You will get bug fixed of your django backend, REST API
Top Rated
Top Rated
Project details
Is your Django app throwing errors, returning broken API responses, or loading too slowly? I specialise in diagnosing and fixing Django backend issues cleanly and permanently — no temporary patches, no shortcuts.
I have hands-on experience rescuing a live production SaaS where the homepage took 90+ seconds to load. After a full diagnosis and architectural fix, it loaded in under 1 second. That same diagnostic approach goes into every bug fix I deliver.
What I Fix
• Backend errors — 500, 404, migration failures, TemplateDoesNotExist
• REST API issues — serializer validation, permissions, authentication, CORS
• Deployment problems — Gunicorn, Nginx, static files, environment variables, AWS, Digital Ocean
• Database issues — slow queries, missing indexes, N+1 problems
• Admin panel bugs and configuration issues
• Performance problems — caching, query optimisation, load time reduction
Scope Breakdown
• Starter — Single bug diagnosis and fix with explanation
• Standard — Up to 3 bugs fixed plus basic performance review
• Advanced — Full performance audit, query optimisation, caching implementation, and detailed report
Clean fix. Root cause explained. No recurrence.
I have hands-on experience rescuing a live production SaaS where the homepage took 90+ seconds to load. After a full diagnosis and architectural fix, it loaded in under 1 second. That same diagnostic approach goes into every bug fix I deliver.
What I Fix
• Backend errors — 500, 404, migration failures, TemplateDoesNotExist
• REST API issues — serializer validation, permissions, authentication, CORS
• Deployment problems — Gunicorn, Nginx, static files, environment variables, AWS, Digital Ocean
• Database issues — slow queries, missing indexes, N+1 problems
• Admin panel bugs and configuration issues
• Performance problems — caching, query optimisation, load time reduction
Scope Breakdown
• Starter — Single bug diagnosis and fix with explanation
• Standard — Up to 3 bugs fixed plus basic performance review
• Advanced — Full performance audit, query optimisation, caching implementation, and detailed report
Clean fix. Root cause explained. No recurrence.
Programming Languages
PythonWhat's included
| Service Tiers |
Starter
$30
|
Standard
$70
|
Advanced
$150
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$10 - $30Frequently asked questions
4 reviews
(4)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
SF
Shafiul F.
Jan 4, 2026
SAP BTP Integration Suite and Backend system integration project
ND
Nikola D.
Nov 28, 2025
Rewrite React to Django app using Wagtail CMS
All good, job done.
SF
Shafiul F.
Aug 31, 2025
Python Django tenants developer needed
Python DJango expert, it was nice working with him
CN
Christopher N.
May 18, 2025
Django Developer (Freelance) for Ongoing Web App Projects
About Md Mojno
Django Developer - Multi-Tenant SaaS & Legacy System Rescue
100%
Job Success
Joypurhat, Bangladesh - 2:37 am local time
My work covers two modes: taking over broken systems and restoring them, and building complex platforms from the ground up.
PROJECT 1 — Sellzzy (Multi-Tenant Digital Commerce SaaS)
Grew from developer to engineering lead on a live production platform over nearly two years, owning architecture and delivery standards.
The problem when I joined:
• Homepage took 90+ seconds to load
• Outdated dependencies causing cascading failures
• Zero documentation, blocking team onboarding
What I delivered:
• 98% load time reduction — 90+ seconds to under 1 second
• Store dashboard loads in ~0.5s, storefront in ~1s average
• Hybrid Django MVT + REST API architecture — SPA-like experience without a frontend rebuild
• Full codebase refactor, dependency upgrade, and documentation that restored team velocity
• Led the team for the final 7 months: architecture decisions, code review, delivery standards
PROJECT 2 — CashSheets (Multi-Tenant Accounting SaaS)
Architected and built solo, from an open-source foundation to a production-ready system:
• Multi-tenant architecture with full tenant isolation (django-tenants)
• Pluggable integration framework — QuickBooks Online, Square POS, Wave
• Wagtail CMS as the admin layer, with a complete subscription management system built inside it
• Dual-level Stripe integration — platform billing and tenant-level payments as separate concerns
TECH STACK
Backend: Python, Django, DRF, Celery, Redis, RabbitMQ, django-tenants, Wagtail
Frontend: React.js, Next.js, Tailwind CSS
Databases: PostgreSQL, MySQL
Cloud: AWS (EC2, S3, RDS, SES, CodePipeline), Docker, Nginx, CI/CD
Integrations: Stripe, PayPal, Shopify, QuickBooks Online, Square POS, Wave
Tools: Claude, Amazon Q, opencode, cursor
SERVICES
• Multi-tenant SaaS architecture and development
• REST API design (DRF)
• Legacy system rescue — performance, architecture, dependency modernization
• Full-stack development (Django + React/Next.js)
• Stripe subscription billing, third-party integrations
• AWS deployment and CI/CD pipelines
• Technical team leadership and code review
I've handled both sides of the hardest Django work: rescuing a broken production system under live traffic, and architecting a complex platform solo with no one to defer to. My background in Language & Literature also means clear specs and documentation — something clients have specifically called out in reviews.
If you're building a SaaS product or need a Django system architected properly, let's talk.
Steps for completing your project
After purchasing the project, send requirements so Md Mojno can start the project.
Delivery time starts when Md Mojno receives requirements from you.
Md Mojno works on your project following the steps below.
Revisions may occur after the delivery date.
Review & Plan
I analyze the issue, review your code, and confirm the scope of the fix before starting work.
Debug & Fix
I debug the problem in Django/DRF/backend code or deployment setup and implement the fix