AI Engineer (PhD Required)
Pixalate, Inc.4 months ago
Karachi, Pakistan or Lahore, PakistanSenior
Responsibilities
- Design and implement multi-agent architectures for autonomous fraud detection and analysis.
- Develop agent coordination, tool-integrated reasoning, safety, and alignment systems using frameworks such as LangChain and AutoGen.
- Implement advanced reasoning systems, test-time compute optimization, chain-of-thought mechanisms, and verification methods.
- Build multimodal models for video, image, text, and behavioral data analysis.
- Develop RAG architectures, vector databases, hybrid search, advanced chunking, and context-aware retrieval systems.
- Research cross-modal learning, novel algorithms, reinforcement learning, neural architecture search, and scalable reasoning approaches.
- Conduct large-scale experimentation, ablation studies, and distributed training with GPU optimization.
- Translate AI research innovations into production ML systems for fraud detection and online trust and safety.
Requirements
- PhD in Computer Science, AI, Machine Learning, or a related field, or an exceptional research track record.
- Peer-reviewed publications demonstrating expertise in large language models, transformer architectures, agentic or multi-agent systems, multimodal learning or computer vision, and distributed systems or scalable ML.
- Expert proficiency in Python and deep learning frameworks, with PyTorch preferred and TensorFlow experience expected.
- Advanced experience with LangChain, Hugging Face Transformers, Ray, agent development and orchestration, RAG systems, vector databases, distributed training frameworks, and GPU optimization.
- Strong understanding of transformer architectures, attention mechanisms, reinforcement learning, reward modeling, neural architecture search, AutoML, MLOps, and production ML systems.
- Track record of novel algorithm development, innovation, large-scale experimentation, and ablation studies.
- Proficiency with Weights & Biases, MLflow, and TensorBoard.
- Strong theoretical foundation in optimization, statistics, and linear algebra.
- Preferred qualifications include fraud detection, cybersecurity, trust and safety, open-source AI, industry research lab, production research translation, mixture-of-experts, Constitutional AI, alignment, efficient inference, and real-time streaming ML experience.
Benefits
- Full-time remote role based in Pakistan.
- Opportunity to pursue autonomous AI research and deploy innovations at scale for online trust and safety.
- Equal opportunity employer committed to building a diverse team and encouraging applications from underrepresented groups in AI research.
Categories
AI ResearchML Engineering
About Pixalate, Inc.
Pixalate builds fraud detection, privacy, and compliance analytics for digital advertising, used by advertisers, publishers, and ad platforms across CTV, mobile, and web. Its products include MRC-accredited sophisticated invalid traffic (SIVT) measurement and tools that support COPPA/child-privacy compliance. Founded in 2012 and privately held, Pixalate is headquartered in Washington, DC, and has been recognized by UNICEF as a key innovator in protecting children’s online privacy.