Vadim L.
Private message
Offer work
Kyiv,
Ukraine
available for hire
Rating
CV
Peiko — AI & Web3 Development Company for Scalable Digital Products
Peiko is a full-cycle software development company that has been helping startups, technology companies, and enterprise businesses build and scale complex digital products since 2017.
Our core areas of expertise are AI solutions and Web3 products. We also have extensive experience in developing SaaS platforms, FinTech systems, marketplaces, high-load web platforms, and mobile applications.
Over the years, we have successfully delivered 120+ projects for clients from the United States, Europe, and other international markets, including Tier 1 companies.
On Clutch, Peiko consistently ranks among the leading companies based on verified client reviews, organically placing in the Top 3 in our category and holding the #1 position in the Clutch Leader Matrix.
What Makes Us Different
We engage with projects at the idea stage and take responsibility for the entire product development lifecycle:
- Business idea analysis and requirements gathering
- Technical specification and product planning
- UX/UI design and prototyping
- System architecture design
- MVP development
- Full-scale product development
- Quality assurance and testing
- DevOps, CI/CD, and cloud infrastructure
- Product launch, support, and дальнейшее масштабирование
This approach allows our clients to work with more than just a development team—they gain a reliable technical partner focused on delivering measurable business results.
Core Expertise
AI Solutions
- AI integrations
- AI agents
- Chatbots and virtual assistants
- Business process automation
- LLM-based applications
Web3 & Blockchain
- Smart Contracts
- DeFi platforms
- Crypto Exchanges
- Tokenization
- Wallet integrations
Additional Expertise
- SaaS Platforms
- FinTech Solutions
- Marketplaces
- E-commerce Platforms
- CRM / ERP Systems
- Mobile Applications
Technology Stack
Frontend: React, Next.js, TypeScript
Backend: Node.js, Laravel, Symfony
AI: OpenAI API, LLM integrations, automation workflows
Blockchain: Solidity, Web3
Infrastructure: AWS, Docker, CI/CD
Databases: PostgreSQL, MySQL, MongoDB, Redis
Mobile: React Native, iOS, Android
Why Clients Choose Peiko
- Delivering software solutions since 2017
- 120+ successfully completed projects
- Top 3 in our category on Clutch
- #1 in the Clutch Leader Matrix
- Full-cycle product development from idea to scale
- Strong expertise in AI and Web3
- Experience working with Tier 1 clients
- Focus on long-term technical partnerships
Our Unique Value
Many companies simply write code based on an existing specification. We help clients shape the product itself—analyzing the business concept, designing the optimal architecture, identifying risks, and supporting the product through launch and growth.
This is especially valuable for startups and businesses that need not only developers, but an experienced technical partner who can guide the product from concept to market.
If you are looking for a team that can turn your idea into a scalable AI, Web3, or SaaS product, feel free to contact me.
We will perform an initial assessment, recommend the most effective implementation approach, and assemble a team that best fits your business goals.
Skills and abilities
Programming
-
AI & Machine Learning
from 23 USD for hour
-
Bot Development
from 23 USD for hour
-
Content Management Systems
from 23 USD for hour
-
Cryptocurrency & Blockchain
from 23 USD for hour
-
Data Parsing
from 23 USD for hour
-
Databases & SQL
from 23 USD for hour
-
Desktop Apps
from 23 USD for hour
-
Gaming Apps
from 23 USD for hour
-
HTML & CSS
from 23 USD for hour
-
Javascript and Typescript
from 23 USD for hour
-
PHP
from 23 USD for hour
-
Python
from 23 USD for hour
-
Testing & QA
from 23 USD for hour
-
Web Programming
from 23 USD for hour
Design & art
- AI Art
-
Interface Design (UI/UX)
from 23 USD for hour
Services
- AI Consulting
-
Online Stores & E-commerce
from 23 USD for hour
-
Payment Systems Integration
from 23 USD for hour
-
Website Development
from 23 USD for hour
-
Website Maintenance
from 23 USD for hour
Photo, Audio & Video
Mobile development
-
App Development for Android
from 23 USD for hour
-
Apps for iOS (iPhone and iPad)
from 23 USD for hour
- Hybrid Mobile Apps
Administration
Portfolio
- All works 76
- PHP 5
- Interface Design (UI/UX) 2
- Web Design 3
- Online Stores & E-commerce 7
- Website Development 15
- Web Programming 1
- Apps for iOS (iPhone and iPad) 2
- App Development for Android 1
- Payment Systems Integration 1
- Client Management & CRM 2
- Mobile Apps Design 3
- Cryptocurrency & Blockchain 31
- Hybrid Mobile Apps 1
-
SaaS RedLeo - management app | React | PHP | Node.js
Payment Systems Integration
Introducing a powerful web application designed to interact seamlessly with the Weavr API. This application offers advanced user and team management capabilities, allowing you to fully customize permissions to suit your specific needs. Whether you're managing a small team or a large organization, RedLeo application provides the flexibility and control you need to ensure smooth and efficient operations.
Skills and deliverables
#Node.js
… #web-программирование
#PHP
#React.js
#javascript
#payment
-
Crypto exchange | DeFi Ecosystem | Node.js | React | JavaScript
Cryptocurrency & Blockchain
Welcome to the next-generation Decentralized Finance (DeFi) Ecosystem, where innovation meets functionality in the vast realm of finance. With our state-of-the-art platform, you'll be introduced to an expansive suite of features, fine-tuned to cater to all your DeFi aspirations.
Core Features
… - Token Creation: Design, customize, and launch your unique crypto tokens. Whether it's for a community project or a new startup, our platform ensures a seamless creation process.
- Efficient Trading: Dive into a sophisticated trading environment! With advanced algorithms and a user-centric interface, maximize your profits and trade with confidence.
- Swift Swapping: Experience hassle-free token swaps with optimal slippage rates, connecting various tokens within the ecosystem. Swap, earn, and repeat!
- NFT Playground: Enter the world of Non-Fungible Tokens (NFTs)! Whether you're an artist, collector, or trader, our platform provides tools for minting, buying, and selling these unique digital masterpieces.
- And Much More!: Our ecosystem continually evolves, expanding its horizons with new, innovative features tailored to the demands and trends of the DeFi community.
-
Crypto exchange | Event marketplace | Laravel | JavaScript |
Website Development
Welcome to the Investor Exchange – the future of corporate communication and decision-making. Crafted with the expertise and precision of seasoned professionals, our platform redefines the conventional approach to Annual General Meetings (AGM).
Core Features:
… - Empowered Self-Service Portal: Designed for the modern Company Secretary and Investor Relations Officer, our portal offers intuitive tools for seamless management. With user-friendly dashboards and actionable insights, navigate the nuances of corporate administration effortlessly.
- Secure AGM Management: From scheduling to post-meeting analytics, handle every facet of your AGM with precision. Efficiently manage invites, attendees, agenda items, voting, and Q&A sessions.
- Private Network Video Streaming: Security meets efficiency! Stream your AGMs with pristine video quality, reaching vast audiences without compromising on privacy or quality. Our robust private network ensures buffer-free, secure transmissions even with massive concurrent viewership.
- Cutting-Edge Encryption: With the rise of cyber threats, the security of your communications and data is paramount. Our platform is fortified with industry-leading encryption technologies, ensuring your company's details and discussions remain strictly confidential.
- Integrated Communication Channels: Engage with stakeholders more interactively! Our platform integrates real-time chat, feedback collection, and Q&A segments for an enriched experience, fostering genuine conversations and collaborations.
-
Crypto wallet KYC: Token Management | React Native
Cryptocurrency & Blockchain
Introducing our flagship Mobile Custodial Wallet, a seamless blend of convenience, security, and efficiency tailored for the modern crypto enthusiast! Let's dive deeper into what sets this application apart in the crypto-verse:
Core features:
… - One-Stop Token Haven: Store an eclectic mix of tokens all under one digital roof! From mainstream favorites to emerging gems, our wallet supports a plethora of tokens ensuring you never miss out on a crypto opportunity.
- Swift Transfers & Exchanges: Seamlessly transfer tokens to friends, family, or business associates. Want to switch up your crypto portfolio? Dive into instant exchanges between different tokens without breaking a sweat.
- Unyielding Security: While our wallet offers custodial ease, we never compromise on security. With state-of-the-art encryption, multi-factor authentication, and regular audits, your assets are guarded like a fortress.
- KYC Integration - Know Your Customer, Know Your Security: We've seamlessly integrated a KYC process to ensure the platform's integrity and safety. This not only aligns with global regulatory standards but also adds an extra layer of trust and transparency for our users.
- User-Centric Design: Trade, transfer, and track with unparalleled ease! Our wallet's intuitive interface ensures that both crypto-novices and veterans can navigate and manage their assets effortlessly.
- Always On the Go: Designed with the dynamic lifestyles of our users in mind, our mobile-first approach ensures you have 24/7 access to your assets. Whether you're in a café, on a hike, or in a business meeting - your crypto wallet is always just a tap away.
-
Crypto exchange | web app | PancakeSwap | Solidity | React
Cryptocurrency & Blockchain
The idea of the project was to make a fork of PancakeSwap (pancakeswap.finance), but adjust the open-source code of PancakeSwap in accordance to client's designs.
We successfully did the auditing and further integration of client's own smart-contracts into the code that we took from PancakeSwap open source, and also we did all the necessary adjustments of the front-end part of the code (in React.js) to make them match the client's designs.
Skills and deliverables
…
Web Development
Web Application
Ethereum
Smart Contract
JavaScript
-
Crypto exchange Simpleex | Crypto wallet | Laravel | React
Cryptocurrency & Blockchain
A P2P exchange for buying and selling digital assets, where users can trade digital assets. Peiko implemented digital wallets to store USDT (TRC-20), and all transaction fees are sent to the customer's wallet. Peiko also implemented a platform where users can trade digital assets and an administrative panel that will allow you to manage this resource
Skills and deliverables
Web Development
… Node.js
Web Application
React
JavaScript
-
Marketplace for services | Multi-vendor | Laravel | React | Node
Website Development
Discover eBig5 - Your Dynamic Gateway to Diverse Services!
eBig5 is not just a platform, it’s a vibrant marketplace designed to bridge the gap between service seekers and providers across a spectrum of industries, including repairs, delivery, real estate, and entertainment. Open to individuals and entrepreneurs alike, eBig5 offers a world of opportunities for those looking to hire or offer services ranging from crafting and cleaning to freelancing and transportation.
… Join eBig5 today and experience the ultimate in service convenience and variety!
Skills and deliverables
Web Development
Laravel
Web Application
React
JavaScript
-
SaaS The Aviator - online casino game | Node.js | React | PHP
Cryptocurrency & Blockchain
The Aviator game is an online casino game themed around aviation. Peiko realized such features:
- Central interface for players to access the Aviator Game. - Visual elements and design that align with the aviation theme.
- Functionality to place bets on various aspects of the game.
- Real-time updating of bet information.
… - Comprehensive list of all bets placed in the Aviator Game.
- Personalized view displaying the betting history of the logged-in player.
- Display of top bets or winnings, creating a competitive and engaging environment.
Skills and deliverables
PHP
React
Node.js
JavaScript
Blockchain
-
SaaS alphaAI Capital | AI Development | Artificial Intelligence
Cryptocurrency & Blockchain
We had to create a secure, real-time trading product from scratch. We created a complex vision into a clear roadmap, and kept development agile enough to absorb regular startup pivots.
Completed tasks:
1. Design & build an AI-driven B2C SaaS for ETF trading from scratch
… 2. Integrate multiple third-party services (Alpaca, Elastic, Plaid, Mailchimp, SendGrid, PostHog)
3. Meet strict KYC / security / compliance requirements
4. Maintain startup-level agility - rapidly reprioritise features without derailing release cadence
5. Develop a modular architecture that can extend on the same code base
Skills and deliverables
AI Development
Artificial Intelligence
Python
Web Application
Web Development
https://youtu.be/lj0w2YL_QMQ
-
AI Voice app | AI Development | React Native | Node.js | AI-voice
Mobile Apps Design
The Client wanted to reduce customer service costs and improve speed by using AI. Our team turned this idea into an assistant, fully capable of handling voice calls - without human intervention.
It delivers natural, human-like conversations, integrates with popular tools, and supports flexible billing models.
… Main features:
1. Captures leads
2. Books appointments
3. Answers FAQs
4. Answers missed calls instantly
5. Manages appointments
6. Integrates with CRMs
7. Handles calls for both customers and staff.
Round-the-clock voice expertise that scales with your business - delivered
Skills and deliverables
AI Development
Artificial Intelligence
Mobile App Development
React Native
Node.js
-
SaaS Web app Peepex | P2P Crypto Exchange | Node.js & React
Cryptocurrency & Blockchain
We built Peepex, a SaaS P2P crypto exchange platform focused on fast trading, clean UX, and high performance. The goal was to deliver a scalable, real-time trading product capable of handling high transaction volumes while remaining flexible for future feature expansion.
The platform was developed end-to-end, covering architecture, backend services, real-time trading logic, and a responsive web interface. Special attention was paid to performance, security, and smooth user experience across trading flows
Skills and deliverables
…
Web Application
Web Development
Blockchain, NFT & Cryptocurrency
React
JavaScript
Completed tasks
Completed Tasks:
1) Designed and developed a SaaS P2P crypto exchange from scratch
2) Built real-time trading and order execution using WebSockets
3) Implemented wallet balance management, deposits, and withdrawals
4) Developed intuitive trading dashboards and user flows
5) Designed a scalable backend architecture for high-load scenarios
6) Optimized performance for fast order matching and live updates
7) Ensured security best practices for exchange-level functionality
-
SaaS Web app StudyBoo | EdTech Community | Node.js & React
Website Development
"Studyboo is a social network for students and future applicants choosing a university. It brings together students from universities across Europe and helps applicants make confident decisions using real student insights and peer support - even before enrollment.
The platform was developed end-to-end, covering architecture, backend services, real-time trading logic, and a responsive web interface. Special attention was paid to performance, security, and smooth user experience across trading flows.
Skills and deliverables
…
Web Application
Web Development
SaaS
React
JavaScript
Key Challenges
Our key challenge was to build a scalable and safe social platform that serves students from different countries while maintaining high content quality and engagement.
1) Built a comprehensive catalog of universities across Europe
2) Developed core social networking features for student interaction
3) Implemented a blog and content system for articles and announcements
4) Created a content self-moderation and censorship mechanism
5) Ensured smooth performance and scalability for a growing user base
6) Delivered an intuitive, user-friendly interface tailored to students"
-
Crypto exchange OrionProtocol - DeFi exchanger | React | Node.js
Cryptocurrency & Blockchain
The first gateway to the entire crypto market: aggregating every CEX, DEX, and swap pool into one decentralized platform The market cap of ORN is 314 000$
We also made a ERC-20 token which is listed on the Coinmarketcup now. The Orion Protocol was designed to aggregate the liquidity of multiple crypto exchanges into a decentralized platform that provides a singular, non-custodial gateway into the entire digital asset market. It was founded in 2018 and launched in 2020 by Alexey Koloskov in an attempt to solve some of the major issues of the decentralized finance (DeFi) space.
Skills and deliverables
…
Blockchain
Cryptocurrency
Ethereum
Smart Contract
JavaScript
The first gateway to the entire crypto market: aggregating every CEX, DEX, and swap pool into one decentralized platform. The market cap of ORN is 314 000$
We also made a ERC-20 token which is listed on the Coinmarketcup now. The Orion Protocol was designed to aggregate the liquidity of multiple crypto exchanges into a decentralized platform that provides a singular, non-custodial gateway into the entire digital asset market. It was founded in 2018 and launched in 2020 by Alexey Koloskov in an attempt to solve some of the major issues of the decentralized finance (DeFi) space.
Onion aims to solve the difficulties in performing profitable transactions associated with the lack of liquidity on the majority of crypto exchanges. This is the case for both centralized and decentralized exchanges. Orion’s solution to this is to aggregate exchanges’ order books into one simple to use and understand terminal.
The Orion Protocol’s goal is to help users get the best returns out of their investments while also lowering the risks associated with using multiple exchanges.
https://youtu.be/iLoSQbM4X60
-
65 000 USD Non-custodial crypto wallet
Cryptocurrency & Blockchain
Project under NDA. It is a mobile application - a non-custodial crypto wallet.
During the development of the project, the stack was used:
… Node.js, Nest, Docker, Swagger, Nownodes, Infura, Trongrid, BSCscan, Etherscan, ReactNative, Changelly API, Firebase
-
Crypto exchange | Quan2um - CEX | React | Node.js | Laravel
Cryptocurrency & Blockchain
Quan2um is a trusted cryptocurrency exchange where users can buy and sell popular listing coins. It has a high level of security that meets European standards.
The platform has a bonus system for new customers with a multi-level commission system. On the exchange, you can invest in your own Quan2um coin - BTCA, and receive passive income.
… The project was designed and developed by Peiko company from scratch in 8 months, and the team included up to 10 specialists in product development and testing.
Skills and deliverables
Crypto Exchange Platform
Web Development
Blockchain
Web Application
JavaScript
https://youtu.be/3F53xlRaFxg
#tradingview #node.js #blockchain
Reviews and compliments on completed projects 10
-
Real expert -
Craft master -
Quick answers -
First-class quality -
Nice communication -
High responsibility -
Great price -
Lightning fast
29 May
397 USD
Integration of new blockchains and raising additional nodes
Excellent work. All tasks were completed with high quality and in a short time. Communication was at a high level, Vadim was always in touch and promptly took wishes into account. I recommend for collaboration.
19 May
338 USD
Refinement and development of the cryptocurrency exchange
Vadim quickly understood the technical nuances, took into account all the wishes, and implemented the necessary functionality without unnecessary delays. The professional approach to security, system optimization, and attention to detail was especially appreciated.
Communication was at a high level: always in touch, transparent about stages and deadlines.
|
1 April
350 USD
A DevOps engineer is needed for a crypto/blockchain project.
Very satisfied with the collaboration. Vadim quickly understood the project, helped organize the infrastructure, and set up a stable deployment. He did everything neatly and without unnecessary questions, was constantly in touch, and offered good solutions. After his work, the system became significantly more stable. I recommend him for collaboration.
19 March
345 USD
Development of a smart contract
I worked with Vadim on the development of a smart contract — and honestly, I am pleasantly surprised. One of the main advantages was that Vadim was able to promptly take on the project — we were under tight deadlines, and this was very critical. It was immediately clear that he understands the subject: he explained without unnecessary fluff how to better organize the logic of the contract, suggested several solutions that I hadn't even thought of, and immediately warned about potential vulnerabilities. The code is clean, with comments, and he added documentation to everything — a small detail, but it greatly facilitated further work on the project.
I would also like to highlight the communication — he responded quickly, without disappearing or saying "I'll do it tomorrow." After the audit, he made corrections without any questions and on time.
10 March
361 USD
Development of a crypto-exchange, Stage 1
Thank you for the collaboration. The work was done with quality and even a bit faster than expected, all tasks were implemented according to the specifications. Vadim was always in touch and responded quickly to comments. I am satisfied with the result, we plan to work on the next stages.
27 February
284 USD
Development of the technical specification for the crypto project
I want to thank you for the quality work done in preparing the technical assignment for the crypto exchange. All requirements were thoroughly worked out, the structure of the document is logical and clear, and many important nuances that we hadn't even considered at the start were timely taken into account.
I would like to highlight the deep immersion in the business logic of the project, proactivity in asking the right questions, and suggestions for optimal solutions from the perspective of implementation and scaling.
Communication was quick and comfortable, all corrections were made promptly. We are completely satisfied with the result; the technical assignment significantly simplified the planning of development and interaction with the team.
We plan to work on the next stages. I recommend collaborating with you as a responsible and competent specialist.
20 December 2022
113 USD
The exchange processor
We needed to fix some errors in our project, as well as to develop an additional functional. Wade and his team did everything pretty quickly and quality, for us this is an indicator of high professionalism. We are pleased to work together, we will continue to work on the development of our platform.
Thank you for work! Everything is done quickly and well!
27 March 2020
613 USD
Разработка бизнес процессов для маркетплейса
Поставленная задача была выполнена. Подход к работе понравился, будем сотрудничать над следующим этапом
24 March 2020
514 USD
Описание функционала сервиса знакомств
Поставленная задача была выполнена качественно, работой с Вадимом и его командой довольны. Во время работы со связи не пропадали и уделяли должное внимание всем деталям нашего проекта
27 December 2019
295 USD
Личный кабинет поставщика
Вадим, проявил экспертизу при описании функционала Личного кабинета будущего маркетплейса. Хороший подход к решению поставленной задачи и визуализации процессов!
В рабочем процессе Вадим и его команда оказались ответственными и коммуникабельными, перед стартом работы, были заданы правильные вопросы при обсуждении моего проекта. Детали, которые мы обсудили и deadline который зафиксировали перед началом работы, выполнен успешно!
Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
|---|---|---|---|---|---|
|
Freelance project |
|||||
|
Freelance project |
|||||
|
Freelance project |
|||||
|
Freelance project
113 USD
|
|||||
|
Freelance project |
|||||
|
Freelance project |
|||||
|
Freelance project |
|||||
|
Freelance project |
|||||
|
Freelance project
564 USD
|
|||||
|
Freelance project
338 USD
|