Job Description:
AI Lead Engineer
Role Overview
We are seeking a Lead Generative AI Engineer with strong foundations in deep learning, transformer architecture, and practical experience building GenAI applications beyond basic RAG systems. The ideal candidate has hands-on experience/technical familiarity with LLM fine-tuning, multimodal models, retrieval systems, agentic frameworks, retrieval architectures, and production-grade ML deployment.
This role will partner with engineering, data science, and CX teams to build intelligent agents, multimodal experiences, personalization systems, and knowledge-grounded AI solutions that power the future of customer engagement for global brands.
Key ResponsibilitiesGenerative AI, Multimodal Systems & Agentic Frameworks- Build conversational and non-conversational, multimodal, and agentic AI applications using LLMs and frameworks such as LangChain, LangGraph, LlamaIndex, AutoGen, or similar.
- Design AI workflows incorporating reasoning, planning, tool-use, memory, grounding, and external system integrations.
- Develop Knowledge Graph (KG)-assisted AI systems, including entity extraction, linking, and KG-augmented retrieval.
- Ensure safety, consistency, and hallucination-control through structured evaluation and guardrails.
- Transform models into scalable APIs and microservices using Python, FastAPI/Flask, Docker.
- Deploy and monitor ML/AI systems in AWS/Azure/GCP, optimizing for cost, latency, and reliability.
- Collaborate with MLOps teams on CI/CD pipelines, model versioning, monitoring, and automated evaluation.
- Work with big data technologies including Apache Spark, Hadoop, and NoSQL databases such as MongoDB.
- Build and optimize transformer-based and multimodal models using deep learning frameworks (e.g., PyTorch, TensorFlow).
- Implement fine-tuning, alignment (RLHF/RLAIF), LoRA/QLoRA, pruning, and model evaluation pipelines.
- Develop information retrieval systems, including hybrid dense–sparse retrieval, ranking, knowledge graphs, and relevance optimization.
- Build predictive models and ML pipelines from scratch, including data preparation, feature engineering, and model selection.
- Work cross-functionally with CX, engineering, and product stakeholders to translate business needs into AI solutions.
- Document models, experiments, evaluation frameworks, and deployment processes.
- Mentor junior engineers and contribute to internal best practices, reusable components, and R&D initiatives.
- Programming: Python (advanced), SQL; robust experience with API development and data engineering,
- Backend Frameworks: Flask, FASTAPI, Django
- Machine Learning: Predictive modelling, deep learning, optimization, embeddings, vector search, model evaluation.
- Generative AI: LLMs, RAG, multimodal architectures, agents, prompt engineering, grounding, knowledge graphs.
- Cloud Platforms: AWS, Azure, or GCP with hands-on experience deploying and scaling AI systems.
- Data Technologies: Apache Spark, Hadoop, MongoDB; strong understanding of data pipelines and large-scale processing.
- Math Foundations: Linear algebra, probability, statistics.
- Minimum 5-6 years of hands-on software development experience including building and deploying machine learning models into production.
- 2+ years of experience working with deep learning, GenAI, or transformer-based architectures.
- Demonstrated experience building GenAI applications beyond simple RAG (e.g., agents, multimodal, custom LLM fine-tuning).
- Experience integrating AI systems in enterprise-grade environments.
Skill Category
Lead AI Engineer
Transformers & Deep Learning
Applies LoRA/QLoRA, distillation, debugging, optimization.
Generative AI (LLMs & Multimodal)
Builds tool-using pipelines, multilingual/multimodal flows.
Information Retrieval & Relevance
Implements hybrid retrieval + ranking, KG-enhanced semantic retrieval
Predictive Modeling
Builds and tunes end-to-end ML pipelines.
Knowledge Graphs
Builds KG pipelines (entity linking, embeddings).
Conversational AI
Multi-turn, multilingual dialogue systems with evaluation metrics.
Agentic Frameworks
Multi-step agent workflows with planning & memory.
Model Deployment
Scales services with CI/CD, monitoring, GPU/accelerator ops.
Cloud & MLOps
End-to-end model lifecycle automation.
Big Data & Pipelines
Uses Spark/Hadoop/MongoDB effectively.
Deep Learning
Understand and applied deep learning architectures – RNNs, LSTMs, Transformers
Attitude & Mindset- Growth-oriented, collaborative, and experimentation-driven.
- Strong problem-solving skills with a bias toward action.
- Ability to communicate complex concepts clearly to non-technical stakeholders.
- Open and flexible towards a hybrid work structure with no less than 2-days work from office – This is to ensure that the team working in the AI domain regularly connects and does knowledge exchange across projects
Location:
DGS India - Pune - Kharadi EON Free ZoneBrand:
MerkleTime Type:
Full timeContract Type:
PermanentSkills Required
- Minimum 5-6 years software development experience including building and deploying ML models to production
- 2+ years working with deep learning, generative AI, or transformer-based architectures
- Advanced Python programming and SQL
- Experience with backend frameworks and API development (Flask, FastAPI, Django)
- Hands-on model development with PyTorch or TensorFlow and fine-tuning techniques (LoRA/QLoRA, pruning, distillation)
- Experience with LLMs, RAG, multimodal architectures, agent frameworks, prompt engineering, and hallucination control
- Experience with LangChain, LangGraph, LlamaIndex, AutoGen, or similar agent/retrieval frameworks
- Deploying and monitoring ML systems in cloud environments (AWS, Azure, or GCP)
- Containerization and service packaging (Docker) and production-grade API/microservice experience
- Experience building information retrieval systems including hybrid dense-sparse retrieval, ranking, and relevance optimization
- Experience with big data technologies and pipelines (Apache Spark, Hadoop) and NoSQL databases (MongoDB)
- Strong math foundations: linear algebra, probability, and statistics
- Experience integrating AI systems in enterprise-grade environments and collaborating with cross-functional teams
dentsu Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about dentsu and has not been reviewed or approved by dentsu.
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Parental & Family Support — Paid parental leave at full pay and caregiver supports (including backup care) are emphasized as standout elements. Feedback suggests family-oriented benefits are a strong part of the package.
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Leave & Time Off Breadth — Flexible or unlimited PTO, extensive paid holidays, and a year-end office closure are established components. Feedback suggests time-off policies are generous and add meaningful flexibility.
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Retirement Support — A large, established 401(k) plan with employer matching is clearly documented. Feedback suggests retirement benefits feel competitive and straightforward.
dentsu Insights
What We Do
We are dentsu. We team together to help brands predict and plan for disruptive future opportunities and create new paths to growth in the sustainable economy. We know people better than anyone else and we use those insights to connect brand, content, commerce and experience, underpinned by modern creativity. We are the network designed for what’s next






