You will get a secure B2B client portal MVP with status tracking and documents
Rising Talent
Project details
I build secure B2B client portal MVPs for startups that need customers to log in, see current status, access documents, and complete one defined workflow. Common uses include project, case, application, order, and onboarding tracking.
Starter turns the idea into a build-ready portal blueprint. Standard delivers a client-and-admin MVP with authentication, record ownership, status tracking, document access, responsive UI, tests, and deployment. Advanced adds a third role, supporting modules, notifications, audit history, operational checks, and launch handoff.
I work with Next.js, React, TypeScript, NestJS or Node.js, PostgreSQL, and object storage. You receive maintainable source code, staging verification, and documentation.
Each order covers one business portal with counted roles, screens, record types, statuses, and environments. It does not include custom product design from scratch, native mobile apps, marketplaces, real-time chat, subscription billing, AI features, enterprise SSO, large data migration, unlimited storage, penetration testing, compliance certification, or third-party fees. Please message me before ordering Standard or Advanced.
Starter turns the idea into a build-ready portal blueprint. Standard delivers a client-and-admin MVP with authentication, record ownership, status tracking, document access, responsive UI, tests, and deployment. Advanced adds a third role, supporting modules, notifications, audit history, operational checks, and launch handoff.
I work with Next.js, React, TypeScript, NestJS or Node.js, PostgreSQL, and object storage. You receive maintainable source code, staging verification, and documentation.
Each order covers one business portal with counted roles, screens, record types, statuses, and environments. It does not include custom product design from scratch, native mobile apps, marketplaces, real-time chat, subscription billing, AI features, enterprise SSO, large data migration, unlimited storage, penetration testing, compliance certification, or third-party fees. Please message me before ordering Standard or Advanced.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$450
|
Standard
$2,500
|
Advanced
$5,000
|
|---|---|---|---|
| Delivery Time | 4 days | 18 days | 30 days |
Number of Revisions | 1 | 2 | 2 |
Design Customization | - | ||
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$200 - $1,200
One additional screen
(+ 2 Days)
+$250
One additional role
(+ 2 Days)
+$350
Two email notification events
(+ 2 Days)
+$300Frequently asked questions
3 reviews
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WM
William M.
Jul 21, 2026
Fix a Small TypeScript Issue in a Next.js Component
Very professional work; all fixes were made very quickly
SL
San L.
Mar 19, 2025
Coding Front-End SaaS
I had the pleasure of working with Vasyl P. on a frontend project, and I couldn’t be more satisfied with the results. He delivered high-quality, well-structured, and responsive code, ensuring a seamless user experience.
Communication was excellent throughout the project—Vasyl P. was always responsive, proactive, and open to feedback. He not only met all the requirements but also suggested valuable improvements that enhanced the final product.
If you’re looking for a skilled, reliable, and detail-oriented frontend developer, I highly recommend Vasyl. I would definitely work with him again in the future!
Communication was excellent throughout the project—Vasyl P. was always responsive, proactive, and open to feedback. He not only met all the requirements but also suggested valuable improvements that enhanced the final product.
If you’re looking for a skilled, reliable, and detail-oriented frontend developer, I highly recommend Vasyl. I would definitely work with him again in the future!
SL
San L.
Nov 8, 2024
Coding Front-End SaaS
Great experience working with Vasyl! He delivered high-quality code on time, communicated effectively, and showed excellent technical skills. Highly recommended for anyone in need of a reliable programmer!
About Vasyl
Senior Full Stack Developer React Next.js NestJS | AI SaaS Developer
100%
Job Success
Chernivtsi, Ukraine - 8:24 am local time
🏆 12+ years in JavaScript and TypeScript development
✅ 45+ web and mobile products delivered
✅ Full-cycle SaaS development from architecture to deployment
✅ Experience with EdTech, eCommerce, CRM, marketplaces, payments, AI SaaS, and mobile apps
2,600+ completed orders and 520+ registered customers supported through an eCommerce and CRM platform built with Next.js, React, Node.js, and TypeScript.
90% faster order processing and up to 80% less manual work through workflow automation, API integrations, and React admin dashboard improvements.
10+ React Native applications delivered for iOS and Android with authentication, payments, notifications, API integrations, and production releases.
✅ SENIOR FULL STACK DEVELOPER SERVICES
As a Senior Full Stack Developer, I build new SaaS MVPs, join existing teams, rescue unfinished applications, fix production bugs, add features, refactor legacy code, and prepare AI-generated applications for launch.
As a Next.js Developer, I build SaaS applications, dashboards, admin panels, customer portals, marketplaces, SSR applications, and responsive interfaces using Next.js App Router, React, TypeScript, Tailwind CSS, TanStack Query, Zustand, Redux, and React Hook Form.
As a NestJS Developer and Node.js Developer, I build REST APIs, authentication, RBAC, multi-tenant SaaS architecture, background jobs, WebSocket features, payment systems, file processing, automation, and secure backend services.
As a React Developer, I create reusable components, forms, tables, dashboards, responsive layouts, and maintainable frontend architecture.
As a React Native Developer, I develop iOS and Android applications with APIs, authentication, subscriptions, push notifications, analytics, and store deployment.
✅ SAAS DEVELOPMENT
I work on SaaS MVP development, Full Stack SaaS development, B2B SaaS platforms, multi-tenant SaaS applications, AI SaaS products, EdTech SaaS platforms, fintech applications, eCommerce systems, CRM platforms, booking products, marketplaces, admin panels, and internal tools.
I take SaaS products from architecture and database design through frontend, backend, testing, deployment, scaling, and support.
✅ AI DEVELOPMENT AND AI INTEGRATIONS
As an AI Developer and AI SaaS Developer, I integrate OpenAI API, Claude API, LLM features, AI chatbots, AI content generation, document processing, PDF processing, classification, structured outputs, prompt engineering, automated workflows, and AI usage tracking.
I also fix and complete AI-generated web applications created with Cursor, Claude Code, ChatGPT, Lovable, Bolt, or similar AI development tools.
I can audit an AI-generated codebase, fix TypeScript errors, repair frontend and backend logic, complete missing features, remove duplicated code, secure APIs, optimize performance, connect databases, integrate third-party APIs, and prepare the application for production deployment.
✅ STRIPE AND PAYMENT DEVELOPMENT
As a Stripe Developer, I implement Stripe Checkout, Stripe subscriptions, recurring billing, Payment Intents, Stripe Connect, customer portals, pricing plans, trials, invoices, webhooks, and subscription lifecycle management.
I fix failed Stripe webhooks, broken checkout flows, incorrect subscription states, duplicate payments, and database synchronization problems.
✅ BUG FIXING AND EXISTING APPLICATIONS
I provide Next.js bug fixing, React bug fixing, TypeScript error fixing, NestJS API development, Node.js backend development, Vercel deployment fixes, production bug fixing, performance optimization, Prisma and MongoDB fixes, PostgreSQL query optimization, authentication fixes, feature development, code refactoring, legacy codebase stabilization, and AI-generated app completion.
I preserve existing behavior where required, understand the business logic before changing code, and avoid quick fixes that create new technical debt.
✅ TECHNOLOGY STACK
Frontend: Next.js, React, React Native, TypeScript, Tailwind CSS, Redux, Zustand, TanStack Query, React Hook Form.
Backend: NestJS, Node.js, Express.js, REST API, WebSocket, Prisma ORM, PostgreSQL, MongoDB, MySQL, Firebase.
AI and Payments: OpenAI API, Claude API, AI agents, LLM integrations, Stripe, third-party APIs, PDF and file processing.
DevOps: AWS, Vercel, Ubuntu, Nginx, PM2, GitHub Actions, CI/CD, production deployment.
You can hire me as a Senior Full Stack Developer, Next.js Developer, NestJS Developer, React Developer, Node.js Developer, TypeScript Developer, SaaS Developer, AI Developer, Stripe Developer, or React Native Developer.
Send me your requirements, repository, technical problem, or unfinished AI-generated application. I will help you build, fix, complete, launch, or scale it
Steps for completing your project
After purchasing the project, send requirements so Vasyl can start the project.
Delivery time starts when Vasyl receives requirements from you.
Vasyl works on your project following the steps below.
Revisions may occur after the delivery date.
Portal contract and workflow map
I confirm the target client, primary record, roles, permissions, screens, status lifecycle, data model, document rules, acceptance tests, and package boundaries.
Authentication, data, and access control
For implementation packages, I create the approved schema and authentication flow, then enforce role, ownership, and document permissions at the server or data boundary.