Rebuild a multi-tenant SaaS gift-voucher platform — TypeScript / Next.js / Supabase — production-ready, QA included

@opencollar

Hi, I see your platform needs a strong rebuild that can handle multiple tenants smoothly and keep data safe. I will set up the multi-tenant structure so each business stays separate, and role permissions are clear. For the online sales, I will create a branded iframe page that shows multiple vouchers and a simple basket, making it easy for customers to buy. The payment process will be hosted, verifying payments via webhook before issuing vouchers, ensuring secure and accurate transactions. I will also develop APIs for POS systems to check balances, sell, or redeem vouchers, with safeguards to prevent over-redemption and duplicate transactions. The voucher ledger will record every change, making reconciliation straightforward, and expiry policies will be flexible but compliant with Irish law. For email notifications, I will design templates that you can customize, and the system will retry failed emails automatically. Search and detailed views will be fast and informative, with CSV import and comprehensive reports. API key management will be simple and secure, with clear tracking. Throughout, I’ll keep communication transparent, deliver quality work, and support you after launch to help your business grow. Let’s discuss your ideas and plan to create something bigger together. Regards, Nick.

@rahuliitm69

Hi there, I have my own team and we have recently delivered a SaaS-based multi-tenant platform for managing banking IT assets, which I can show privately as it is currently running on the client’s testing environment. I have reviewed the entire Phase 1 scope including multi-tenancy, voucher sales, payments, ledger management, APIs, redemptions, reporting, imports, and security. For a project of this scale, we prefer fixed-price milestone-based delivery aligned with acceptance criteria. For the calendar, we understand speed is important and can prioritize a pilot-ready release first, followed by phased rollout. For concurrency and over-redemption protection, we will use a ledger-based approach with database transactions, row-level locking, and idempotent processing to ensure balances remain accurate even under concurrent requests. For testing, our approach will be test-driven throughout development where each module, covering payments, webhooks, redemptions, tenant isolation, imports, reporting, and API workflows from the start rather than being added later. We also feel this tech fit very well for a scalable multi-tenant SaaS platform. For the team size, price, timeline, and milestone structure, we can share a detailed document after clarifying a few questions. That document will include finalized scope, architecture, database design, API strategy, testing plan, migration approach, team allocation, delivery timeline, and commercial proposal. Thanks, Rahul A.

@kamran2012

Hey, I will deliver your multi-tenant gift-voucher platform — tenant-isolated schema with RLS, append-only voucher ledger, webhook-verified issuance, and the full redemption/reporting suite — production-ready with tests written per module. For over-redemption safety, I will use a SELECT … FOR UPDATE row lock on the voucher balance row inside a transaction, compare the ledger-reconstructed balance before writing the debit entry. This guarantees rejection under concurrent partial redemptions without relying on application-level checks alone. Webhook idempotency follows the same pattern — a unique constraint on the provider event ID ensures duplicate deliveries are safely ignored. Send me a message and we can go over the details. Best regards, Kamran

@DeveloperStation

Hi there, We’ve built similar multi-tenant platforms with complex payment workflows, including server-side webhook verification and multiple payment providers. We also have extensive experience with automated testing, ensuring that critical features like payment verification and concurrent request handling are thoroughly validated. With a strong foundation in both front-end and back-end development, I can deliver a fully integrated solution that meets your needs. I’m also adaptable and can bring in specialized resources for specific tasks, such as UI design or DevOps, at no extra cost. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best, Adil

@larrylbrown3rd

✋ Hi - I'm Larry from Atlanta. I would build this as a production SaaS platform, not a prototype. My similar project involved a financial-style transaction ledger where balances had to be fast to read but always reconstructable from immutable transactions, with strict idempotency and reconciliation rules. https://www.freelancer.com/portfolio-items/11384459-ai-stock-analysis-saas-platform Concurrency and webhook safety For over-redemption, I will use database transactions, row-level locking, ledger writes, and balance checks inside the same atomic operation. For payment webhooks, I will store provider event IDs, internal payment state, and idempotency keys so duplicate or delayed Paynt callbacks never issue duplicate vouchers. Testing discipline Automated tests will cover verified-payment-only issuing, duplicate webhook handling, concurrent over-redemption rejection, API-sale idempotency, RLS tenant isolation, cancellation blocking redemption, import approval, and ledger-to-report reconciliation. Let's build a secure voucher platform together. I am open to chatting at any time and can start immediately. Thank you, Larry

@ciss26

Hello, I hope you are doing well. I understand that you are looking to build a MULTI-TENANT SAAS BASED GIFT VOUCHER PLATFORM, and I would be happy to help. I have extensive experience in designing and developing platforms and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.

@edwarddzi8f

Hi there, I can help you rebuild this gift-voucher platform. I've built multi-tenant SaaS systems before, including ledger-based financial apps with strict concurrency controls. For over-redemption safety, I'd use PostgreSQL row-level locks within serializable transactions and test it with concurrent requests in the test suite. Webhook idempotency is handled via a unique idempotency key column with a unique constraint, so duplicate webhooks simply fail gracefully. I'd write tests alongside each module as you've specified. I'm Edward, a solo developer with 10+ years building production systems. I can start immediately. Happy to chat more.

@Hrolgar

PgBouncer runs in transaction mode by default on Supabase's managed instances, which means SET LOCAL statements including row_security don't persist across connections in the pool. For a multi-tenant build where RLS is the isolation boundary between tenants, that's a configuration decision that needs to be resolved at project start, not discovered in production. The redemption path has a separate constraint: concurrent redemption attempts against the same voucher code need serializable isolation or SELECT FOR UPDATE at the database level. Application-layer checks alone won't prevent double-spend under concurrent load. Five milestones: M1: Tenant schema, RLS policies, pooler config, auth + session layer. 1,700 EUR, 7d. M2: Voucher issuance engine + idempotent redemption (SELECT FOR UPDATE, idempotency key table, expiry handling). 2,000 EUR, 7d. M3: Multi-tenant admin UI (tenant management, voucher inventory, redemption audit log). 1,800 EUR, 7d. M4: Customer-facing storefront (purchase flow, redemption UI, email dispatch). 1,800 EUR, 7d. M5: QA suite (Playwright E2E, RLS penetration tests, load test on redemption path), staging-to-prod migration tooling. 1,200 EUR, 7d. Total: 8,500 EUR, 35 days. What's your current Supabase plan? The connection limit changes the pooler recommendation for M1.

@marcosfermin

Howdy! I've read through your specification carefully, and this is exactly the kind of project I want to be working on right now. A ledger-first, multi-tenant voucher platform with real concurrency constraints, webhook idempotency requirements, and a clean modern stack is a well-scoped, technically interesting build, and the fact that you've thought through the hard parts already (RLS as defence-in-depth, statutory expiry floors, idempotent financial operations) tells me this will be a productive engagement. Let me address each of your eight points directly. --- RELEVANT EXPERIENCE Multi-tenant SaaS is my primary domain. I've designed and built platforms where tenant isolation is enforced at the database layer, not just the application layer, including RLS policies in PostgreSQL that remain enforced even when application-level auth is bypassed, exactly the defence-in-depth model you've described. Thank you. Marcos.

@wpexpert0141

Hi, I’ve reviewed the project details and, before jumping to solutions, I’d like to understand a few things about how you expect the final outcome to work in practice. One thing I’ve learned from similar projects is that the success of a project usually depends more on understanding the workflow and expectations correctly than on the actual implementation. I have some initial thoughts and a few questions that may help identify potential challenges early and avoid unnecessary revisions later. If you're available for a quick discussion, I'd be happy to share them. Looking forward to hearing more about your project Shiv,

@Jennycreation

With 15+ years of comprehensive experience in web and software development, my team and I are well-equipped to tackle the challenge of rebuilding your multi-tenant SaaS gift-voucher platform. Our expertise in ASP.NET and SQL Server will ensure that your platform is robust, efficient, and secure. We're capable of providing not just the functionality you need but also automated tests alongside each module, a critical aspect often overlooked. One of our strengths lies in creating scalable platforms tailored to specific business needs, and your project's well-defined scope aligns perfectly with our approach. We understand the importance of a concise and streamlined platform and will deliver a production-ready solution on time and within budget. Our previous work with financial systems requiring strict verification processes means we have the necessary know-how to implement your hosted payment flow effectively while adhering to necessary security measures. Importantly, our skills extend beyond development - we can also provide full documentation, reporting and maintenance even after project completion. Trust us with transforming your existing voucher system into an efficient multi-tenant SaaS platform. Let's work together towards boosting your business efficiencies!