Launch Salon POS SaaS App

@mascotindia123

Hello, I have carefully read your complete requirements, and it would be an honor to work with you. With 14+ years of experience in NestJS, React, PostgreSQL, SaaS platforms, and mobile app deployment, I can take your existing multi-tenant salon POS from its current state to a secure, production-ready launch. I will deploy the backend, configure Fiserv/CardPointe, Twilio, SendGrid, and Google Maps integrations, validate payment workflows and tenant isolation, and prepare and submit the iOS and Android apps, including Apple Tap-to-Pay requirements. Please check my profile to see my reviews and ratings from previous clients. I can also share relevant SaaS and payment integration experience during our discussion. I am committed to delivering a stable, scalable launch with thorough testing and post-launch support. Budget and timeline can be discussed further. Warm regards, Harpreet Singh

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand your goal to launch a salon POS SaaS app with a complex stack involving NestJS, PostgreSQL, React, and Capacitor for iOS/Android. My background in handling high-complexity systems, including successfully serving over 1 million users and working on high-security FinTech projects, directly applies to the challenges of finishing and launching your multi-tenant nail-salon point-of-sale SaaS. For strategic insight, ensuring scalability and security in your app is key. One pro-tip is to thoroughly validate the payment integrations against the processor sandbox and review the payment/auth/tenant-isolation code to guarantee a seamless experience for your users. Drawing from my experience, I am well-equipped to handle the intricacies of this project, having worked on similar high-stakes developments in the past. I am ready to collaborate with you to bring your project to fruition. Feel free to reach out to discuss the roadmap further and how we can work together to successfully launch your salon POS SaaS app.

@webbookstudio

Hi there, We understand you need an experienced developer to launch your existing multi-tenant salon POS SaaS app, built with NestJS, PostgreSQL, React, and Capacitor. With our 17 years of experience in web and mobile development, including proven expertise in NestJS, React, and PostgreSQL, we're confident in our ability to take your app to launch. Our team has successfully completed similar projects, such as a music voting mobile app using React Native and a furniture store mobile shopping app using Flutter. We'll deliver a fully functional SaaS app with integrated payment gateways, including Fiserv payments, and ensure a smooth deployment on Railway or Render. Can you tell us more about your current deployment setup and what specific challenges you've faced so far? Feel free to message us to discuss the details! — Webbook Studio

@ahmadayaz

With expertise in NestJS, React, and PostgreSQL, I am well-equipped to launch and integrate your salon POS SaaS with services like Fiserv and Twilio. I have a proven track record in validating payment integrations and ensuring compliance with app store standards. Let's discuss performance optimization and scalability strategies for long-term success. Share your roadmap and future integration plans for tailored collaboration.

@diektech

Hi — Elias here from Miami. I understand you're looking to finish and launch a multi-tenant salon POS SaaS app. The goal here is to ensure a smooth rollout while maintaining a robust and scalable system. What usually matters most here is ensuring that the architecture can handle multiple users efficiently without compromising performance. A common issue in systems like this is managing the complexity of user roles and permissions, especially when integrating with various payment gateways and external APIs. My approach would involve reviewing the existing codebase to assess its structure and identify areas for optimization. I focus on building a stable foundation that allows for easy maintenance and future enhancements. This might include refining the user workflows and ensuring the backend can scale as your user base grows. I have experience with similar SaaS applications, particularly in ensuring their reliability and ease of use. A few questions to better understand the scope: Q1 – What specific features do you prioritize for the initial launch? Q2 – Are there any existing integrations you want to maintain or enhance? Q3 – What are your expectations regarding user roles and access permissions? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.

@om26er

Hi I can setup backend and submit app on Test Flight. Let’s chat to discuss more in details and proceed further

@kamran2012

Hi, I will deploy your 193k-line NestJS + PostgreSQL backend to Railway, wire up Fiserv (CardPointe + CommerceHub), Twilio, SendGrid, and Google Maps, then build and submit the Capacitor apps to both stores, including the Apple Tap to Pay entitlement. On a recent multi-tenant POS project, I caught a tenant isolation gap during payment webhook handling that would have leaked transaction data across accounts. I will run the same review on your payment and auth code before anything goes live. Questions: 1) Do you already have Fiserv sandbox credentials and a CardPointe merchant ID, or do those need to be set up first? 2) Is the Apple Developer account enrolled in the Apple Pay platform, or does the Tap to Pay entitlement request still need to be submitted? Looking forward to talking through the details. Kamran

@bhatti

Greetings! I bring 8+ years of experience, having worked with 100+ clients, specializing in SaaS app development, particularly with NestJS, React, and PostgreSQL. My approach involves deploying the backend, integrating payments, and submitting iOS/Android apps. To begin, I'll deploy the backend on Railway or Render, ensuring end-to-end functionality. Next, I'll integrate Fiserv payments, Twilio SMS, SendGrid, and Google Maps, validating payment integrations against the processor sandbox. I'll review the payment, authentication, and tenant-isolation code, ensuring a secure and reliable system. Then, I'll build and submit the iOS and Android apps, including Apple Tap-to-Pay entitlement. I invite you to message me to discuss the project and review my portfolio. Best regards, M H B

@webperfection123

Hi, I have extensive experience with NestJS, React, and PostgreSQL, and I’ve worked on several payment integrations including Fiserv. I can deploy your backend on Railway or Render and ensure everything runs smoothly from end to end. Additionally, I can wire the real accounts for payments, SMS, and mapping services, while validating integrations effectively. I’ll also handle the app submission for both iOS and Android, ensuring compliance with the necessary entitlements. Let’s discuss how we can get your app launched successfully! Best Regards, Priyanka

@corpmember29

Hello, I HAVE WORKED ON SIMILAR POS, SAAS, AND PAYMENT INTEGRATION PROJECTS BEFORE AND I CAN SHOW YOU. I have carefully reviewed your requirements and understand that you need to complete and launch your multi-tenant salon POS SaaS, including NestJS backend deployment, React application validation, PostgreSQL optimization, Fiserv/CardPointe integration, Twilio, SendGrid, Google Maps, payment security review, tenant isolation, and iOS/Android app submission. I have 10+ years of experience in NestJS, React, PostgreSQL, SaaS platforms, payment gateway integrations, Capacitor, and App Store/Google Play deployments. I can help stabilize the existing codebase, validate production readiness, and deliver a secure, scalable launch. We will follow an Agile development methodology throughout the project. I will provide 2 years of free ongoing support, complete source code, and assist you from deployment through successful store publishing. I am available on desk as per your convenient time zone and will work on your project until you are satisfied with my work. Thanks, Christina

@Hammadhassan21

Hey, i will help finish and launch your multi-tenant salon POS SaaS by taking your existing NestJS, React, and PostgreSQL codebase through production deployment, validating critical integrations, and ensuring the platform is secure, stable, and ready for real customers. My focus will be on a smooth production rollout while preserving your existing architecture and automated test coverage. I will deploy the backend, configure Fiserv/CardPointe, Twilio, SendGrid, and Google Maps integrations, verify payment flows and tenant isolation, and prepare your Capacitor apps for App Store and Google Play submission, including Apple Tap to Pay requirements. I will also review the production environment, security, and deployment pipeline to ensure a reliable launch. i am interested to doing this work and i am agree with your budget Do you already have production credentials for Fiserv, Twilio, SendGrid, and Apple Developer accounts, or should the initial deployment use sandbox environments? portfolio: https://www.freelancer.com/u/Hammadhassan21 Best Regards: Hammad Hassan

@KatrinaQ

Hi, I've been developing and launching SaaS platforms for 20 years, including production-ready POS systems with payment integrations and mobile apps, so this is a direct match for my experience. I'll review the existing codebase and tests, then deploy the backend on Railway/Render with PostgreSQL, ensuring tenant isolation and security for the multi-tenant setup. Next, I'll wire the Fiserv CardPointe integration—verifying the sandbox environment, payment flows, and auth handling—while configuring Twilio SMS, SendGrid, and Google Maps services. After validating these against test transactions, I'll build and submit the iOS/Android apps via Capacitor with Apple Tap-to-Pay entitlement, handling App Store and Play Store requirements. I’ll ensure the payment integrations are production-tested for reliability before launch.

@onkarkulkarni8

Hi, I can help with your "Launch Salon POS SaaS App" project. I develop clean, maintainable PHP backends — core PHP and Laravel/Symfony, MySQL schema design, and well-structured REST APIs. For work involving php, mobile app development, android, postgresql, angularjs, ios development, twilio, saas, I pay close attention to validation, security, and readable code, delivering in small, testable milestones. You'll get clean commits and clear documentation. Could we discuss the specifics before I firm up the timeline? ⭐ 5.0/5 from a recent client: "it was great working with him, did whatever changes i asked him as per my need." Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.

@einnovention

Launching a 193k-line multi-tenant POS without a production hardening pass risks payment failures, tenant-data exposure, and app-store rejection. I’ll take the existing NestJS/React/Capacitor platform through deployment, integration validation, and release readiness. ⭐ I have 10+ years of experience in SaaS architecture, NestJS, React, PostgreSQL, secure multi-tenant systems, payment integrations, and production deployment. ⭐ It's great that the automated test suite is already passing—I'll use it as a safety net while validating production behavior, third-party integrations, and deployment readiness. I can share relevant SaaS, payment, and mobile-launch work samples during our discussion. You’ll get: • Backend deployment and environment setup • PostgreSQL production optimization & backups • Fiserv/CardPointe sandbox validation • CommerceHub payment flow validation • Twilio, SendGrid, and Maps integration • Payment, auth, and tenant-isolation review • iOS and Android production builds • Tap to Pay entitlement support • App Store and Play Store submission • Launch checklist and handover notes I'll prioritize the highest-risk production blockers first, then validate the complete payment, authentication, and transaction flow across web and mobile before the final release. Do you already have active Fiserv sandbox credentials and Apple Tap to Pay entitlement approval? Best regards, Einnovention

@eliaa

Hi, I see you need to finish and launch a multi-tenant salon POS SaaS app with a large existing codebase which can be tricky due to potential data isolation and scaling issues. Handling multi-tenancy securely while ensuring seamless performance is a challenge Smart Sols is well-equipped for due to our 10+ years working with Laravel and large PHP applications. How are you currently managing tenant data segregation and security within the app? Let's discuss how we can help you launch smoothly.

@giaphung2k1

Hello It sounds like you need to move past the development phase and finally get your multi-tenant SaaS live. I have successfully navigated the complexities of multi-tenancy, including tenant isolation and subscription billing integrations, for two previous SaaS launches. I understand the deployment hurdles you’re facing and can help you clear the remaining backlog to hit production this month. Are you available for a brief call tomorrow to discuss your specific launch blockers? Giáp Văn Hưng

@mahig47

Hello! As per your project post, you are looking for an experienced full stack developer to take your existing multi tenant salon POS SaaS platform from a well tested codebase to a production ready launch. The project focuses on deployment, infrastructure setup, third party service integration, payment validation, security review, and successful release of the web and mobile applications. My focus will be on completing the production deployment, configuring the NestJS and PostgreSQL backend, deploying the React web applications, validating tenant isolation, integrating and testing Fiserv CardPointe, CommerceHub, Twilio, SendGrid, and Google Maps, reviewing authentication and payment workflows, preparing the Capacitor based iOS and Android applications, implementing Apple Tap to Pay requirements. I specialize in NestJS, React, Vite, PostgreSQL, Capacitor, TypeScript, REST APIs, multi tenant SaaS platforms, payment gateway integrations, cloud deployment, DevOps, mobile application publishing, and enterprise application architecture. My focus will be on ensuring your platform is secure, scalable, production ready, and fully validated before launch while maintaining the stability of the existing codebase. I would be happy to discuss your requirements and help take your existing SaaS platform from development to a secure, stable, and successful production launch. Best regards, Nikita Gupta

@mrresearcher99

Hello, With 10 years of experience in full-stack and mobile application development, I can help take your multi-tenant SaaS platform from a stable codebase to a successful production launch. My expertise with React.js, Node.js, PostgreSQL, REST APIs, and Android/iOS applications enables me to efficiently deploy, validate, and optimize complex SaaS systems. My approach is to begin with a comprehensive review of the existing architecture, deploy the backend, verify tenant isolation and payment workflows, integrate external services, and perform end-to-end testing before preparing the iOS and Android builds for store submission. I prioritize clean architecture, secure coding practices, performance optimization, scalable deployment, and maintainable code to ensure a reliable production release with minimal risk. I’d be happy to discuss your launch plan and the remaining milestones in detail. Best regards

@webbookstudios

Hi there! I'm Markiyan, a full stack developer and head of a web development agency, and I'm excited to help you launch your Salon POS SaaS app. I understand you have a large, working codebase for a multi-tenant nail-salon point-of-sale SaaS and need an experienced developer to take it to launch, focusing on deploying the backend, wiring real accounts, and validating payment integrations. With my experience in NestJS, React, and PostgreSQL, as well as payment integration experience, I'm confident I can deliver a fully functional and secure SaaS app. My team has built similar projects, including a mobile app for a music voting platform using React Native and a website for an electric bike company using PHP and WordPress. I can deliver a launched SaaS app with end-to-end functionality, including payment integrations and mobile apps for iOS and Android. One question: what is the current status of the payment integration code, and are there any specific requirements or timelines for the launch? Feel free to message me to discuss the details! — Markiyan