About Company : Sign3 Labs is an AI-native fraud and customer intelligence platform purpose-built for Indian Financial Services. We work with major banks, NBFCs, small finance banks, enterprises and FinTech across the country, helping them make risk decisions at onboarding, login and transaction. We are a venture-backed, revenue-generating company scaling commercially across India, with a growing team spanning engineering, data science, GTM and operations.

Role: Data Scientist Junior

Roles & Responsibilities:

Core modelling

⢠Binary classifiers under heavy class imbalance. Fraud base rates are low. You will build GBMs (XGBoost, LightGBM) and shallow neural models that have to perform at the low-FPR operating points clients actually care about â not at default thresholds.

⢠Feature engineering across signal families. Device, behavioral, location, image, telecom and alternate-data signals, plus velocity aggregations across multiple time windows. You will learn to turn raw telemetry into features that survive adversarial drift.

⢠Anomaly and unsupervised detection.



Isolation Forest, auto encoders, PCA residuals, peer-group outliers â for the cold-start cases where labeled fraud is weeks away.

⢠Graph features (growing scope).Contribute to our graph-based fraud and community-detection work. You will start with graph-derived tabular features and can grow deeper into graph modelling if the work suits you.

Productionization and monitoring

⢠Deployment. Package models for our real-time decisions path. Understand latency budgets and feature availability at scoring time (no leakage, no missing features in production).

⢠Monitoring. PSI, CSI, score-distribution drift, feature drift, fraud-capture curves by client. Own the weekly model-health review for at least one deployed model within six months.

⢠Threshold economics. Work with clients to translate fraud capture â customer-friction trade-offs into operating points they can sign off on. This is where most f

📌 Data Scientist Junior, Sign 3 (Gurugram)
🏢 Cedar group
📍 Gurugram