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Senior Data Scientist - Anticheating

A5 Labs

Programming · Senior · On site · Full time · Tokyo, Tokyo, Japan

About the Role We are building a next-generation AI-driven anti-cheating system for competitive strategy games. Unlike traditional fraud detection, our challenge sits at the intersection of: • 🎮 Game AI & player behavior modeling • 🧠 Reinforcement learning & decision systems • 🔍 Anomaly detection under adversarial conditions You will work on identifying non-obvious, strategic cheating behaviors in complex environments where players actively adapt to detection systems. This is not rule-based detection — this is behavioral intelligence at scale. What You’ll Do 1️⃣ Behavioral Modeling & Detection • Design machine learning / deep learning models to detect cheating patterns • Model player behavior sequences, strategies, and anomalies • Build systems that distinguish: • high-skill play vs. AI-assisted play • natural variance vs. exploitation 2️⃣ Anti-Cheating System Design • Develop scalable detection pipelines (offline + real-time) • Build feature systems from gameplay logs / event streams • Design evaluation frameworks for detection accuracy & robustness 3️⃣ ML / DL / Advanced Techniques • Apply and experiment with: • sequence modeling (RNN / Transformer-based) • anomaly detection • graph-based or behavioral embeddings • Explore intersections with: • reinforcement learning • game-theoretic modeling • adversarial ML 4️⃣ Collaboration with AI & Engineering Teams • Work closely with: • Gameplay AI / RL researchers • Backend / data engineering teams • Translate models into production systems What We’re Looking For ✅ Core Requirements • 4+ years in Data Science / Machine Learning roles • Strong foundation in: • deep learning • statistical modeling • Experience in one or more of: • fraud detection / AML • risk modeling • anomaly detection • behavioral analytics ✅ Strong Signals (Big Plus) • Experience with: • sequence models (LSTM / Transformer) • large-scale behavioral data • real-time detection systems • Exposure to: • reinforcement learning • game AI • adversarial systems ✅ Technical Stack • Python (must) • PyTorch / TensorFlow • SQL / data pipelines • Experience working with large-scale datasets Why This Role is Interesting • 🚀 Work on problems similar to fraud detection at scale — but harder • 🎯 Direct impact on real-money / competitive environments • 🧠 Blend of: • ML research • production systems • game AI • 🌍 Fully remote, globally distributed team Location & Visa • 🌏 Remote-first (global team) • 🇯🇵 Japan relocation supported (visa sponsorship available for qualified candidates) Who This Role is Perfect For • Data scientists bored with “dashboard ML” • Fraud / AML experts who want more complex, adversarial systems • ML engineers who want to work closer to decision intelligence & behavior modeling

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