Senior Data Migration Engineer - Remote Tooling Lead

Calliere; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Calliere is seeking a Senior Developer to own and build tooling for migrating client data from legacy systems. This remote role involves hands-on coding in C# and SQL, developing a robust staging schema, and automating complex migrations for financial services clients.

You will troubleshoot live migration issues, support migration analysts, and write clear client-facing instructions. Strong SQL/C# skills and cloud experience (AWS/Azure) are essential, with a data science background a plus.

Qualifications

• 5+ years building data migration or conversion tooling.
• Strong SQL (SQL Server and Postgres) and C#, with Python or PowerShell scripting.
• Deep knowledge of legal accounting data, including billing and trust accounting.
• Cloud experience in AWS and Azure with SOC 2, data residency and retention.
• Clear customer-facing communication; able to explain technical steps simply.
• Comfort with AI coding tools and automating repeat work.
• A degree in data science, data analytics or related field is a plus.

Responsibilities

• Design, build and maintain conversion tooling in C# and SQL across legal accounting data sources.
• Develop and extend a staging schema library for clean export to JSON and other formats.
• Automate repetitive migration tasks with scripts and cloud tooling to reduce manual work and costs.
• Tackle the most complex migrations from legacy extraction through mapping and go-live.
• Troubleshoot live issues on databases and cloud-hosted servers; write custom SQL as needed.
• Support migration analysts with code reviews and technical guidance.
• Write client-facing technical instructions and document mapping logic and validation rules.

Skills

C#

SQL (SQL Server, Postgres)

Data migration tooling

Python or PowerShell scripting

Customer-facing communication

AI coding tools

Education

Degree in data science / data analytics or related field

Tools

AWS

Azure

Claude Code

Job description

Calliere is seeking a Senior Developer to own and build tooling for migrating client data from legacy systems. This remote role involves hands-on coding in C# and SQL, developing a robust staging schema, and automating complex migrations for financial services clients.

You will troubleshoot live migration issues, support migration analysts, and write clear client-facing instructions. Strong SQL/C# skills and cloud experience (AWS/Azure) are essential, with a data science background a plus.