Senior Software Engineer

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.