You will get a senior-level technical audit of your software project
Top Rated
Project details
With over 15 years of experience as a Senior Software Engineer, Team Lead, and Solution Architect, I provide comprehensive technical audits for startups, SaaS companies, and enterprise applications.
I will thoroughly assess your application's architecture, code quality, scalability, performance, security, cloud infrastructure, databases, and development processes to identify risks, bottlenecks, and opportunities for improvement.
Whether you're preparing to scale, experiencing technical challenges, planning a major release, onboarding new developers, or simply want an expert second opinion, you'll receive practical recommendations that can be implemented immediately.
My experience includes building and leading projects using Node.js, React, Next.js, Python, AWS, Google Cloud, Docker, Kubernetes, MySQL, PostgreSQL, MongoDB, Redis, and modern cloud architectures.
The final deliverable includes a structured audit report, prioritized recommendations, and a clear roadmap for improving the reliability, maintainability, and scalability of your product.
I will thoroughly assess your application's architecture, code quality, scalability, performance, security, cloud infrastructure, databases, and development processes to identify risks, bottlenecks, and opportunities for improvement.
Whether you're preparing to scale, experiencing technical challenges, planning a major release, onboarding new developers, or simply want an expert second opinion, you'll receive practical recommendations that can be implemented immediately.
My experience includes building and leading projects using Node.js, React, Next.js, Python, AWS, Google Cloud, Docker, Kubernetes, MySQL, PostgreSQL, MongoDB, Redis, and modern cloud architectures.
The final deliverable includes a structured audit report, prioritized recommendations, and a clear roadmap for improving the reliability, maintainability, and scalability of your product.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$149
|
Standard
$499
|
Advanced
$999
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 6 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - | - |
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Elie F.
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Great job as usual, overcame our expectations
BB
Benjamin and Daniel B.
Aug 6, 2025
Reliable Full-Stack Developer (Stripe, API, Frontend) to Finalize and Extend Existing Web Platform
AG
Amit G.
Aug 5, 2025
Full Stack Development
LK
Lise K.
Jul 3, 2025
Tech lead/Dev needed for Stripe Custom Connected Account integration
EF
Elie F.
May 30, 2025
Tech lead/Dev needed for Stripe Custom Connected Account integration
Great job, skilled dev.
About Serhii
Python & React Engineer | SaaS Backend | API Integrations | AI
100%
Job Success
Krakow, Poland - 4:25 am local time
With 12+ years of engineering experience and deep focus on Python (FastAPI, Django) — I ship production SaaS that handles real load: multi-tenant platforms, Stripe billing, CRM/ERP integrations, and React frontends connected to complex backends.
Where I add the most value:
→ SaaS backend architecture (FastAPI, Django, PostgreSQL)
→ API design and third-party integrations (Stripe, CRMs, ERPs)
→ Multi-tenant platform infrastructure
→ React frontends connected to complex backends
→ AI feature integration (OpenAI, LangChain) built into the system
If you need a system that works in production — not just in demos — let's talk.
Steps for completing your project
After purchasing the project, send requirements so Serhii can start the project.
Delivery time starts when Serhii receives requirements from you.
Serhii works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Requirements Review
I review your project requirements, business goals, architecture documentation, infrastructure setup, and available source code.
Technical Audit
I perform a detailed assessment of architecture, code quality, security, performance, scalability, databases, APIs, cloud infrastructure, and development workflows.