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Termp Stripe Billing Integration and backend change to support it Add subscription billing so organizations are gated by pricing tier (Free, Solo, Team, LSP). One subscription per org. Current JWT auth is compatible — no auth changes needed. Stripe webhooks bypass auth and validate via signature. --- ### Definitions Billing unit is the organization. Each org gets one subscription. Plans: Free (default), Solo ($29/mo, $23/mo yearly), Team ($149/mo, $119/mo yearly), LSP (custom, sales-assisted). Limits enforcement uses segments as the countable unit (pricing page says "keys" but we count segments). Advanced seats = admin + project_manager + translator roles. Reviewer-only members are free. MT words counted at platform level before sending to provider. AI words and integrations are placeholder meters — include in schema but do not enforce until those features ship. Data preservation on downgrade: existing data stays accessible. Only new creation beyond the lower limit returns 402. --- ### Schema Changes Add to organizations table: stripe_customer_id (unique), stripe_subscription_id, stripe_price_id, plan (default 'free'), subscription_status (default 'free'), current_period_end, trial_ends_at. New usage_meters table: id, org_id (FK), period_start, period_end, mt_words_used (default 0), ai_words_used (default 0). Unique index on (org_id, period_start). Add env vars: STRIPE_SECRET_KEY, STRIPE_WEBHOOK_SECRET, price ID mappings per plan/interval. Store in AWS Secrets Manager, add to EC2 user-data fetch loop. --- ### Billing Service Create/get Stripe customer on org creation. Use unique constraint to prevent duplicates on race conditions. Checkout session creation: accepts org ID, price ID, success/cancel URLs, optional 14-day trial. Admin only. Portal session creation: returns Stripe Customer Portal URL for self-service management. Plan limits function returns per-tier caps: segments (500/5K/50K/unlimited), languages (3/10/unlimited/unlimited), projects (1/5/unlimited/unlimited), advanced seats (1/1/5/unlimited), MT words/month (10K/100K/1M/unlimited). Cancel subscription at period end (not immediate). --- ### Webhook Handler Register at /api/v1/webhooks/stripe without auth middleware. Use raw body + Stripe signature verification. Must be idempotent (check event ID to skip duplicates). Events: [login to view URL] (activate plan), [login to view URL] (sync plan/status/period), [login to view URL] (revert to free), invoice.payment_failed (set past_due), [login to view URL] (clear past_due). --- ### Plan Enforcement Add checks to existing routes. Return 402 with error, resource type, current usage, limit, plan, and upgrade flag. - Document upload/creation: count org-wide segments, block if exceeds plan - Project creation: count org projects, block at limit - Member addition: count advanced seats, block if new non-reviewer member exceeds limit - MT translation (single + batch): count source words, check against monthly MT limit, increment meter atomically on success - Project creation with new language pair: count distinct target languages across org Use atomic SQL increments for meters to handle concurrency. --- ### Frontend Billing settings page (admin only): current plan badge, usage bars (segments, MT words, seats vs limits), Manage Subscription button (opens Stripe Portal), Upgrade button (initiates checkout), period end date, trial days remaining. Pricing page: wire "Start 14-day trial" CTAs to checkout endpoint with trial. "Talk to sales" links to contact form. Global 402 handler: when API returns 402, show upgrade prompt with limit details and link to billing page. Trial banner in dashboard header when org is trialing, showing days remaining. Billing context follows org switcher (all billing calls include org ID from currentOrg store). --- ### Trial Flow All new orgs start on free. Stripe customer created automatically on org creation. No auto-trial. User clicks trial CTA, checkout creates subscription with 14-day trial. At expiry: payment method present converts to paid (Stripe default behavior); no payment method triggers [login to view URL] webhook which reverts to free. --- ### Edge Cases Org deletion: cancel active Stripe subscription immediately before database deletion. Stripe API outage: return 503 for checkout/portal calls but never block core features (editing, TM, QA). Plan limits read from local database, not Stripe API. Past-due grace: set status to past_due on payment failure but maintain access. Only revoke on [login to view URL] (Stripe exhausted retries). Webhook replay: return 200 without reprocessing if event already handled. --- ### Acceptance Criteria - Free org works within limits (500 segments, 3 languages, 1 project, 10K MT words) - Upgrade end-to-end: CTA, Stripe Checkout, webhook, plan updates, limits expand immediately - Downgrade: cancel via portal, runs until period end, reverts to free, existing data preserved, new creation blocked at 402 - MT metering tracks words per cycle, blocks at limit with 402 - Admin-only billing access - Idempotent webhooks handle duplicates and out-of-order events - Trial: 14-day, banner with countdown, auto-downgrade without payment, auto-convert with payment - Org deletion cancels subscription - Stripe failures never block translation work - Limits enforce on creation only, never retroactively restrict existing data
Project ID: 40638496
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278 freelancers are bidding on average $462 USD for this job

Hi — Elias here from Miami. I see you're looking to integrate Stripe Billing and overhaul your backend. The goal is clear: enhance your payment processing for subscription billing. What usually matters most here is ensuring seamless integration and managing user roles and permissions. A common issue in systems like this is handling billing cycles while maintaining data integrity. The tricky part is usually ensuring reliability and allowing for future expansion. My approach would involve structuring your backend for maintainability and scalability. I would implement a modular architecture that supports easy adjustments as your needs evolve. Focusing on performance and security during this overhaul will be crucial. I've worked on similar projects requiring payment gateway integrations and backend optimizations, so I understand the nuances involved. A few questions to better understand the scope: Q1 – What user roles will need different access levels for billing management? Q2 – Are there existing integrations or workflows to consider? Q3 – How do you foresee handling subscription changes or cancellations? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$500 USD in 3 days
8.6
8.6

Hi, this is a solid and clearly scoped Stripe billing integration project, and I can help implement it cleanly without disturbing your current JWT auth flow. I’ve gone through the org-based subscription model, webhook events, usage meters, 402 enforcement, trial logic, and billing UI requirements. The key here is getting the backend logic, idempotent webhook handling, and downgrade behavior right so billing never breaks core product usage. I can handle both the Stripe side and the required backend/frontend updates end to end.
$500 USD in 7 days
8.2
8.2

Hi there, We understand you need to integrate Stripe billing and overhaul your backend to support subscription-based pricing tiers for organizations, with features like trial periods, usage metering, and plan enforcement. Our team at Webbook Studio has experience with similar projects, such as building a WordPress e-commerce website for a fashion brand with custom payment integrations, and we're confident in our ability to deliver a high-quality solution using Node.js, JavaScript, and Stripe API. Can you tell us more about your current backend infrastructure and how you envision the Stripe integration fitting into your existing architecture? Feel free to message us to discuss the details! — Webbook Studio
$540 USD in 10 days
7.7
7.7

I will implement Stripe Billing integration by adjusting the database schema, securely managing sensitive data, and creating Stripe customers per organization. I will develop a webhook handler for secure event processing and ensure smooth plan enforcement. Additionally, I will create a user-friendly frontend for subscription management. I commit to delivering high-quality, maintainable code and providing ongoing support for scalability and performance optimization.
$675 USD in 5 days
7.3
7.3

Hello, You’re not just adding Stripe billing , you’re building a rules engine that protects org-level access without breaking core usage. I can implement the subscription flow, webhook processing, usage metering, and 402 enforcement so plan changes apply cleanly and existing data stays intact. I’ve handled Stripe integrations, Laravel/PHP backend changes, idempotent webhooks, atomic quota checks, and admin billing portals. I’ll wire customer creation, checkout, portal sessions, subscription sync, and the org-based limits for segments, seats, projects, languages, and MT words, with the meter tables and downgrade behavior you described. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. Should the webhook logic be built in Laravel routes/controllers, or do you already have a dedicated billing service layer to extend? Best regards, Asad
$250 USD in 10 days
7.5
7.5

Hello, Drawing from my over a decade of experience in web development, WellSpring Infotech is well-equipped to handle your project. We have extensive experience with JavaScript, Payment Processing, SaaS, and Web Development, all of which are directly relevant to your Stripe Integration and Backend Overhaul. From incorporating subscription billing for organizations to managing the different pricing tiers and the associated plans, I am familiar with all the components you listed. Our expertise in ecommerce extends to platforms like WordPress (including WooCommerce), Shopify, Magento, Wix, Odoo, Joomla, PrestaShop, and Squarespace. With this proficiency in a variety of technologies, we can redesign your backend system effectively while ensuring seamless integration with Stripe and an efficient handling of billing processes. At WellSpring Infotech, we don't only focus on completing projects on time; our goal is to create long-term successful solutions that cater to our clients' current and future needs. We value transparency in communication and offer continuous support even after project delivery—available whenever you need us. Let's work together towards strengthening your backend infrastructure for better billing management. Thank you
$750 USD in 10 days
7.4
7.4

Hi There I just read your project details regarding the Project: Stripe Integration & Backend Overhaul Can we do a quick chat right now so that we can discuss the project briefly? I have 10 years of experience in PHP, WordPress, Woocommerce, Cake Php, Codeigniter, Magento, Shopify, Laravel, Adobe Photoshop, Adobe Illustrator, CorelDRAW, Bootstrap, HTML, CSS, Angular, Javascript, jQuery, and My SQL. I appreciate Muhammad Rizwan Atif
$250 USD in 2 days
7.2
7.2

Hi There !! After reading your request, I found it to be rather intriguing. I can provide timely, high-quality assistance for your project as a senior full stack engineer. Let's talk further when we speak over the phone or chat. Awaiting for your positive response. Thanks christina
$250 USD in 7 days
7.3
7.3

Hi, I will start by adding subscription billing tiers (Free, Solo, Team, LSP) and integrating Stripe for payment processing. Schema changes will include organization table updates and a new usage_meters table. The billing service will handle Stripe customer creation, checkout and portal sessions, plan limits, and subscription cancellations. A webhook handler will be set up for Stripe events, and plan enforcement will be added to existing routes. The frontend will display billing settings, pricing, and trial information. Edge cases like org deletion and Stripe API outage will be addressed. Acceptance criteria will ensure functionality across all scenarios. Let's discuss this project further. Please start the chat. Regards, Sai Bhaskar
$350 USD in 10 days
6.8
6.8

Hello, I can help you with "Stripe Integration & Backend Overhaul" as per your given set of instructions. Please get in touch to discuss more in detail and start with the initial discusssion. I usually work in small milestones, keep the code organized, and provide regular updates so changes are easy to review. Let's discuss the current setup. I'll suggest the best implementation and an accurate timeline. ⭐ 5.0/5 from a recent client: "Project was delivered before Time with Best professional Knowledge One could ever held. Thanks for the support" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$563 USD in 8 days
6.9
6.9

Hello, I understand this is a SaaS billing and entitlement change, not simply a Stripe checkout integration. The critical part is making organization-level subscriptions, usage metering, limits, downgrades, trials, and webhook state synchronization reliable under concurrency and replay conditions. I would implement a dedicated Node.js billing service around Stripe, preserving the existing JWT authentication while keeping the webhook endpoint unauthenticated and protected by raw-body signature verification. I’ll add the organization billing fields, usage meters, idempotent event tracking, atomic MT-word increments, and centralized plan-limit enforcement so every protected route follows the same rules. Checkout, Customer Portal, trials, period-end cancellation, payment failures, and subscription lifecycle events will synchronize through verified, idempotent webhooks. Local database state will remain the source for authorization decisions, ensuring Stripe outages never interrupt core product functionality. I’ll also implement the 402 response contract and frontend billing context, usage indicators, upgrade flows, trial banner, and organization-aware billing controls. Downgrades will preserve existing data while restricting only new creation beyond the new limits. Best regards
$250 USD in 2 days
7.1
7.1

Hi, I've built Stripe subscription billing before, including checkout, customer portal, and webhook driven plan syncing on a live fundraising platform handling real payment volume. iSupportCause: fundraising platform with Stripe, PayPal, and Redis, over 700,000 supporters. One thing worth nailing down early: your MT word metering needs atomic increments under concurrency, so I'd handle it with a single UPDATE that checks the limit and increments in the same statement, returning 402 only when the limit is actually crossed. This avoids race conditions on batch translation. Same idea for the stripe_customer_id unique constraint on org creation. Quick question: are you on Postgres or MySQL? It changes how I write the atomic meter increment and the upsert on usage_meters. I'd suggest a first milestone on the schema and webhook handler so you release only on tested work. Adil
$411.96 USD in 7 days
6.8
6.8

Hi, I can help you to integreate stripe successfully for your project. Can we discuss over call? Best Regards Stefan
$750 USD in 7 days
7.0
7.0

Hello!-----------I AM AVAILABLE — I can integrate Stripe Billing into your existing backend with organization-level subscriptions, usage metering, trials, webhooks, and plan enforcement. Here is what I will do: • Add Stripe subscriptions, customers, checkout, portal, trials, and secure webhook handling. • Implement plan limits and atomic usage meters for segments, languages, seats, and MT words. • Add backend 402 enforcement while preserving existing data and access on downgrades. • Build the billing UI, usage tracking, upgrade flows, and test all Stripe edge cases end-to-end. Thanks!! Parminder
$555 USD in 5 days
7.1
7.1

Hi, I can help implement subscription billing based on your specifications, ensuring that current JWT authentication remains intact while managing webhooks securely. With over 9+ years of experience in Laravel and integrating payment gateways like Stripe, I can efficiently create the new data structures and subscription management features. I’ll ensure that limits enforcement is accurate and that downgrade data preservation is seamless. Additionally, I’m skilled in writing idempotent webhook handlers to avoid duplicate events, making this a smooth process. Let’s chat about your requirements further. I’m here to support you throughout this project! Best Regards, Priyanka
$500 USD in 7 days
6.7
6.7

Your current JWT auth will break under load if you're storing subscription state in the token instead of the database. Stripe webhooks can arrive out of order during high-traffic periods, causing plan downgrades to overwrite upgrades if you're not using idempotency keys and event timestamps. Quick questions - are you handling webhook retries with exponential backoff? And do you have a rollback strategy if a payment fails mid-billing cycle while users are actively creating segments? Here is the architectural approach: - STRIPE WEBHOOKS: Implement idempotent event processing using event IDs stored in a processed_events table to prevent duplicate plan changes during retry storms. - USAGE METERING: Use PostgreSQL row-level locks on usage_meters inserts to prevent race conditions when multiple MT translation requests hit simultaneously. - 402 ENFORCEMENT: Add middleware that queries plan limits once per request and caches in Redis with 60s TTL to avoid N+1 database hits on every segment creation check. I've built similar subscription systems for 2 SaaS platforms that scaled past 10K paying orgs without billing discrepancies. Let's schedule a 30-minute architecture review to map your webhook retry logic before you go live.
$450 USD in 10 days
7.2
7.2

With my extensive background in Node.js and JavaScript, I have the essential skills needed to execute this integration effectively. Additionally, I have significant experience working with Stripe, and I am confident in my ability to implement the billing changes seamlessly. My proficiency in Stripe webhooks will allow me to ensure the necessary authentication and signature validation are carried out effectively and efficiently. Beyond technical skills, I bring a degree of problem-solving acumen garnered from 8 years of web development experience that will be particularly beneficial for this project. If any issues arise during schema changes or data preservation processes on downgrades, my adeptness at debugging and troubleshooting will ensure smooth navigation of these challenges. Ultimately, what sets me apart is not just my skill set, but also my approach. I am reliable, detail-oriented, and known for my timely communication. This means you can trust me to attend faithfully to all the nitty-gritty details involved in the billing services and webhook handler while keeping you updated throughout the process. With me on board, you're getting more than a programmer; you're getting a dedicated collaborator committed to providing top-notch results.
$400 USD in 5 days
6.7
6.7

Hello, I can implement the Stripe Billing integration and backend overhaul for your organization-based SaaS architecture. I’ve reviewed the requirements carefully, including the one-subscription-per-organization model, existing JWT authentication, tier-based limits, usage metering, 14-day trials, webhook synchronization, and the requirement to preserve existing data during downgrades. I’ll keep the implementation modular so billing logic, plan limits, metering, Stripe communication, and route enforcement remain easy to test and maintain. I can also provide database migrations, environment/secrets configuration guidance, API changes, and a concise handover explaining the billing flow and deployment requirements. Most importantly, I’ll work against the acceptance criteria rather than treating this as simply a Stripe Checkout integration. The goal will be a complete end-to-end flow: Free → Trial → Paid → Upgrade/Downgrade → Metering → Enforcement → Cancellation, with existing organization data preserved throughout. I’m ready to review the existing Node.js codebase and begin implementation. Best regards ADEEL
$250 USD in 7 days
6.8
6.8

Hi there, I noticed your requirement for a Stripe integration with a robust backend overhaul. Given my experience with Node.js and payment processing, I can efficiently set up the necessary subscription billing features and ensure smooth integration with your existing system. The implementation would include addressing all outlined schema changes and handling the Stripe webhook events to maintain a seamless user experience. Your satisfaction is my priority and I guarantee that I will deliver you a high-quality result. Regards, Ali
$250 USD in 10 days
6.3
6.3

Hi, I can assist with the Stripe integration and backend overhaul for your org-based billing flow. I noted the important parts around one subscription per org, free-to-trial-to-paid handling, atomic MT meter updates, portal/checkout endpoints, and preserving data on downgrade while blocking only new creation with 402 responses. This needs careful implementation across database, API, webhook processing, and frontend messaging, and I can take care of that in a structured way. You’ll get a stable result rather than a rushed billing patch.
$500 USD in 7 days
6.5
6.5

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