Fullstack Engineer II, AI

AI Product Engineer II, Assistant (Full Stack)

Join to apply for the AI Product Engineer II, Assistant (Full Stack) role at Amplitude.

Amplitude is the leading digital analytics platform, helping over 4,300 customers—including Atlassian, Burger King, NBCUniversal, Square, and Under Armour—build better products and digital experiences. With powerful AI Agents embedded across our platform, teams can analyze, test, and optimize user experiences faster than ever. Ranked #1 across multiple categories by G2, Amplitude is the best‑in‑class solution for product, data, and marketing teams.

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We’re a team of startup engineers working on a new product within Amplitude. It’s crazy how little software has changed over the past 20 years. It’s gotten a lot more powerful, but users still mostly do the same things – find the right page, find the right button, google how to do something, etc. We believe software should flex to meet users where they are rather than the other way around.

We’re Building An AI‑powered Personal Chaperone For Users, Embedded Into Websites And Apps. It’s a Chatbot, but it’s a lot better in a few ways:

• It uses AI to personalize responses to every user, leveraging the power of Amplitude data.
• It can show users around with a cursor – think “tour guide” mode.
• It can perform actions on behalf of users by using APIs and interacting with other agents.

• Immediate impact:
  The product you’ll be working on has real customers that are getting real value from it – no AI vaporware.
• High velocity:
  No sitting in meetings waiting for direction – we make decisions quickly and are always shipping. Our team came over from Command
  
  AI and we embody startup energy.
• Killer team:
  We have >3 years of experience building production AI products. You’ll get to learn how real‑world AI applications are made, deployed, monitored and scaled.
• Data moat:
  Amplitude has the largest repository of behavioral data in the world.
• We keep it light:
  We build cool stuff and have fun while we’re doing it. You’re someone who enjoys working with other curious people.

• Owning the product:
  Our team is hyper‑focused on building a great product – this includes using the product, listening to customer feedback, and surfacing ideas for where we can improve. There’s no engineering vs. product fences here – everyone is a product owner.
• Shipping features:
  Own full‑stack features end‑to‑end: from ideation to design to implementation.
• Exploring the frontier: AI is constantly evolving – you’ll be testing out new models, techniques and libraries to chart the path forward.

• Pair with our AI Engineering Lead to debug why an agent gave out a bad answer – and design a clever retrieval fix that solves the edge case.
• Build a pipeline that automatically spots blind spots in a knowledge base and automatically fills in the missing piece.
• Experiment with new frontier models and libraries, then present back to the team on what’s hype vs. what we should ship next.
• Jump into a customer debug session with a PM, see how an agent failed in the wild, and ship a fix that same day.

• Experience building full‑stack features and applications.
• Experience with relevant technologies (we use Python on the backend and React for the frontend).
• Strong product intuition – proactively identify improvements without being asked.
• Comfort with moving fast and making smart trade‑offs.
• Stellar ownership of features and code quality.
• Familiarity with LLMs/AI – either from work or your own exploration.

• You’ve been part of a small startup or skunk works team and thrived in uncertainty.
• You’ve built agents using frameworks like Pydantic AI.
• You’ve worked deeply with Type Script.
• You’ve worked with applications built on Temporal.
• You’ve built RAG pipelines before.

Amplitude is filled with humble, life‑long learners who are eager to help one another and the company succeed. Our values of growth mindset, ownership, and humility are core to the way we work: we’re tenacious in the face of challenges, we take the initiative to solve problems that drive our shared success, and…