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I'm a Senior Data Engineer with 8+ years of strong technical expertise in building reliable and scalable data infrastructure, from data ingestion to transformation to warehousing, streaming, and data analytics, specializing in dbt, Snowflake, Airflow, Databricks (and more) across AWS, Azure, and GCP, with robust ELT and ETL pipelines. If your data pipelines are brittle, your data warehouse is slow, or your data was never built to scale, that is exactly what I fix, with fault tolerance, observability, and audit-ready quality engineered in from day one. I cover the full data engineering lifecycle: batch and real-time data pipelines, Modern Data Stack builds, lakehouse architecture, cloud and warehouse data migration, governance, and the data foundations that feed modern systems. 🎯 Core Expertise: ✅ Data Pipelines & Orchestration: End-to-end batch and real-time pipelines with Apache Airflow, Dagster, Prefect, AWS Step Functions, and Azure Data Factory. Idempotent, schema-drift tolerant, and monitored so failures surface before they reach your stakeholders. ✅ Cloud Warehousing & Lakehouse: Snowflake, BigQuery, Amazon Redshift, Databricks, and Microsoft Fabric, with Delta Lake and Apache Iceberg lakehouse foundations governed through the Glue Data Catalog and Lake Formation, with Athena and Redshift Spectrum for serverless queries, Medallion Architecture, partitioning, and performance tuning. ✅ Data Transformation & Modeling: dbt (Core and Cloud), SQLMesh, Spark and PySpark on EMR and AWS Glue, Star Schema and dimensional modeling, analytics engineering best practices, full test coverage, and CI/CD for data models. ✅ Streaming & Real-Time Analytics: Distributed streaming with Apache Kafka, Flink, Spark Structured Streaming, Kinesis, and Pub/Sub, including exactly-once semantics, dead-letter queues, CDC, and end-to-end latency guarantees. ✅ Data Ingestion & Integration: Fivetran, Airbyte, Matillion, Stitch, Hevo, Meltano, and custom CDC pipelines for near-real-time sync across structured, semi-structured, and unstructured sources. ✅ Data Quality, Governance & Observability: Automated data quality frameworks, SLA monitoring, auditable lineage, data catalog and metadata management, and observability that catches bad data early. ✅ Cloud Migration & Modernization: Zero-downtime migration handled end to end, from legacy warehouse assessment through cutover, with zero data loss and minimal downtime, replacing brittle ETL and ELT with a clean Modern Data Stack. ✅ AI-Ready Data Infrastructure: Pipelines engineered to feed LLMs and ML systems with clean, structured, high-quality data, from ingestion through transformation to serving. ------------------------------------------------------ ⚙️Tech Stack: ⚡ Warehouses & Lakehouse: Snowflake | BigQuery | Redshift | Databricks | Microsoft Fabric | Athena | Delta Lake | Iceberg ⚡ Transformation: dbt | SQLMesh | Spark | PySpark | AWS Glue | EMR | Star Schema | Medallion Architecture ⚡ Orchestration: Airflow (GCP Cloud Composer and AWS MWAA) | Dagster | Prefect | Azure Data Factory | Step Functions ⚡ Streaming: Kafka | Flink | Kinesis | Pub/Sub | Spark Structured Streaming | ClickHouse ⚡ Ingestion: Fivetran | Airbyte | Matillion | Stitch | Hevo | Meltano | CDC ⚡ Governance & Catalog: Glue Data Catalog | Lake Formation | Unity Catalog | Microsoft Purview | Dataplex ⚡ Cloud: AWS | GCP | Azure ⚡ Languages: Python | SQL (Snowflake, BigQuery, T-SQL, PL/pgSQL) | FastAPI ⚡ Databases: PostgreSQL | MySQL | SQL Server | DynamoDB | MongoDB ⚡ BI & Reporting: Looker | Tableau | Power BI | GA4 | Metabase | Superset | Streamlit | Grafana ------------------------------------------------------ ⭐ What Clients Say: 🏅 "Adarsh rebuilt our analytics pipeline on Snowflake, Airflow, and dbt, giving us reliable, version-ready data. Reporting accuracy improved overnight, and we can finally trust the numbers." – Anita, Head of Product, FinTech SaaS 🏅 "He designed a zero-downtime migration to a modern data warehouse that cut query latency by more than half while keeping our SLAs intact." – Daniel, VP of Data, AdTech Firm 🏅 "Clean architecture, solid dbt models, and Airflow pipelines running without issues for months. He brought a level of engineering discipline we hadn't seen from a data consultant before." – Mark, Director of Data Engineering, E-commerce Startup 🏅 "We came to him with a Spark pipeline costing us a fortune and delivering stale data. He restructured the workflow logic and cut processing time by 70%." – Leo, Head of Analytics, HealthTech SaaS ------------------------------------------------------ 🏆 TOP RATED PLUS | EXPERT-VETTED | Top 1% on Upwork | 8+ Years Experience | 100% Job Success 🚀 Ready to build a scalable, production-ready data infrastructure to turn your raw data into reliable, actionable business insights? Click the 'Invite to Job' button on the top right, and let's discuss your data pipeline!

I specialize in high-performance ETL pipelines that transform complex datasets into fast, reliable Power BI dashboards with clear, decision-ready insights. My core strength is database performance optimization—from efficient ETL scripting and advanced SQL query tuning to smart indexing strategies—consistently delivering faster queries, reduced load times, and scalable data models. I design dashboards with well-aligned KPIs that cut through noise and help stakeholders make confident, data-driven decisions at a glance. Backed by certifications in SQL, Advanced Query Tuning, Snowflake, Python for Data Science, and Oracle SQL Performance Tuning, I deliver high-quality, performance-driven solutions tailored to business needs—turning data into speed, clarity, and impact.

I bring 17 years of hands-on experience and expertise in managing, optimizing, and automating complex IT infrastructures. My professional journey has spanned diverse technologies, from database administration to DevOps, monitoring tools, and scripting, ensuring that I deliver reliable and efficient solutions tailored to client needs. Key Expertise Areas: 1. Database Administration: • MySQL, MariaDB, and Percona Server for MySQL • Galera Cluster for high availability • Advanced backup and recovery solutions with Xtrabackup • Query optimization, performance tuning, and Orchestrator for MySQL replication management 2. Load Balancing and Proxy Management: • Expertise in ProxySQL and HAProxy for scalable and high-performing systems 3. Containerization & Orchestration: • Proficient in Docker and Kubernetes for deploying and managing applications in scalable, containerized environments 4. System Administration: • Linux and Windows system administration • Automation using tools like CHEF and Ansible for configuration management 5. Monitoring & Alerting Tools: • Skilled in setting up and maintaining Zabbix, Grafana, Icinga, Nagios, Prometheus, and Loki for real-time system monitoring 6. Scripting & Automation: • Bash and Python scripting for task automation, monitoring enhancements, and custom solutions Why Work with Me? • Proven Track Record: Over 17 years of successfully solving complex challenges and delivering impactful results • Versatility: In-depth knowledge across diverse technologies and platforms • Client-Focused: Tailored solutions to meet unique business requirements, with a strong emphasis on reliability and performance If you’re looking for a dependable expert to optimize your databases, manage your systems, or implement scalable DevOps solutions, I’m here to help. Let’s discuss how I can bring value to your project!

1) Top Rated Plus Professional. 2) Total 163 Jobs done at Upwork 100% success. 3) 11.5k+ Hours and Earned $230k+ → I am doing Website Development (Programming) in PHP-MYSQL Linux Apache & It's CMS and Frameworks like WordPress, Joomla, Contao, Magento Oscommerce (Ecommerce). → Artificial Intelligence (AI) Uses for acceleration the process using Cursor, Codex, Claude Code, Replit, GitHub Copilot, OpenAI, DeepSeek → Laravel (Blade Template), Zend (Laminas) Framework, CodeIgniter Framework → JavaScript Frameworks: jQuery, Prototype.js, ExtJs . → Version Control: GitHub → Project , Task & Team management: Trello, Basecamp, Slack, Monday etc.. → I am also Handling database operations, Custom APIs, Third Party, complex applications SOAP, JSON, XML, RESTful API, QR Code generation, Cloud Computing Services - Amazon Web Services (AWS), Payment gateways (PayPal, Braintree, Stripe), etc.

I have 17+ years of IT experience in the area Application Development, Systems Integration, Production Support, Application Maintenance and QA projects. I have played the role of Project Manager, Project Lead, Business Analyst, Developer and QA. I have managed complete SDLC for medium sized development projects. I have business domain knowledge in the area of Automotive on-board telematics and IT systems, Pharma Relationship Marketing, Manufacturing Execution Systems and Work and Asset Management. I have actively implemented LEAN practices in Production support projects. My technical skills in Database consultancy/administration/development are as follows 1. Design and development of relational and NoSQL databases (Mysql, Oracle, MongoDB). Production support of Mysql and MongoDB databases. 2. Migrating existing databases to Mysql, Oracle and MongoDB. 3. Configuring monitoring and alerts for database servers. 4. Develop business layer applications in PL/SQL / Mysql procedures and UNIX. 5. Setup and support Mysql HA database cluster in single primary or multi primary mode without changes to your data or tables. 6. Setup and support Mysql master-slave replication for backups and failover. 7. Automated Point-in-time recovery of Mysql databases. 8. Performance tune databases like Mysql and Oracle. My programming language skills include 1. PHP 2. C 3. PL/SQL 4. Mysql stored procedures 5. UNIX Shell scripting My technical skills in REST API/Web Services consultancy/development are as follows 1. Creating high performance, scabale, standards compliant and secure RESTful API for backend and business logic processing as microservices or in monolithic service architecture. My technical skills in System/Devops consultancy/administration are as follows 1. Create solution architecture for Cloud and On-Premise infrastructure based on free and open source software stack. 2. Containerize Mysql and other servers using Docker and/or LXC. 3. Deploying LXC containers to create extremely lightweight and tightly packed virtualized environments to isolate, secure and streamline your IT operations. Running LXC containers have near zero performance penalty. 4. Install and configure QEMU-KVM virtual machines with full inter VM and external networking support, 3D graphics acceleration for GUI based administration. 5. Performance tune and secure your LAMP/LEMP and other application stack. 6. Deploying directory servers like OpenLDAP, designing DIT, configuring LDAP access control, indexing, replication and single sign-on. 7. Setup in-memory databases like Memcached or a persistent in-memory database Mysql Memcached plugin for caching or sessions. 8. Setup and maintain secure Email servers using Postfix, Dovecot, Courier IMAP, maildrop, Spamassasin, ClamAV, milters, DKIM, SPF, DMARC and Roundcube webmail. 9. Maintenance and administration of Linux servers like setting up firewall, webservers, mail servers, ldap servers, imap servers, automating system admin tasks using shell scripts, applying security updates, install and uninstall of software packages. 10. Setup of Jenkins for CI/CD of complex project workflows. 11. VPN setup ( IKE/IPSec and OpenVPN )

🏆 TOP RATED UPWORK PROFESSIONAL | 16+ YEARS IN DATA & ANALYTICS Need help with Snowflake migration, data engineering, data architecture, SQL optimization, or Databricks? I help businesses build, modernize, migrate, and optimize scalable data platforms using Snowflake, Databricks, SQL, Python, and cloud technologies. I bring 16+ years of experience across data architecture, data engineering, database modernization, data warehousing, business intelligence, and cloud data platforms. 🚀 WHAT I CAN HELP YOU WITH • Snowflake architecture, development, migration, and optimization • SQL Server to Snowflake database migration • Data engineering and ETL/ELT pipeline development • Databricks and Apache Spark solutions • Data warehouse and lakehouse architecture • Data modeling and database design • SQL development and performance optimization • Data integration and data quality • Database modernization and cloud migration • Python-based data engineering and automation • Azure data solutions • Power BI and analytics data platforms 📊 PROVEN EXPERIENCE • Migrated 29+ databases from SQL-based platforms to Snowflake, covering migration planning, architecture, data validation, performance optimization, and production deployment. • Worked with data environments exceeding 15 TB and designed scalable data platforms, pipelines, warehouses, and integration solutions. • Led teams of 18+ engineers across data engineering, database modernization, migration, and analytics initiatives. • Supported 25+ critical projects running in production for enterprise clients. 🗄️ DEEP SQL & DATABASE EXPERIENCE I also bring 12+ years of hands-on SQL Server experience across database development, administration, performance tuning, migration, high availability, backup and recovery, replication, clustering, SSIS, SSRS, T-SQL, and database troubleshooting. This combination of deep database experience and modern cloud data expertise allows me to understand both your existing environment and the target architecture before recommending a solution. ☁️ TECHNOLOGIES Snowflake | Databricks | Apache Spark | SQL | SQL Server | PostgreSQL | Python | Azure | Power BI | ETL/ELT | Data Warehousing | Data Modeling | Hadoop | Hive | MongoDB 🤖 AI & MODERN DATA I also have experience with Python, R, machine learning, NLP, pandas, NumPy, Matplotlib, scikit-learn, Hadoop, Hive, Spark, MongoDB, and modern AI/data concepts. 🎯 WHY WORK WITH ME? I focus on solving the actual business problem—not simply writing code. My approach is straightforward: 1. Understand your current environment and requirements 2. Design the right technical approach 3. Build or migrate the solution 4. Validate data quality and performance 5. Deliver a reliable, scalable, production-ready platform I value clear communication, ownership, quality delivery, and long-term client relationships. If you need a Snowflake Data Architect, Data Engineer, Databricks specialist, SQL expert, or database migration professional, let's discuss your project.