You will get your slow database tuned, or migrated safely with zero data loss
Project details
Slow queries and a messy schema quietly cost you users, server spend and developer time. I fix both, and I move databases without losing rows.
I work mainly with PostgreSQL, MySQL and MongoDB. A typical engagement starts with profiling: I find the queries that actually hurt, look at the indexes and access patterns behind them, and show you the numbers before and after rather than just saying it feels faster.
For migrations I plan the cutover properly. That means a schema mapping, a dry run on a copy, row counts and checksums to prove nothing was lost, a rollback path if something goes wrong, and a short maintenance window instead of a long one.
You get the scripts, the migration plan and a written summary of what changed and why, so your team can repeat it.
Tell me what is slow or what you are moving from and to, and I will tell you which tier fits.
I work mainly with PostgreSQL, MySQL and MongoDB. A typical engagement starts with profiling: I find the queries that actually hurt, look at the indexes and access patterns behind them, and show you the numbers before and after rather than just saying it feels faster.
For migrations I plan the cutover properly. That means a schema mapping, a dry run on a copy, row counts and checksums to prove nothing was lost, a rollback path if something goes wrong, and a short maintenance window instead of a long one.
You get the scripts, the migration plan and a written summary of what changed and why, so your team can repeat it.
Tell me what is slow or what you are moving from and to, and I will tell you which tier fits.
Database Type
MySQL, PostgreSQL, MongoDBWhat's included
| Service Tiers |
Starter
$300
|
Standard
$750
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 18 days |
Number of Revisions | 1 | 2 | 3 |
Number of Tables Added | 0 | 0 | 0 |
Schema Diagram | - | ||
Permissions Setup | - | - | - |
Import/Export Data | - | - | |
Admin Panel Setup | - | - | - |
Frequently asked questions
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About Harvinder
Full-Stack & AI Developer | OpenAI, Claude, RAG | Node, Next.js, MERN
Jodhpur, India - 1:40 am local time
What I do:
• Backend APIs in Node.js, TypeScript, NestJS and Express — designed, documented (OpenAPI), and tested
• Database engineering — PostgreSQL and MongoDB schema design, migrations, indexing, and query tuning
• AWS architecture and cost reduction — ECS, Lambda, RDS, S3, CloudFront, Docker
• Integrations — Stripe and payment gateways, OpenAI, POS and third-party APIs, webhooks with idempotency and retries
• Inherited codebases — I read existing code and work inside its conventions instead of proposing a rewrite
Recent work:
• Backend for an EV charging platform monitoring 1,000+ chargers in real time
• AI-driven lead generation SaaS (Node.js, MongoDB, Next.js, Playwright)
• AWS infrastructure rework that cut a client's monthly cloud spend by over 30%
How I work: I scope before I code, send a written plan you can correct, flag assumptions instead of guessing silently, and give you daily written updates. You get production-ready code, migrations that are safe to run, and documentation your team can actually use.
Available 30+ hrs/week with EST/CET overlap. Tell me what's breaking or what you need built, and I'll tell you honestly whether I'm the right person for it.
Steps for completing your project
After purchasing the project, send requirements so Harvinder can start the project.
Delivery time starts when Harvinder receives requirements from you.
Harvinder works on your project following the steps below.
Revisions may occur after the delivery date.
Profiling and plan
I profile the database, identify the queries and schema issues that matter, and send you a short plan with expected impact before changing anything.
Apply changes on a copy
Indexes, query rewrites, schema changes or the migration are built and tested against a copy of your data, with before and after timings and row-count checks.