# Jijo James - Freelance Data Engineer, LLM Developer & AI Specialist

> Looking for a freelance data engineer? Hire Jijo James for data pipelines, LLM integration, AI agents, and machine learning projects.

## Summary
Jijo James is a Senior Data Engineer and AI Specialist with 9+ years of experience, available for freelance and contract work. Based in Bangalore, India, working remotely with clients worldwide. Specializes in building scalable data infrastructure, LLM-powered applications, AI agents, and production ML systems.

## Freelance Services

### Data Engineering
- **ETL/ELT Pipeline Development**: Design and build scalable data pipelines using Apache Spark, Airflow, dbt
- **Data Warehouse Architecture**: Snowflake, BigQuery, Redshift implementation and optimization
- **Real-time Data Streaming**: Kafka, event-driven architectures
- **Data Migration**: Legacy system modernization, cloud migration
- **Data Platform Development**: End-to-end data infrastructure setup
- **Cost Optimization**: Reduce cloud data infrastructure costs

### LLM & Generative AI
- **LLM Application Development**: Build production-ready LLM-powered applications
- **RAG System Development**: Retrieval-Augmented Generation pipelines with vector databases
- **Custom Chatbots**: AI assistants for customer support, internal tools
- **LLM Fine-tuning**: Domain-specific model training and optimization
- **Prompt Engineering**: Optimize prompts for better LLM outputs
- **LLM Integration**: OpenAI, Anthropic Claude, open-source models (Llama, Mistral)

### AI Agents & Automation
- **AI Agent Development**: Autonomous agents for complex workflows
- **Multi-Agent Systems**: Orchestrated AI agent architectures
- **Workflow Automation**: AI-powered business process automation
- **Tool-Using Agents**: Agents that interact with APIs, databases, external systems

### Machine Learning
- **ML Model Development**: Supervised, unsupervised, deep learning models
- **MLOps**: Model deployment, monitoring, CI/CD for ML
- **Recommendation Systems**: Personalization engines
- **NLP Solutions**: Text classification, entity extraction, sentiment analysis

## Technical Expertise

### Programming Languages
Python (Expert), SQL (Expert), Scala (Proficient), Bash

### Data Engineering Stack
- Apache Spark, PySpark
- Apache Airflow, Prefect, Dagster
- dbt (data build tool)
- Apache Kafka, Flink
- Delta Lake, Apache Iceberg

### Cloud Platforms
- AWS: S3, Glue, Lambda, EMR, Redshift, SageMaker
- Google Cloud: BigQuery, Dataflow, Cloud Functions, Vertex AI
- Databricks: Unity Catalog, Delta Live Tables, MLflow
- Azure: Data Factory, Synapse, Azure ML

### Databases & Data Warehouses
- PostgreSQL, MySQL
- MongoDB, DynamoDB
- Snowflake, BigQuery, Redshift
- Pinecone, Weaviate, Chroma (Vector DBs)

### LLM & AI Tools
- LangChain, LlamaIndex
- OpenAI API, Anthropic Claude API
- Hugging Face Transformers
- RAG architectures
- Vector databases (Pinecone, Weaviate, Chroma, pgvector)
- Prompt engineering frameworks

### DevOps & Infrastructure
- Docker, Kubernetes
- Terraform, CloudFormation
- GitHub Actions, Jenkins
- Linux, shell scripting

## Work Experience

### Senior Data Engineer - Eli Lilly and Company (2025 - Present)
Leading data migration for acquired companies. Building LLM-powered data pipelines and RAG systems. Driving data infrastructure modernization.

### Data Engineer - AI Palette (2024)
Built and optimized ETL pipelines using Airflow and Spark. Reduced execution time by 90%. Cut infrastructure costs via Kubernetes migration. Implemented in-house LLM-powered translator.

### Co-Founder - Dataque (2021 - 2024)
Built full-stack data platform processing 7M+ data points. 25% accuracy improvement. FastAPI, PostgreSQL, Python. Led product development for startup clients.

### Data Analyst - Leadlytics (2019 - 2021)
Led automation extracting 2M+ user records. Built data pipelines for US clients. Managed team of 3.

### Independent Consultant - Freelance (2016 - 2019)
Digital presence and lead generation for local businesses and startups.

## Project Types I Take On
- Building data pipelines from scratch
- Migrating legacy systems to modern data stacks
- Implementing LLM/AI features in existing products
- Creating AI chatbots and virtual assistants
- Developing RAG-based knowledge systems
- Building AI agents for automation
- Data warehouse design and optimization
- ML model development and deployment
- Technical consulting and architecture reviews

## Industries Served
- Healthcare & Pharmaceuticals
- Consumer Goods (CPG/FMCG)
- Technology / SaaS
- E-commerce & Retail
- Fintech
- Startups (Seed to Series B)

## Engagement Models
- **Hourly**: For consulting, code reviews, architecture discussions
- **Project-Based**: Fixed scope and timeline deliverables
- **Retainer**: Ongoing support and development
- **Part-time Contract**: Dedicated hours per week/month

## Why Hire Jijo?
- 9+ years hands-on experience in data and AI
- Built systems processing millions of data points
- Experience at enterprise (Eli Lilly) and startup scale
- Strong communication, async-friendly
- End-to-end ownership from design to deployment
- Cost-conscious, efficient solutions

## Availability
Currently accepting new freelance projects. Available for:
- Remote work worldwide
- Short-term projects (1-4 weeks)
- Long-term contracts (3-12 months)
- Part-time engagements (10-30 hours/week)

## Timezone
India Standard Time (IST / UTC+5:30)
Flexible with overlap hours for US, EU, APAC clients.
Available to work on  Eastern (EST), Central (CST), Mountain (MST), Pacific (PST), Alaska (AKST), and Hawaii-Aleutian (HST), Western European Time (WET/GMT, UTC+0), Central European Time (CET, UTC+1), and Eastern European Time (EET, UTC+2), Greenwich Mean Time (GMT).

## Contact
- Website: https://jijojames.dev
- Email: jj.jamesjijo@gmail.com
- LinkedIn: https://linkedin.com/in/jamesjijo
- GitHub: https://github.com/jijo-james
- Resume: https://resume.jijojames.dev

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