolving web.

We're a well-funded, very early-stage startup with a massive vision. Joining now means you're not just an employee — you're helping set the technical and cultural DNA of the company. If you've ever wanted the autonomy of a founder with the backing of top-tier investors, this is it.

What You'll Build & Achieve

As our Senior Fullstack Engineer, you'll be hands-on across the stack — designing, building, and scaling systems that power our AI-driven platform. Expect autonomy, speed, and a ton of ownership.

  • Architect and build scalable systems — from backend APIs to frontend dashboards — that process tens of millions of web events per day.

  • Design large-scale data infrastructure that explains how websites are built, why they perform the way they do, and how to optimize them.

  • Train and integrate LLMs into production to automatically hypothesize, generate, and validate website variants.

  • Shape engineering culture & practices — your fingerprints will be all over our tech stack, architecture, and team processes.

  • Experiment, prototype, and iterate — research + product + AI + scale, all at once.

This isn't about maintaining yet another SaaS app — it's about building an AI engine that redefines how digital products are created.

Who We're Looking For

  • A software craftsman — you write clean, scalable code and know how to ship at speed.

  • 5+ years fullstack experience (Python, JS, AWS preferred, but not a blocker).

  • Experience leading teams or driving major projects.

  • Background in CS, EE, Math, or equivalent hands-on mastery.

  • An AI enthusiast who wants to build with LLMs and shape how they're applied in the real world.

Bonus Points:

  • Startup experience (you thrive in zero-to-one).

  • Experience training or deploying ML models in production.

At Moonshot, culture isn't fluff — it's how we win

  • Curiosity & Growth → We challenge assumptions, ask big questions, and push for mastery.

  • Low Ego → No ivory towers — everyone gets their hands dirty.

  • Ownership → You own outcomes, not just outputs. Shipping is step one; impact is the goal.

  • Trust → Radical transparency and accountability, even when it's hard.

  • Agility → We move fast, test faster, and aren't afraid to pivot.

  • This Is Your Company → Ideas fuel breakthroughs. We're all builders here.

  • Enjoy the Ride → Startups are a rollercoaster — we create good vibes and celebrate wins together.

What We Offer

  • Competitive salary

  • Meaningful equity — real ownership in Moonshot AI's success.

  • Full health coverage (medical, dental, vision) for you + your family.

  • Unlimited PTO — we trust you to take the time you need.

  • Office-first culture (4 days/week) — Midtown Manhattan, in the middle of it all.

  • Work directly with the founding team — your impact is immediate, visible, and career-defining.

  • Backed by top investors in NYC, SF, and TLV.

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