Senior AI Architect: Real-Time Mahjong Engine & Explanations

Neurons Lab; Warszawa; On-site; PLN 180,000 - 240,000; Part time

Job summary

Neurons Lab seeks a Hands-on Tech Lead to build an AI Mahjong companion for an online game. You will design the mahjong-playing algorithm, manage end-to-end architecture (game model + LLM layer), and ensure a strict 2-second move latency while coordinating with the client and product team.

Role demands deep ML/AI engineering experience at scale, with a strong track record shipping AI inside live products, and AWS/cloud experience. This is a 3-month, 0.5 FTE engagement, based in Warsaw, Poland.

Qualifications

• Hands-on ML/AI engineering at production scale.
• Shipped an AI system inside a live product with hard latency limits.
• Cloud hyperscaler experience (AWS preferred).
• Technology consulting / client-facing delivery background.

Responsibilities

• Design and build the mahjong-playing algorithm: choose and defend the approach, train, evaluate, and ship it.
• Own the technical architecture end to end: game model + LLM reasoning layer, valid-action mask, win detection, and the API contract with the client’s game bridge.
• Hit the 2-second response budget: design and measure inference path, batching, and caching; maintain a latency buffer for client-facing metrics.
• Define required data/events from the client (hand histories, event streams); build training/calibration pipeline.
• Build and run evaluation harness: measure play strength against client references and validate explanations.
• Stand up LLM observability with Langfuse (async logging, N+1 batching).
• Take over context from supervisor and lead sprint work with the AI Engineer; collaborate with client’s Product Owner in a scrum process.
• Front the client’s CTO and engineers on technical decisions; explain trade-offs clearly.

Skills

Python

ML engineering

LLM integration

Low-latency

AWS deployment

Technical leadership

Game AI

CI/CD

Tools

Langfuse

MCTS

Self-play

AWS

Job description

Neurons Lab seeks a Hands-on Tech Lead to build an AI Mahjong companion for an online game. You will design the mahjong-playing algorithm, manage end-to-end architecture (game model + LLM layer), and ensure a strict 2-second move latency while coordinating with the client and product team.

Role demands deep ML/AI engineering experience at scale, with a strong track record shipping AI inside live products, and AWS/cloud experience. This is a 3-month, 0.5 FTE engagement, based in Warsaw, Poland.