- Fixed price
- Intermediate
- Est. budget: $5,000.00
About the Business I own Meet U @ The Net, an established beach volleyball league in Southern California. Website: https://meetuatthe.net The league currently runs multiple seasons per year, has strong player retention, and regularly reaches registration capacity. I am looking for a developer or small team to help modernize the business systems while providing documentation and knowledge transfer so I can eventually manage and improve the platform myself. This is not a one-time project. I intend to build the platform in phases over multiple seasons. Phase 1 Goals CRM Foundation Current data exists across: Excel Airtable Google Sheets The goal is to consolidate historical league data into a single CRM/database. Examples: Players Teams Seasons Registrations Waitlists Payments Participation history Website Rebuild Build a modern website focused on: Registrations League information Schedules Standings FAQ Mobile responsiveness SEO foundation AEO foundation Registration System Support: Individual registrations Team registrations Waitlists Coupon codes Discount codes Payment tracking Waiver System Requirements: Team captains can register teams Individual players must create their own profile Individual players must sign their own waiver Waiver tracking and status management Knowledge Transfer (Required) I do not want a black-box system. I want: Written documentation Loom walkthrough videos Live walkthrough sessions Ability to ask questions after launch The goal is to learn how the system works while it is being built. Future Phases (Not Part of Phase 1) Future projects may include: Scheduling tools Referee score entry portal Automatic standings Sponsorship CRM AI features Mobile applications The initial focus is building a strong foundation. Preferred Technologies Open to recommendations. Currently interested in: Next.js Supabase OpenAI GitHub Budget Approximately: $5,000 – $7,000 for Phase 1 Future phases expected if Phase 1 is successful. Looking For Full-stack developer or small team CRM/database experience SaaS experience Strong communication Documentation-focused Comfortable working with non-technical founders Please send: Relevant projects Technologies used Availability Pricing model Examples of documentation or client training
- Hourly: $25.00 - $75.00
- Intermediate
- Est. time: 1 to 3 months, Not sure
We’re seeking a full-stack developer to help build a SaaS MVP using TypeScript and Next.js. The platform will center around a PostgreSQL-backed system with user authentication, role-based access control, asset tracking, inspection logging, and photo upload functionality. This is a data-driven product, so experience designing clean, scalable database structures and building reliable backend workflows is important. As part of the initial phase, we plan to launch a beta using Airtable to validate workflows and refine the data model before transitioning to a fully custom build. Experience working with Airtable or integrating it into early-stage products is a strong plus. We’re looking for someone who has solid experience with TypeScript and Next.js, can move efficiently, and is comfortable working on an evolving product. The goal is to have a functional MVP completed within the next three months. This isn't a hard deadline, if our goal is ambitious let us know and we can discuss.
- Hourly: $70.00 - $90.00
- Expert
- Est. time: 3 to 6 months, Less than 30 hrs/week
Contract Full Stack Engineer – Manufacturing Data Platform Development Overview We are seeking an experienced full stack software engineer to design and implement a cloud-based manufacturing data platform to support device production testing, quality tracking, and manufacturing analytics. Our current manufacturing test workflow uses a Windows-based test application that logs production test data into Google Sheets. As we scale production and introduce contract manufacturing, we are transitioning to a structured cloud database architecture using Supabase and PostgreSQL. The contractor will be responsible for establishing the backend data infrastructure, assisting with integrating existing manufacturing test software with the new platform, and developing flexible data visualization and analytics tools for engineering and manufacturing teams. This is an opportunity to build a foundational manufacturing data system that will support production scaling, quality improvements, and future automation. Scope of Work 1. Database Architecture & Supabase Implementation Design and implement a production-ready database architecture using: Supabase PostgreSQL REST APIs Cloud-based authentication and security Responsibilities include: Define database schema for manufacturing test data Create tables and relationships for: - Device serial numbers - Production lots - Firmware versions - Hardware revisions - Test results - Calibration data - Operator information - Failure codes - Manufacturing history - Implement database indexing and optimization - Establish backup and data retention strategies - Configure user access permissions for internal teams and manufacturing partners 2. Manufacturing Test Software Integration Our existing Windows test application currently performs device testing and uploads results to Google Sheets. The contractor will: -Assist team members with replacing Google Sheets API integration with database/API integration -Develop secure REST API endpoints -Integrate authentication between the test application and backend -Design reliable data upload workflows -Handle offline operation and data synchronization considerations -Ensure robust error handling and logging Preferred experience: -C# / .NET desktop applications (current data gathering tools) -REST API development -Cloud database integration 3. Manufacturing Dashboard & Data Analytics Platform -Develop an intuitive interface for engineering, manufacturing, and quality teams. The platform should provide: High-Level Production Dashboards Examples: -Units tested per day/week/month -Production throughput -Pass/fail rates -First pass yield -Failure trends -Failure Analysis Tools Ability to analyze: -Failure categories -Failed test steps -Firmware correlation -Hardware revision correlation -Production lot trends -Time-based trends -Flexible Data Exploration The system should provide spreadsheet-like flexibility similar to Google Sheets pivot tables. Desired capabilities: -Dynamic filtering -Sorting -Grouping -Pivot-style summaries -Custom reports -Export capability (CSV/Excel) -User-defined views The implementation can be: -Web application -Desktop Windows application -Hybrid solution The priority is flexibility, maintainability, and ease of use by engineering teams. Technical Requirements Required experience: -PostgreSQL database design -Supabase platform experience -REST API development -Full stack application development -Data visualization/dashboard development -Cloud application architecture -Authentication and user management Preferred experience: -Quality systems -Production test software -Electronics manufacturing data -Statistical process control (SPC) -Yield analysis Preferred Technology Experience Backend: -PostgreSQL -Supabase -REST APIs -Python, Node.js, C#, or similar backend technologies Frontend: -React / Next.js -TypeScript -Dashboard frameworks -Data visualization libraries Desktop (optional): -C#/.NET -WPF -WinUI Analytics: -SQL reporting -Data aggregation -Pivot-style analysis tools Deliverables Phase 1 – Database Foundation -Supabase project setup -Database schema -Authentication system -API architecture documentation Phase 2 – Test Software Integration -Updated Windows tester integration -Data upload API -Error handling -Production validation Phase 3 – Manufacturing Dashboard -Production overview dashboard -Yield reporting -Failure analysis interface -Flexible data exploration tools Phase 4 – Documentation & Handoff -Database documentation -API documentation -Deployment instructions -Training for internal engineering team Contract position: Estimated duration: 3–6 months initially -Potential for ongoing support as manufacturing systems expand -Remote acceptable Ideal candidate: -Independent engineer comfortable owning architecture decisions -Able to work directly with engineering leadership -Comfortable building an initial system quickly while maintaining long-term scalability About the Product We are developing a battery-powered consumer electronics device transitioning from engineering prototypes into scaled manufacturing. The manufacturing data platform will become a critical component of our production infrastructure, supporting internal engineering teams and external manufacturing partners.
- Hourly: $15.00 - $30.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
Seeking a React developer to finalize and optimize an existing website, ensuring visual perfection and proper functionality. Role-based access, license verification, payment flows. Full NDA required. Tasks and Deliverables (in phases, this is a large platform) Phase 1 (Foundation): GitHub Private organization set up, Node.js+Express backend initialized, deployed to Railway, ProstgreSQL database via Supabase (full schema) with initial schema Role A and Role B separated, value_items table, Role-B_categories table, Authentication system (email, password registration and login, role– based access control (Role A vs Role B), JWT session management, protected routes), sections, Environment Variables (stripe keys, anthropic key, sendgrid, twilio, database url-all in Railway’s env configuration (never in code), Core API routes stubbed and returning test responses /auth, /RoleA, /RoleB, /XYZ, /admin, JWT authentication middleware signup, login, token validation, role separation (RoleA vs RoleB vs admin), Admin panel backend with protected routes for RoleB approval, card charge trigger, user management, Stripe backend integration (subscription creation, webhook endpoin, RoleB setup intent, charge trigger. Phase 2 (Payments) - will drop here once Phase 1 is done. Phase 3 (Core Role-A Sections of Platform) Phase 4 (Live Data Integrations) Phase 5 (Remaining Role-A Sections of Platform) Phase 6 (Role-B Sections) Phase 7 (Polish QA, Launch Prep) Required Experience - Required: comfortable with React18, TypeScript, Node.js/Express, PostgreSQL, Stripe API (subscriptions, setup intents, webhooks), third-party API integration (Anthropic, NURSYS, Numbeo or BLS, SendGrid, Twilio), and Vercel/Railway deployment. A live portfolio of deployed full stack applications with real API integrations is required to be considered.
- Hourly: $50.00 - $95.00
- Expert
- Est. time: More than 6 months, Less than 30 hrs/week
We're a fast-moving company with a strong in-house backend team looking to add a dedicated frontend developer on a retainer basis. This is not a one-off gig, we need someone available, responsive, and able to execute quickly when projects move. We're expanding our dev capacity and want to bring on someone who is hands-on, communicative, and fully present on every project they take on. Direct collaboration with our internal team is essential, we move fast and need someone who moves with us. WHAT YOU'LL BE DOING: Working directly alongside our in-house backend developers, design team, and marketing team to build and maintain web interfaces, implement designs, and ship features quickly. You'll own the frontend layer completely. WHAT WE NEED YOU TO KNOW COLD: - Tailwind CSS — this is non-negotiable, it's our primary styling approach - React and TypeScript — you should be writing this daily - Laravel — familiarity required, it's a core part of our backend stack - Astro — familiarity expected, you'll encounter it in our stack - Clean, responsive UI implementation with an eye for detail WHAT WE'RE LOOKING FOR: - Someone who writes their own code and takes full ownership of their work - Strong availability during US business hours - Fast turnaround without cutting corners - Clear, proactive communication throughout every project TO APPLY, PLEASE INCLUDE: - Your portfolio or GitHub link - 2–3 examples of projects built with Tailwind + React - A short note on your availability and how you handle tight deadlines
- Hourly: $50.00 - $80.00
- Intermediate
- Est. time: 1 to 3 months, 30+ hrs/week
Title: React Developer — CRM Integration (Freelance / Contract) We're looking for an experienced React developer to help finalize a custom-built CRM for a creative services company. The app is already live and functional — we need help integrating third-party APIs including Pipedrive, Google Workspace (Gmail, Drive, Calendar), JustCall.io, and Markup.io, plus wiring up AI tools (Gemini, Gamma.app). Stack: React, Vite, Tailwind CSS, Base44 (BaaS), Deno backend functions What you'll do: - Connect OAuth-based integrations (Google, Pipedrive, JustCall) - Build automated email/workflow triggers via backend functions - Polish UI components and fix edge-case bugs Ideal candidate: 3–5 yrs React experience, comfortable with REST APIs and OAuth flows, bonus if you've worked with Pipedrive or Google Workspace APIs. Estimated: 60–100 hrs | Milestone-basedThis is a part-time engagement for 1 to 3 months. Freelancer Project Brief — Flyer View Group CRM Project Overview Flyer View Group is a geospatial marketing firm that produces custom murals, posters, story maps, and dynamic map programs for commercial real estate and economic development clients. We have a custom-built internal CRM (built on Base44, a React + Vite + cloud-backend platform) that manages the full lifecycle of prospects, deals, contacts, organizations, and projects. We need an experienced freelance full-stack developer to: Complete and stabilize all existing CRM functionality (described below) Wire up live integrations with our third-party tool stack Deploy and test the system so it's production-ready for daily use by a small team What's Already Built The CRM currently includes: Dashboard — activity summaries, pipeline metrics, revenue charts Prospecting — outreach tracking with AI-assisted qualification Contacts & Organizations — tabbed detail slide-over panels, quick actions Pipeline — Kanban-style deal board with stage drag-and-drop Projects — grid/list views with Pipedrive-style project cards, stage transitions, subscription tracking Activities/Tasks — logging, scheduling, assignments, priority tracking Mail page — stub ready for email integration Backend functions — deal-to-project conversion, proof tracker, subscription renewal alerts, outreach automation stubs AI Assistant — global sidebar AI agent (Base44 in-app agent) Work Required 1. Polish & Wire Up Internal Functionality Fix any broken UI states, edge cases, or incomplete components Ensure all entity relationships (Deal → Project → Contact → Org) work end-to-end Complete the proof versioning workflow (version bump → task creation → notification) Finalize subscription renewal alert automation (60/30 day triggers) Ensure all slide-over detail panels are fully functional with edit/save/delete 2. Third-Party Integrations Service Integration Goal Google Workspace (Drive, Gmail, Calendar, Docs) Auto-link Drive folders per project; log emails as activities; sync calendar events to Activities; create Docs from project templates Pipedrive Two-way sync of Deals, Contacts, and Organizations via Pipedrive REST API; map CRM stages to Pipedrive pipeline stages Markup.io Embed or deep-link Markup.io review sessions to project proof records; store review URLs on the Project entity JustCall.io Click-to-call from Contact/Prospect records; log inbound/outbound calls as Activities automatically via JustCall webhook Gemini (Google AI) Power AI-assisted prospect qualification scoring, outreach message generation, and project notes summarization via Gemini API Gamma.app Store and display Gamma presentation links per project (partially built); add ability to generate a Gamma link stub from within the project record app.atlas.co Store and display Atlas map links per project; integrate link management into project detail panel 3. Automation Wiring Connect existing backend function stubs to real API calls Set up and test all Base44 automations (entity triggers + scheduled tasks) Ensure webhook endpoints are secured and validated 4. Testing & Documentation End-to-end QA of all workflows Document integration setup steps (API keys, webhook URLs, OAuth scopes) Provide a brief handoff guide Required Qualifications Must Have: 3+ years of React development (hooks, React Query, component architecture) Experience with REST API integrations and OAuth 2.0 flows Familiarity with webhook-based event handling Strong JavaScript/TypeScript skills Experience integrating Google Workspace APIs (Drive, Gmail, Calendar) Ability to read and work within an existing codebase without rewriting everything Nice to Have: Prior experience with Pipedrive API or similar CRM APIs Experience with Base44 or similar BaaS platforms (Supabase, Firebase) Familiarity with JustCall, Markup.io, or annotation/review tools Experience with Gemini / Google AI Studio APIs UI/UX sensibility to maintain the existing dark, premium SaaS design system Tech Stack Document Frontend Layer Technology Framework React 18 (Vite) Routing React Router v6 State / Data Fetching TanStack React Query v5 Styling Tailwind CSS v3 Component Library shadcn/ui (Radix UI primitives) Icons Lucide React Animations Framer Motion Charts Recharts Drag & Drop @hello-pangea/dnd Forms React Hook Form + Zod Date Utilities date-fns Backend / Platform Layer Technology Platform Base44 (BaaS — database, auth, functions, agents) Backend Functions Deno Deploy (TypeScript/JS serverless handlers) Database Base44 managed NoSQL (entity-based schema) Auth Base44 Auth (JWT, Google OAuth, email/OTP) File Storage Base44 Storage (public + private file URLs) AI / LLM Base44 InvokeLLM (OpenAI GPT-4o-mini default; Gemini configurable) In-App Agent Base44 Agent SDK (chat UI + tool permissions) Automations Base44 Automations (scheduled, entity-triggered, connector webhooks) Integrations Required Service Auth Method API Type Google Workspace (Drive, Gmail, Calendar, Docs) OAuth 2.0 (Base44 Google connector) REST + Webhooks Pipedrive API Token / OAuth REST Markup.io API Key REST JustCall.io API Key + Webhooks REST + Webhooks Google Gemini API Key (Google AI Studio) REST Gamma.app Manual URL (no public API) Deep Link app.atlas.co Manual URL / API Key (if available) REST / Deep Link Infrastructure Notes All backend logic runs as Deno serverless functions — no Node.js, no Docker Secrets/API keys stored as Base44 environment variables (never in source code) No separate database or hosting needed — Base44 handles all of it The codebase is a single React SPA deployed via Base44's hosting Deliverables Fully functional CRM with all existing features working Live integrations for all 7 services listed above All Base44 automations configured and tested API key / webhook setup documentation Handoff notes for ongoing maintenance Estimated Scope ~80–120 hours depending on experience level with the tools involved. Fixed-price bids preferred with milestones. Please include examples of prior CRM integrations or API work in your proposal. Platform: Base44 (base44.com) — Freelancer must be comfortable reading existing React/Deno code and working within the Base44 ecosystem. A 1-hour paid discovery call is required before work begins.
- Hourly: $35.00 - $60.00
- Intermediate
- Est. time: Less than 1 month, Less than 30 hrs/week
Project Overview I’m launching a multi‑product SaaS platform and need a UI Finisher who can jump into an existing Next.js + Tailwind + shadcn/ui codebase and deliver pixel‑perfect UI updates based on Base44 designs. This is a precision frontend implementation role — not design, not full‑stack, not a rebuild. You’ll be working directly in the codebase to finalize hero sections, pricing cards, routing behavior, and OAuth UI polish. What You’ll Work On • Pixel‑perfect hero section implementation • Pricing card layout + responsive behavior • Navigation + product domain routing fixes • OAuth button + callback UI polish • shadcn/ui component cleanup (spacing, variants, tokens) • Matching Base44 designs exactly Tech Stack Requirements • React • Next.js (App Router) • Tailwind CSS • shadcn/ui • TypeScript Nice to Have • Experience with Base44 or similar design systems • Strong eye for detail + responsive polish • Ability to work fast in tight iteration loops Deliverables • Hero parity • Pricing card alignment • Routing corrections • OAuth callback polish • Component cleanup Timeline Immediate start. Estimated 6–12 hours of work for the right person. To Apply, Answer These 3 Questions Share a link to a project where you implemented UI in Next.js + Tailwind + shadcn/ui. What’s your workflow for achieving pixel‑perfect fidelity from Figma/Base44? How many hours do you estimate for the scope above?
- Fixed price
- Expert
- Est. budget: $350.00
Developer needed to launch a family organizer app (backend + accounts) Short version I’ve already built a working prototype of a family management app. It looks and behaves the way I want. What it can’t do yet is the “behind the scenes” part: save information in one shared place so every family member sees the same thing on their own phone, let each person log in, and send reminder notifications. I need a developer to build that part and get the app live so my family can actually use it on our phones. One thing that matters a lot to me, please read carefully: after you finish, I need to be able to keep changing and improving the app myself, working with an AI assistant — without having to hire or contact anyone again. So everything you build has to be handed over to me completely, written cleanly and simply, and explained well enough that an AI assistant can understand it and help me make future edits. No locked-down systems, no “only I can touch this” setups, no surprise dependencies. I own all of it. What the app is It’s a private organizer for my household (two parents, six kids). It has five sections: • Today — a daily summary for each person (their schedule, their tasks, family meal/afternoon plans). • Schedule — a weekly calendar: who’s driving which kid to which school, each parent’s work day and hours, kids’ activities, meal and afternoon plans. • Chores — daily and weekly tasks you can assign to specific people, and check off when done. • Lists — grocery and supply lists. • Tonight — an evening summary of chores that still aren’t finished. The look, layout, colors, and how everything behaves are already done. I’m not asking you to design anything. I’m asking you to make it real and shared. What I need you to build 1. One shared place to store our information (the part it’s missing most). Right now, anything I type only saves on the device I typed it on. My wife’s phone and the kids’ devices don’t see it. I need all our information kept in one shared online location so that when anyone makes a change, everyone else’s device updates too, within a few seconds. 2. A login for each family member. Simple and family-friendly: you open the app, tap your name from a list, and type a PIN. Once you’ve logged in on your own phone, it should keep you logged in so you don’t have to do it every time. Every person — both parents and all six kids — gets their own login. Parents can edit everything; kids mainly see their own stuff and check off their own chores. The app already has a built-in “who’s using this” concept; your login system just needs to drive it for real. 3. Notifications to people’s phones. • Every morning, each person gets a notification with their summary for the day. • Every evening at 8:00 PM, each person gets a reminder of any chores they haven’t finished that day. The app already knows exactly what each of those messages should say — I just need them actually delivered to phones on schedule. 4. Shared photo proof for kids’ chores. When a kid marks a chore done, the app already makes them take a photo as proof. Right now that photo is stuck on the kid’s device. I need those photos saved in our shared location so my wife and I can see them from our own phones. What “done” looks like • My family can install or open the app on our phones and each log in with our name and PIN. • A change one person makes shows up on everyone else’s device. • Morning summaries and 8:00 PM chore reminders arrive as phone notifications. • Kids’ chore photos are visible to the parents on their own devices. • It runs reliably without me needing to babysit it. Very important: I need to be able to maintain it myself afterward I work on this app with an AI assistant, and I plan to keep improving it that way for a long time. So I’m asking that you: • Hand over everything — all the code, all the accounts and passwords, all the settings — in my name, owned by me. Nothing stays under your account. • Write it cleanly and simply. Please don’t over-complicate it or add tools and layers that aren’t truly needed. The simpler and more standard it is, the easier it is for me and an AI assistant to understand and change later. • Comment and document it in plain terms: what each part does, where things live, and how to make common changes (like adding a person, changing a notification time, or adjusting a list). • Write a short “how it works” guide for a non-developer — how to find things, how to change them safely, and how to undo a mistake. • Avoid lock-in. Use widely used, well-known building blocks (the kind an AI assistant will already understand), not anything obscure or proprietary that only you would know how to maintain. • Do a handoff call or video walking me through it so I’m comfortable taking it from there. If anything about how it’s built would make it hard for me to edit later on my own, please tell me up front. To apply, please tell me • A short note, in plain English, on how you’d approach this — especially how you’ll keep it simple and easy for me to maintain myself afterward. • Whether you’d build it so it works on iPhones and Android (and whether that’s a website-style app or an installable app — explain the trade-offs simply). • A rough estimate of cost and timeline. • One or two examples of similar things you’ve built. A few notes • This is a private app for my family only — not something I’m selling. It doesn’t need to handle thousands of users, just the eight of us. • Privacy matters: it includes my kids’ photos and our daily whereabouts, so it needs to be kept private and secure. • I already have the full working front end (the part you see and tap). I’ll share it with the right person. You’re building the engine behind it and getting it onto our phones.
- Fixed price
- Intermediate
- Est. budget: $2,800.00
MEMBER LOGIN PORTAL & ADMIN DASHBOARD WELLNESS CHECK-IN PLATFORM ABOUT UGOOD This s a wellness check-in platform WHAT WE NEED BUILT We are looking for an experienced full-stack developer to build two connected pieces: 1. MEMBER LOGIN PORTAL A secure member-facing portal accessible from a "Member Login" button on our website where members can: - Log in with a username and password - View and edit their own account information only - Update their identified members (accountability buddies), check-in time, check-in day, name, email, phone, and timezone - Add or remove buddies with automatic opt-in text sent via Twilio and email confirmation sent from a designated email - Reset a forgotten password - Manage their billing through Stripe's secure hosted page - All changes must sync in real time to our existing Airtable base without disrupting current check-in automations 2. ADMIN DASHBOARD A separate secure login for the Admin team that includes: - Member overview showing all members with status (active, paused, inactive, cancelled) - Ability to add, remove, and pause members directly - Check-in monitoring showing who responded, who didn't, and when escalations were triggered - Three-tier escalation visibility showing opt-in status for each tier - Crisis flag system that automatically surfaces members who go silent for three check-in rotations in a row - Billing overview showing each member's current payment status pulled live from Stripe TECH STACK Our existing system runs on: - Airtable (member database) - Twilio (SMS check-in automation) - Stripe (billing and payments) - Modal (backend infrastructure) - Supabase will be needed for member login authentication — setup and handover included in scope DELIVERABLES - Fully functional member login portal live on ugoodreachout.com - Fully functional admin dashboard accessible to the team - All infrastructure handed over to UGOOD on completion - Recorded walkthrough video showing both systems working end to end - 14 days of post-launch support TIMELINE We are looking for completion within approximately 24 days of project kickoff: - Days 0-3: Access and setup - Days 4-10: Member portal build - Days 11-18: Admin dashboard build - Days 19-21: Review and tweaks - Days 22-24: Go live and handover CANDIDATE - Strong experience with Supabase authentication and database management - Proven experience integrating Stripe, Twilio, and Airtable - Comfortable working with Modal for backend infrastructure - Experience building secure member portals and admin dashboards - Clear communicator with a track record of clean handovers - Portfolio showing similar builds preferred COMMUNICATION REQUIREMENTS: At minimum, a weekly check-in call throughout the duration of the project (15-45 minutes) , and remain open to all additional communication necessary for project clarity and successful completion.
- Hourly: $35.00 - $60.00
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
## Project at a Glance - Project stage: Partially built; bootstrapped project where efficiency, speed, cost, and lean execution matter. - Expected project duration: Approximately 1 to 2 months. - Engagement type: Independent contractor / hourly engagement only. - Scale target: The app should be architected with future growth in mind, including a target capacity of 80,000+ monthly active users with reasonable headroom to scale without avoidable rework, security degradation, or performance issues. - Security posture: SOC 2 readiness should be considered from day one; certification may occur later. - Meetings: One weekly video sync of up to 60 minutes may be scheduled by mutual agreement and should be accounted for in the contractor’s proposed budget. ## Overview We are building a production-grade, multi-tenant SaaS web application designed for enterprise-level scale, security, and reliability. The application may handle employee data and is being built with SOC 2 readiness in mind from day one. This is a bootstrapped project. Speed and lean execution are critical, and every decision should balance quality with pragmatism. The product is being designed to last, scale, and withstand technical, security, and operational scrutiny. We are seeking a U.S.-based individual senior full-stack engineer who can personally lead the web app development scope through production-ready implementation, end to end. No outsourcing outside the U.S. No agencies. ## Technology Stack - Front-end: Next.js App Router, TypeScript, Tailwind CSS - Backend / API: Next.js API Routes, Supabase Edge Functions, FastAPI / Python - Database: Supabase PostgreSQL - Authentication: Supabase Auth, OAuth, SSO, MFA - Authorization: RLS / Row-Level Security, RBAC - Realtime: Supabase Realtime - LLM / AI: OpenAI / Anthropic / Gemini-compatible LLMs - Billing: Polar.sh - HRIS Integration: Unified third-party connector - Email Delivery: Resend - Analytics: PostHog - Error Monitoring: Sentry - Infrastructure: Vercel + Supabase - CI/CD: GitHub Actions - Testing: Vitest / Jest, Playwright - AI Agents: Agentic workflows, tool use, and related architecture - MCP Integrations: MCPs for ChatGPT, Claude, Gemini, or similar environments - Additional technologies may be used. ## What We Are Looking For - Experienced full-stack SaaS product engineer with a strong, verifiable portfolio - Deep expertise in Next.js and TypeScript - Production-grade Supabase experience, including RLS, Realtime, and Edge Functions - Python back-end development experience with LLM integration, including RAG pipelines, memory, or fine-tuning workflows - Experience implementing subscription lifecycle flows and seat-based access control end to end - A genuine standard for clean, well-organized, maintainable code - Demonstrated ability to design systems that can scale horizontally without structural rework - Demonstrated ability to work efficiently in a lean, bootstrapped environment - Security-first development practices, especially when handling sensitive or regulated data - Clear, prompt professional communication - Experience building AI agents or agentic workflows - Experience building MCP integrations for ChatGPT, Claude, Gemini, or similar platforms - Experience designing hierarchical multi-tenant account structures with seat-based access control ## Strongly Preferred - Hands-on experience building RAG pipelines and LLM fine-tuning workflows in production - Experience handling employee or HR data, including PII access controls, audit trails, and data residency considerations - Experience building toward SOC 2 readiness in a prior engagement - HRIS or enterprise HR system integration experience - Familiarity with OWASP, NIST CSF, or CIS Controls ## This application is being built to last and may handle sensitive employee data. We are looking for an engineer who takes code quality, data responsibility, lean execution, and long-term system health seriously. ## Please answer all 5 screening questions in your response. ## Communication - Contractor should identify normal availability windows and provide timely responses, generally within one business day during those agreed availability windows. - Day-to-day communication will generally be async through the applicable platform or contract workroom. - One weekly video sync of up to 60 minutes may be scheduled by mutual agreement for status updates, completed-work summaries, blockers, and upcoming priorities. Contractor should account for this meeting time in the proposed hourly rate or budget. - Pre-engagement sales, proposal, or introductory scoping discussions are not billable. ## Confidentiality and IP Project details are shared only after the client’s NDA is executed. If both parties decide to move forward, a separate IP Assignment Agreement is required before any offer is accepted or substantive work begins. This is an independent contractor / hourly engagement only and does not include full-time employment, salary, benefits, equity, revenue share, product ownership, or any ongoing engagement beyond the agreed scope.