You will get a consultation for building your SaaS, Marketplace, Web3 or Crypto Exchange
Top Rated
Project details
I specialize in bridging the gap between complex vision and technical execution for SaaS, Marketplace, and Web3 founders. Whether you are launching a high-frequency Crypto Exchange or a scalable multi-tenant platform, I provide the architectural clarity and deep domain expertise needed to build correctly from day one. My approach focuses on creating lean MVP roadmaps that prioritize speed-to-market while eliminating future technical debt. This consultation serves as a professional gateway to a full Discovery Phase, where we define the exact specifications and rigorous calculations required for a precise development estimation.
Programming Languages
PHP, JavaScript, PythonCoding Expertise
Cross Browser & Device Compatibility, Localization, DesignWhat's included $5
These options are included with the project scope.
$5
- Delivery Time 2 days
- Number of Revisions 0
- Number of Pages 0
Optional add-ons
You can add these on the next page.
Getting the detailed estimation
(+ 3 Days)
+$10
14 reviews
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IG
Iryna G.
May 14, 2026
Web3 Developer for a decentralized platform with the swap & staking functionality
Really enjoyed working with Dima. He helped us develop the swap and staking features for our decentralized platform and was very reliable throughout the whole project. He communicates clearly, understands Web3 well, and delivers solid work without unnecessary back-and-forth. Would happily work with him again.
MI
Mariia I.
Apr 8, 2026
Full-stack (React.js + Node.js) Developer Needed for Fintech SaaS
Really glad we found Dima! 🎉
We brought him in to help maintain and improve our Fintech SaaS platform (React.js + Node.js) and he jumped right into the existing codebase with no issues. Fixed bugs, implemented new features, and kept everything stable - exactly what we needed.
Communication with Dima was smooth and consistent throughout, always kept us in the loop. And his English is great - clear, professional, easy to work with. No confusion, no back-and-forth.
Definitely planning to continue working together! 🙌
We brought him in to help maintain and improve our Fintech SaaS platform (React.js + Node.js) and he jumped right into the existing codebase with no issues. Fixed bugs, implemented new features, and kept everything stable - exactly what we needed.
Communication with Dima was smooth and consistent throughout, always kept us in the loop. And his English is great - clear, professional, easy to work with. No confusion, no back-and-forth.
Definitely planning to continue working together! 🙌
CF
Chris F.
Jan 30, 2025
Figma Designer Needed for SAAS Test Development Platform
LA
Lynx CX A.
Jul 22, 2024
Development of Crypto Exchange
We are grateful for the code's quality and advice in building our project. Thanks for the initial development. Good luck with your future projects We developed a cryptocurrency exchange with Peiko. Recommended to work with. Knowledgeable team and good communication.
CR
Carlos R.
Jul 9, 2024
Technical Advisor for Marketplace Development. CTO/Full Stack Developer/Senior Software Engineer
We are pleased we selected Dima and Peiko as our software development Advisor and partner. Dima and Peiko team beyond the great technical skills, their collaborative approach and project management make them a reliable tech partner!
About Dima
Crypto Exchange | SaaS | Marketplace | Full stack developer | Node.js
100%
Job Success
Kyiv, Ukraine - 8:12 pm local time
If you need a reliable React developer, Node.js backend developer, or mobile app developer who can take your idea from concept to launch, you’re in the right place.
🔸 100% Job Success 🔸 5.0 Review Rating 🔸 TOP 1% on Upwork 🔸 $600k+ Earned by Agency
🎯 Highlights of My Experience
1) Over 10 years of hands-on experience as a Full-Stack Developer and SaaS developer.
2) Delivered more than 200 projects, including 27 crypto exchange platforms, 35 multi-vendor marketplaces, 14 crypto wallets, and 43 SaaS apps.
3) Strong expertise in React, Node.js, JavaScript, and blockchain development for scalable applications.
4) Deep understanding of cryptocurrency, currency exchange systems, crypto wallets and marketplace ecosystems similar to Amazon.
5) Focused on clean architecture, performance, and clear communication.
⚙️What I Do
I design and develop SaaS platforms, marketplaces, crypto wallets and crypto exchanges that are modern, secure, and easy to manage. As a full-stack developer, I work with React on the frontend and Node.js or Laravel on the backend, connecting everything through strong APIs.
Here’s how I can help you:
1) SaaS development: building analytics dashboards, subscription systems, and cloud-based tools for your business.
2) Crypto exchange development: creating cryptocurrency and currency exchange apps with wallets, real-time trading, and admin dashboards.
3) Marketplace development: developing multi-vendor marketplaces with complex payment flows, order management, and seller portals.
4) Web development: crafting high-performing React and Next.js web apps optimized for speed and SEO.
5) Mobile app development: developing native and cross-platform apps with React Native that integrate seamlessly with your SaaS or crypto backend.
6) Blockchain development: implementing smart contracts, Web3 integrations, and secure wallet features.
7) Crypto wallet development: creating mobile wallet and digital wallet apps similar to Trust Wallet with blockchain integration, security layers, and user-friendly crypto-trader tools.
🧰 Tech Stack
1) Frontend: React, Next.js, Vue.js, Tailwind CSS, JavaScript
2) Backend: Node.js, Nest.js, Express.js, Laravel, PostgreSQL, MongoDB
3) Mobile: React Native, Flutter, Firebase
4) Blockchain: Ethereum, Binance Smart Chain, Solana, Solidity, Web3.js, Ethers.js
5) Cloud & DevOps: AWS, Docker, CI/CD, Google Cloud
Every product I build combines React performance, Node.js reliability, and blockchain security to support scalable crypto exchanges, wallets, and SaaS platforms.
🌟 Why Work With Me
1) 100% Job Success and 5.0★ client rating.
2) Over $100k earned through completed SaaS, marketplace, and crypto projects ( crypto exchanges and crypto wallets ).
3) Transparent communication and full project ownership.
4) I handle both frontend and backend development, including React, Node.js, and API integration.
5) Experienced blockchain developer for crypto exchange UI, mobile wallet, and digital wallet apps.
6) Proven record of building secure blockchain infrastructures trusted by crypto traders and businesses worldwide.
💡 Specializations
1) SaaS developer (dashboards, analytics, automation)
2) Full Stack Developer (React / Node.js / JavaScript)
3) Blockchain developer (smart contracts, wallets, DeFi)
4) Marketplace developer (multi-vendor systems, Amazon-style models)
5) Crypto exchange developer (secure currency exchange platforms)
6) Web developer and React developer (modern UI/UX and API-driven apps)
7) Mobile app developer (React Native, Flutter)
8) Backend developer (Node.js, Nest.js, Laravel)
9) Crypto wallet developer (mobile wallet, digital wallet, Trust Wallet-style apps)
If you’re looking for a Full-Stack Developer who can build your next SaaS, crypto exchange, or crypto wallet app with React, Node.js, and blockchain, let’s connect. I respond quickly and can help you turn your idea into a working product that users will love with my BDM skills.
💬 Message me today, and let’s start building something amazing.
Steps for completing your project
After purchasing the project, send requirements so Dima can start the project.
Delivery time starts when Dima receives requirements from you.
Dima works on your project following the steps below.
Revisions may occur after the delivery date.
Review&Analysis of your SaaS, Marketplace, web3 or crypto exchange startup
Once you provide your project details and materials, I conduct a preliminary review of your concept. I analyze your target niche (SaaS, Marketplace, or Crypto) to identify potential technical roadblocks or opportunities.
Post-Session Summary & Next Steps
I will provide a brief summary of our discussion and a clear "Next Steps" checklist. This includes a breakdown of what would be required for a Full Discovery Phase and how we can proceed with a Detailed Development Estimation.