You will get Estimate for MVP/SaaS project Node.js | React | Express | AI integration
Top Rated
Project details
PLEASE DO NOT ORDER BEFORE HAVING A DISCUSSION.
With us YOU will get a professional technical estimate directly from an experienced CTO and his engineering team. We specialize in full-stack development using React, Node.js, TypeScript, PHP, Python, and AWS, helping startups and enterprises turn complex ideas into reliable, scalable products.
You’ll receive a detailed project evaluation based on real engineering logic, not guesses. We’ll break down your scope, highlight technical risks, propose architecture options, and give you realistic delivery timelines and cost estimates.
Our clients appreciate our clarity, speed, and high-quality execution. Expect productive collaboration, transparent communication, and a team that treats your product like their own.
Whether you’re building a SaaS platform, MVP, marketplace, or enterprise solution, we’ll help you plan it right from day one.
Thanks,
Sergey Koval
CTO at Rezet team
With us YOU will get a professional technical estimate directly from an experienced CTO and his engineering team. We specialize in full-stack development using React, Node.js, TypeScript, PHP, Python, and AWS, helping startups and enterprises turn complex ideas into reliable, scalable products.
You’ll receive a detailed project evaluation based on real engineering logic, not guesses. We’ll break down your scope, highlight technical risks, propose architecture options, and give you realistic delivery timelines and cost estimates.
Our clients appreciate our clarity, speed, and high-quality execution. Expect productive collaboration, transparent communication, and a team that treats your product like their own.
Whether you’re building a SaaS platform, MVP, marketplace, or enterprise solution, we’ll help you plan it right from day one.
Thanks,
Sergey Koval
CTO at Rezet team
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Security, DesignWhat's included
| Service Tiers |
Starter
$500
|
Standard
$750
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 2 | 3 | 5 |
Design Customization | |||
Content Upload | - | - | - |
Responsive Design | - | ||
Source Code |
23 reviews
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SD
Shelomo D.
Oct 25, 2024
Full Stack Developer
Working with Sergey has been a great experience. His commitment and professional attitude ensure that every project is done well and on time. Sergey consistently provides clear and organized ideas, which improve our teamwork and lead to excellent outcomes. His skill in aligning with our goals makes him an essential partner. I highly recommend Sergey and can't wait to collaborate with him again.
SD
Shelomo D.
Jan 11, 2023
Fullstack Developer
Sergey has shown excellent technical skills and a solid understanding of software development principles. Their coding is clean and well-organized, with a focus on maintainability and scalability. He works well in a team, and are able to effectively communicate and collaborate with other team members. He has also shown a strong ability to learn new technologies and adapt to changing requirements.
YB
Yonatan B.
May 31, 2021
Full Stack | React & Node.js
Sergey is an absolute asset. Dedicated, communicative and highly professional developer. It was a pleasure working with him for so long. We hope to extend our work in future projects. We highly recommend Sergey as a full stack developer.
YB
Yonatan B.
Nov 30, 2020
Full Stack Needed | React & Node.js
Sergey has proved himself to be one of the best developers we ever worked with. Communication is great, execution is stellar and the quality of work is amazing. Would highly recommend hiring him for complex projects. Looking forward to our next project!
RS
Ruslan S.
Nov 2, 2020
Senior JavaScript Developer
Sergey is a responsible and professional developer who moved us to the next level in terms of code quality and architecture, thank you!
About Serhii
Senior Full Stack Engineer | Node.js, Next.js, Laravel | AI Apps
100%
Job Success
Zaporizhzhya, Ukraine - 10:05 pm local time
Have a complex product idea?
I launch high-performing web applications and scalable SaaS platforms without missing deadlines.
I am a Senior Full Stack Developer with 12 years of experience.
My focus is robust backend architecture, deep API flows, and clean business logic.
What I do best:
• Backend Engineering: Build high-load Node.js apps, modular NestJS layers, and clean Laravel systems.
• Modern Frontend: Create production-ready user interfaces using React, Next.js, TypeScript, and Redux logic.
• AI & Integrations: Integrate OpenAI, Anthropic Claude, and LLM features into production business workflows.
• Cloud Infrastructure: Deploy scalable architecture on AWS, using PostgreSQL, MySQL, and heavy Redis caching.
📊 My Achievements in Numbers
• AI-powered SaaS Product: Shipped a working assistant in 6 weeks from an empty repository. Reduced onboarding time by 70%.
• B2B Analytics Platform: Acted as Lead Engineer to build a 500K+ document database pipeline. Doubled user retention rates.
• Fintech SaaS Infrastructure: Migrated legacy Node.js to NestJS, cutting cloud infrastructure costs by 40%. Zero post-launch bugs.
My code follows strict SOLID, DRY, and KISS engineering standards.
This ensures your product scales fast without needing costly architectural rewrites.
Ready to jump in and start building your MVP or scaling enterprise infrastructure.
Send a message or hit Invite to schedule a quick introduction chat.
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.
You complete the project following the steps.
We will analyze your details, specification, business logic and prepare a detailed estimate according to your needs. You can also expect for 1 round of revision to fine-tune the final result.