Data Scientist

About CoffeeBeans Consulting

CoffeeBeans is a fast-growing software consulting firm known for solving complex business problems using cutting-edge engineering, AI, and data science. Our teams deliver end-to-end solutions across ML and GenAI, with a strong focus on building production-grade systems that drive measurable value for clients in fintech, retail, healthcare, logistics, and beyond.

Experience: 3 - 7 Years

Location: Bangalore

Workmode: WFO

Note: Should be willing to travel within India and International location.

Role Overview

As a L3 Data Scientist, you will lead the design, development, and deployment of advanced machine learning and GenAI applications. You will be responsible for end-to-end ownership of model development, fine-tuning LLMs, and building intelligent systems that integrate seamlessly into client products. This role combines deep technical expertise, product thinking, and the ability to mentor and influence others.

This is a senior individual contributor role, ideal for professionals who thrive on solving ambiguous, high-impact problems using a blend of classical ML and cutting-edge LLM technologies.

Key Responsibilities

ML & Data Science Leadership

• Lead the development of robust machine learning solutions across supervised, unsupervised, and time-series problems.
• Architect and own pipelines for feature engineering, training, evaluation, and monitoring of models.
• Apply advanced experimentation techniques, error analysis, and iterative improvements to meet business KPIs.

LLM & GenAI System Development

• Design and implement GenAI-powered solutions such as copilots, document processors, summarization agents, and intelligent assistants.
• Build advanced workflows using prompt engineering, RAG pipelines, context management, and hybrid model chaining.
• Lead LLM fine-tuning efforts using instruction tuning, parameter-efficient methods (LoRA, QLoRA, PEFT), or full-model fine-tuning for domain-specific use cases.
• Evaluate trade-offs across LLM providers (open-source vs API-based) and optimize for performance, cost, and latency.

Collaboration & Impact

• Partner with engineering, product, and business teams to shape technical direction and translate insights into deployed solutions.
• Contribute to pre-sales activities, PoC development, and client workshops as a technical SME.
• Drive technical quality, review deliverables, and ensure adherence to best practices across the data science lifecycle.

Mentorship & Technical Leadership

• Mentor junior and mid-level data scientists on modeling approaches, GenAI architecture, and clean experimentation workflows.
• Lead internal sessions on advancements in ML/LLM ecosystems and guide capability development within the team.

Required Skills & Qualifications

• 3 -7 years of hands-on experience in data science, machine learning, or AI product development.
• Strong Python programming skills with expertise in libraries like pandas, NumPy, scikit-learn, XGBoost/LightGBM.
• Proven track record of shipping ML models to production (batch or real-time) in business-critical applications.
• Hands-on experience working with LLMs (OpenAI, Mistral, Claude, LLaMA) and frameworks like LangChain or LlamaIndex.
• Direct experience in fine-tuning LLMs using Hugging Face Transformers, PEFT, or custom pipelines.
• Strong understanding of prompt engineering, embeddings, similarity search, and vector databases (e.g., FAISS, Pinecone).
• Experience with Docker, Git, and cloud platforms (AWS, GCP, or Azure).

Good-to-Have

• Exposure to ML/GenAI platform design and MLOps tools (e.g., MLflow, SageMaker, Weights & Biases).
• Experience with evaluation and safety frameworks for GenAI applications.
• Contributions to open-source projects or demonstrable personal projects in ML/LLMs.