Renjith Sebastian

• Spearheaded data modernization and AI/ML adoption initiatives, driving digital transformation and operational efficiency within healthcare and software development sectors.
• Designed and implemented robust AI/ML strategies using AWS services (Redshift, SageMaker, Glue, Lambda, etc.), enabling scalable analytics and machine learning solutions.
• Partnered with cross-functional stakeholders, including executive leadership, to define architectural vision, communicate complex technical concepts, and align solutions with business objectives.
• Directed engineering teams in adopting architectural best practices, resulting in improved code quality, enhanced security, and optimized cloud infrastructure.
• Championed the adoption of accelerator utilities and reusable tools, fostering innovation and promoting technology efficiency.
• Supported cloud migration readiness by assessing legacy architectures, providing technical guidance, and ensuring seamless execution of migration strategies.
• Architected and led the migration of critical workloads from Teradata to AWS Redshift as part of the On-Premises Simplification Programme, ensuring data integrity, performance, and cost optimization.
• Conducted architect connect sessions to share AWS best practices, cost optimization strategies, and insights on emerging trends in cloud computing, data analytics, and GenAI.
• Demonstrated expertise in infrastructure and database architecture, cloud security, networking, and the end-to-end lifecycle of AI/ML and GenAI solutions.
• Contributed to the development of data lakes and advanced analytics platforms, empowering data-driven decision-making and organizational innovation.
• Committed to continuous learning and professional development, actively pursuing cloud certifications and staying abreast of evolving AWS technologies and industry best practices.

• Utilized Lambda, Python, Glue, MR, Redshift, Aurora RDS, and S3 for project initiatives.
• Drove collection of new data and refined existing data sources to enhance quality.
• Supported data analysts and product managers by translating business needs into functional specifications.
• Executed ETL delivery aligning with architectural requirements on cloud.
• Facilitated decision-making processes while anticipating organizational needs.
• Collaborated with architects to assess data against cloud reference architectures.
• Managed Redshift clusters through design, data load, and performance tuning.
• Created AWS Glue jobs using PySpark and Spark SQL, optimizing workflows.

• Company Overview: Worked for Fortune 500 US Based Travel and Hospitality client as a DBA / Data Architect
• Lucky to be a part of Multiple Data warehousing and Cloud Migration Projects as Data Architect/DBA in Various Domains like Insurance, Banking, Oil and Gas, Hospitality
• Responsible for the enterprise data architecture and all the data modelling work for multiple domains and data warehouses.
• Data modelling work includes OLTP and OLAP data modelling for transactional systems, dimensional model for analytics and reporting
• Responsible for Administration and Implementation of Best practices for Various Cloud based storages and Databases
• Responsible for Data Governance implementation at user level to ensure the quality, availability, integrity, security, and usability within an organization
• Performed Database monitoring activities and implementation of best practices and performance tuning
• Performed security administration and DBA for Various cloud-based databases (Redshift/Snowflake/Vertica/MongoDB/Cassandra)
• Implemented the end to end Migration projects for on premises to Cloud platforms (Oracle, Redshift, Snowflake, Aurora, MongoDB)
• Responsible for end to end Administration for Vertica /Snowflake/Redshift DW

• Served as System Analyst and Lead Developer for Fortune 500 UK-based client in insurance and banking sectors.
• Conducted performance tuning at application and database levels for optimal efficiency.
• Managed database security administration to protect sensitive information.
• Executed backup and recovery processes to ensure data integrity.
• Performed upgrades and utilized RMAN for improved database management.
• Monitored system and application performance to identify areas for enhancement.
• Developed PL/SQL scripts and shell scripts to automate tasks on Unix and Linux platforms.

• Company Overview: Public Sector UNDER Kerala GOVT

Oracle Developer /DBA