- Hourly: $60.00 - $80.00
- Expert
- Est. time: 1 to 3 months, Not sure
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.
- Fixed price
- Expert
- Est. budget: $1,200.00
Here is what we have so far , a zapier website form that once submitted for a ride request triggers my sms approved twilio number to send me a text with the requested ride info ( lighting fast ) what wouldbe better is Twilio Expert to Build Dispatch Broadcast & Lockout System via Functions & Studio Project Description: We run a local Free community micro courtesy shuttle business utilizing a fleet of 6 gas-powered passenger vans. We need a backend developer to build a text-message-based dispatching system using Twilio Studio, Twilio Functions, and Twilio Sync for data tracking. Core Workflow Required: Web Request Ingestion: Webhook takes ride data (Name, Pickup, Dropoff, Resident Status, Pax count). Active Schedule Check: System checks an internal list of active, on-duty drivers (needs an easy way for me to update weekly schedules or toggles). Simultaneous SMS Broadcast: Send a ride text to only the active drivers on-duty right now. First Responder Wins (Lockout Logic): When a driver replies with a number (e.g., "15"), a Twilio Function checks Twilio Sync. If the ride is still unclaimed, lock it to that driver, store their name and their inputted ETA, and mark the ride as "Claimed". Late drivers must get an automated "Already claimed" text back. Customer Interactive Flow: Trigger a Twilio Studio flow to text the customer: "Your ride is confirmed! [Driver Name] will arrive in [ETA] minutes. Reply CANCEL within 3 minutes if you don't want to wait." Handle customer cancellation loops cleanly. Archival: Push all completed or canceled ride data to a permanent history log. Requirements: Deep experience with Twilio Node.js runtime environments. Proven experience managing race conditions via Twilio Sync Maps/Documents. Ability to build clean, well-commented code so non-technical owners can easily swap out driver lists/phone numbers. Step 2: Prepare Your System Specs (Before the First Call) To keep this fast and budget-friendly, hand developer clean blueprint of your data structure on day one. Have an Excel or Google Sheet ready that maps out exactly what you want tracked: Driver Name Driver Phone Shift Day Start Hour End Hour Status (On/Off Duty) Driver 1 +1727xxxxxxxx Monday 08:00 16:00 Active Driver 2 +1727xxxxxxxx Monday 16:00 23:00 Off-Duty “Can we use Twilio Sync to manage this schedule list, or would it be easier to have the Twilio Function pull this table dynamically from a Google Sheet using the Google Sheets API?” Step 3: Execution and Safeguards the milestone payments based on clear deliverables: Milestone 1 (Setup & Simulation): The developer creates the Twilio Sync environment and proves that if they send two simulate driver texts at the exact same second, one gets the ride and the other gets locked out. Milestone 2 (Studio Integration): The customer text sends successfully with the winning driver's name and ETA, and replying "CANCEL" triggers the cancellation text back to the driver. Milestone 3 (Live Beta Test): I stand on the beach with 2 or 3 of my drivers on a Tuesday afternoon. i hit submit on your webpage, watch the phones drop the texts, claim the ride, and verify the customer workflow. let me know what I missed ?
- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
I have a production-ready React/TypeScript health record web application built with Lovable (AI app builder) that needs to be migrated to professional infrastructure I own before public launch. I also need Claude Code (Anthropic's AI coding CLI) set up so I can continue building features independently after migration without relying on Lovable. This is a one-time migration project with a clear scope and a complete data export already prepared. I need someone experienced, detail-oriented, and trustworthy — this is a health application handling sensitive patient data. What I already have: Vercel Pro account — ready to connect Supabase account — ready to create new project GitHub repository — connected and available Domain: fullycharted.app — DNS access available Complete bulk export ZIP from Lovable Cloud — all tables as CSV/JSON, all storage files, complete supabase/migrations/ folder 2 beta users currently — minimal data to migrate Mac computer for local development setup The application: React/TypeScript frontend with Vite and TailwindCSS Supabase backend — PostgreSQL, Row Level Security, Edge Functions, Storage buckets Supabase Auth for authentication 1,326 automated tests passing Currently hosted on Lovable Cloud fullycharted.app currently points to a separate landing page — needs to point to the full app after migration What I need done: Connect GitHub to my Vercel account and configure build settings for Vite/React and all environment variables Create new Supabase project in my account — run supabase db push using migrations folder, import all table data from CSV/JSON export, re-upload all storage files (lab documents, imaging, diagnostic studies), verify all Row Level Security policies working correctly Configure all environment variables — VITE_SUPABASE_URL, VITE_SUPABASE_PUBLISHABLE_KEY, VITE_ADMIN_EMAIL, and any others currently in Lovable DNS configuration — point fullycharted.app to Vercel, configure www redirect, verify SSL certificate Handle 2 beta user accounts — coordinate password reset timing before DNS cutover Full verification — app loads at fullycharted.app, login works, patient data intact, emergency view works without auth, file uploads work, admin route gated correctly, all 1,326 automated tests pass, RLS verified (no cross-account data access) Claude Code setup on my Mac — install Node.js, install Claude Code CLI, clone repository locally, configure local environment variables, verify app runs locally (npm run dev) and tests pass (npm test), walk me through one simple change so I understand the workflow Documentation and handoff — all environment variables documented, Vercel and Supabase configuration documented, local development workflow documented, GitHub push triggers Vercel deployment confirmed Security requirements: This is a health application. RLS policies must be verified after migration. Patients must only access their own data. Admin route gated to one specific email. Public emergency routes work without exposing other patient data. What I will provide: Access to my Vercel account Access to my Supabase account Complete bulk export ZIP GitHub repository access Domain registrar access for DNS Anthropic API key for Claude Code Quick responses throughout the project Success looks like: fullycharted.app loads the full application Beta users can reset password and log in with all data intact All 1,326 tests passing I own all infrastructure completely Claude Code installed, configured, working Complete documentation in my hands Follow-on work: I have a second application (MySynapse — homeschool platform) on the same stack needing the same migration in 1-2 months. Strong performance here leads to that second project directly. To apply please include: Examples of similar Lovable/managed platform to Vercel migrations Supabase RLS and migration experience Your approach to data integrity verification Confirmation you are comfortable with health app security requirements
- Hourly: $30.00 - $50.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
Job Description: We are looking for a skilled, "under-the-hood" Full-Stack Developer to help build out Lafayette Academy’s online portal. We have clear visual layouts, a working offline prototype, and a live front-end dashboard currently hosted on Vercel. We use AI heavily in our workflow for strategy, logic, and rapid drafting. However, we do not want an AI-only prompt engineer. We need a traditional, foundational developer who understands actual code architecture, databases, and deployment systems. If the AI generates a buggy script, you must have the depth of knowledge to debug it manually and make it work. What You Will Do: Take existing static mockups (HTML/CSS/Next.js components) and integrate them into our live Vercel environment, OR help create new mockups if the ones we have need to be upgraded. Connect user interfaces to a secure database (like Supabase or Firebase) to handle real-time student data. Help bridge our frontend to API endpoints (like OpenAI) to power our live "Personalization Cues" for instructors. Troubleshoot, debug, and optimize existing code when automated tools hit a wall. Our Tech Stack Focus: React / Next.js Vercel Hosting Tailwind CSS Database integration (SQL/Supabase/Firebase) To Apply: Please start your proposal with the words "Under the Hood." This proves you read the description. Tell us briefly about a time you had to manually fix a complex database or code glitch that automated tools couldn't solve.
- Hourly: $55.00 - $80.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
We are seeking an AWS Developer to enhance our web application by integrating AWS services. The ideal candidate will have experience with AWS Lambda, API Gateway, and S3. Responsibilities include designing and implementing scalable solutions, optimizing performance, and ensuring security best practices. The role requires collaboration with our team to identify and implement AWS services that meet our application's needs.
- Hourly: $45.00 - $65.00
- Expert
- Est. time: More than 6 months, 30+ hrs/week
CONFIDENTIAL PROJECT — NDA REQUIRED BEFORE DETAILS ARE SHARED We are a US-based LLC seeking an expert React Native developer with deep Twilio Programmable Voice experience and daily Cursor AI proficiency for a mobile app project on iOS and Android. REQUIREMENTS — Please read carefully before applying: Twilio Programmable Voice expert level only. You must have built real production applications using Twilio Programmable Voice for live call routing, interception, or telephony workflows. SMS or video experience does not qualify. Cursor AI required. You must use Cursor as your primary coding environment daily. This is how we move fast. React Native apps currently live in the App Store and Google Play. Links to published apps required in your proposal. Firebase Cloud Functions deployment experience required. Full time availability — 35 to 40 hours per week preferred. Must sign NDA and IP Assignment Agreement before any project details, files, or designs are shared. All code committed daily to client owned private GitHub repository. Weekly written progress update every Friday without exception. INTERVIEW PROCESS: Shortlisted candidates will answer technical Twilio Programmable Voice questions and complete a paid test task before hiring. TO APPLY — Answer all four questions or your proposal will not be reviewed: Describe 2 projects where you used Twilio Programmable Voice for live call routing or telephony. What did you build? How long have you used Cursor AI and how do you use it daily? Provide links to 2 live React Native apps you built in the App Store or Google Play. What is your availability in hours per week starting immediately?
- Fixed price
- Intermediate
- Est. budget: $1,000.00
In need of a developer to edit a pre-existing database, and be able to deploy the updates to a server with an updated client side installer. We currently need to add some deleted buttons to a tab. Add in filters to a materials list. Fix the user log-ins to were they can change their current password, and or clear the user names from the database entirely. TeamsMeeting, or GoogleMeeting required before hand over. Hourly rate may be required before the full installment of budget is paid, to insure competency of the required job. Hourly rates are negotiable.
- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
Project Overview I have a fully functional React prototype of a proprietary web-based business tool. The prototype has been built, tested, and validated. I need a skilled developer to build the production-ready hosted version. This is a precise execution job. A detailed Developer Brief (provided after NDA) specifies every feature, field, validation rule, output format, and architectural requirement. Your job is to build exactly what is described. The Job The prototype UI is built and working. The primary work is: 1. Replacing local/browser storage with a proper cloud database 2. Building the API layer connecting the UI to the database 3. Implementing the data model, cascade logic, and validation server-side 4. Deploying to a hosted environment at my domain 5. Importing default data at launch 6. Transferring all source code and IP to me This is not a design job. The UI exists. This is a data layer and infrastructure build. Technical Requirements Frontend: React (existing prototype is React/JSX) Backend: REST API or GraphQL connecting to a cloud database Database: Cloud-hosted, persistent (Supabase preferred; alternatives considered) Hosting: Vercel or equivalent (fully documented and transferable to client) Responsive: Desktop and mobile Non-Negotiables No AI features of any kind No third-party analytics, tracking, or data collection No unapproved external dependencies Daily commits to a private GitHub/GitLab repository I own and control — from day one Fixed-price, milestone-driven contract — no hourly billing NDA required before receiving the Developer Brief or prototype IP Assignment Agreement required before work begins All work product belongs to me from the moment it is created What I’m Looking For Strong React experience Solid Supabase or equivalent backend experience Someone who reads specs carefully and builds what is written Clear communicator who flags questions early US-based preferred, but open to others with strong English and relevant experience Proposal Requirements Please submit your proposal with: Your relevant experience (React, Supabase or similar, web app builds) Examples of similar projects Your estimated price range for this type of engagement Your availability and estimated timeline Note: The Developer Brief and prototype are provided only after NDA is signed.
- Hourly: $45.00 - $65.00
- Intermediate
- Est. time: 3 to 6 months, Less than 30 hrs/week
Overview We run an AI voice assistant for self-storage operators. We have an internal, AI-assisted workflow for triaging call feedback — investigating what happened on a call, diagnosing the root cause in our codebase, and drafting fixes. We’re looking for someone technical to run that AI-assisted workflow day to day and help us make it better. You’ll be driving AI coding agents, reading real code to understand behavior, and improving the process and tooling itself. What you’ll do Use our AI agent tooling to work through a queue of customer feedback on AI voice calls. Read our TypeScript/Node codebase (voice-agent prompt assembly, workflow/“SOP” engine, tool implementations) to diagnose why the agent behaved a certain way — not just guess. Draft fixes: workflow-instruction edits, knowledge-base entries, or code changes via pull request with a clear verification plan. Improve the triage process itself — refine the AI agent prompts/skills, conventions, and the internal MCP tooling that powers it. Write clear, customer-facing summaries of what changed for our team to review and approve. You’re a great fit if you Read and reason about code confidently — ideally TypeScript/Node; React a plus. Have hands-on experience driving AI coding agents (Claude Code, Cursor, or similar) and understand how LLM prompts/tools/agents fit together. Think in cause-and-effect: “the agent did X because line Y / instruction Z.” Write precisely and concisely for both technical and non-technical audiences. Are process-minded — you spot the repetitive thing and turn it into a better workflow. Bonus: prompt engineering, LLM tool/agent development, or voice/conversational AI experience. How we work We’ll start with a paid trial on a small batch, then scale steady ongoing volume. To apply: Tell us about a time you used an AI coding agent to diagnose or fix something non-trivial in a codebase you didn’t write — what you did, and how you verified it worked. A link to relevant work is a plus.
- Hourly: $40.00 - $70.00
- Intermediate
- Est. time: Less than 1 month, Less than 30 hrs/week
Need a small realtime data bridge for an interactive music prototype. Goal: Connect Emotiv Cortex API to OSC output for use in SuperCollider. Emotiv has their own BCI OSC add-on, but it does not send all their data streams that we need. Requirements: - Connect to Cortex API - Subscribe to selected streams (frequency bands, performance metrics, facial expressions) - Forward values as OSC messages - Lightweight, realtime - Deliver in a format our composer can connect into and continue working with in SuperCollider No music generation needed — this is transport only. Bonus: Experience with OSC, SuperCollider, realtime media, EEG/BCI.