Data Scientist Lead (Hanoi)

Job Descriptions

Responsible for the full lifecycle of analytical and machine learning model development, leading and supporting the team while contributing hands-on across all phases, from ideation and experimentation to implementation, testing, deployment, and optimization. 

• Lead and oversee the Data Science team across research, development, evaluation, fine-tuning, and deployment of ML and generative AI models, including statistical analysis, feature engineering, and hands-on contribution when needed
• Guide the design, implementation, and optimization of robust data pipelines and ML system architectures in collaboration with Data Engineering, ensuring scalability for both real-time and batch use cases
• Provide direction for creating analytical reports, dashboards, and model-driven visual insights to effectively communicate findings to business stakeholders
• Establish and enforce MLOps and technical quality standards - including model versioning, reproducibility, observability, governance, ensuring the team consistently follows these standards and providing guidance to help them apply the practices effectively
• Perform solution reviews, code reviews, and model validation to ensure consistent delivery quality
• Lead technical discussions with the team and clients, provide effort estimations, deliver technical training 
• Support the PM with source-control and technical governance strategies

Qualifications

5+ years of hands-on experience in Data Science, ML, or Applied AI 

Technical Skills 

• Proficiency in Python (e.g., Pandas, NumPy, FastAPI) 
• Strong experience with SQL and working with relational and NoSQL databases 
• Good knowledge of big data technologies (e.g., Spark, Databricks, Delta Lake, Kafka) 
• Experience with at least one Cloud provider (e.g., Azure, AWS, or GCP). 
• Experience using data visualization / BI tools such as Power BI, Tableau, or open-source BI tools. 
• Solid knowledge and hands-on experience with key machine learning algorithms such as classification, regression, clustering, time series forecasting, and anomaly detection using tools like Scikit-learn, PyTorch, and TensorFlow. 
• Strong foundation in machine learning concepts and deep learning (e.g., CNNs, RNNs, Transformers) 
• (Nice to have) Experience with ETLtools (Airflow, DBT, Azure Data Factory, or AWS Glue) 
• (Nice to have) Experience with MLOps tools (e.g., MLflow, SageMaker, Azure ML, Vertex AI) 

Math & Statistical Knowledge (Must-Have) 

• Strong foundation in probability, statistics, optimization, and linear algebra  
• Experience in designing experiments (e.g., A/B testing) and interpreting statistical significance 
• Ability to apply math-driven thinking to AI/ML model design 

Generative AI Skills (Nice to Have) 

• Awareness or working knowledge of LLMs (e.g., GPT-4, Claude, LLaMA, Mistral) 
• Exposure to GenAI frameworks such as LangChain, LlamaIndex, or Hugging Face Transformers 
• Understanding of prompt engineering, embeddings, and concepts like RAG 
• Familiarity with GenAI use cases such as summarization, document analysis, chatbots, or code generation 
• Ability to integrate GenAI APIs (OpenAI, Azure OpenAI, Hugging Face) into applications 

Domain Knowledge 

• Experience with one of the following domains such as media, banking, finance, healthcare, retail, manufacturing, or insurance 
• Ability to understand and interpret domain-specific business problems and translate them into data science solutions 

Soft Skills 

• Strong problem-solving and critical thinking abilities 
• Ability to clearly communicate technical findings to non-technical stakeholders 
• Collaborative, agile mindset with a self-starter attitude 
• Comfortable working in fast-paced, cross-functional teams 

English Requirements 

• Good communication skills in English, both written and verbal