Full-stack AI Engineer II, Assistant

$177K - $266KSan Francisco, CA, US Job type Full-time Role Engineering, Full stack Experience 1+ years Visa Will sponsor

About the role

What we9re working on: We9re a team of startup engineers working on a new product within Amplitude. Heres what drives us: Its crazy how little software has changed over the past 20 years. Its gotten a lot more powerful, but users still mostly do the same things 6 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. Were building an AI-powered personal chaperone for users, embedded into websites and apps. Its a chatbot, but its 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 6 think tour guide mode
• It can perform actions on behalf of users by using APIs and interacting with other agent

Were looking for an excellent product builder to join us - someone whos as excited as we are to build the next generation of UX and bring it to millions of users. What makes this role special?

• Immediate impact: The product youll 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 CommandAI and we embody startup energy.
• Killer team: We have >3 years of experience building production AI products. Youll 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 were doing it. Youre someone who enjoys working with other curious people.

What will you be doing?

• 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. Theres 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 - youll be testing out new models, techniques and libraries to chart the path forward.

Examples of everyday work:

• 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 whats 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.

Requirements

• 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 tradeoffs
• Stellar ownership of features and code quality
• Familiarity with LLMs/AI - either from work or your own exploration

Bonus:

• Youve been part of a small startup or skunkworks team and thrived in uncertainty
• Youve built agents using frameworks like Pydantic AI
• Youve worked deeply with TypeScript
• Youve worked with applications built on Temporal
• Youve built RAG pipelines before

Who We Are

The Company: 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: were tenacious in the face of challenges, we take the initiative to solve problems that drive our shared success, and we operate from a place of empathy and openness, seeking to understand many points of view. The Product: Amplitude is a digital analytics platform—we help companies capture data they can trust, uncover clear insights about customer behavior, and take faster action. This empowers teams to build better product experiences that drive business growth. Some of our benefit programs include:

• Excellent ​Medical, Dental and ​Vision insurance coverages, with 100% employer-paid premiums for employee ​Medical, Dental​ Vision on select plans
• Flexible time off, paid holidays, and more
• Generous stipends to spend on what matters most to you, whether that’s wellness (monthly), commuter transit/parking (monthly), learning and development (quarterly), home office equipment (annual), and much more
• Excellent Parental benefits including​: 12-20 weeks of Paid Parental Leave, Carrot Fertility Benefits/Adoption/Surrogacy support, Back-up Child Care support
• Mental health and wellness benefits including no cost employee access to Modern Health coaching & therapy Sessions and high quality physician office experience via One Medical membership (select U.S. locations only)
• Employee Stock Purchase Program​ (ESPP)​

Other fun facts about Amplitude:

• We were recognized in the Newsweek Excellence Index 2024.
• Our customers love us! They’ve said we’re the #1 product analytics solution for 15 quarters in a row on G2.
• We’re focused on growth. Check us out in Deloitte’s 2023 Technology Fast 500™
• We care A LOT about product innovation. Fast Company called us the #3 most innovative enterprise company in the world.
• We invest in our people. We offer mentorship programs, management training, and wellness initiatives.
• We give back to our communities. We give every Ampliteer a charitable giving grant and paid volunteer time off.
• We were founded in 2012, went public via a direct listing in September 2021, and are now trading under the ticker $AMPL.
• We’re a global and fast-growing team! We have employees around the world and offices in San Francisco (HQ), New York,

Vancouver, Amsterdam, London, Paris, Singapore, and Tokyo.

• Our mascot is the datamonster,

who loves to chow down on numbers, charts, and graphs. Amplitude provides equal employment opportunities (EEO). All applicants are considered without regards to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, or sexual orientation. --- ### Remote Work Mention: None explicitly mentioned; location specified as San Francisco. --- ### Skills mentioned: Programming languages & frameworks:   - Python (backend)   - React (frontend)   - TypeScript (bonus skill) Tools & technologies: - Pydantic AI (agent framework) - Temporal (application framework) - RAG pipelines (Retrieval-Augmented Generation pipelines) Other: - Familiarity with LLMs/AI --- ### Application URL: https://www.ycombinator.com/companies/amplitude/jobs/5jpKUcf-full-stack-ai-engineer-ii-assistant