Senior Full-Stack SaaS Engineer Required

@diektech

Hi — Elias here from Miami. I see you're looking for a senior full-stack engineer to enhance your SaaS platform with technologies like React and Supabase. It’s crucial to develop a system that not only meets your current needs but also scales effectively as your user base grows. What usually matters most here is ensuring the architecture can handle future integrations and user roles seamlessly. A common issue in systems like this is managing permissions while maintaining a smooth user experience. The tricky part is usually the automation logic, especially when dealing with payments through Stripe and data handling with Brevo. I focus on building a solid foundation that prioritizes stability and maintainability. Structuring the application with modular components will aid in easier updates and expansion down the line. My experience with similar projects has taught me the importance of thoughtful API design and effective data management. A few questions to better understand the scope: Q1 – What specific user roles and permissions are you looking to implement? Q2 – Are there any particular integrations with third-party services you anticipate needing? Q3 – What are your scaling expectations over the next 6-12 months? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.

@Hubready

Hello!, This is James from Hollywood... I read your Senior Full-Stack SaaS Engineer project carefully, and I understand you need someone who can build a solid SaaS flow around Lovable, React, Supabase, AI, Stripe, and Brevo, not just “make it work,” but make it reliable, clean, and ready to scale. I’ve spent about 15 years working with full-stack systems, PostgreSQL, REST APIs, frontend development, and production SaaS builds. I also bring a strong product mindset, so I focus on the business goal too: smooth onboarding, clear user journeys, stable payments, and automation that saves time. My approach would be simple and practical: 1. Review the current scope and confirm the core user flow 2. Lock the data model, auth, and Stripe/Brevo integration plan 3. Build the frontend and backend in testable phases 4. Check edge cases, performance, and deployment readiness Relevant work includes a SaaS dashboard for ops automation, a subscription app with Stripe billing and email workflows, a React/Supabase client management tool, and an AI-assisted lead processing platform. Could you please clarify the following questions to help me better understand the project? 1. Is Lovable already generating part of the app, or should I build the full architecture around it? 2. Do you need Stripe for subscriptions only, or also trials, coupons, and failed-payment recovery? 3.

@corpmember29

Hello, I would implement secure tenant isolation by assigning every record a tenant_id and enforcing Supabase Row Level Security (RLS) policies that allow authenticated users to access only data matching their tenant. User roles and permissions would be managed through JWT claims and RBAC, with all database operations protected by RLS policies to ensure complete isolation across organizations. 1:- User Portal Secure Authentication Organization Management Employee & Client Management AI Document Analysis Document Storage PDF & Letter Generation Workflow Automation Billing & Subscriptions Reports & Dashboard Profile & Settings 2:- Admin Panel Dashboard Tenant Management User & Role Management (RBAC) Organization Management Document Management AI & Workflow Management Stripe & Billing Email Automation (Brevo) Reports & Audit Logs API & Integrations Settings & Security More I am available on desk as per your convenient time zone and will work on your project until you satisfied with my work. Thanks Christina

@OutsourceMan

Drawing upon my experience as the head of a premier web and app development firm for over 18 years, I confidently affirm my capacity to comprehensively handle your project initialed; refactor an existing multi-tenant enterprise SaaS platform. My journey in the field has allowed me to solidify my skills in ReactJS, TypeScript, Supabase, Stripe,and SaaS engineering in general. As such, I guarantee to deliver proficient solutions that meet your needs within the stipulated timeframe. . Get in touch so we can discuss further about realising the potential of your enterprise SaaS platform together!

@denisSolution

Hi, I'd implement secure tenant isolation using Supabase RLS by defining policies on each table that enforce ownership through a tenant_id column, ensuring queries can only access data belonging to the authenticated user's tenant. I’ve built a similar multi-tenant SaaS platform with React, Node.js, and Supabase where we enforced strict RLS policies early, though we had to refine a few edge cases around shared resources like templates. I’d keep the architecture modular with separate backend services for billing, AI, and document handling, while relying on Supabase’s built-in auth and RLS for tenant isolation. The biggest win will be validating all RLS policies with automated tests to prevent data leaks during future changes. I’ll review the existing codebase carefully, document any gaps in RLS enforcement, and ensure the Lovable frontend integrates cleanly with the backend without breaking the current flow. The goal is a stable, production-ready platform that’s easy to maintain and scales with your needs. If we’re aligned, I can start right now. Thanks, Denis

@teodorgeorge

Hello, Secure tenant isolation in Supabase RLS should store tenant_id on shared tables and enforce policies that compare it with authenticated user membership claims. I have worked on React and TypeScript SaaS platforms with organization dashboards, role permissions, document flows, and PostgreSQL data models. I can review the Phase 1 Lovable frontend, handle the Frontend Development needed, and complete Supabase Auth, Storage, RLS, and REST API logic without rebuilding the UI. I will add Stripe subscriptions, Brevo emails, AI document analysis, PDF generation, audit logs, testing, and production cleanup. I can share relevant SaaS code or portfolio links and provide a timeline after reviewing the README and current scope. Best regards, Teo

@naminghn

Hi there, I understand that secure tenant isolation in a multi-tenant SaaS application using Supabase Row Level Security (RLS) involves defining row-level policies that allow only the relevant tenant's data to be accessed based on the user's role or ownership. By implementing RLS, I would ensure that every query is filtered according to the tenant’s unique identifier, protecting sensitive information and ensuring compliance with security standards. With extensive experience in building enterprise-level SaaS applications, and solid proficiency in React, TypeScript, and Supabase, I am well-equipped to carry on with your existing codebase. I can ensure the successful completion of the platform, including Stripe and Brevo integrations, and the implementation of secure practices as described. Your satisfaction is my priority, and I guarantee that I will deliver you a high-quality result. Regards, Ali

@gotucat

Hi, I reviewed the project and the main requirement is to deliver a production-ready, multi-tenant SaaS platform built on Lovable, React, Supabase, Stripe, and AI features. For secure tenant isolation, I would implement Supabase Row Level Security (RLS) by tagging every row with tenant_id, creating policies that restrict access to data per authenticated user’s tenant, and injecting the tenant context at the API boundary and within Postgres functions. This approach keeps tenants isolated while maintaining performance and auditability. I’ll align the Lovable-generated React/TypeScript frontend with the Supabase backend, complete APIs and business logic, and enforce secure authentication and RBAC for multi-tenant data. I’ll integrate Stripe for subscriptions, Brevo for emails, and use GitHub for code hosting, delivering clean, maintainable code. Quality and maintainability drive my work. Let’s discuss here now.

@rizwange4

With my extensive background in building AI-powered software systems and cutting-edge technologies like React, TypeScript, Supabase, Stripe, and Github, I am confident that I am the ideal Senior Full-Stack SaaS Engineer for your existing enterprise SaaS platform. Given that this project is not a fresh start but rather an enhancement to an already developed infrastructure, I bring on board the necessary expertise to fully comprehend the existing codebase and continue development effectively. My proficiency in working with Lovable-generated React applications further positions me as a suitable fit for your requirements. When it comes to delivering scalable, secure and maintainable solutions with long-term value, which aligns precisely with your expectations – you can count on me. With my deep understanding of cloud infrastructure optimization and DevOps processes, the project will be prepared for smooth production deployment. To cap it off, scheduling has always been an important aspect of my project management process thus delivering within estimations won't be a concern.I'm the perfect match to consolidate your Phase 1 build and lead your enterprise SaaS platform to full-fledged fruition. Together, we'll ensure that every feature continues hitting all benchmarks as we employ methodologies specific to what best serves your objectives.

@a4logic

Hello, As a skilled and experienced team at Our Software, we are well-positioned to take your existing SaaS project to the finish line. We've worked on scalable, enterprise SaaS applications utilizing technologies like Lovable, React, TypeScript and Supabase which makes us an ideal fit for your needs. And just because "SaaS" is in my portfolio doesn't mean I can't handle frontend, I assure you, React and TypeScript skills has been key in our long list of successes. Specifically, our experience with Supabase and implementing multi-tenant SaaS applications aligns seamlessly with your project's requirements. We’ve successfully implemented Supabase Row Level Security (RLS), integrated numerous payment gateways including Stripe and Brevo, and have even incorporated AI-powered features like OpenAI or Anthropic in previous projects. Moreover, our excellent understanding of Git repositories will ensure clean version control and transparency throughout the project. Given you have provided a comprehensive checklist of things you need done throughout this engagement in addition to your strict no redesi Thanks!

@CorporateRD

Good day! First of all, let me answer your question: How would you implement secure tenant isolation using Supabase Row Level Security (RLS) in a multi-tenant SaaS application? We would structure all tenant-based tables with an organization_id and map users through a secure membership table. Supabase RLS policies would ensure users can only access data belonging to their authorized organization, combined with role-based permissions and backend validation for additional security. Before starting any contract, we are happy to provide a free initial technical review and implementation approach. Based on your requirements, I understand that you’re looking to continue and complete an existing enterprise SaaS platform built with Lovable, React, TypeScript, Supabase, Stripe, Brevo, and AI integrations. We have experience building SaaS platforms with React, Supabase, PostgreSQL, Stripe, AI APIs, and RBAC systems. We can review the existing codebase, continue development without rebuilding, and deliver a secure, scalable production-ready solution. Questions: Could you share the current codebase and documentation for review? Which modules are completed and which are pending? What AI workflows are required in the first release? Are Stripe plans and billing rules already finalized? What user roles and permissions are required? I would love to schedule a brief call to review the platform and define the completion roadmap. Royal Designs! Budget and timeline are placeholders.

@Hammadhassan21

Hey, I’ve carefully reviewed your project, and I understand you need an experienced engineer to continue an existing enterprise SaaS build rather than restart it. For secure tenant isolation, I would implement Supabase Row Level Security (RLS) by linking authenticated users to organisation records, applying policies based on tenant IDs, and ensuring every database query is restricted through validated user context. I can help complete the React/TypeScript platform with Supabase integration, multi-tenant architecture, RBAC, Stripe subscriptions, Brevo workflows, AI-powered features, document management, and production optimisation while preserving your existing codebase and architecture. My focus is on delivering a secure, scalable SaaS product ready for real users. I have hands-on experience with full-stack SaaS applications and would be happy to share relevant examples during our discussion. One quick question: is the current Phase 1 build already connected to Supabase with the database schema and RLS policies in place, or should I complete that foundation first? Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best Regards, Hammad Hassan

@abdulhamidh2

Hello I just read your project about completing an existing multi-tenant SaaS platform using Lovable, React, Supabase, and AI integrations. Your focus on secure tenant isolation with Supabase Row Level Security (RLS) caught my attention. To implement this, I would define tenant-specific policies in PostgreSQL that restrict data access based on authenticated user’s tenant ID, ensuring strict data separation without code duplication. I have extensive experience building production SaaS applications with React and TypeScript, integrating Supabase for authentication, storage, and RLS. I’ve implemented Stripe billing and Brevo email workflows in enterprise platforms, plus OpenAI-powered automation features. I’m confident I can take ownership of your existing codebase to deliver a secure, scalable solution quickly. Could you share the current timeline and any critical features you want prioritized? Best regards, AbdulHamid

@azwa04

Hello, Your project aligns well with my experience building scalable web applications, AI integrations, REST APIs, authentication systems, and modern React-based platforms. I'm comfortable working with an existing codebase, understanding the current architecture, and extending it rather than rebuilding from scratch. Milestones Milestone 1 Codebase review Supabase & authentication audit Backend integration Architecture validation Milestone 2 Multi-tenant features RBAC & RLS implementation Stripe & Brevo integration AI features & business logic Milestone 3 PDF/document generation Testing & bug fixes Performance optimization Production deployment & handover Timeline: 2–3 weeks depending on the remaining Phase 1 scope. My experience includes React, TypeScript, Supabase, PostgreSQL, REST APIs, Stripe, OpenAI integrations, workflow automation, and enterprise dashboards. I write clean, maintainable code, follow Git workflows, and prioritize security, scalability, and long-term maintainability.

@toriquldev123

Hello Dear! Greetings from Toriqul Global Solutions! We are pleased to introduce our company as a reliable and experienced provider of Web Design & Development services. Founded and led by Engineer Toriqul Islam, a B.Sc. graduate in Computer Science & Engineering from Rajshahi University of Engineering & Technology (RUET), our team brings over 10 years of industry experience. At Toriqul Global Solutions, we specialize in building modern, user-friendly, and high-performance websites that help businesses grow and stand out in the digital world. Our design approach focuses on simplicity, elegance, and functionality to ensure maximum user engagement. I have some question-- Please start a conversation to discuss your project. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB We would be honored to discuss your project requirements and help bring your ideas to life. Thank you for your time and consideration. Warm Regards, Toriqul Global Solutions

@tobiask5

Hi, Secure tenant isolation starts by assigning every record a tenant_id, enabling RLS on all tenant-owned tables, and enforcing policies that only allow access where the authenticated user's tenant_id matches the record. I pair this with RBAC, secure server-side functions for privileged actions, and proper indexing to ensure both security and performance. I'm an independent full-stack developer with 12+ years of experience building production SaaS applications using React, TypeScript, Supabase, PostgreSQL, Stripe, REST APIs, and AI integrations. I'm comfortable taking ownership of existing codebases, including Lovable-generated React projects, and extending them without unnecessary rewrites. My experience includes Supabase Auth, RLS, multi-tenant architecture, Stripe subscriptions, Brevo transactional emails, OpenAI/Anthropic integrations, and GitHub-based workflows. I'll review your Phase 1 build and documentation, complete the remaining backend logic, integrations, testing, and prepare the platform for production. I can start immediately and estimate 8–12 weeks after reviewing the existing codebase. Best regards, Tobias

@emilesd617

Hi, I am a full-stack SaaS developer with 8 years of rich experience in software development, with a background in . I am familiar with React, TypeScript, Supabase, PostgreSQL, REST APIs, Stripe, GitHub, OpenAI, Anthropic, SaaS architecture, and secure authentication systems. For this project, I would implement secure tenant isolation using Supabase Row Level Security (RLS) by designing proper tenant-based database policies, linking users with organizations through secure relationships, and ensuring every query is automatically scoped to the authenticated user's tenant. I can continue your existing Lovable React codebase, complete Supabase backend integration, implement SaaS features, billing, AI workflows, and prepare the platform for production. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.

@megauravpanwar

I would implement tenant isolation by making the organisation the primary boundary for every tenant-owned record, enforcing access through Supabase Row Level Security policies tied to the authenticated user’s organisation membership and assigned role. Every read, insert, update, and delete would be checked at database level—not only in the React application—so users can access only records belonging to their own organisation. Sensitive administrative actions would use tightly controlled server-side operations, with audit logging throughout. Hi, My delivery plan would be: 1. Review the existing build, specifications, data structure, and current progress; identify gaps, risks, and the exact completion roadmap. 2. Connect and complete the frontend-to-backend flow while preserving the completed UI/UX. 3. Finalise secure multi-tenant organisation, employee, and client management, including role-based permissions and tenant-level data isolation. I am comfortable working with React and TypeScript codebases, modern API integrations, secure authentication, Stripe-based billing, AI integrations, and maintainable enterprise application architecture. I will keep progress transparent and raise any architectural concerns early, rather than allowing them to become late-stage issues. I’m ready to review the existing Phase 1 build and provide a focused completion plan. Best regards

@shawanay

I have worked on scalable SaaS applications involving secure data models, third-party integrations, and maintainable architectures. I can assist with: - Completing Supabase backend, APIs, authentication, storage, and RLS security. - Extending the existing Lovable React frontend. - Building multi-tenant workflows, dashboards, and management modules. - Integrating Stripe billing, Brevo emails, and OpenAI/Anthropic AI features. - Implementing document workflows, testing, optimization, and deployment preparation. Quick question: Is your current Phase 1 build already connected to Supabase, or does the backend implementation still need to be completed? Regards, Shawana.