Hire the Best SOX Freelancers in Chennai, IN

I help companies turn fragmented data into trusted analytics used by leadership and operations. I specialize in building modern data platforms, from ingestion to analytics, using dbt, SQL, cloud data warehouses, and BI tools. My work focuses on clarity, correctness, and business impact, not just pipelines. What I typically help with: Designing scalable analytics engineering layers (dbt, dimensional modeling) Building and optimizing ELT pipelines into Snowflake / BigQuery / Redshift Creating trusted metrics and dashboards for leadership and operations Improving data quality, testing, and CI/CD for analytics Migrating legacy reporting to modern data stacks I work closely with stakeholders to translate business questions into clean data models and actionable insights. If you need analytics that people actually trust and use, let’s talk.

Data Integration & Big Data Specialist | Talend, Spark, Airflow, AWS Expert I am a seasoned Data Integration and Big Data Specialist with over 9 years of experience at Sopra Steria, delivering cutting-edge solutions using Hadoop, Talend, Spark, Airflow, and cloud technologies. My expertise lies in designing, implementing, and optimizing robust data pipelines and systems to handle complex business requirements. Key Strengths & Skills Data Engineering Expertise: Proficient in processing large datasets, both structured and semi-structured, with advanced Spark performance tuning to maximize efficiency. Cloud Specialist: Extensive experience in AWS services, including Redshift, S3, EMR, EC2, and Lambda, ensuring scalable and secure data processing. ETL Mastery: Designed and developed highly efficient Talend jobs for ETL processes, with a focus on performance optimization and scheduling in EC2. Orchestration & Automation: Expert in Apache Airflow for orchestration, designing complex DAGs, and automating data validations using shell scripting. CI/CD Implementation: Skilled in implementing CI/CD pipelines using Jenkins, streamlining deployment processes for enhanced efficiency. Cross-System Data Sync: Expertise in synchronizing data between AWS Redshift and Netezza. Notable Achievements Spark Optimization: Successfully tuned Spark jobs for large-scale data processing on Amazon EMR clusters, achieving significant performance improvements. Automation Initiatives: Designed and automated complex data validation frameworks, reducing manual intervention and increasing accuracy. Client Collaboration: Participated in sprint planning meetings, design discussions, and user story clarifications, ensuring smooth development and testing phases. Production Deployment: Led the deployment of Talend and Spark jobs in production clusters with meticulous configuration and monitoring. Education & Certifications B.Tech - Information Technology With a passion for solving data challenges and a proven track record of delivering impactful solutions, I am ready to contribute to your project with efficiency and precision. Let’s collaborate to turn your vision into reality!

I am a Senior Database Administrator & Database Architect with 10+ years of hands-on experience in RDBMS and Graph Databases, specializing in large-scale database migration, cloud modernization, and performance optimization for mission-critical systems. I have successfully delivered end-to-end database migrations and modernization programs across FinTech, Logistics, Healthcare, and Enterprise platforms, supporting clients in Singapore, UK, UAE, and South America. My work focuses on building highly available, scalable, and performance-optimized database environments on AWS and Azure. What I Do Best • End-to-end database migration and modernization with zero or minimal downtime • Performance tuning and query optimization for large, high-volume databases • Cloud-native database architecture and HA/DR implementation • Graph database modeling and optimization using AWS Neptune • Automation-driven DBA operations to reduce risk and manual effort Key Services I Offer Database Migration & Modernization • SQL Server → PostgreSQL / MySQL / Aurora • Oracle → PostgreSQL • SQL Server → AWS Neptune (Graph Database) • IBM DB2 → Aurora PostgreSQL • On-premises → AWS / Azure cloud migrations • Checksum-validated, low-downtime migration strategies Database Performance Optimization • Query rewrite and execution plan optimization • Index strategy design and tuning • Bottleneck identification for large datasets • Achieved 5x–20x performance improvements on critical workloads Cloud Database Engineering (AWS & Azure) • Amazon RDS, Aurora, EC2-hosted databases • AWS DMS migration pipelines • High Availability, Multi-AZ, failover & DR design • Monitoring and optimization using CloudWatch and Performance Insights Graph Database Engineering • AWS Neptune setup, tuning, and scaling • Gremlin and Cypher query optimization • Graph data modeling for complex relationships • SQL-to-Graph data transformation and integration Scripting & Automation • Python automation for ETL, migration, validation, and reporting • PowerShell and Bash scripting for DBA operations • Environment refresh automation for Dev / QA / UAT / Prod Reporting & ETL • SSIS, SSRS, Azure Data Tools (ADT) • Data warehouse design and transformation pipelines Technical Expertise • Databases: SQL Server, MySQL, PostgreSQL, Oracle, MongoDB, AWS Neptune, IBM DB2 • Query Languages: T-SQL, PgSQL, PL/SQL, Gremlin, Cypher • Cloud: AWS (RDS, Aurora, EC2, DMS, Redshift, VPC, KMS), Azure (IaaS / PaaS) • Scripting: Python, PowerShell, Bash • Tools: SSIS, SSRS, CloudWatch, SQL Profiler, Query Store, Performance Monitor Why Clients Choose Me • Proven experience with complex, high-risk migrations • Strong focus on data integrity, performance, and reliability • Clear communication and ownership from planning to delivery • Solutions built for long-term stability and scalability If you need a reliable DBA, migration specialist, or performance expert who can take full ownership and deliver results with precision, I’m ready to help.

Experienced Data Professional with 11 years of experience building scalable, secure data platforms in healthcare and insurance, combined with an MSc in Data Science (Distinction). I specialise in delivering ML-ready data architectures that drive real business outcomes. 🔹 Reduced data processing costs by 40% through AWS optimisation 🔹 Automated 80% of reporting, cutting delivery from 48h to 6h 🔹 Led zero-downtime migrations for 250+ healthcare providers 🔹 Designed event-driven systems processing millions of claims daily Tech: AWS (Glue, Redshift, Athena, Lambda), Python, SQL, Spark, Databricks, dbt, Airflow Strengths: Data warehousing, Data platforms, feature engineering, regulatory-compliant systems

Extensive experience (16 years) in Oracle, MySQL, SQL Server, Postgres, Snowflake and Azure Data Lake methodically identifying and resolving complex underlying causes of problems, using a vast variety of techniques and tools. I have solved numerous show-stopping Performance problems, as well as often re-engineered immensely complex designs and code, providing significantly improved performance. Have designed data warehouse and implemented ETL pipeline strategies on AWS and Azure. Extensive experience as a Data Engineer with multiple work experience in data extraction, data transformation, data load, data protection, data cleansing, data migration, data mergers etc. Expert level ability with Data Architecture, Data Modelling and Data Analysis. I can conceptualize, design and develop long-term, automated, integrated solutions with a focus on increasing your competitive advantage. Have also held roles where I had to work with business end users to provide Solution Architecture and drive the solution from discussing with the users to delivering the final solution product to the end users. Have around 6 years of experience in Python (ETL and Data Analytics), 4 years in Tableau, 2.5 years in DBT and 2 years in Matillion (ETL). Domain expertise: Freights and Logistics (Quotation, Pricing, Booking, Reservation, Inventory management, Operations, Control products for Accenture Freights and Logistics Solutions) - 7 years Finance - Capital Market (Backend book-keeping for different instruments for BNP Paribas) - 3. years Digital Marketing (Generic product for Call Center and Website for a Digital Marketing company called Candid Maven) - 2 years Merchant Data Platform (Creating the automated framework from scratch to bring in data that was managed in Smartsheet to the centralized database using Python and PL/SQL to serve the analytic needs - for a company called Woflow that holds 96% of the market in this domain) - 6 months Pharmaceutical (Data Lake and Data Warehouse setup for Precision for Medicine - integrated systems like CRM (Saalesforce), ERP (Infor CloudSuite, PSA), HR (Greenhouse, ADP, PSA, SAP Success Factor), RM (Smartsheet, WorkFront), Clinical vendor data (Citeline, KMR) - 3 years At Precision for Medicine, I have worked on integrating the data of all the above mentioned disparate data platforms in 1 single dimension model (ERP, HR, RM, CRM) for creating the centralized enterprise analytics platform. I am eager to work with you, to provide reliable, consistent, and High-Level solutions to design/development challenges. Please contact me, so we can discuss how we can work together to FULLY meet your Business Needs!

Data is powerful — but only when it’s usable. I help businesses design and build AI-ready data platforms — from raw data ingestion to real-time analytics and intelligent insights. With 11+ years of experience in Data and Cloud ecosystems, I specialize in: ✔ Scalable Spark & Databricks pipelines ✔ Lakehouse architectures (Azure / AWS) ✔ Real-time streaming (Kafka, Spark Streaming) ✔ ETL modernization (Talend, Informatica → Cloud) ✔ ML-ready data engineering foundations Whether you need: A new data platform built from scratch Migration to Databricks or Cloud Performance optimization Data pipelines for AI/ML use cases I focus on writing clean, production-grade, scalable solutions — not quick hacks. Clients describe me as reliable, detail-oriented, and easy to work with. If you're looking for someone who understands both engineering depth and business outcomes, let's connect.