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You will get Fix slow Python API & reduce latency (FastAPI/Django/PostgreSQL)

Kartik K.Status: Offline
Kartik K. Kartik K.
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Let a pro handle the details

Buy Web Application Programming services from Kartik, priced and ready to go.
Kartik K.Status: Offline
Kartik K. Kartik K.
Preview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Kartik, priced and ready to go.

Project details

Most backend issues (slow APIs, timeouts, 500 errors) are not random — they come from hidden problems in database queries, request handling, or system design.

I specialize in quickly identifying the root cause and fixing it with a structured approach — not trial and error.

Whether it’s a FastAPI/Django endpoint, PostgreSQL query, or integration issue, I focus on making your backend stable, fast, and reliable.

You’ll get a clear diagnosis, a fix plan, and clean implementation — so the problem doesn’t come back.
Programming Languages
Python
Coding Expertise
Performance Optimization, Security
What's included
Service Tiers Starter
$79
Standard
$179
Advanced
$349
Delivery Time 3 days 5 days 7 days
Number of Revisions
123
Design Customization
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Content Upload
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Responsive Design
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Source Code
Optional add-ons You can add these on the next page.
Fast Delivery
+$50 - $150

Frequently asked questions

Kartik K.Status: Offline

About Kartik

Kartik K.Status: Offline
Backend Engineer | Fixing Slow APIs, Bugs & Performance Issues
Mumbai, India - 7:00 am local time
If your API is slow, breaking, or not scaling, I can help fix it fast. Most backend issues I work on come down to inefficient database queries, blocking operations, or poorly structured APIs, and I focus on identifying the root cause quickly and delivering fixes that actually hold in production. I regularly help startups debug failing APIs, optimize PostgreSQL performance, fix integrations, and stabilize backend systems without requiring a full rewrite. Recently, I reduced API latency from 4.2s to 180ms by fixing blocking DB calls and improved query performance from 3.1s to 38ms using indexing and query optimization.

Along with fixes and optimization, I also build backend systems from scratch with clean architecture, proper validation, and production-ready setup so they don’t break later. I have 6+ years of experience building scalable backend systems and full-stack platforms, including systems handling 500K+ users and millions of records.

My core stack includes Python, Django, FastAPI, and Flask; PostgreSQL, MySQL, and Elasticsearch; and tools like Docker, Kubernetes, Azure, AWS, Kafka, Celery, and Redis. I’ve worked on API design, authentication systems, integrations, and distributed architectures across different products.

I don’t jump into random fixes — I first identify the exact issue, propose a clear fix plan, and implement a clean, reliable solution. For new builds, I focus on creating structured, scalable backends that are easy to extend and maintain.

I usually start with a quick 1–2 hour backend audit to identify issues or define the right approach before development. If you’re dealing with slow APIs, backend bugs, or need a reliable backend built from scratch, feel free to message me, and I’ll take a look.

Steps for completing your project

After purchasing the project, send requirements so Kartik can start the project.

Delivery time starts when Kartik receives requirements from you.

Kartik works on your project following the steps below.

Revisions may occur after the delivery date.

Feedback and testimonial

I would require feedback and testimonial so i keep on improving

Review the work, release payment, and leave feedback to Kartik.