Machine Learning Engineer

3 weeks ago

Salem, Tamil Nadu, India Mercle Full time

Role Overview

You will design, optimize, and deploy real-time computer vision and machine learning pipelines for a multi-sensor biometric authentication device. This includes processing high-resolution data from RGB, IR, and depth/thermal sensors, implementing robust anti-spoofing mechanisms, and integrating privacy-preserving encrypted face-matching algorithms (e.g., CKKS/FHE). The role demands expertise in embedded GPU platforms (NVIDIA Jetson series) and the ability to push models to production under strict latency and security constraints.

Responsibilities

Model Development & Optimization

  • Build and fine-tune face detection, alignment, and embedding extraction models for RGB + IR + depth + thermal data.
  • Research and implement spoof detection (e.g., texture analysis, depth cues, challenge-response).
  • Quantize and optimize models for Jetson hardware (TensorRT, ONNX Runtime, CUDA/CuDNN).

Encrypted Matching Pipeline

  • Implement vector encryption (CKKS/FHE) for face embeddings.
  • Develop threshold-based similarity checks in encrypted space (GPU-accelerated).
  • Collaborate on algorithm selection (cosine similarity vs. alternatives) ensuring high precision at 95%+ thresholds.

Multi-Sensor Data Fusion

  • Synchronize and process input from multiple camera modules.
  • Fuse thermal/IR/depth data to improve accuracy and spoof resistance.

Real-Time Performance Engineering

  • Achieve sub-second processing latency.
  • Optimize compute graph, memory usage, and sensor I/O.

Hardware Integration

  • Work closely with embedded engineers to integrate ML pipelines into the device's OS and BSP.

R&D

  • Stay updated on state-of-the-art in biometric security, encrypted ML, and edge AI.
  • Prototype and test new methods for privacy-preserving identity verification.

Required Skills

Core ML / CV Skills

  • Strong background in computer vision (OpenCV, PyTorch/TensorFlow).
  • Experience with face recognition systems (e.g., ArcFace, FaceNet) and anti-spoofing.
  • Model optimization for constrained devices (TensorRT, pruning, quantization).

Embedded AI

  • NVIDIA Jetson platform experience (Nano, Xavier, Orin).
  • CUDA, cuDNN, GPU profiling, and performance tuning.

Privacy-Preserving ML

  • Hands-on with Fully Homomorphic Encryption (CKKS) / SMPC or related frameworks (e.g., OpenFHE, SEAL, FIDESlib).
  • Understanding of secure enclaves and encrypted inference.

Systems & Integration

  • Comfortable working with BSP bring-up, camera sensor integration, and custom drivers.
  • Strong Python & C++ skills for production deployment.

Bonus

  • Depth/thermal imaging experience.
  • Knowledge of biometric standards & certification (ISO/IEC 19794-5).
  • Background in security for identity systems.

Ideal Candidate

  • Has deployed ML models on embedded GPU hardware.
  • Has worked on biometric authentication or high-security identity verification projects.
  • Can own the full stack of data processing — from raw sensor input to encrypted decision output.
  • Thrives in R&D-heavy, rapid-prototyping environments.

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