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I will migrate sql server to postgresql with zero data loss
Senior Database Engineer: Legacy SQL Server to PostgreSQL Migration Specialist
Database Administrator and Developer specializing in complex, high-stakes legacy database migrations and data modernization. I build configuration-driven migration frameworks that move enterprise SQL ...
About this Gig
Are legacy database crashes, slow queries, or character encoding issues holding back your application? I provide enterprise-grade PostgreSQL migrations, schema translation, and backend modernizations - ensuring zero data loss and seamless execution.
WHAT I MIGRATE TO POSTGRESQL:
Microsoft SQL Server & MS Access Backends
MySQL / MariaDB & Legacy ERP Databases
Flat Files, CSVs, and Unstructured Data Pipelines
WHAT YOU GET:
Schema & DDL Translation (Tables, Primary/Foreign Keys, Constraints)
Automated Data Ingestion & Batch ETL Pipelines
UTF-8 Character Encoding Remediation (Fixes Special Char Crashes)
Audit-Ready Row Count & Checksum Validation Report
SCOPE BOUNDARIES & EXCLUSIONS:
Standard packages cover backend data, schemas, and table migration.
Rebuilding or debugging custom frontend UI, application forms, reports, or third-party web apps is NOT included in base data migration.
Pre-existing historical data corruption requires a custom quote.
Every database is unique. Please send a direct message with your source engine and table size BEFORE ordering to ensure the exact scope and custom milestone for your project!
Other Databases Services I Offer
FAQ
What details do you need before I place an order?
Please send a direct message with: 1. Your current source database engine (e.g., MS Access, SQL Server, MySQL). 2. Approximate database size and table/row count. I will review your setup and confirm the exact package or custom offer needed.
How do you ensure no data is lost during the migration?
I perform an automated row-count reconciliation and checksum/hash validation across every table post-migration. You receive an audit report verifying that 100% of your source data matches the target PostgreSQL database before project sign-off.
Does this Gig include rebuilding or fixing my front-end forms/application?
No. This Gig focuses exclusively on backend database modernization (tables, schemas, indexes, data transfer, and linked tables). Application-level fixes, form UI redesigns, or custom VBA/API debugging are excluded from base data migration packages but can be quoted as a separate custom milestone.
How do you handle special characters or encoding crashes during migration?
I utilize custom ETL routines to remediate character encoding mismatches (such as Windows-1252 to UTF-8). This fixes string truncation and syntax errors caused by special characters, symbols, or multi-byte sequences.
Can you perform migrations on databases with live/active users?
Yes. For active systems, I perform dry-run staging migrations to measure batch transfer speeds. Then I will schedule the final cutover during your low-traffic or offline maintenance window to minimize business disruption.
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
F frentil
Switzerland
Jennifer provided exceptional data migration and automation services. Right from the start, her professionalism and proactive communication were evident. She meticulously handled every detail, ensuring a deep understanding of my project needs. Jennifer's work was exemplary, seamlessly migrating and designing my data infrastructure with precision.
$100-$200
Price
2 days
Duration
Helpful?V vic_fivver
Romania
We start with one "scenario" in mind but in data migration "inevitable" could happen. Finally, we adopt a step by step approach and reach together the finish line. I recommend Jeff as a good professional person in "working with databases". Thank you Jeff.
$100-$200
Price
Helpful?G 
gianluciani
Panama
Great work!
$50
Price
Helpful?
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
F frentil
Switzerland
Jennifer provided exceptional data migration and automation services. Right from the start, her professionalism and proactive communication were evident. She meticulously handled every detail, ensuring a deep understanding of my project needs. Jennifer's work was exemplary, seamlessly migrating and designing my data infrastructure with precision.
$100-$200
Price
2 days
Duration
Helpful?V vic_fivver
Romania
We start with one "scenario" in mind but in data migration "inevitable" could happen. Finally, we adopt a step by step approach and reach together the finish line. I recommend Jeff as a good professional person in "working with databases". Thank you Jeff.
$100-$200
Price
Helpful?G gianluciani
Panama
Great work!
$50
Price
Helpful?
