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Limozly is a multi-tenant B2B SaaS platform for limousine and black car operators. It is built, deployed, and substantially complete: seven portals, roughly 650 routes, a working booking and dispatch engine, CRM, pricing, settlements, and a public API. We are looking for one experienced developer to take it from substantially complete to verified and launched. This is a finishing and hardening role, not a rebuild. Someone who enjoys greenfield architecture will be bored. Someone who takes satisfaction in closing the last fifteen percent properly will do well. What you would be working on Stack. [login to view URL] 14 (App Router), TypeScript, Tailwind, Prisma, Supabase (Postgres, Auth, Storage), Stripe Connect, SendGrid, Twilio, Google Maps Platform, Vercel. Domain. Each customer is a limousine operator running dispatch, bookings, fleet, drivers, corporate accounts, hotel partners, and operator-to-operator subcontracting. Multi-tenancy and correct financial handling are central to the product, not incidental. Scale. Around 650 routes and roughly 160 data models. Mature, working, and consistent. Not a rescue. Scope of the engagement 1. Verification and testing Establish real test coverage where it matters most. The platform has been built rapidly and validated largely by inspection rather than by systematic testing. We need someone who will: • test multi-tenant isolation properly, with real accounts across multiple companies • verify permission enforcement across all seven portals • exercise the pricing engine against known expected outputs • test the payment paths end to end, including refunds, captures, and disputes • validate the scheduled jobs and the notification pipeline • set up whatever automated testing gives the best return, and say honestly what does not need it 2. Completion A prioritized backlog exists and will be shared in full on engagement. It is a mixture of features that are built but not yet reachable from the interface, integration paths that need finishing, and a small number of genuine gaps. Most items are hours, not weeks. 3. Hardening Security review and remediation before launch: credential rotation, tenant isolation verification, database access controls, audit logging completeness, and a review of the payment paths. 4. Launch Take the platform to production readiness and through go-live. Includes release process, environment configuration, monitoring, and a rollback plan. What we need from you Required • Senior-level [login to view URL] App Router and TypeScript in production. Not tutorial familiarity: you should have opinions about server components, caching, and where things go wrong. • Prisma and Postgres, including schema evolution on a live database without downtime or data loss. • Stripe Connect specifically, not just Stripe. Destination charges, connected accounts, webhooks, and disputes. • Real multi-tenant SaaS experience. You should already know why row-level security matters and what happens when application-level filtering is the only thing standing between two customers' data. • A track record of taking something from nearly finished to actually shipped. This is the single most important line in this section. Valued • Transportation, logistics, dispatch, or marketplace software • Supabase specifically • Experience inheriting a codebase you did not write, and being honest about what you find How you work • You verify before you assume. This codebase has features that are built but invisible, and integrations that appear absent locally because credentials live only in production. Someone who concludes "this is missing" without checking will waste weeks. • You are comfortable telling the founder that something is a bad idea. • You can explain technical decisions to a non-developer without either condescending or hiding behind jargon. How we work This is a two-person build, not a handover. The founder is non-technical and directs development through written specifications, working alongside an AI coding assistant. That is how the platform reached its current state and it continues throughout the engagement. You are joining an active build, not inheriting an abandoned one. Your role is senior engineering judgment, verification, and the decisions that need someone who reads code. Practically this means: • you own architecture, technical decisions, code review, and correctness • the founder continues developing daily alongside you and is closely involved in every part of the product • work is coordinated: you will be reviewing and building on changes made in parallel, and the founder will act on your direction • anything you need verified by the founder must be doable in a browser or by running a command you provide • written communication over meetings If you would find it difficult to work alongside a non-technical founder who is actively writing specifications and shipping code, this is not the right engagement. If you would find it efficient, it is unusually so. Existing conventions are documented in the repository and a full technical handover document exists. You will not be reverse-engineering from scratch. Explicitly not in scope • Rewriting the platform or migrating the stack • Redesigning the interface • Changing the payment architecture. Limozly deliberately takes zero percent of any ride. Operators are billed for software only, and ride money goes directly to their own Stripe accounts. This is a product decision and a competitive position, not an oversight. • Building a native mobile application Engagement shape • Contract, remote, with a defined completion milestone rather than an open-ended retainer • We would expect to start with a paid two-week assessment: you review the codebase, verify what works, and deliver your own prioritized plan with estimates. Both sides learn a great deal from this, and either can walk away cleanly at the end of it. • After the assessment, a milestone-based agreement through to launch • Rate and hours to be discussed. Tell us what you need to do this properly rather than what you think we want to hear. Access and confidentiality This is a live commercial platform with real operator data. Access is granted in stages, and only after both of the following: 1. A signed non-disclosure agreement. No repository, database, or infrastructure access is granted before this. No exceptions, including for evaluation purposes. 2. Verified experience. We check references and confirm the specific experience claimed, particularly around multi-tenant SaaS and Stripe Connect. We will ask to speak to someone who worked with you on a comparable system. Once both are complete, access is provisioned for the assessment period, scoped to what the work requires. Full production and infrastructure access follows the assessment, not before it. We are direct about this because a previous engagement ended, and revoking access across a dozen systems taught us to grant it deliberately in the first place. We expect any senior candidate to consider this normal, and we extend the same seriousness to your interests: the agreement will be mutual and reviewable before signature. To apply Please send: 1. Two or three examples of production systems you have shipped, ideally multi-tenant SaaS. Links or a short description of your specific role. 2. Your experience with Stripe Connect, described concretely. 3. A short answer to this: you join a project where a feature appears to be missing. Before concluding it needs building, what do you check, and in what order? 4. Your availability and rate. 5. Two references we may contact, at least one from a project comparable in scale or domain. We will not ask you to complete an unpaid take-home exercise. The paid assessment is the evaluation, and it begins once the NDA is signed and references are confirmed.
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331 freelancers están ofertando un promedio de $466 USD por este trabajo

Hi — Elias here from Miami. I see you're looking to complete and launch the Limozly SaaS platform for limousine and black car operators. This project is key for streamlining operations in a competitive market. What usually matters most here is ensuring the platform is scalable and can handle multiple users seamlessly. A common issue in systems like this is managing user roles and permissions effectively, especially when integrating with services like Twilio and SendGrid. The tricky part is usually ensuring reliability and maintaining performance as your user base grows. My approach would involve structuring the backend with a focus on stability and maintainability, leveraging Supabase and Prisma for efficient data handling. Implementing a robust API structure will facilitate smooth integrations and future feature expansion. I've worked on similar multi-tenant platforms where I optimized user workflows and enhanced security through comprehensive audits. A few questions to better understand the scope: Q1 – What specific user roles and permissions do you envision for the platform? Q2 – Are there any particular integrations with third-party services that are critical for launch? Q3 – What are your scaling expectations over the next year? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$600 USD en 5 días
7,7
7,7

NOT_A_GOOD_FIT
$420 USD en 4 días
6,3
6,3

Hello!! I have seen your project post as you need {{ Limozly SaaS Platform Completion & Launch }} . According to your requirements, I can help complete, verify, harden, and successfully launch your multi-tenant SaaS platform without unnecessary rewrites. I have 13+ years of experience in web and mobile application development and have successfully delivered enterprise SaaS platforms, booking & dispatch systems, CRM solutions, marketplace applications, and AI-powered web applications. I understand this is a finishing and production-hardening engagement rather than a greenfield build. My approach is to first audit the existing codebase, verify multi-tenant isolation, permissions, Stripe Connect workflows, scheduled jobs, notification pipelines, and security before completing the remaining backlog. I always verify existing functionality before assuming anything needs to be rebuilt, ensuring time is spent only where it adds value. I am comfortable working with existing architectures, collaborating closely with founders and development teams, reviewing code, improving test coverage, optimizing performance, and preparing platforms for a stable production launch. I will provide 2 years of free ongoing support, complete source code, work with Agile methodology, and assist you from development through successful production deployment. I am available to start immediately and would be happy to discuss the assessment phase and long-term collaboration. Thanks, Christina
$600 USD en 6 días
5,9
5,9

Hello Greetings, After reviewing your project description, I feel confident and excited to work on this project for you. But I have some crucial things and queries to clear up. Please leave a message on chat so we can discuss this, and I can share my recent work similar to your requirements. Thanks for your time! I look forward to hearing from you soon. Best Regards.
$700 USD en 8 días
5,7
5,7

Hello, My recent work covers production SaaS systems with TypeScript, Postgres, payments, and API Development across mature codebases. I understand the need to verify tenant isolation, Stripe Connect payment paths, permission rules, and Twilio notifications before launch. I would start with the paid assessment, read the existing conventions, and test what is already present before marking gaps. Then I would prioritize coverage for pricing, refunds, disputes, scheduled jobs, and Security Auditing, followed by release checks, monitoring, and rollback planning. Best regards, Teo
$500 USD en 5 días
4,5
4,5

What stands out is that Limozly doesn't need another developer adding features—it needs someone who can verify assumptions, expose edge cases, and take a mature multi-tenant platform safely through launch. At this stage, correctness around tenant isolation, payments, and production readiness matters far more than development speed. I'd begin the paid assessment by validating what's already implemented before touching the backlog. That means tracing each feature from UI to database, confirming multi-tenant boundaries, permission enforcement across all seven portals, Stripe Connect payment flows, scheduled jobs, notifications, and pricing outputs against expected results. From there, I'd prioritize the remaining backlog based on launch risk, introduce automated tests where they provide the highest return, review security around RLS, credentials, audit logging, and deployment, then document a release plan with rollback steps before production. I also like your expectation that conclusions should follow verification. On inherited platforms, features often appear missing because they're hidden behind configuration, feature flags, or production credentials, so I'd validate those paths before recommending changes. The two-week assessment is a sensible way to align on the platform before committing to launch. Could you share whether automated testing already exists in any form, or would the assessment begin from essentially manual verification?
$450 USD en 15 días
4,6
4,6

Systems: Poundit (multi-supplier e-commerce, Stripe subscription lifecycle + webhook reconciliation + dunning + failed-payment retry, 400+ SKUs), Marin Software (LangChain AI agent platform, Python + AWS Lambda + real-time pipelines, multi-tenant AI workflows). Both multi-tenant production, both required schema evolution on live data. Stripe honestly: subscription-side (create/update/cancel, webhook reconciliation, dunning, disputes) at Poundit. Stripe Connect specifically — destination charges, connected accounts, marketplace payouts — I have not shipped. Could ramp fast, but pretending equivalent depth would fail your reference check. If Connect is the deciding factor, I'm the wrong hire. If multi-tenant + verification + shipping-discipline dominates, that's my strength. "Missing feature" check order: (a) grep the codebase — 90% of the time it's built and unreachable; (b) check API routes and internal handlers, not just UI — features often exist server-side without a client entry point; (c) env vars and feature flags may gate what's visible locally; (d) git log for recently touched and removed code; (e) other environments (staging/dev); (f) fresh test data on a fresh account; (g) only then ask the founder with a "here's what I checked" preface.
$400 USD en 6 días
4,4
4,4

Hello sir, Did go through your job description and glad to share that I have enormous experience in working with Limozly SaaS Platform Completion & Launch I'm a seasoned programmer and Engineer with quality experience in Flutter, React, Node.JS, SpringBoot, Frontend and Backend Development, Python, Matlab, R studio, C, C++, C#, OpenCV, OpenGL, Tesseract OCR, google vision, Statisticaal programming/R progamming data analysis Computing for Data Analysis Time Series & Econometric, Machine learning, AI, Deep learning, Matlab and Mathematica, 3D modeling, CAD/CAM,AutoCAD, 2D, Architectural Engineering, SolidWorks, Unity 3D, PCB, Electronics, Arduino, Automation, Embedded and Firmware , IOT, Electrical/Mechanical Engineering I am a TOP Rated Freelancer, and you can check my reviews here as well: https://www.freelancer.com/u/mzdesmag. Looking forward to potentially working together on this project. Thanks and Best regards, Adekunle.
$250 USD en 2 días
4,2
4,2

Hi, I checked your "Limozly SaaS Platform Completion & Launch" project and it looks like the focus is on delivering a clean, responsive website that works well across all devices. I prefer understanding the expected layout and user experience first, then building pages that closely match the design while keeping the code organized and easy to maintain. Feel free to share the design or current website, and I'll suggest the best implementation along with a realistic timeline. Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$300 USD en 12 días
4,2
4,2

Hi, I understand you need a senior full-stack developer to verify, harden, and launch your existing multi-tenant SaaS platform without disrupting its architecture. I am confident you'll be happy with the results. If not, you do not pay. I will also provide three months of free maintenance after the project is completed. I can thoroughly review your codebase, validate multi-tenant isolation, verify permissions across all portals, test the pricing and payment workflows, and strengthen the platform through targeted security reviews and production-ready testing. I'll also work through your existing backlog, complete the remaining integrations, and help deliver a stable, secure launch with proper monitoring and rollback planning. The project will include platform verification, feature completion, security hardening, testing, deployment support, production launch assistance, source code delivery, and ongoing technical collaboration. Please check out my profile to review my past projects and portfolio: https://www.freelancer.com/u/Hammadhassan21 I am available to start immediately. Ping me to discuss the details and get started. Thanks.
$500 USD en 7 días
3,7
3,7

I've worked on SaaS platforms where the difficult part wasn't building new functionality but proving that existing behavior was correct under real-world conditions. On a codebase of this size, I'd focus first on verifying tenant boundaries, financial workflows, and permission enforcement before assuming anything is missing, since production behavior often differs from local environments due to configuration and credentials. I'd begin by reviewing the documented conventions and handover, then validate the highest-risk workflows against expected outcomes while building targeted automated tests around payments, multi-tenancy, and scheduled processes. That provides confidence to complete the remaining backlog without introducing regressions. The biggest challenge is distinguishing genuine implementation gaps from features that are already present but hidden behind permissions, feature flags, environment configuration, or production-only integrations. 1. During the assessment, how do you expect verification findings to be documented and prioritized so they can be reviewed alongside the existing backlog? 2. For the seven portals, which business workflows are considered launch-critical and must receive full end-to-end validation before production sign-off? If we're aligned, I can outline the implementation phases before kickoff. Best regards **Mojjammil**
$360 USD en 4 días
3,9
3,9

Hello!! Your existing Limozly platform will be thoroughly verified, hardened, completed, and prepared for a confident production launch without unnecessary rewrites or disruption to the current architecture. • Which backlog items have the highest priority for launch? • Is the testing environment already configured with production like data? • Would you like the assessment to include a complete security review? Similar SaaS platforms have been completed by validating existing features, strengthening security, improving test coverage, reviewing Stripe integrations, and preparing reliable production releases. Every decision is based on careful verification, ensuring the platform launches with stability, scalability, and confidence instead of assumptions. Looking forward to discussing your project in chat. Best regards Farhin B
$250 USD en 10 días
3,9
3,9

Hi, On your third screening question first, since it's the sharp one: before concluding a feature is missing I check the route and component tree for a built but unlinked page, then confirm whether the integration only fails locally because credentials live in production, then read the handover doc and grep the schema for the model. Verify, then build. We've built dispatch and booking software for a licensed transport operator with multi-channel booking and real-time tracking, so the domain is familiar ground. IbizaCab: taxi and driver operations platform I've also shipped Stripe payment flows and Twilio and SendGrid integrations across live systems. Multi-tenant isolation and Stripe Connect destination charges are exactly where I'd want the test coverage to start. Given the paid two-week assessment shape, what does your handover doc say about current tenant isolation, RLS or application-level filtering? Adil
$550 USD en 7 días
3,6
3,6

Hi, this is Kris from McKinney, Texas, I've reviewed your project requirements and understand that the key challenge lies in taking the Limozly SaaS platform from substantially complete to verified and launched, ensuring proper testing, completion, hardening, and successful launch. My approach involves establishing real test coverage, prioritizing backlog items for completion, conducting security reviews, and guiding the platform through the launch process seamlessly. A few additional questions: Q1: How soon are you looking to start the engagement? Q2: Are there any specific integration paths that require immediate attention? Q3: What are the key performance indicators for a successful launch of the platform? Best regards, Kris Kramer
$250 USD en 1 día
4,4
4,4

Your biggest launch risk isn't the last 15%. It's tenant isolation and the Stripe Connect paths, the parts that get costly to fix after go-live. On Prisma with Supabase, the first thing I'd verify is whether Postgres RLS is actually enforced, or whether Prisma is connecting through a role that bypasses it, leaving app-level filtering as the only thing between two operators' data. Same care on payments: destination charges, webhook idempotency, plus refunds, captures, and disputes tested end to end. And I confirm before calling anything missing, since a feature that's absent locally is usually a credential or a UI path that only lights up in production. Given that, one question: is Prisma reaching Postgres through a single service role, or is there a per-request tenant context driving the RLS policy? That answer tells me where isolation testing should begin.
$500 USD en 7 días
3,7
3,7

Hi, It looks like the main challenge here is verifying a complex multi-tenant system where small oversights in permission handling or financial flows could have big consequences. The fact that the platform is already built but not yet systematically tested suggests the work will be about proving correctness rather than rebuilding. I’ve shipped similar multi-tenant SaaS platforms like Leadfish, where the trickiest part was always verifying tenant isolation and ensuring financial operations like Stripe Connect transfers worked exactly as intended. The same pattern usually applies here—running real-world scenarios through the system, checking edge cases in permission logic, and confirming that background jobs don’t drift out of sync. One thing I’d focus on right away is the Stripe Connect flow, especially how disputes and refunds behave across connected accounts. It’s easy to assume a path works until a real dispute hits, and then the money movement breaks in ways that are hard to untangle later. Testing those scenarios with actual test accounts will be crucial before launch. The biggest unknown feels like how the existing data model handles edge cases in financial reporting—whether the pricing engine consistently produces the expected outputs when operators have complex rate structures or subcontracting arrangements. A small miscalculation there could ripple through settlements and cause real headaches. Thanks, Denis
$250 USD en 3 días
3,8
3,8

Hi, I’ve worked on taking complex SaaS platforms from late-stage development to production readiness, including verifying existing functionality, improving reliability, and closing critical gaps before launch. Your focus on hardening rather than rebuilding matches the type of work where careful review and engineering judgment matter most. A key challenge is validating multi-tenant security, payments, and integrations without disrupting a mature system. I’d begin by auditing the existing codebase, verifying flows across portals, checking tenant isolation, Stripe Connect/payment handling, scheduled jobs, and identifying what is already built before recommending changes. I’ll provide a structured assessment, prioritized roadmap, testing improvements, security fixes, deployment readiness checks, and launch support while maintaining the existing architecture and conventions. Best Regards, Fizza
$500 USD en 7 días
3,3
3,3

Hi, I hope you're doing well. I have carefully reviewed your project, Limozly SaaS Platform Completion & Launch , and I'm confident I can deliver a high quality solution tailored to your requirements. I'm a Full Stack Developer with 4+ years of experience building websites, SaaS platforms, AI powered applications, automation tools, web scrapers, lead generation systems, and custom software. I focus on delivering reliable, high quality solutions that meet business objectives while maintaining accuracy, performance, and scalability. I'd be happy to discuss your project in more detail and recommend the best approach before we get started. I look forward to working with you. Best regards, Arslan Shahid Full Stack Developer | Technical Fixes | AI Automation | Lead Generation & Extraction Expert | Websites Dev
$500 USD en 7 días
3,7
3,7

Hello. I can take Limozly from substantially complete to verified and launched by focusing on verification, hardening, and launch readiness rather than rebuilding. I recently completed a similar multi-tenant SaaS platform where I audited security, enforced tenant isolation, and validated Stripe Connect payouts—finding and fixing subtle permission gaps that weren’t visible in routine testing. I’d approach this by prioritizing end-to-end testing of multi-tenant isolation and payment paths first, then hardening with automated checks and audit logging before refining any remaining integration gaps. The biggest improvement will come from verifying what’s already built but untested, especially around tenant-specific financial flows. The result ensures the platform handles real operator data without leaks or payment failures when it matters most. If we’re aligned, I’d be happy to review the existing implementation and suggest the safest approach before making any changes. Thanks, Lazar.
$250 USD en 2 días
2,9
2,9

Hi, This is exactly the kind of project where engineering judgment matters more than feature development. From your description, the platform is already functionally rich—the remaining work is verification, hardening, and ensuring it is genuinely production-ready before launch. My first priority would be to validate the existing system rather than assume anything is missing. I would review the documented conventions, verify multi-tenant isolation, permission boundaries, Stripe Connect flows, scheduled jobs, and notification pipelines, then compare implementation against the backlog before proposing any changes. From there, I'd prioritize automated testing where it provides the greatest return, complete the remaining integration gaps, perform a security review, and prepare a controlled release process with monitoring and rollback procedures. I appreciate your staged assessment approach and the emphasis on written communication. It aligns well with reviewing an established codebase methodically instead of rushing into refactoring. Before planning the assessment, I'd like to clarify one point: do you already have automated tests in place (unit, integration, or end-to-end), or would the testing strategy be built from the ground up during the verification phase? Jaroslav Caprata
$500 USD en 5 días
2,9
2,9

Dedham, Canada
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