Backend development support connecting a web application’s API to Stripe for usage-based billing. Scope includes configuring API authentication, setting up Stripe checkout for paid access tiers, and testing the payment-to-access flow

We are seeking a US-based computer vision and full stack developer to build a platform for sports card recognition. The project includes developing subscription management, dashboards, and user account features. The ideal candidate will have experience creating scalable applications and integrating computer vision capabilities into a user-friendly platform. Hiring: Computer Vision + Full Stack Developer for Sports Card Live Auction Overlay App (SaaS) 📌 Overview I’ve built an MVP of a real-time sports trading card scanning and comping overlay tool using Loveable.dev. The product helps buyers gain an edge during live auctions by instantly identifying cards and showing real-time market comps. Now I’m looking for a U.S.-based developer (or strong US-aligned freelancer) to take this from MVP → production SaaS. This is a subscription-based product, so I need someone who can help build something fast, accurate, scalable, and hard to replicate. 🧠 What the product does Users can: Capture or upload sports trading card images during live auctions (mobile + desktop) Instantly identify: Player Year / set Parallel / serial number Pull live market comps Display a real-time “buy / avoid / fair price” overlay The goal is speed + accuracy in live buying situations (seconds matter). ⚙️ What I already have MVP built in Loveable.dev Basic overlay + UI flow Initial comp logic concept Subscription idea (not yet fully implemented) 🛠️ What I need help building (Phase 1 → Scale) I’m looking for someone to help rebuild and harden the system into a real SaaS product: 1. Computer Vision / OCR Layer Card detection from images (mobile + desktop) OCR extraction (player name, set, serial numbers) Image recognition / matching to known cards Confidence scoring (very important — must avoid wrong matches) 2. Comp Engine (Core Value) Integrate or build system for: eBay sold listings 130point or similar comp sources Card Ladder / ALT-style pricing logic Return: last sale average comp trend direction liquidity estimate 3. Real-Time Overlay System Lightweight overlay that works during live auctions Low latency (fast lookup is critical) Works on mobile + desktop workflows 4. SaaS Infrastructure User accounts + authentication Subscription billing (Stripe) Usage tracking / rate limiting Admin dashboard 5. Scaling / Production Hardening API architecture improvements Database structure Performance optimization for real-time use Error handling for imperfect images 💡 Ideal candidate You should have experience with: Computer vision (OpenCV, YOLO, or similar) OCR pipelines AI image classification or similarity matching Full-stack SaaS development Stripe subscriptions API design (Node.js / Python / Next.js preferred) Huge plus if you have: Sports card / collectibles knowledge Experience with marketplaces or scraping pricing data Real-time / low-latency systems 🎯 Why this is interesting This is not a generic app. It’s: A real-time decision engine for high-value collectibles Built for a passionate, high-spend niche (sports cards) Subscription-based with strong monetization potential Designed for speed advantage in live auctions 📍 Requirements Must be U.S.-based (preferred for communication/time zone alignment) Must be able to work independently Must have strong GitHub/code examples Bonus if you’ve built AI or vision-based SaaS tools before 💰 Budget Open to: Hourly or fixed project 📩 To apply, please include: Relevant CV / GitHub Past AI / computer vision projects Any SaaS or startup experience Your approach to building a real-time image → comp system Availability per week

Title: Stripe Subscription Expert Needed to Audit & Fix Recurring Billing for Monthly, 3-Month, 6-Month & 12-Month Plans Description: We are a fast-growing U.S.-based telehealth company looking for an experienced Stripe subscriptions and recurring billing expert to audit, troubleshoot, and optimize our subscription infrastructure. We currently offer subscription plans with different billing cadences and need an expert who can identify issues, improve reliability, and provide advanced reporting on rebills, churn, and retention. Current Environment Stripe Subscriptions Multiple subscription plans: Monthly 3-Month 6-Month 12-Month Auto-renewing recurring subscriptions Thousands of active and future recurring payments High-volume customer base Subscription lifecycle includes upgrades, cancellations, failed payments, rebills, and retention tracking What We Need Fixed Subscription Audit Review current Stripe subscription setup Identify why certain recurring payments are failing or not rebilling properly Audit subscription products, prices, schedules, and billing logic Review customer payment method storage Investigate Link, ACH, and card payment behaviors Rebilling Optimization Ensure reliable rebills across all plan types Configure best practices for: Monthly plans 3-month plans 6-month plans 12-month plans Prevent missed renewals Improve payment recovery Failed Payment Recovery Optimize dunning management Setup automated retry schedules Improve failed payment recovery rates Reduce involuntary churn Analytics & Reporting We want visibility into: Active subscribers Monthly recurring revenue (MRR) Churn rate Rebill success rate Failed payment rate Customer lifetime value (LTV) Retention cohorts Upcoming renewals Subscription cancellations Revenue forecasting Dashboard Creation Build executive dashboards showing: Daily rebills Weekly rebills Monthly rebills Upcoming subscription renewals Churn trends Retention trends Revenue projections Required Experience Please apply only if you have experience with: Stripe Billing Stripe Subscriptions Stripe Revenue Recognition (preferred) Subscription businesses SaaS or telehealth platforms Subscription analytics Churn reduction Payment recovery systems Customer retention metrics Deliverables Full Stripe account audit Written report of findings Recommendations for improvements Implementation of approved fixes Subscription analytics dashboard Documentation of all changes made Training session with our team To Apply Please answer the following: How many Stripe subscription projects have you worked on? Have you worked with telehealth or healthcare companies before? What subscription billing issues have you solved? What tools do you recommend for subscription analytics (Chargebee, ProfitWell, Baremetrics, Stripe Sigma, etc.)? Share examples of dashboards or subscription reporting you've built. What would your first 48 hours of investigation look like? Project Type: Contract → Potential Long-Term Relationship Budget: Open (please provide fixed-price and hourly estimates) Preferred: Senior-level Stripe specialists who have managed subscription businesses processing significant monthly volume.

Core Architectural Workflow 1. Client Intake & Data Collection The customer visits the Porkbun-hosted website and completes a secure, multi-step intake form. The form dynamically captures customer details, the specified number of signers, and handles secure multi-file document uploads. 2. Asynchronous API Triggering Blue Notary API: The website backend instantly delivers an API payload to Blue Notary to establish the live signing session container, pushing the customer data and uploaded document streams directly into the digital meeting room. QuickBooks Online API: Simultaneously, the backend contacts QuickBooks to check for an existing client record or generate a new Customer Profile. 3. Credit Card Tokenization (Vaulting) To maintain absolute data security and avoid PCI-compliance liabilities, the developer will embed the QuickBooks Web Payments SDK directly into the booking page. When the client clicks "Book," the secure iframe captures and tokenizes the credit card information with QuickBooks Payments, returning a secure payment token (paymentMethodToken). The website backend securely maps this token to the customer profile for later use; no actual credit card numbers are ever stored on our servers. 4. Post-Session Admin Portal & Dynamic Billing Because RON platforms track identity verification but do not consistently pass live, rolling digital stamp/seal counts to external billing systems in real time, the developer will construct a secure, password-protected administrative interface on our domain (e.g., /admin/billing). Upon logging out of a completed Blue Notary session, the admin opens this dashboard, selects the client, and types in the Actual Signers and Actual Seals Placed. Automated Billing Logic Formula Upon submitting the administrative form, the server executes the programmatic pricing formula: Total Invoice = Base Session Fee + (Additional Signers × Signer Rate) + (Additional Seals × Seal Rate) The backend automatically executes these final steps via the QuickBooks API: Generates a professional line-item invoice reflecting the base fee and exact volume variables. Commands QuickBooks Payments to immediately process the charge using the vaulted credit card token. Locks in the clean processing rate (e.g., flat 2.99% invoiced rate) with zero added per-transaction service fees or third-party overhead. Triggers the automated delivery of the official QuickBooks paid receipt directly to the client's inbox. Developer Job Posting Copy Project Overview: Looking for a talented full-stack developer to redesign/update a website hosted on Porkbun, build a custom multi-signer intake form with secure document upload, and integrate direct, custom backend automations with Blue Notary and QuickBooks Online. No third-party automation tools (Zapier/Make) are permitted. Key Deliverables: Frontend Intake Form: Clean, mobile-responsive design allowing secure file uploads and dynamic forms based on input signer counts. Direct Blue Notary Integration: Connect to Blue Notary’s REST API to instantly initiate a session and pass files upon customer submission. QuickBooks Payments SDK Integration: Implement secure credit card vaulting/tokenization at intake using the official QuickBooks Web Payments SDK. Admin Post-Session Billing Tool: Create a lightweight, secure internal portal where the admin inputs final signer and seal counts. Automated Invoicing Engine: Calculate the final pricing via code on admin submission, generate a line-item invoice in QuickBooks, charge the vaulted card token automatically, and trigger the receipt. Technical Requirements: Proven experience with backend languages (Node.js, Python, PHP, or Go). Deep familiarity with QuickBooks Online Accounting & Payments APIs (specifically tokenized card charges and invoice generation). Strong understanding of REST APIs, webhooks, JSON payloads, and secure file handling over HTTPS. Ability to deliver clean, documented, standalone code without external platform dependencies.

We’re looking for a developer to build a simple web-based portal that integrates with QuickBooks Online to track client invoice payments in real time. The ideal candidate will have experience with APIs and financial software, and be able to develop a user-friendly interface for real-time data tracking.

Mend is a denial-recovery and revenue-cycle service for ABA and behavioral health therapy practices. We find the claims practices have had denied, recover what's collectible, and help stop those denials from recurring. We handle the clients and the analysis; we're looking for strong behavioral health billers to be ongoing partners on the claim work as we grow a biller network. Here's the honest picture of where we are: we're early, and we're building software to take the tedious parts of denial work off your plate, but that tooling isn't finished yet. So this role starts hands-on. You work claims directly, and as we build the tools around how you actually work, you help shape what we automate. You get in before the software exists and influence it, then ride the leverage as it comes online. We'd rather be straight about that than oversell a platform that isn't built. What you'd do: - Work denied and rejected behavioral health claims: appeals, corrected claims, and resubmissions. - Diagnose denial reasons (prior auth, eligibility, coding, coordination of benefits, timely filing) and pursue the ones worth pursuing. - Draft and file appeals and corrected claims, applying your judgment where it counts. - As our client base grows, expand into full revenue-cycle work (eligibility, claim submission, payment posting, end-to-end denial management) for practices that want their billing fully handled. What we're building, and what you'll help shape: - Tooling to auto-surface and prioritize the denials worth working, so no more digging through aging reports. - Pre-diagnosis of the likely denial reason, with the relevant payer rule and authorization history pulled for you. - Appeal and corrected-claim drafts scaffolded for you to review and send. - Deadline and status tracking so nothing slips. As this comes online, it cuts the time per claim, which means more claims cleared in less time and higher effective earnings for you. What we pay: - Per claim worked or per appeal filed, with performance-based upside tied to what gets recovered. We're open to the structure that works best for you rather than a flat hourly rate. - Top performers get first pick of volume as we grow, plus the path to a lead or quality-review role. Must have: - Hands-on medical billing experience, ideally with behavioral or mental health claims. - Familiarity with major payers and their portals (Availity, Optum / UnitedHealthcare behavioral, Aetna, Cigna / Evernorth, Medicaid MCOs). - Comfort drafting and filing appeals, not just submitting clean claims. - Willingness to sign a Business Associate Agreement (HIPAA) as a subcontractor before handling any patient data. Nice to have: - Experience with Illinois payers and Medicaid. - Coding familiarity (CPT and modifiers for therapy services, e.g. 97151 to 97158). - ABA billing experience specifically. The arrangement: - Ongoing contractor relationship, not a one-off project. Volume grows with our client load. - Remote. You set your own hours around claim deadlines. - A steady, growing engagement for the right person, with a real path to expand.

We are seeking an experienced Integration/Solutions Engineer to design, develop, and maintain RESTful APIs for our clients. The ideal candidate will have a strong background in API development, integration, and documentation. You will work closely with our team to ensure seamless API integration and provide technical support throughout the implementation process. This is a full-time, long-term opportunity, and will consider contracted arrangements for someone who can deliver reliable and scalable API solutions. This role sits at the center of complex system interactions — translating real-world clinical, workforce, and operational workflows into reliable, scalable integrations. You’ll work closely with customers, internal engineering teams, and external vendors to connect systems such as EHRs, Workforce Management, Time & Attendance, and HRIS platforms. Success in this role requires strong technical fundamentals, comfort navigating ambiguity, and the ability to own integrations end-to-end — from discovery through delivery. What You’ll Do  Design, implement, and maintain integrations between healthcare systems, including: o EHR / EMR platforms o Workforce Management & Scheduling systems o Time & Attendance systems o HRIS and related operational systems  Lead technical discovery with customers to understand data flows, workflows, constraints, and integration requirements  Translate business and clinical requirements into clear technical designs, mappings, and implementation plans  Own data modeling, transformation, and mapping between disparate systems and schemas  Build and troubleshoot API-based, file-based, and event-driven integrations  Collaborate with internal product and engineering teams to ensure integrations are scalable, secure, and supportable  Manage integration delivery timelines, risks, dependencies, and stakeholder communication  Support authentication and identity integrations, including SSO patterns where applicable  Act as a technical escalation point for complex integration issues in production environments Required Experience & Skills Healthcare & Integration Experience  6+ years hands-on experience integrating healthcare systems such as EHRs, WFM, Time & Attendance, and/or HRIS platforms  Strong understanding of healthcare data concepts and operational workflows  Experience delivering integrations in regulated or high-compliance environments Technical Fundamentals  Strong API integration experience (REST, webhooks, JSON, XML)  High comfort with data structures, schemas, and transformations  Experience with data mapping, normalization, validation, and reconciliation  Ability to read, understand, and debug unfamiliar systems and data formats quickly Project & Delivery Ownership  Proven ability to manage integrations from discovery through go-live  Strong project management skills: scoping, sequencing, dependency tracking, and stakeholder communication  Comfortable working directly with customers and external technical teams Bonus / Nice-to-Have  Familiarity with healthcare interoperability standards such as FHIR and/or HL7  Experience with authentication and identity integrations, including: o SAML, OAuth, OpenID Connect o SSO integrations with enterprise identity providers  Experience working in multi-tenant SaaS environments  Exposure to healthcare compliance considerations (HIPAA, SOC 2, etc.) What Success Looks Like  Integrations are delivered on time, with clear expectations and minimal surprises  Data flows are reliable, well-mapped, and resilient to upstream/downstream changes  Customers and internal teams trust you to own complex integration work  Integration designs scale beyond a single customer or implementation

We're a behavioral health RCM software company looking for an experienced trainer to onboard new client accounts on our platform. What you'll do: Deliver ~6 hours of structured training per account (live, remote) Train client billing/admin staff on our software workflows and best practices Provide post-training support as accounts get up and running You must know: US medical billing codes and payer rules (CPT, HCPCS, ICD-10, modifiers) Behavioral health billing specifically — authorizations, levels of care, common denials, payer nuances The RCM lifecycle end to end (eligibility, claims, AR follow-up, denials) Ideal background: Hands-on RCM or billing experience in behavioral health Comfortable teaching and walking non-technical staff through software Clear communicator, reliable, and organized across multiple accounts Please share your relevant experience and any platforms you've trained on.

I am working on a project to analyze two years of pediatric adjudicated claims data and derive billing optimization rules. The ultimate goal is to create logic that can automatically pre-fill modifiers for CPT codes and recommend ICD-10 selections based on the CPT and payer, helping providers choose the combinations most likely to be accepted and paid correctly. We have all paid and denied claims data available in our proprietary in-house RCM system, including CPTs, modifiers, ICD-10 codes, CARC and RARC codes/descriptions, and other claim-level information. The system allows us to quickly generate reports and apply various filters for analysis. My plan is to use AI to analyze the data using specific parameters to identify patterns between paid and denied claims. Once the AI identifies potential rules and trends, we will manually validate and spot-check the findings to ensure accuracy before implementing anything. My challenge is that I do not come from a medical billing background. At times, I need help validating my data analytical approach, particularly when layering multiple variables such as modifiers, ICD-10 codes, payer-specific rules, and the presence of other CPTs on the same claim. In other situations, I need assistance understanding denial scenarios—for example, determining which CPT a denied code was bundled into and why. I am very cautious about making incorrect assumptions due to gaps in my billing knowledge, so I am looking for someone who can serve as a knowledgeable resource to help verify my reasoning and guide me through more complex billing concepts as they arise.

Stripe Connect marketplace integration including: Client pays for a booking through the platform Payment is held by Stripe until the shoot is marked complete Platform automatically takes 15% commission Videographer receives 85% paid out to their connected bank account Videographer onboarding flow to connect their Stripe account and enter payout details Refund handling if a booking is cancelled before the shoot Booking status updates automatically when payment is made, held, and released Both client and videographer dashboards show accurate earnings and payment history NEXT: Email notifications via Resend when a booking is confirmed, payment is received, and payout is sent An admin dashboard where I can see all bookings, payments, and platform activity in one place What I'm looking for in a developer: Someone who has specifically built Stripe Connect marketplace integrations before, not just general Stripe experience but the full marketplace split payment setup. Please include examples of marketplace projects you've built in your proposal. Please answer these three questions in your proposal: Have you built a Stripe Connect marketplace integration before? If yes describe the project briefly. What is your estimated timeline for this specific scope of work? What is one potential challenge you'd anticipate with this project and how would you handle it? If you're interested and looking to take the site to next level. I would love to chat more, tell you about the business and see if we would be a good fit!