You will get Full Stack Developer React | React Node | Code & Architecture Audit
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Project details
Your codebase might be working — but is it built to last?
We provide a professional technical audit for products built on React, React Native, Node.js, Next.js, Supabase, Firebase, Laravel, Shopify, Python, or .NET. Whether your full stack React Node app was built in-house or by an outsource team — in 3–7 days our tech lead reviews your codebase and delivers an honest, structured assessment.
Built for:
— Startups post-MVP looking to scale
— Products from outsource full stack developers with quality concerns
— Teams struggling with instability or slow development
— Businesses before major refactoring or new features
— Companies without a strong technical lead
What you get:
— Code quality & architecture analysis
— Technical debt identification
— Scalability & maintainability assessment
— Critical risk report
— Refactoring & optimization recommendations
— Scope + estimate for fixing
Not just "your code is bad" — but exactly what's wrong, why it matters, and what to do about it.
Fixed price. No surprises. Delivered in days.
We provide a professional technical audit for products built on React, React Native, Node.js, Next.js, Supabase, Firebase, Laravel, Shopify, Python, or .NET. Whether your full stack React Node app was built in-house or by an outsource team — in 3–7 days our tech lead reviews your codebase and delivers an honest, structured assessment.
Built for:
— Startups post-MVP looking to scale
— Products from outsource full stack developers with quality concerns
— Teams struggling with instability or slow development
— Businesses before major refactoring or new features
— Companies without a strong technical lead
What you get:
— Code quality & architecture analysis
— Technical debt identification
— Scalability & maintainability assessment
— Critical risk report
— Refactoring & optimization recommendations
— Scope + estimate for fixing
Not just "your code is bad" — but exactly what's wrong, why it matters, and what to do about it.
Fixed price. No surprises. Delivered in days.
Project Type
Data Analysis, Development, Cybersecurity, Data Protection, IT, File Conversion, QA, User TestingWhat's included $500
These options are included with the project scope.
$500
- Delivery Time 7 days
- Number of Revisions 1
Frequently asked questions
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JT
Josef T.
Jun 27, 2026
Front- and Backend Developer for Master-Product-Data-SaaS in Precious Metals
Thank you, very friendly team.
MZ
Martin Z.
May 14, 2026
Senior Full-Stack Developer Needed for Code Review and QA
We were grateful for Oleksandr and his team's feedback on our project and hope to work again with them in the future.
NH
Nick H.
Feb 13, 2026
SaaS Booking Platform Audit
NG
Nigel G.
Jan 30, 2026
Full Stack Development
Excellent agency - work was of the highest quality and they worked with us closely to understand our business needs in great detail. Development team were very thorough, communicated in clear English and delivered quality work. QA team were excellent at exploratory testing and really helped polish the product before launch.
AA
Antal A.
Jan 12, 2026
Code Audit
About Oleksandr
Senior Full Stack Developer React | Full Stack Developer | React Node
100%
Job Success
Tallinn, Estonia - 5:33 am local time
Founders hire me when their MVP needs to ship in weeks - and still hold up past 100K users. I build AI-powered SaaS and mobile apps that real customers pay for. The kind of code your next developer won't have to rewrite.
PROBLEMS I SOLVE
Most founders come to me with one of these:
❌ No clear technical roadmap — every developer gives a different answer.
❌ An existing product that's slow, breaking, or impossible to maintain.
❌ A codebase from cheap developers — broken architecture, missed deadlines, technical debt blocking every new feature.
❌ Pressure to ship fast — but no trust left after being burned before.
Here's why it keeps happening: most freelancers code feature by feature without thinking about what happens at month six. I don't. Every decision I make — stack, architecture, deployment — assumes your product will grow, your team will change, and the next developer will need to read what I wrote.
120+ shipped projects. 20+ countries. Zero rebuilds requested.
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WHAT YOU GET
🔷 A technical roadmap before a single line of code is written
Every custom enterprise system starts with a plan. As a Full Stack Developer React specialist, I map out stack decisions, data models, and integrations first — whether it's a full stack developer React Node API, a full stack developer Supabase React platform, or a full stack developer React Firebase app. Projects without a plan cost 3x more to fix later.
🔷 A production-ready product, not a dressed-up prototype
As a Full Stack Developer React Node developer, I build advanced B2B products ready to go live immediately. Rapid delivery without cutting corners — clean code, testing, CI/CD, deployment pipelines — everything needed to stay live under real load.
🔷 Frontend and UI/UX users actually enjoy
As a react developer and web developer, I build fast, intuitive interfaces — CRM systems, dashboards, marketplaces with real-time updates, automation platforms, and SaaS products — as a full stack node.js react system where frontend and backend work as one. For API-driven products I work across react nodejs and react redux architectures.
🔷 Backend systems that don't break under pressure
Node js with Express, Django and Flask for Python-heavy workloads, Stripe, and cloud infrastructure — built with proper auth, business logic, and integrations. As a python full stack developer I handle data pipelines, automation, and react js applications where performance matters.
🔷 AI features that add real product value
As an AI-focused full stack engineer, I build AI-powered, AI-driven, AI-enhanced, and AI-focused features — agentic workflows, AI-assisted and AI-augmented interfaces, multi-agent systems with MCP, chatbot and chat experiences, and LLM integrations via OpenAI or Claude Code. If your SaaS needs to be AI-native, I know how to build that.
🔷 E-Commerce, CMS & broader stacks
As a Full Stack Developer React, Shopify specialist, and wordpress developer, I build storefronts and platforms that convert. I've also worked across laravel vue, mern, ruby on rails, react next node supabase react native, and .net full stack developer codebases — adapting to what you have instead of forcing a rewrite.
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MY APPROACH
1. Discovery first — I act as your architect and partner before writing a single line.
2. Architecture before code — a plan you approve. No black boxes.
3. Rapid, iterative delivery — real progress every week. I'm a fast builder who doesn't cut corners.
4. Honest communication — you hear about problems from me first.
5. Built to hand off — clean, advanced code your team can work with.
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SDA COMPANY
Behind this profile is SDA Company — a focused, senior software development team I founded. We're not hiring — we're selective. Over 5+ years we've helped clients raise funding, hit deadlines and scale to thousands of users. As CEO and lead specialist, I oversee every project directly. You get a founder with skin in the game, backed by a team that executes.
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💡 Have a product to build or a platform to fix? Send me a message - no pitch. Just a real conversation.
Stack: React / React.js, Next.js, Node.js, Python, Django, .NET, Laravel, Supabase, Firebase, PostgreSQL, MongoDB, Tailwind CSS, WordPress, MERN, GraphQL, Stripe, AWS, Docker,
Steps for completing your project
After purchasing the project, send requirements so Oleksandr can start the project.
Delivery time starts when Oleksandr receives requirements from you.
Oleksandr works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff & Access
Gather tech stack details, main concerns, and codebase access. Align on scope and priorities before starting.
Scope Definition
Review project structure, define what will be audited (frontend, backend, architecture, specific modules).