Serhii Oberemchuk
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Offer work
Ukraine
9 hours 43 minutes back
available for hire
5 proposals made
age 41 years
on the service 2 years
Rating
Successful projects
Average rating
Language proficiency level
Українська: advanced
Italiano: intermediate
English: pre-intermediate
CV
Full Stack Web Developer focused on modern technologies and efficient solutions
My name is Serhii Oberemchuk. I’m a Full Stack Developer with experience building complete web applications — from design to backend.
🔧 Tech Stack:
Front-end: HTML, CSS, JavaScript, TypeScript, React, Next.js, Astro, Qwik, Svelte, Tailwind CSS, Framer Motion, Webflow, WordPress
Back-end: Node.js, Express.js, Nuts, MongoDB, Mongoose, Firebase, PostgreSQL (with Prisma)
DevOps & More: Vercel, Fly.io, Render, GitHub, Figma, API integrations (WayForPay, CMS platforms, etc.)
🧠 I’m constantly improving my skills and working on real-world projects, including:
Websites for psychological practices
CRM solutions for insurance agents
High-performance animated landing pages built with Next.js
📍 Since January 2024, I’ve been working with the team at Baza Trainee Ukraine, where I’m involved in full-cycle development.
💼 I take on projects of any complexity — from simple landing pages to complex multi-user systems.
🌍 My focus is on the European market (Italy, Ukraine) and international clients.
Skills and abilities
Programming
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Content Management Systems
from 11 USD for hour
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Desktop Apps
from 18 USD for hour
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HTML & CSS
from 11 USD for hour
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Javascript and Typescript
from 11 USD for hour
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Web Programming
from 18 USD for hour
Services
- Customer Support
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Online Stores & E-commerce
from 22 USD for hour
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Payment Systems Integration
from 18 USD for hour
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Website Development
from 334 USD for project
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Website Maintenance
from 89 USD for month
Portfolio
- All works 13
- Web Design 3
- Online Stores & E-commerce 2
- Website Development 2
- Web Programming 4
- HTML & CSS 2
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22 668 USD Obriym CRM — CRM + E-commerce Platform in One Workspace
Web Programming
Obriym CRM is a scalable SaaS platform that unites a B2B sales CRM and an e-commerce backend in a single role-aware workspace. Product tagline: “From first lead to loyal customer — every step managed.”
Project goal:
Build one tool where sales teams move deals through the pipeline (Lead → Qualified → Deal → Won → Customer → Retention) while online stores manage their catalog, orders, and payments — with no switching between systems.
…
Delivered functionality:
• 11 CRM modules: Dashboard & Analytics, Leads, Contacts, Companies, Deals & Pipeline, Activities & Tasks, Customers & Retention, Catalog & Products, and Orders (e-commerce).
• Kanban pipeline with drag-and-drop, stage validation, weighted forecast, win rate, and lost-reason analysis.
• Smart lead conversion — one click creates a Contact, Company, and Deal at once; stagnation detection surfaces stale deals and notifies the responsible manager.
• Customer analytics: health scoring, lifetime value, and churn-risk detection.
• E-commerce: workspace-scoped catalog with categories, brands, bundles, and inventory; orders with line items, a status workflow, and a public API.
Integrations and adapters:
WooCommerce, Shopify, Telegram, Viber, Nova Poshta, Ukrposhta, LiqPay, WayForPay, Monobank, Prom.ua, Rozetka, and OLX. Price/stock sync by SKU, idempotent order processing without duplicates, and payment sandbox validation.
Architecture and security:
OpenAPI 3.1 specification with an interactive request builder, a JS widget, a Lead intake API, and an Orders API. Rate limiting, honeypot anti-spam protection, and workspace isolation enforced on every request.
#CRM #Ecommerce #SaaS #API #WebApp #Integrations
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1700 USD On-Smart — Scalable E-commerce Platform for Smart Electronics
Online Stores & E-commerce
Modern e-commerce platform for smart electronics built with Next.js and TypeScript. Developed a custom admin dashboard for managing products, orders, payments and shipments. Integrated PayPal, Klarna and SumUp payment systems. Implemented SEO optimization, structured data, sitemap generation and advanced caching using Next.js Cache Components. Backend architecture built with Drizzle ORM and MySQL. Docker-based deployment configured on Aruba cloud hosting. #Nextjs #TypeScript #Ecommerce #SEO #Docker
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1500 USD Emmy & Lily Online Store
Online Stores & E-commerce
The online store Emmy & Lily is a dog care brand (natural shampoos, sprays, perfumes).
The website was created turnkey - from design to full integration with CRM, CMS, and payment system.
An adaptive interface, modern catalog, product pages with variants, a cart with order calculation, and a checkout form integrated with SalesDrive CRM have been implemented.
… Headless CMS DatoCMS was used for dynamic content management and Monobank for accepting online payments.
SEO optimization, SSR rendering, and high loading speed have been ensured.
Technologies: Next.js, TypeScript, Tailwind CSS, DatoCMS, SalesDrive API, Monobank API, Framer Motion.
#nextjs #ecommerce #salesdrive #datocms #monobank #fullstack #react #frontend #seo #onlinestore #turnkeywebsitecreation #tailwind #typescript #crm #javascript
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680 USD Portfolio website
Website Development
The portfolio website is created to showcase my skills as a web developer. The project was implemented from scratch: responsive layout, modern design, optimized structure, fast loading, and SEO preparation.
The main goal is to show clients an example of a clean, fast, and efficient website that can serve as a benchmark for the approach to turnkey project development.
… Technologies: Next.js, TypeScript, Tailwind CSS, Framer Motion. Key highlights: UX structure, performance, SEO optimization, integrations, animations, responsiveness.
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5000 USD Crypto Trading Simulator Platform Next.js
Web Programming
Development of a modern platform for cryptocurrency trading simulation with a real-time interface, analytics, and dashboard system.
Functionality:
#Nextjs #React #TypeScript #TradingPlatform #Crypto #Dashboard #WebApp #SaaS #Tailwind #Nodejs
…
• real-time market UI
• dashboard for users
• trading simulation system
• adaptive responsive design
• modern UI/UX architecture
• scalable frontend structure
• integration of chart/trading components
• high performance rendering
• mobile friendly interface
Technologies:
Next.js, TypeScript, React, TailwindCSS, modern component architecture, responsive UI, scalable frontend patterns.
The project is created as a foundation for a scalable trading/SaaS platform.
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567 USD Landing Buyer-Italy
Website Development
Buyer Italia — service for purchasing original clothing from Italy
Development of a landing page for a personal buyer service that helps clients buy original clothing from brands ZARA, Mango, COS, Massimo Dutti, Puma directly from Italian stores.
… The website features a presentation of the service, a description of the ordering and delivery process from Italy, informational pages about the brands and purchasing conditions, as well as integration with Telegram for receiving applications.
The project has a responsive design, multilingual support (UA / EN), and an SEO-optimized structure.
#landingpage #webdevelopment #frontend #nextjs #react #responsive #seo #uiux #website #freelanceproject
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680 USD Website for Synapse Wellness Center
Web Design
Project: Website for Synapse Wellness Center
Type: Landing page + multi-section website
Topic: Health, osteopathy, yoga, physiotherapy
Client: Wellness center located in Manila, Philippines
… Technologies: Next.js, Tailwind CSS, responsive layout, animations, UI/UX design
Project Overview:
We developed a complete website for Synapse, a wellness center that specializes in an integrated approach to health — from osteopathy and manual therapy to yoga and Pilates.
Website Structure:
Hero section with a bold, immersive call-to-action
Services section highlighting key offerings (Manual Medicine, Physical Therapy, etc.)
Meet the Team page introducing certified wellness experts
Membership Plans ranging from Basic to Diamond, each with unique benefits
Appointment booking and newsletter subscription forms
Fully responsive design, optimized for all devices
Key Objectives:
Build trust and clearly present expert team members
Make services easily discoverable and bookable
Deliver a modern, intuitive user experience
Visually reflect the brand's calm, caring, and holistic identity
Result:
A visually appealing and mobile-friendly website tailored to the aesthetic and values of a wellness brand. Carefully crafted UX ensures a smooth user journey and encourages conversions.
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567 USD ENG for UARMY
Web Programming
ENG for UARMY — an educational project website about learning military English
Project description:
ENG for UARMY — the first project in Ukraine for learning military English, created based on NATO standards (STANAG 6001). This website is designed to improve the language competence of servicemen and veterans, provide access to learning materials, news, and project opportunities.
… Key features:
Fully English-language interface
Sections: Home, Projects, Team, Contacts
Integration with social media (YouTube, Instagram, Facebook, Telegram)
Donation button "Help us grow"
Responsive layout
Features:
Bold modern design with military elements. Emphasis on readability, structure, and functionality.
#MilitaryProject #EducationalPlatform #NATOStandards #UIUX #ResponsiveWeb #FrontendDevelopment #VeteransSupport
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567 USD Peaceful Warrior
Web Design
Peaceful Warrior — charity foundation website
Project description:
The website is created to support Ukrainian defenders and collect humanitarian aid. The main goal is to provide users with a convenient platform to learn about the foundation's activities, find out how to help, and make an online donation.
… Key features:
Bilingual (Ukrainian / English)
Social media integration
Information structure: about the foundation, how to help, contacts
Support button with the option to make a contribution
Visual block with photo reports on activities
Features:
The website emphasizes trust through a concise design and a clear call to action. It is aimed at both Ukrainian users and an international audience.
#CharityWebsite #NonProfit #Multilingual #ResponsiveDesign #UIUX #FrontendDevelopment #SupportUkraine
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567 USD KOLYSKOVA SOUND
Web Design
KOLYSKOVA SOUND — interactive Ukrainian lullaby museum
Project description:
This is a multimedia web museum dedicated to the Ukrainian lullaby as part of intangible cultural heritage. The project is created to promote Ukrainian culture, preserve traditions, and pass them on to new generations.
… Key features:
Cultural identity: uses embroidery elements, traditional color schemes, and fonts
English version of the site for an international audience
Dark/light theme design
Responsive interface
Dynamic navigation between museum sections
Sections: "About us", "Lullaby Museum", user profile
Technologies:
The site is implemented with modern approaches to UI/UX design, intercultural communication, and inclusive access.
#NextJS #i18n #WebDesign #CulturalProject #Multilingual #ResponsiveDesign #UkrainianHeritage #FrontendDevelopment
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907 USD AI platform for creating resumes and cover letters
Web Programming
AI platform for creating resumes and cover letters
Development of a modern web application that allows users to quickly create a professional resume and cover letter using artificial intelligence.
Key features:
…
Content generation for resumes and cover letters based on entered data (AI powered)
Bilingual (English / Ukrainian)
Personal account with the ability to edit saved resumes
Intuitive editing interface with built-in styles and fonts
Content formatting for ATS (Applicant Tracking System)
Ability to choose colors and templates
Technical implementation:
Frontend built with modern JavaScript stack (React / Next.js). The architecture provides scalability, support for localization, and integration of external AI services.
#NextJS #React #TypeScript #AIResumeBuilder #Localization #MultilingualApp #UserDashboard #OpenAI #ATSfriendly #ResponsiveUI #FrontendDevelopment
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445 USD STATUS Advocate company
HTML & CSS
Website for the law firm "STATUS"
Development of a corporate website for a legal company that provides services in the fields of commercial, tax, contractual, and corporate law.
Key project tasks:
…
Creating a modern, restrained design that matches the image of the legal firm
Responsive layout for correct display on mobile devices
Information structure with clear navigation: about the company, services, team, publications, contacts
SEO optimization of basic meta tags for initial promotion
Implementation of a feedback form and the ability to schedule a consultation
About the company:
The law firm "STATUS" has been operating since 2016 and provides professional legal support for businesses at all stages: from signing agreements and registering intellectual property — to court defense.
#HTML #CSS #JavaScript #ResponsiveDesign #SEO #CorporateWebsite #LegalTech #Frontend #WebDevelopment #LegalWebsite #ResponsiveLayout #FeedbackForm #UXUI
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567 USD Roma Kitchen
HTML & CSS
Cucina Roma — is a unique Ukrainian-language project that introduces tourists to the real Rome through author-led excursions and gastronomic experiences.
The task was to create a website based on the provided design, which:
presents original tours;
offers culinary masterclasses with Neapolitan chefs;
… allows ordering a gift certificate;
conveys the atmosphere of Italian culture through style, photos, and content.
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