7 months ago
Paris, France or Barcelona, SpainSenior / Staff+
Responsibilities
- Own and evolve the architecture of Joko AI’s agentic system.
- Design and run evaluation and monitoring frameworks to measure performance and prevent regressions.
- Expand AI capabilities through web search, vector search, catalog lookups, and other integrations.
- Ingest, standardize, enrich, and manage a product catalog containing hundreds of millions of entries.
- Use transaction and browsing data to improve intent understanding and personalization.
- Prototype and ship new AI features, iterate with users, and incorporate feedback.
- Track new models, agentic frameworks, and research and translate them into product improvements.
- Fine-tune and optimize models for quality, latency, and cost.
- Improve the runtime and infrastructure to support hundreds of thousands of daily users with high availability and low latency.
- Collaborate with Product and Engineering from early concepts through full production rollout.
Requirements
- 5+ years of software engineering experience, including building and shipping production systems.
- Experience operating at a senior or staff level and owning ambitious projects from design through production.
- Ideally, experience building production AI systems used by real users.
- Deep familiarity with agentic frameworks such as LangChain, LangGraph, or equivalents.
- Familiarity with LLM observability tools such as LangFuse or equivalents, LLM APIs, and AI evaluation tooling.
- An AI/ML background or degree is a strong plus but not required.
- Comfort working across AI logic, infrastructure, and frontend prototyping.
- Ability to solve challenges involving latency, cost, hallucinations, and long-term memory.
- Fluent written and spoken English.
- Strong ownership, communication, experimentation, learning, and problem-solving skills.
Benefits
- Flexible remote work in France and Spain, with office or home options in Paris and coworking access and budget elsewhere.
- Ability to work from most countries for up to 3 months per year.
- Top-market compensation and equity for everyone.
- A half-day each week dedicated to learning and experimenting with AI tools.
- Yearly offsite, team-building budget, and monthly in-person gatherings.
- Contribution to a ClassPass subscription.
- Eight weeks of fully paid leave for the second parent.
- Full-time positions may receive additional listed benefits.
Categories
About Joko
Joko builds an AI shopping app that helps consumers find the right product at the best price, track prices, and earn cashback online and in-store. It powers recommendations with a large product catalog and shopping data, and monetizes through merchant partnerships and affiliate commissions. Founded in 2018 and headquartered in Paris, the privately held B Corp reports over 6 million users shopping across 10,000+ merchants.