- Hourly: $15.00 - $100.00
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
We are seeking an experienced developer proficient in FlutterFlow or Bubble to create a mobile app. The ideal candidate will have a strong understanding of no-code or low-code platforms and be able to deliver high-quality solutions efficiently. Responsibilities include designing, developing, and testing the app to ensure it meets our specifications. If you have a passion for innovative app development and a proven track record, we would love to hear from you.
- Hourly: $50.00 - $75.00
- Expert
- Est. time: Less than 1 month, Less than 30 hrs/week
Looking for a Bubble developer to work on a legal-tech app that matches clients with lawyers. The role involves building a user-friendly interface and ensuring seamless functionality. The ideal candidate will have experience in legal-tech applications and be able to start immediately. This is a part-time position with a short-term engagement. Need immediate help with: User authentication and onboarding Client intake forms Lawyer profiles Matching logic Search/filter functionality Stripe payments (if applicable) Database architecture API integrations
- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
Looking for an experienced Bubble.io developer to build a crowdfunding platform MVP from the ground up. Core Features Needed: • User registration and profile creation with email domain restriction • Campaign creation and management • Donation flow with optional donor tip at checkout • Stripe Connect integration for automated payouts • Identity verification integration triggered at payout stage via third party API • Basic admin dashboard for campaign review and approval • Mobile responsive design How Verification Should Work: • Users create campaigns freely • Verification is triggered only once a campaign reaches a minimum funding threshold • Payout is held until verification is confirmed • Verified users receive funds automatically upon confirmation How Tipping Should Work: • Optional tip prompt presented to donor at checkout • Tip amount configurable by admin • Tips collected separately and routed to platform account Requirements: • Strong Bubble.io portfolio with similar platforms • Proven Stripe Connect experience specifically • Experience integrating third party APIs into Bubble • Clean, well documented workflows • Available for post-launch support Project Details: • Scope: MVP only, core functionality listed above • Timeline: 4-6 weeks
- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
I’m looking for an experienced Bubble developer to convert an existing Figma design into a responsive Bubble web app and assist with turning the completed web app into iOS and Android mobile apps using a reliable mobile wrapper or native-wrapper solution. The UI, page flow, and core user journey are already prepared. The work may include building the screens in Bubble, creating reusable elements, setting up responsive layouts, connecting page navigation, and ensuring the finished app closely matches the Figma design across desktop and mobile. The developer may also assist with securely integrating the OpenAI API and other APIs with Bubble, reviewing backend workflows, protecting API keys and sensitive credentials, and advising on RevenueCat and iOS/Android subscription integration. Experience with Bubble mobile wrappers, such as Natively or similar platforms, is preferred. The developer should be able to advise on the best approach for converting the Bubble web app into App Store and Google Play-ready mobile apps, including native mobile functions, in-app purchases, push notifications, and store submission requirements. This project is confidential. The selected freelancer must sign an NDA and Statement of Work before receiving the full Figma file, product details, app access, or credentials. Please include examples of similar Figma-to-Bubble projects and explain your experience with responsive Bubble development, backend workflows, API security, mobile wrappers, RevenueCat, and iOS/Android app deployment.
- Hourly: $30.00 - $55.00
- Expert
- Est. time: 3 to 6 months, Less than 30 hrs/week
We are seeking an experienced Bubble.io developer to help build, maintain, and enhance web applications on an ongoing basis. The ideal candidate has a strong portfolio of Bubble projects, experience with API integrations, database architecture, workflow optimization, and responsive design. We prefer candidates located on the East Coast of the United States to facilitate collaboration during business hours. Strong communication skills, reliability, and the ability to work independently are essential. Please include examples of Bubble applications you've built and describe your role in each project. To confirm you've read this posting, please begin your proposal with the phrase "Bubble Builder" and include links to your Bubble portfolio. The selected contractor must be willing to sign a Confidentiality, Intellectual Property Assignment, and Non-Use Agreement before engagement. This agreement includes provisions regarding confidentiality, ownership of all work product and intellectual property, protection of proprietary technology and business processes, and restrictions on the use or disclosure of confidential information.
- Fixed price
- Intermediate
- Est. budget: $5,000.00
Notion-style CRM (table, board, calendar views) AI proposal builder (Claude API) Client portal with e-signature Commission tracking dashboard Stripe billing (already configured) CSV client import Atlas AI chat assistant Supplier management Trip marketplace Row-level data privacy (each user sees only their own data
- Fixed price
- Intermediate
- Est. budget: $15,000.00
DataSci Technologies, Inc. is an enterprise software C-Corp. We own our domain (datascitechnologies.com) and have finalized our independent institutional asset valuation. We are seeking an elite, Expert-level Full-Stack Product Architect / Fractional CTO to build the V1 / MVP layout of our proprietary predictive AI platform, the DST Codex, from the ground up. The Product & Target Audience: The DST Codex is a secure, high-end portal built specifically for institutional asset management firms and real estate conglomerates managing $250M to $10B+ in AUM [1.1]. The platform maps out, quantifies, and visualizes hidden operational risk metrics—known as "Shadow Variables"—to protect institutional capital. The user interface must look like a premium, dark-mode institutional banking terminal. Required Technical Scope (Full Lifecycle Build):Infrastructure & Security: Secure database architecture setup using AWS or Google Cloud Platform with enterprise-grade encryption. Front-End & Interface: Building a pristine, highly aesthetic, dark-mode responsive dashboard layout (React, Vue, or enterprise visual frameworks like WeWeb/Bubble). The Core Visualization Layer: Engineering interactive, custom open-source data tracking charts (utilizing D3.js or high-performance visualization packages) to map out predictive risk telemetry. User Auth: Airtight, password-protected multi-tenant user authentication and client login portals. Project Structure: We are a capital-efficient C-Corp moving at high velocity. We are looking for an experienced product builder who can act as a long-term technical partner. Please share your portfolio of completed SaaS platforms/dashboards, outline your architectural recommendations, and state your standard fixed-price or monthly fractional structures for a 60-day development milestone sprint.
- Hourly: $30.00 - $75.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
2. The core concept An online marketplace exclusively for verified trading card sellers (sports cards, Pokémon, Magic: The Gathering) to sell directly to buyers. Designed to recreate the feeling of browsing a real card show, online. The two features that make this different from a generic marketplace: Map-based discovery — buyers find shops via a US map with pins, not just a search bar Value box flip experience — buyers browse a seller's box of cards by flipping through them one at a time (card-back reveal, fan animation between cards), with a toggle to switch to a standard grid view Important clarification on value boxes: These are NOT mystery packs / blind boxes. Every card and its price is visible — buyers see exactly what they're getting before buying. The "flip" is purely a browsing interaction, not a gambling mechanic. 3. Business model Sellers pay a flat monthly subscription fee (target: ~$49/month, considering tiers — see below) Zero fees on individual sales — sellers keep 100% of every sale This directly undercuts eBay (13.25%/sale), Whatnot (8%/sale), and COMC (~12% all-in) Sellers are manually verified/approved before they can list — not an open marketplace. This is a core trust/quality signal for buyers. Possible future tiers: Starter ($29/mo), Pro ($49/mo), Elite ($99/mo with featured placement + priority support) — not finalized, flat single tier is fine for MVP 4. User roles Buyer Browse shops via map or category Browse a shop's inventory (flip view or grid view) Search by player, team, set Filter by price and category Save/watchlist cards Follow shops to get drop notifications Make an offer or buy now Message sellers directly Seller (verified/approved only) Apply for an account, gets manually approved Dashboard with stats: active listings, monthly sales total, open offers, follower count Upload cards via guided flow: photo → AI auto-detect details → review/edit → set price → publish Option to add a listing to a "value box" grouping or list it standalone Build and publish "drop announcements" (title, date/time, teaser text) that notify all followers Manage/respond to offers and messages Edit or delete listings Easy way for sellers to print off shipping labels. Option where sellers can put a description on each card, or just like in real life, no description needed and can put a price on the card with a photo and that’s it. Can be an option where you upload all the photos and every card in the “box” is $ per card. Easy and fast way to sell just like in real life at a card show. Jump to the top of the homepage. Different payment options for that. US map (accurate state borders, not abstract shapes) with shop pins If US map is too difficult to start with then just the seller's logo with a picture of a value box below it. Pins color-coded by category (sports / Pokémon / MTG / multi-category) Click or hover a pin shows a tooltip: shop name, city, specialty, listing count Drop announcement banners/strip at top (horizontally scrollable) Search bar (player/team/set/shop name) Category browse tiles at the bottom (Sports, Pokémon, MTG, Graded) Stats bar: total shops, total listings, live drops Shop profile / Value box browsing screen Shop header: avatar, name, city, specialty, verified badge Category tabs to filter that shop's inventory Search input + price filter dropdown + category filter dropdown Toggle between Flip view and Grid view Flip view: card stack visual (depth effect with cards behind), tap/click to flip the active card from back (VB-branded) to front (player name, set, price, condition badge, grade). Prev/next navigation with a "fan" animation. Action buttons: Buy Now, Make Offer, Save, Message Seller. Card metadata panel: condition, year, category, seller. Maybe kind of like flipping through photos on a dating app. Grid view: standard 3-4 column card grid, each card shows image/emoji, name, set, price, save heart icon Seller booth (dashboard) Header: shop avatar, name, city, verified badge, current plan/subscription status Stats row: active listings, monthly sales $, open offers, followers Drop announcement builder: title input, date picker, time picker, teaser text input, live preview of how it'll look to buyers, publish button Active listings list: thumbnail, name, meta info, price, status (Live / Offer Pending / Draft), edit/delete buttons "Add listing" button/flow: Step 1: Upload photo (camera, photo library, or bulk upload option) Step 2: AI-detected fields shown (player, year, set, grade) — powered by CollX API — with confidence score, all fields editable. Future possibility!!! Step 3: Set price, shown alongside a market price suggestion/range from CollX, toggle to add to a value box, category/team fields. Future possibility!!! Step 4: Publish (or save as draft) Step indicator showing progress through the 4-step upload flow Also needed but not yet prototyped (describe verbally / sketch if needed): Messaging/chat interface (buyer-seller threads) Offer management screen (accept/decline/counter) Watchlist screen Seller application/verification form (for new sellers applying) Buyer account settings Checkout flow (if handling payment processing for purchases, vs. just facilitating contact between buyer/seller) 6. Core functionality / logic needed User authentication with two roles (buyer / seller) Seller application + manual approval workflow (not self-serve signup) Database relationships: Users → Shops → Listings → Value Boxes; Listings ↔ Offers; Listings ↔ Messages; Shops ↔ Followers; Users ↔ Watchlist Stripe integration for recurring subscription billing (not one-time payments) Search/filter logic across multiple fields (text search + category + price range) Notification system: in-app + email when a followed shop posts a drop Map integration with custom pin placement (real lat/long coordinates, not abstract positions) Image upload and storage for card photos (Phase 2 / nice-to-have) CollX API integration for AI card detection from photos 7. Tech stack — open to recommendation, but my research points to: App builder: Bubble.io (no-code, but open to alternatives like Sharetribe or custom code if developer recommends and price works) Payments: Stripe (subscriptions) Maps: Google Maps API or Mapbox Email: Klaviyo or similar Card AI/pricing data: CollX API (Phase 2) Photo storage: Cloudinary or similar Eventual native app: Open to wrapping the web app via Median.co for App Store/Google Play once validated, rather than building native from day one 8. What I'm bringing to this meeting 3 fully interactive HTML/CSS/JS prototype files (every screen above, functional in any browser). Really don’t understand this part. Full written concept brief (features, screens, budget guidance, tech stack reasoning) Seller-facing pitch document (fee comparison math, used for recruiting sellers — shows the business model is thought through) Brand colors, fonts, and the "VB" mark already defined Domain + LLC already in place 9. Budget & timeline expectations Budget: $2,500–$4,500 for MVP (open to discussing fixed price vs. hourly) Timeline: No hard deadline, prioritizing finding the right developer over speed Phased approach preferred: Core features first (accounts, listings, map, Stripe subscriptions), flip animation and AI upload can follow as a second phase if needed to stay in budget 10. Questions I want to ask THEM in this meeting Have you built a marketplace with buyer/seller roles before? Can I see it? Have you integrated Stripe subscriptions (recurring) specifically, not just one-time checkout? How would you handle the map with custom pins — which tool/plugin, and have you done this before? How would you replicate the card flip + fan animation inside [chosen platform]? Is custom embedded code needed? What about the map idea? What's your recommended database structure for this, and does it match what I've outlined above? Will I be able to log in and manage/edit the app myself after you hand it off, or will I need you for every change? What's not included in your quote that I should expect to pay for separately (plugins, API costs, hosting)? What's your estimated timeline for an MVP with this scope? I need something that can be built and tested out for seller and buyers to use.