ETL Developer ( Snowflake, ADLS, Bigquery, cloud , big data, )Group Manager - RNA

Company Description

WNS (Holdings) Limited (NYSE: WNS), is a leading Business Process Management (BPM) company. We combine our deep industry knowledge with technology and analytics expertise to co-create innovative, digital-led transformational solutions with clients across 10 industries. We enable businesses in Travel, Insurance, Banking and Financial Services, Manufacturing, Retail and Consumer Packaged Goods, Shipping and Logistics, Healthcare, and Utilities to re-imagine their digital future and transform their outcomes with operational excellence.We deliver an entire spectrum of BPM services in finance and accounting, procurement, customer interaction services and human resources leveraging collaborative models that are tailored to address the unique business challenges of each client. We co-create and execute the future vision of 400+ clients with the help of our 44,000+ employees.

Job Description

Job Description:

Design, develop, and maintain relational and non-relational database systems.

Define analytical architecture including datalakes, lakehouse, data mesh and medallion patterns

Ability to understand & analyze business requirements and translate them into analytical or relational database design

Able to design for non-SQL datastores

Optimize SQL queries, stored procedures, and database performance.

Create and maintain ETL processes for data integration from various sources.

Work closely with application teams to design database schemas and support integration.

Monitor, troubleshoot, and resolve database issues related to performance, storage, and replication.

Implement data security, backup, recovery, and disaster recovery procedures.

Ensure data integrity and enforce best practices in database development.

Participate in code reviews and mentor junior developers.

Collaborate with business and analytics teams for reporting and data warehousing needs.

Must Have: Strong expertise in SQL and PL/SQL

Hands-on experience with at least one RDBMS: Snowflake, ADLS, Bigquery, SQL Server, Oracle, PostgreSQL, or MySQL

Experience with NoSQL databases: MongoDB, Cassandra, or Redis (at least one)

ETL Development Tools: SSIS, Informatica, Talend, or equivalent ( changed - Good to have )

Experience in performance tuning and optimization

Database design and modeling tools: Erwin, dbForge, or similar

Cloud platforms: Design and Development experience on cloud services AWS/GCP/ AZURE(must have)

Understanding of indexing, partitioning, replication, and sharding

Knowledge of CI/CD pipelines and DevOps practices for database deployments( Nice to Have)

Cloud Certified Engineer( Nice to have)

Experience with Big Data technologies (Hadoop, Spark)Experience working in Agile/Scrum environments (Must have )

Knowledge of star schema and snowflake schema (Must have )

Qualifications

Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field.8+ years of relevant experience in database design and development

Qualifications

Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field.8+ years of relevant experience in database design and development