Senior AI Engineer

Cosuno

2d•Remote

About The Position

Your mission Join our AI team and build the intelligent systems at the core of Cosuno's platform. AI Agent Development: Build and improve our agentic system that orchestrates multi-step reasoning to navigate the complex, often messy tendering workflow. Ship end-to-end into the product: Own features from model/agent through API to the TypeScript front-end — backend service, API, and the integration into the web app. Ranking, Search & Retrieval: Iterate on the ranking and retrieval systems that power subcontractor matching and marketplace search. Price Prediction: Improve models that estimate fair pricing for construction work, helping users evaluate bids and make better procurement decisions. Experimentation & Evaluation: Design offline evals, run online A/B tests, and drive metrics-led iteration. Collaborate across teams: Work with Product, Engineering, and Data to translate business problems into shipped ML/AI features. Maintain production ML & AI: Monitoring, alerting, and continuous improvement of everything we deploy.

Requirements

Strong Python: You have 5+ years writing production-grade Python. You write clean, well-structured code.
TypeScript, React, Node: Non-negotiable. You're comfortable shipping into our web app end-to-end — front-end, backend service, API.
End-to-end product delivery: You've shipped features (not just models) into a production web app and owned the integration from research code to real users.
LLM application depth: You have deep hands-on experience building and deploying LLM/agent systems — RAG, tool use, multi-step reasoning, evals.
Backend engineering skills: You design APIs, data pipelines, and services.
Product mindset: You're comfortable with ambiguity and can judge when something is good enough to ship.
Sharp problem solver: You look at a complex system, quickly identify what matters, and decide what to do next.
Bias for action: When you're unsure something will work, your instinct is to find out with data rather than keep wondering.

Nice To Haves

Comfort with 'classical' ML foundations
Experience building search/ranking/recommendation or price prediction systems

Responsibilities

Build and improve our agentic system that orchestrates multi-step reasoning to navigate the complex, often messy tendering workflow.
Own features from model/agent through API to the TypeScript front-end — backend service, API, and the integration into the web app.
Iterate on the ranking and retrieval systems that power subcontractor matching and marketplace search.
Improve models that estimate fair pricing for construction work, helping users evaluate bids and make better procurement decisions.
Design offline evals, run online A/B tests, and drive metrics-led iteration.
Work with Product, Engineering, and Data to translate business problems into shipped ML/AI features.
Monitoring, alerting, and continuous improvement of everything we deploy.