You will get Full Stack Developer | Authentication System | Firebase & Auth0 Integration
Rising Talent
Rising Talent
Project details
Authentication is the foundation of every secure web product — and getting it wrong is costly. I'll implement a robust, production-grade auth system for your SaaS or web app using Firebase, Auth0, or Supabase, so your users are protected from day one.
✅ Social Login & OAuth: Google, GitHub, Facebook, and other providers integrated quickly and securely — reducing sign-up friction and boosting user activation.
✅ Role-Based Access Control: Custom user roles and permissions so the right people always see the right content in your application.
✅ JWT & Session Management: Secure token handling, refresh logic, and session expiry that keep your app safe without sacrificing UX.
✅ Multi-Platform Auth: Works seamlessly across your React frontend and Node.js/Nest.js backend — fully connected end to end.
✅ Security Best Practices: Protection against common vulnerabilities, secure password flows, and audit-ready implementation.
I've integrated auth systems across 30+ products — from simple login flows to complex multi-tenant SaaS platforms. Let's make yours bulletproof.
✅ Social Login & OAuth: Google, GitHub, Facebook, and other providers integrated quickly and securely — reducing sign-up friction and boosting user activation.
✅ Role-Based Access Control: Custom user roles and permissions so the right people always see the right content in your application.
✅ JWT & Session Management: Secure token handling, refresh logic, and session expiry that keep your app safe without sacrificing UX.
✅ Multi-Platform Auth: Works seamlessly across your React frontend and Node.js/Nest.js backend — fully connected end to end.
✅ Security Best Practices: Protection against common vulnerabilities, secure password flows, and audit-ready implementation.
I've integrated auth systems across 30+ products — from simple login flows to complex multi-tenant SaaS platforms. Let's make yours bulletproof.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, PSD to HTML, Performance OptimizationWhat's included
| Service Tiers |
Starter
$50
|
Standard
$10,000
|
Advanced
$35,000
|
|---|---|---|---|
| Delivery Time | 1 day | 30 days | 70 days |
Number of Revisions | 0 | 1 | 2 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | ||
Source Code | - |
About Viktoriia
Full Stack Developer / React Node.js Developer / Wellness SaaS App
Lviv, Ukraine - 6:32 pm local time
🌿 I'm Victoria, and my core expertise is full stack web development that drives real business growth. Whether you need to build a high-performance SaaS platform from scratch or modernize an existing web product, I focus on creating scalable, intuitive, and maintainable solutions. My work has consistently helped businesses increase conversion rates by 35%+ and achieve measurable ROI from day one. Let's build something impactful together!
🌿 As a specialist in React and Node.js development, I bring deep expertise across the full stack from pixel-perfect frontends to robust, secure backends. I don't just write code; I craft high-performance web applications that feel seamless and scale with your business. If you're looking for someone to own your SaaS dashboard, CRM integration, or production-grade web app, I have the right tools and background to deliver.
🌿 I focus on React and Next.js on the frontend, paired with Node.js, Nest.js, and Express.js on the backend using TypeScript throughout to ensure your product is maintainable, scalable, and built to last. My goal is to bridge the gap between complex technology and an exceptional user experience, so your product stands out in a crowded market.
✔️ Building SaaS MVPs from scratch one helped a startup raise $2M+ in its seed round.
✔️ Delivering React-powered dashboards and web apps that boosted client conversion rates by 35%+.
✔️ Integrating complex third-party services Auth0, Firebase, Supabase, Twilio, AWS S3, and more.
✔️ Architecting backend systems with Node.js and Nest.js that cut server response times by 40%.
✔️ Designing user-centric web interfaces with Redux state management and smooth Lottie animations.
💻 Core Strengths & Technologies
React & Next.js: For fast, responsive, SEO-friendly frontends that users love.
Node.js, Nest.js & Express.js: Building secure, scalable APIs and backends that grow with your product.
Databases: MongoDB, PostgreSQL, MySQL optimized for performance with Redis caching.
Auth & Integrations: Firebase, Supabase, Auth0, Social Login, Twilio, WebRTC, Google Services, AWS S3.
DevOps: Docker, AWS (EC2, Lambda, S3), GitHub Actions CI/CD for reliable deployments.
🚀 MVP & Product Launch
From feature planning to production deployment, I ensure a smooth market entry through:
Clear milestones and rapid iterations for faster time to market.
Robust authentication and secure user management via Auth0, Firebase, or Supabase.
High-quality UI with React, Redux, and Lottie to increase retention and conversions.
⚙️ End-to-End Collaboration
I take full ownership of the web development lifecycle:
Architecture & Planning: Translating your vision into a scalable, future-proof technical roadmap.
Implementation: Prioritizing performance, clean code, and reliability at every layer.
Post-Launch Support: Continuous improvements, feature flags, and seamless updates.
🤝 Why Partner With Me?
Proven ROI: My work consistently delivers measurable growth higher conversions, faster load times, and scalable systems.
Speed & Reliability: 30+ launched products with 98% on-time, on-budget delivery.
Transparent Process: Clear communication and full visibility at every stage of your project.
💼 Platforms & Expertise
Web App Development • SaaS Platforms • CRM & Dashboard Solutions • API Integrations • B2B & B2C Products
Let's collaborate to bring your project to life!
Steps for completing your project
After purchasing the project, send requirements so Viktoriia can start the project.
Delivery time starts when Viktoriia receives requirements from you.
Viktoriia works on your project following the steps below.
Revisions may occur after the delivery date.
Review your app structure and authentication requirements
Select the right auth provider (Firebase, Auth0, or Supabase)