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App Developer Needed (Lovable + Supabase + API Integrations) We are building an app and are looking for an experienced developer or small team to help build and launch the platform within a fast timeline. The app will use: • Lovable for rapid front-end development • An independently managed Supabase backend • Third-party APIs for onboarding, payments, notifications, and related services The key requirement is that the backend, APIs, database, and user data remain fully owned outside Lovable to allow future migration into a standalone app. Only send your interest if you have real experience with trading, reconciliation and cross border payment rails. Scope of Work • Setup external Supabase environment • Configure authentication and database structure • Integrate APIs • Setup payment/deposit workflows • Configure trade order and payment reconciliation logic • Configure Lovable front-end flows • Implement notifications and admin functionality • Ensure scalable and migration-friendly architecture Ideal Candidate Looking for someone with experience in: • Supabase • Lovable • API integrations • Payment or transaction flows • Trade order and payment reconciliation • Backend architecture The ideal team must be: • Practical and fast-moving • Comfortable in startup environments doing the extra to show real stake in the project (if chased for updates project will be terminated) • Strong with integrations and backend setup Able to work independently
Project ID: 40465861
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129 freelancers are bidding on average $2,269 USD for this job

Hello, Good Day! I’m very interested in helping build your app using Lovable, Supabase, and external API integrations. Your requirement to keep the backend, database, APIs, and user data fully independent from Lovable is the correct long-term approach, and I have strong experience building scalable, migration-friendly architectures for startup platforms. At Imara Software Solutions, we have hands-on experience with Supabase, payment/deposit workflows, API integrations, authentication systems, notifications, admin panels, and reconciliation logic for transaction-based platforms. I also have experience working with fintech-style systems involving payment flows, trade/order reconciliation, and cross-border integrations. We are fast-moving, proactive, and comfortable working independently in startup environments with tight timelines. We can help with external Supabase setup, scalable DB architecture, API integrations, payment workflows, Lovable front-end configuration, and admin functionality while ensuring future portability into a standalone application. I’d be happy to discuss your platform requirements and launch goals further. Kind Regards, Rinsad
$1,500 USD in 7 days
9.8
9.8

With over a decade of experience in full-stack architecture and high-scale systems, I understand the urgency of your project to rapidly develop an app using Lovable, Supabase, and API integrations. My background in delivering solutions for over 1 million users and handling complex FinTech systems directly translates to the challenges of creating a scalable and secure platform within a fast timeline. For strategic insight, ensuring a fully owned backend and database structure outside of Lovable is crucial for future migration. I have successfully implemented similar setups in the past, showcasing my ability to handle trading, reconciliation, and cross-border payment rails with ease. I encourage you to reach out so we can discuss the roadmap for your project. I am confident that my expertise in Supabase, Lovable, API integrations, and backend architecture align perfectly with your requirements. Let's work together to bring your app to life efficiently and effectively.
$2,400 USD in 30 days
9.0
9.0

Hi — Elias here from Miami. I see you're looking to build an app using Lovable, Supabase, and various APIs. This is an exciting project, but I know getting the integrations right is often where things can go sideways. Misalignment between the APIs and your app’s requirements can lead to delays and headaches. Common issues include troubleshooting payment gateway integrations and ensuring data consistency across platforms. These can be tricky, but I've handled similar challenges before and have a solid approach to keep things on track. My focus will be on creating a seamless experience with robust backend support. I'll start by mapping out the API requirements and ensuring everything is set up to communicate effectively. Regular updates and testing along the way will help catch any issues early. Could you share more about the specific API integrations you're planning? Also, how do you envision the user experience with Lovable? Looking forward to discussing this further.
$2,000 USD in 10 days
8.4
8.4

⭐⭐⭐⭐⭐ Experienced App Developer for Lovable, Supabase, and API Integrations ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project details and see you're looking for an app developer. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed over 50 similar projects in app development. I will set up the external Supabase environment, configure authentication, and integrate third-party APIs efficiently within your timeline. ➡️ Why Me? I can easily build your app using Lovable and Supabase as I have 5 years of experience in app development, focusing on API integrations, payment workflows, and backend architecture. I also have a strong grip on trading systems and reconciliation processes, ensuring your project runs smoothly. ➡️ Let's have a quick chat to discuss your project in detail, and I can show you samples of my previous work. Looking forward to our chat! ➡️ Skills & Experience: ✅ Supabase ✅ Lovable ✅ API Integrations ✅ Payment Workflows ✅ Trade Order Management ✅ Reconciliation Logic ✅ Backend Architecture ✅ User Authentication ✅ Notifications Setup ✅ Scalable Architecture ✅ Database Management ✅ Fast Development Waiting for your response! Best Regards, Zohaib
$1,800 USD in 2 days
7.9
7.9

Hello, We’ve thoroughly reviewed your project details and are excited about the opportunity to collaborate on developing your app with Lovable, Supabase, and API integrations. Your need for a fast-moving developer with proven experience in backend architecture and payment reconciliation aligns perfectly with our expertise. Our team has successfully completed projects involving Supabase setups and API integrations, ensuring scalable, migration-friendly solutions. We recently developed a platform that maintained independent backend architecture while integrating complex payment workflows and reconciliation logic, demonstrating our capability in this domain. With over eight years of experience, including AI-first product development and scalable applications, we are confident in delivering a robust, real-world-ready app. Our portfolio showcases our proficiency in PHP, JavaScript, and backend development, aligning with your requirements for a practical and independent team adept in startup environments. We would love to discuss your project further. Please message us with more details, and we'll provide a tailored proposal within 24 hours. Looking forward to the opportunity to build something impactful together. Best regards, Puru Gupta
$3,000 USD in 30 days
7.2
7.2

With over 15 years of creating and scaling web applications, my team and I are fully committed to delivering high-performance, scalable, and maintainable applications - just what you need for your super-fast app development project. Our expertise in Ruby on Rails, React JS, and API integrations matches perfectly with your requirements. Diving a little deeper into our capabilities, we have extensive experience working with the likes of Supabase, Lovable, and third-party APIs. Our expertise also extends to handling payment systems at scale and implementing robust trade order and payment reconciliation logic - skills that will be critical for creating an efficient backend for your app. Another area where we excel is in constructing migration-friendly architectures. We understand the importance of future-proofing your app and ensuring smooth data transfer when needed. So, allowing your backend, APIs, database, and user data to remain fully under your control beyond Lovable comes naturally to us. Lastly, as a diverse team with a passion for our craft, we embody the entrepreneurial spirit that's essential for successful startups like yours. In conclusion, by picking us for this project you will be gaining a highly experienced team whose commitment and dedication will match yours as we build a rapidly developed app with Lovable, Supabase & Third-party APIs together to make your vision a reality. Let's start building!
$2,900 USD in 10 days
7.0
7.0

Hello! As per your project post, you’re looking to build a Rapid-Development Platform using Lovable, Supabase, and third-party API integrations with a strong focus on trading workflows, reconciliation systems, and cross-border payment infrastructure. The goal is to launch quickly while ensuring the backend, database, APIs, and user data remain fully independent from Lovable for long-term scalability and future migration flexibility. My focus will be on delivering: externally managed Supabase architecture, secure authentication and database setup, API integrations for onboarding, payments, notifications, and trading workflows, payment/deposit handling, reconciliation and settlement logic, admin dashboards, notification systems, and migration-friendly Lovable front-end flows connected through scalable APIs. I specialize in Supabase, fintech workflow systems, API-driven platforms, payment infrastructure, and scalable full-stack architectures with focus on reconciliation accuracy, security, and rapid MVP delivery. My approach will ensure the platform remains production-ready while supporting future standalone app migration without backend dependency on Lovable. Let’s connect to discuss the payment rails and reconciliation complexity involved, and whether the initial launch will focus on a specific region or support multiple currencies and jurisdictions from the beginning. Best regards, Nikita Gupta.
$1,500 USD in 45 days
6.8
6.8

As a long-time app and web developer, my experience aligns seamlessly with your project requirements. I've completed numerous successful projects utilizing the Lovable framework, Supabase backend management, and various API integrations, including those for onboarding, payments, and notifications – just to mention a few. Not to forget, I also possess strong skills in trade order and payment reconciliation, an asset that vitalizes project longevity and security. Where I truly stand out is my drive to provide impressive results with quick turnaround times. Having spent over a decade in the digital market makes me well-acquainted with adapting swiftly to unique client needs and startup environments. Rest assured, not only am I proficient with every aspect of your project scope (setting up Supabase environment, configuring flows, implementing notifications), but I'm also proactive in communication – you won't have to chase me for updates! Furthermore, robust backend architecture is something I specialize in; your mandate for a scalable and migration-friendly construction falls sweetly within my wheelhouse. Plus, on top of the technical capabilities you need (Wordpress/Shopify dev't; Mobile app dev't - Android & iOS / Flutter / Hive / Firebase), my adeptness in design tools like Photoshop and Figma help me ensure a visually pleasing user experience. Let's team up to give your app not just a satisfying structure but an appealing look too!
$1,500 USD in 15 days
6.5
6.5

As a full-stack developer with significant experience in AngularJS and PHP, I understand the critical importance of creating robust, scalable, and efficient systems for your business. What truly sets my team at SoftwareLinkers apart is our ability to not just write code, but to deeply understand your business goals and build solutions accordingly. With this in mind, let's turn our attention to your project requirements such as the Lovable front-end flows, payment/deposit workflows and trade order/payment logic. I have proven expertise in building complex backend architectures that involve trading, reconciliation and cross border payment rails - dealing with similar challenges as what you have outlined. My experience includes developing RESTful APIs for mobile and web platforms, making me ideally equipped to integrate third-party APIs into your app seamlessly. Moreover, it's worth noting that we are practical, fast-moving professionals who are comfortable in startup environments – someone who can show real stake in the project without needing to be chased up for updates. At SoftwareLinkers, we believe in the long-term value of our collaborations which is why high client retention, repeat hires and on-time deliveries are a testament to our dedication.
$2,800 USD in 46 days
6.5
6.5

I have worked on payment reconciliation systems for cross-border trading platforms where keeping user data on independent backends was critical. Setting up Supabase externally and structuring authentication and database for seamless API integration is something I have done in fast-paced projects. For your app, I will start by configuring the Supabase backend with scalable, modular trade order and payment reconciliation workflows. Integrations for onboarding, payments, and notifications will be done with clear separation from Lovable front-end flows, ensuring your full data ownership and easy migration later. A key question: do you have preferred third-party APIs for payments and notifications, or should I recommend stable, widely used options that fit well into this architecture? I’ll keep communication tight with quick updates and will build the platform ready to launch on your timeline while allowing easy future scaling or migration. I’m ready to jump in and start with the Supabase and API setup as soon as you share the details.
$2,250 USD in 7 days
6.0
6.0

As the founder of a mobile app development agency, I understand how crucial it is to have an experienced team that can deliver efficiently on tight timelines. By leveraging my longstanding experience in Supabase, Lovable, APIs, backend architecture and trading, I am uniquely positioned to meet your project needs effectively. Moreover, my expertise in payment flow design and reconciliations will ensure topnotch security and accounting for transactions, payments, and trade orders. Having worked on over 50 app integrations involving APIs, CRMs, payment systems, and more, I've mastered the art of seamlessly incorporating third-party components without sacrificing functionality or security. This level of proficiency is precisely what your project requires in order to migrate cleanly into a standalone app while maintaining complete ownership of your data outside Lovable. Importantly, given the dynamic demands of the startup environment, I'm accustomed to thinking on my feet and delivering results under pressure. My passion for my work compels me to always go above and beyond client expectations which make me an invaluable asset on any project. Empower your trade reconciliation enterprise by partnering with me; together we'll build a fast-moving masterpiece that will impress your users!
$3,000 USD in 20 days
6.3
6.3

You’re clearly trying to avoid the common Lovable trap where the frontend ships fast but the business logic, payment state, and reconciliation end up tightly coupled and painful to migrate later. I’d treat Supabase as the actual source of truth from day one and keep Lovable focused on UI flows only. I’d start by defining the transaction lifecycle first — onboarding, deposits, order states, settlement, reversals, reconciliation — before wiring APIs. In payment and cross-border flows, most issues happen around async failures, duplicate callbacks, partial settlements, or mismatched ledger states, so I’d build idempotent webhook handling and internal reconciliation logs early rather than patching them later. I worked on a transaction-heavy backend recently using Python/PHP integrations where reconciliation accuracy mattered more than UI speed, so I’m comfortable designing around auditability and migration safety. One thing I’d want to clarify upfront is which payment rails/providers you’re planning to integrate, and whether reconciliation is expected near real-time or batch-based. Ready to start immediately.
$1,500 USD in 7 days
5.2
5.2

Hi, With over 15 years in the software industry, I’m Johib, a seasoned developer who's managed and led successful projects from end-to-end, seamlessly. My core strengths lie in efficient coding, performance optimization, scalable architectures, and event-driven systems. As an AI/ML expert, I incorporate intelligent systems for smarter trading decisions; crucial qualities that complement this project's need for trading and reconciliation expertise. Throughout my career I've consistently exhibited adaptability and a practical approach that enables me to understand the constantly evolving demands in fast-paced environments - this aligns perfectly with the nature of your startup project. By masterfully combining my skills in backend development with platforms like Lovable and back-end management with Supabase, I'll ensure we’re delivering on time without sacrificing scalability or functionality.
$2,250 USD in 30 days
5.3
5.3

Hello! This is James from Hollywood, and I'm excited about your project on Rapid App Development with Lovable, Supabase, and APIs. I’ve read your description carefully and believe I’m the right fit for this role. With over 15 years of experience as a senior Full-Stack & AI Engineer, I specialize in building scalable, production-grade applications that are both technically sound and business-oriented. To ensure I fully understand your needs, could you please clarify the following questions to help me better understand the project? 1. What specific functionalities are you expecting from the app? 2. Are there any preferred APIs or third-party services you plan to integrate? I have extensive experience in PHP, JavaScript, and backend development, having successfully completed projects like a custom e-commerce platform and a financial trading app. I am also a member of the Shopify Partners Program since 2016 and have built several Shopify apps and themes. My proposed approach includes clear milestones, proactive communication, and a focus on delivering clean, maintainable code. I genuinely care about the details and am committed to ensuring your project not only meets but exceeds expectations. Let’s discuss how we can bring your app to life!
$2,500 USD in 10 days
5.3
5.3

As an experienced app developer with extensive knowledge in Lovable, Supabase, and API integrations, I believe I'm the ideal candidate for your project. My proficiency in trading, reconciliation, and cross-border payment rails aligns perfectly with your requirements. Throughout my career at Google and Apple, I have tackled tasks similar to what you've outlined: setting up external environments, configuring authentication and database structures, integrating APIs, automating payment and deposit workflows, and more. One aspect that truly differentiates me is my commitment to client-centric development. This means that I don't just build; I prioritize your vision and thoroughly analyze your codebase or requirements before proceeding. This approach minimizes risks and allows me to deliver faster, cleaner, and more scalable solutions. I'll integrate seamlessly with your startup environment -- going the extra mile to ensure real stake in the project. The technical skills I bring to the table are robust; from my expertise in AngularJS and JavaScript to my proficiency in PHP and Ruby on Rails - they all span through the essential components of this project. Should you choose me for this endeavor, you can be assured not only of a versatile skillset but also a reliable communication channel and ongoing support that you will need even after delivering the project. I look forward to discussing further how we can make your app a reality in a fast and efficient manner. Let's get started!
$2,799 USD in 7 days
5.7
5.7

Hey, I reviewed your requirements carefully and understand that the important part here is not only building the app quickly but making sure the backend, APIs, and user data remain fully independent and scalable outside Lovable for future migration. I can help with setting up the external Supabase environment, authentication, database structure, API integrations, payment flows, reconciliation logic, and connecting everything smoothly with Lovable while keeping the architecture clean and flexible. One thing that stood out is the payment and reconciliation workflow, because accuracy there becomes critical when handling transactions and cross-border flows. A few quick questions: • Which payment providers or cross-border rails are planned for the first phase? • Is there already a database structure/workflow planned, or does that need to be designed? • Are there existing API documents available for onboarding and payment services? Looking forward to discussing the details further.
$2,250 USD in 7 days
5.2
5.2

My work style aligns well with the needs of startups - practicality paired with speed, meticulousness with integration, and a consistent commitment to adding value rather than just meeting contractual obligations. As someone who invests themselves deeply in their work, I can guarantee that you won't have to chase me for updates; I understand such dynamics can be project-terminating. When you choose to work with me, you are choosing clarity in communication throughout the project lifecycle, spotless and maintainable code delivered reliably and scalably within timeconstraints. Ultimately, my focus is on building platforms that perform now and in the long run - replacing quick fixes with solutions that optimize performance and conversions. Let's create an app that is truly worth falling in love with.
$3,000 USD in 10 days
4.9
4.9

With a background in AI, Embedded Systems and Backend Development, I am your ideal candidate for this project. My expertise in Supabase, Lovable, as well as API integrations and backend architecture aligns perfectly with your requirements. I have a thorough understanding of payment and transaction flows, trade order, and payment reconciliation - skills that will be highly beneficial to your project. I'm incredibly comfortable working in startup environments and ensuring pragmatic, speedy solutions. I value communication and transparency, so you won't need to chase me for updates - you'll be informed every step of the way. As an engineer who believes in delivering complete solutions, I understand the significance of scalability and migration-friendliness and will design the platform with those aspects in mind. In terms of what I offer: whether it's developing AI-powered products, custom IoT devices, firmware + mobile app integrations or production-ready PCB designs to creating complete hardware-to-app systems, my focus is always on delivering high-quality outputs that make a powerful impact. By choosing me for this project, you're entrusting it to an experienced professional who has repeatedly demonstrated an ability to turn complex ideas into successful realities. Let's build something great together!
$2,750 USD in 60 days
5.4
5.4

With a full-stack expertise in web and mobile app development, I'm well positioned to help you create your cross-platform app with your selected toolsets - Lovable, Supabase and third-party APIs. I have experience in ensuring seamless integration between front-end and back-end systems, including complex API integrations, scalable database structures, and secure payment workflows. Throughout my 7+ years in the industry, I have consistently demonstrated a practical, fast-moving approach to my work. Your project will be no different - I understand the importance of maintaining a speedy timeline and will do what it takes to keep productions running smoothly. As an added advantage, I possess deep knowledge in trading, reconciliation and cross border payments rails. Choosing me means choosing a developer who prioritizes communication upholds high coding standards, thinks beyond generic codes and values precision in meeting deadlines. My ultimate goal is to not just write code but to deliver robust solutions that positively resonate with end-users. Don't hesitate to communicate your needs - let's build something brilliant together!
$2,000 USD in 15 days
4.7
4.7

The real risk here isn’t building screens in Lovable — it’s building payment and reconciliation logic that lives outside Lovable, is audit-ready, and can handle cross‑border settlement quirks (settlement windows, FX, chargebacks, idempotency) without locking you into a frontend platform. I’d deliver a migration-friendly MVP by: provisioning a standalone Supabase project for auth, ledger tables and audit trails; implementing integration services as small, testable functions that handle webhooks, idempotency keys and retries; wiring Lovable to those APIs only for UI flows; and codifying reconciliation rules as scheduled jobs that reconcile orders, settlement events and fees into a single source-of-truth ledger. Recommended stack: Lovable for UI, Supabase (Postgres) for DB/auth, serverless integration layer in TypeScript (Supabase Edge Functions or Vercel) for PSP/webhook logic, Stripe/Adyen or local PSPs depending on rails, and Postgres-based ledger schema with reconciliation jobs (cron/BullMQ). I’ll keep the architecture modular so you can migrate Lovable off later, include automated reconciliation reports, role-based admin tools and monitoring/alerts for failed settlements. Similar work: Tranero — enterprise tax submission platform with API batching, retry handling, RBAC and payment tracking; that experience shaped our reconciliation and retry patterns. Quick question: which payment providers and top 3 countries/rails must we support at launch? If you agree, I’ll share a 7‑day milestone plan.
$2,250 USD in 7 days
4.8
4.8

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