Snowflake Migration-Technical Lead / Senior Developer

Headquartered in Princeton New Jersey, AH Infotech LLC, (4105 US Route 1, Unit 4, Monmouth Junction, NJ 08852) is an IT consulting and services company committed to offering customized technology solutions for businesses. Founded in 2015, the company employs over 200 people with global operations and provides impactful results to its customers across North America, Europe, and Asia -Pacific. AH Infotech provides services in cloud migration, cloud operations, enterprise services, and cloud enablement. AH Infotech is an organization focused on delivering high-quality technology solutions for business; we help our clients in digital transformation in ways that meets security, affordability, and scalability concerns.

We are looking for a highly experienced Snowflake Migration Architect / Technical Lead / Senior Developer to lead the migration of large-scale on-premises databases and data warehouse platforms to Snowflake Cloud Data Platform.

The ideal candidate must have strong hands-on Snowflake expertise, experience designing and executing complex database/data warehouse migrations, and prior experience working within the Healthcare domain.

This is a senior hands-on role requiring the candidate to participate in architecture, design, development, migration planning, performance optimization, testing, cutover, and post-production stabilization.

• Lead end-to-end migration of on-premises databases/data warehouses to Snowflake.
• Assess the existing on-prem environment, database objects, schemas, ETL processes, dependencies, data volumes, interfaces, and workloads.
• Define the Snowflake target architecture and migration strategy, including migration waves, cutover approach, rollback strategy, and production stabilization.
• Design scalable Snowflake architecture including databases, schemas, warehouses, storage, compute, roles, security, and access controls.
• Perform hands-on development using Snowflake SQL, SnowSQL, Stored Procedures, Streams, Tasks, Dynamic Tables, Snowpipe, and related Snowflake capabilities.
• Migrate large volumes of historical and incremental data from legacy/on-prem databases into Snowflake.
• Re-engineer or modernize existing ETL/ELT pipelines for the Snowflake platform.
• Design data ingestion patterns including batch, incremental/CDC, and near-real-time processing where required.
• Perform source-to-target mapping, data reconciliation, validation, and migration testing.
• Optimize Snowflake workloads for query performance, warehouse utilization, scalability, and cost.
• Identify and remediate performance bottlenecks in SQL queries, data models, pipelines, and warehouse configurations.
• Design appropriate data security, RBAC, masking, encryption, auditing, and governance controls.
• Ensure solutions meet applicable healthcare data security and privacy requirements.
• Work with application, infrastructure, security, data engineering, DBA, business, and healthcare teams throughout the migration.
• Lead technical design reviews and provide guidance to developers and data engineers.
• Support production cutover, troubleshooting, hypercare, and post-migration optimization.
• Prepare architecture diagrams, migration plans, technical specifications, runbooks, and operational documentation.

Candidates must have previous experience working with healthcare data/platforms. Experience with areas such as patient/member data, claims, providers, eligibility, clinical data, EHR/EMR, payer/provider systems, PHI/PII, HIPAA-controlled environments, HL7, or FHIR is highly preferred.