Senior .NET Backend Engineer: Data Migration & ETL

Tata Consultancy Services Limited; Sydney; On-site; AUD 130,000 - 170,000; Full time

Job summary

Tata Consultancy Services Limited in Sydney is seeking an experienced backend engineer to lead a large-scale system migration programme. You will build SQL Server and .NET-based migration utilities/services and develop APIs to extract, transform and load data.

This role requires 8+ years in backend data migration, expertise with SFTP-based ingestion, and strong SQL skills for data validation, reconciliation, and error handling.

Qualifications

• Experience with Microsoft SQL Server development and backend engineering experience.
• Experience developing data migration scripts, utilities and migration services.
• Strong SQL skills for extraction, transformation, validation and data reconciliation.
• Experience with file-based data migration, including structured file formats.
• Hands-on experience with SFTP-based file transfer and ingestion.
• Experience integrating source systems with target platforms through APIs, batch processing and ETL.
• Ability to build migration engines/services for high-volume backend data movement.
• Strong focus on migration validation, data integrity, reconciliation and error handling.

Responsibilities

• Develop backend components for a large-scale system migration programme.
• Build SQL Server and .NET-based migration utilities/services.
• Develop migration scripts and APIs to extract, transform and load data.
• Process data received through SFTP/files and load it into target systems.
• Build and support ETL/batch interfaces between source and target platforms.
• Implement data validation and reconciliation across migration stages.
• Troubleshoot migration failures, data-quality issues and interface errors.
• Support migration testing, rehearsal and production cutover activities.

Skills

.NET/C#

REST APIs

Tools

Microsoft SQL Server

SQL

SFTP

File Processing

Job description

Tata Consultancy Services Limited in Sydney is seeking an experienced backend engineer to lead a large-scale system migration programme. You will build SQL Server and .NET-based migration utilities/services and develop APIs to extract, transform and load data.

This role requires 8+ years in backend data migration, expertise with SFTP-based ingestion, and strong SQL skills for data validation, reconciliation, and error handling.