Database Migration Project Resume Project Example
A SQL Server to PostgreSQL migration that mapped schemas with comparison tools, converted T-SQL to PL/pgSQL, validated row-level parity, and executed a phased cutover with rollback scripts.
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MARCUS WEBB
SQL Developer
Project
DB migration
Parity-tested- Migrated OLTP schema from SQL Server to PostgreSQL.
- Converted procedures to PL/pgSQL with parity test suites.
- Executed phased cutover with documented rollback scripts.
Why this project is valuable
Migration specialist signal
Cross-platform migration shows dialect fluency, schema discipline, and cutover planning SQL developers need on modernization projects.
Good ATS coverage
Supports database migration, PL/pgSQL, schema comparison, data validation, and cutover keywords.
Enterprise relevance
Lift-and-shift and replatform initiatives are common budget items hiring managers recognize.
Good interview depth
Discuss type mapping, identity sequences, procedure conversion, and validation strategy.
Project overview
A database migration project is credible SQL developer resume material because replatforming requires deep SQL dialect knowledge and rigorous parity testing—not just export/import clicks.
Schema Compare identified type and constraint differences; T-SQL procedures were rewritten as PL/pgSQL functions, sequences replaced IDENTITY columns, and checksum queries validated row counts and hash samples before a read-only cutover window.
On a resume, that gives you ways to describe migration runbooks, Flyway-versioned scripts, pgAdmin deployment, rollback paths, and application connection string cutover coordination.
Architecture overview
Project flowSchema inventory
SSMS and pgAdmin catalogs documented tables, constraints, and procedure dependencies.
Schema comparison
Comparison tools flagged type mismatches, collations, and missing foreign keys.
Script conversion
T-SQL procedures rewritten as PL/pgSQL with equivalent transaction semantics.
Data load and validate
Bulk copy plus checksum queries proved row-level parity on sample and full tables.
Flyway versioning
Ordered migration scripts applied consistently across staging and production targets.
Cutover and rollback
Read-only window, DNS cutover, smoke tests, and pre-written rollback scripts if parity failed.
What this project includes
- Schema inventory and comparison reports
- T-SQL to PL/pgSQL procedure conversion
- IDENTITY to sequence mapping
- Row-level checksum validation suites
- Flyway-versioned migration scripts
- Cutover runbook with rollback procedures
Tech stack
Migration work spans SSMS and pgAdmin with dialect conversion—not cloud IaC or application framework focus.
T-SQL
Source dialect procedures and schema scripts requiring conversion analysis.
PL/pgSQL
Target functions and triggers replicating SQL Server business logic.
SSMS
Documents source schema, dependencies, and baseline object definitions.
pgAdmin
Deploys PostgreSQL objects and validates target catalog state.
Flyway
Versions and applies ordered migration scripts across environments.
Schema Compare
Diffs source and target schemas to catch drift before cutover.
Features implemented
Dialect conversion
PL/pgSQL functions preserve transaction behavior from T-SQL procedures.
Type mapping
DATETIME2, MONEY, and NVARCHAR map cleanly to PostgreSQL equivalents.
Parity validation
Checksum and row-count suites prove data integrity before cutover.
Versioned migrations
Flyway scripts make promotions repeatable across environments.
Rollback readiness
Pre-written reverse scripts and connection fallback reduce cutover risk.
Dependency ordering
Objects deploy in FK-safe sequence documented in the runbook.
Resume bullet examples
These bullets present migration as SQL dialect and cutover engineering.
- Led SQL Server to PostgreSQL migration converting 40+ T-SQL stored procedures to PL/pgSQL with schema comparison reports and Flyway-versioned scripts.
- Mapped IDENTITY columns to PostgreSQL sequences and validated row-level parity with checksum queries across staging and production targets.
- Authored cutover runbooks with read-only windows, smoke-test queries in pgAdmin, and rollback scripts tested in rehearsal migrations.
- Resolved type and collation mismatches flagged by schema compare tools before application connection string cutover.
Skills demonstrated
This project demonstrates cross-platform SQL migration, PL/pgSQL conversion, and cutover planning.
Migration
Validation
Cutover
ATS keywords extracted from this project
Emphasize migration and dialect keywords over cloud landing zone terms.
Interview questions based on this project
Migration projects invite dialect and cutover questions.
What was hardest to convert?
T-SQL procedures using table variables and MERGE needed rewrite as temp tables and INSERT...ON CONFLICT in PL/pgSQL with equivalent locking behavior.
How did you prove parity?
Row counts per table plus MD5 checksums on stratified sample keys matched between source and target after each migration rehearsal.
How did you plan cutover?
Read-only window, freeze replication lag, run final delta scripts, smoke-test critical queries, then flip connection strings with rollback scripts ready.
How would you improve it?
Use logical replication for near-zero-downtime cutover on the largest tables.
Common mistakes
Focus on SQL dialect conversion and schema parity—not infrastructure provisioning.
Procedure conversion and validation show real migration depth.
Cutover runbooks with rollback scripts prove operational maturity.
Describe OLTP schema and procedure migration, not dashboards.
FAQ
Is a database migration a good SQL developer project?
Yes. Replatforming projects need SQL developers who understand both dialects and cutover risk.
Can I simulate without a full prod copy?
A subset schema with representative procedures and parity tests is enough for a portfolio.
Should I mention both SSMS and pgAdmin?
Yes. Showing fluency on source and target tools strengthens the story.
How many bullets should I use?
Two to four bullets on conversion, validation, Flyway scripts, and cutover.
Turn project details into resume evidence
Use this database migration to strengthen your SQL developer resume
Present T-SQL to PL/pgSQL conversion, parity validation, and recruiter-friendly cutover planning with stronger keyword alignment.
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