You will get Backend Code Review and Architecture Audit with Report
Project details
You will get a clear, honest assessment of your backend from a senior engineer — what's solid, what's fragile, what won't scale, and what to fix first.
Most backends have problems that stay hidden until they cause an outage, a security incident, or a slowdown under load. An audit finds them before they cost you. I review your architecture, code quality, database design, scalability, and security, then give you a report that's actually useful — not a generic checklist, but specific findings about your system with priorities.
You'll know exactly where the risks are and what to address first, whether you fix it yourself, with your team, or hire me to do it.
With 70+ projects and experience on systems handling 50,000+ requests a day, I know what breaks at scale and what to look for. You get a senior engineer's eyes on your backend, with clear direction you can act on.
Most backends have problems that stay hidden until they cause an outage, a security incident, or a slowdown under load. An audit finds them before they cost you. I review your architecture, code quality, database design, scalability, and security, then give you a report that's actually useful — not a generic checklist, but specific findings about your system with priorities.
You'll know exactly where the risks are and what to address first, whether you fix it yourself, with your team, or hire me to do it.
With 70+ projects and experience on systems handling 50,000+ requests a day, I know what breaks at scale and what to look for. You get a senior engineer's eyes on your backend, with clear direction you can act on.
Programming Languages
PythonCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$250
|
Standard
$400
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Number of Revisions | 2 | 4 | 7 |
Number of Pages | 2 | 5 | 7 |
Design Customization | - | - | |
Content Upload | - | ||
Responsive Design | - | ||
Source Code |
Frequently asked questions
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Rajinder has shown good understanding of the AI Video workflow we are building. He has been diligently implementing the project with good communication. We are looking forward to working with him long term and I would highly recommend him.
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Sohin S.
Apr 23, 2026
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Talence A.
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Skills Required:
• Python (FastAPI, Flask), OpenAI/GPT, Google NLP
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Bola A.
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About Rajinder
Senior Python Backend Engineer | Scalable Systems & API Architecture
92%
Job Success
Jawalamukhi, India - 11:17 am local time
Most backend problems aren't really about writing code. They come from decisions made early that get expensive later. I focus on getting those right: how the system is structured, how the data is modeled, where the bottlenecks will show up, and what to build now versus what to leave room for. That judgment is what separates a system that scales from one that gets rewritten.
What I do:
Backend & APIs — FastAPI and Django REST, built for real traffic. Versioned, well-structured APIs with proper error handling, pagination, and idempotency — not just happy-path code.
Architecture & scale — Multi-tenant SaaS systems with tenant isolation and role-based access. Structuring services and data flow so the system stays maintainable as it grows, not just on day one.
Data layer — PostgreSQL schema design, indexing, query optimization, and migrations without downtime. Redis for caching and queues.
Async & background work — Celery, event-driven workflows, webhook handling, and retries — the parts that need to keep working when external services don't.
Taking it to production — I deploy what I build: Docker, AWS/GCP, CI/CD, and monitoring. I own the system end to end, so nothing gets handed over half-finished.
When a system needs it, I also cover automation — n8n, Make, Zapier, or custom Python scripts — along with payment and third-party API integrations, so you get a complete build rather than parts to stitch together.
Why hire me:
70+ completed projects, $80K+ earned on Upwork, 5,500+ hours, and consistent 5-star reviews. Recent work includes a recruitment platform handling 50K+ requests/day, a multi-service exam platform, and multi-tenant SaaS systems running in production. The code is clean, documented, and maintainable, and I deliver on time.
If you need a senior engineer to build a backend that stays reliable long after launch — and to make the right calls while building it — message me.
Tech: Python, FastAPI, Django, PostgreSQL, Redis, Celery, Docker, AWS, GCP
Steps for completing your project
After purchasing the project, send requirements so Rajinder can start the project.
Delivery time starts when Rajinder receives requirements from you.
Rajinder works on your project following the steps below.
Revisions may occur after the delivery date.
Review codebase and understand the system
I go through your code and architecture to understand how the system is built, what it does, and how the pieces fit together.
Analyze architecture, code, and database
I assess your architecture, code quality, database design, and structure — looking at how it's organized and where it's likely to cause problems.