Full-stack developer for real estate lead platform + iOS/Android apps (long-term)

About the project I'm launching a discount real estate brokerage. Sellers list with us at a below-market commission and still get full service. Our platform captures seller leads through paid advertising, routes them automatically to our agents, and tracks every property from the first ad click through to closing. We launch in Quebec, expand to Ontario, and eventually into US markets. The platform must be built multi-jurisdiction and multi-language from day one — adding a new province or state should be a configuration change, not a rebuild. I'm hiring one developer to build the entire system and stay on long-term as we grow. Scope Seller-facing: marketing site (French-first with English, architected for Spanish), savings calculator, intake and qualification flow, municipality landing pages, results page, agent profile pages, seller portal with document uploads and messaging. Agent-facing: portal with lead assignment, accept/decline with timeout, stage advancement, capacity limits, notifications, plus a separate agent recruiting funnel. Lead engine: a configurable workflow where I define, rename and reorder stages myself, with required fields and document requirements per stage. Automatic routing by jurisdiction, geography, capacity and round-robin, with full manual override. Nurture automation, referral tracking, and buy-side capture. Admin: complete oversight, workflow editor, jurisdiction manager, agent management, and attribution reporting from ad click through to closed sale. Mobile: native iOS and Android apps for agents and sellers, published to the App Store and Google Play. Architecture requirements Jurisdiction as a first-class entity — commission rates, workflow templates, terminology and legal disclosures all vary by jurisdiction and must be admin-configurable Full internationalization from the start: French and English at launch, Spanish-ready. Every string externalized, nothing hard-coded Quebec language law requires French-predominant public content, so French is the default experience, not a toggle All code in my GitHub repository from commit one; all third-party accounts in my name Stack: Next.js, TypeScript, Supabase or Postgres, Tailwind, React Native, Vercel. Open to your recommendation if you can justify it. Requirements Full-time availability Minimum 4 hours daily overlap with Eastern Time Daily written standups Demonstrated experience shipping multi-user platforms with role-based access At least two apps published to both app stores Milestones — 27 across 30 weeks Foundation (weeks 1-4) — $6,500 Brand identity, design system, full mockups of every screen — $4,000 Technical architecture, written and approved — $2,500 No code begins until I have approved both. Seller site (weeks 5-10) — $12,300 3. Marketing site, bilingual, Lighthouse 90+, SEO foundation — $3,500 4. Savings calculator — $2,000 5. Intake and qualification flow — $1,800 6. Municipality landing pages, template-driven — $1,800 7. Agent profiles, Our Listings, Results pages — $2,000 8. FAQ, How It Works, objection handling — $800 9. Speed-to-lead: instant SMS, callback widget, live chat — $1,000 10. Agent recruiting funnel — $1,200 Lead engine (weeks 10-16) — $9,500 11. Configurable workflow engine — $3,800 12. Automatic routing with capacity caps — $3,000 13. Manual override, bulk actions, hold queue — $1,200 14. Document management — $1,500 Agent side (weeks 15-19) — $5,200 15. Agent portal — $3,200 16. Notifications with escalation, bilingual — $2,000 Automation and oversight (weeks 18-22) — $10,000 17. Seller nurture automation and lead scoring — $1,500 18. Referral system and buy-side capture — $2,200 19. Admin console and jurisdiction manager — $3,300 20. Attribution and reporting, with full audit trail — $3,000 Mobile apps (weeks 20-28) — $15,000 21. React Native foundation, shared API, push, bilingual — $4,000 22. Agent app — $5,000 23. Seller app — $3,000 24. App Store and Google Play submission and launch — $3,000 Launch (weeks 28-30) — $4,500 25. QA across all surfaces, load testing, security review — $2,000 26. Social channel graphics and post templates — $1,500 27. Documentation, admin training, handover, 30-day support — $1,000 How I want to work I want a developer who pushes back. If I ask for something that's a bad idea, tell me. If you see a better way, propose it. I'll be involved daily and I expect us to refine as we go — the milestones define what gets delivered, not exactly how. This is the first build of something I intend to grow. The platform launches in Quebec, expands to Ontario, then other markets. After launch there is ongoing work: new jurisdictions, new features driven by what agents and sellers actually need, and continuous improvement of the lead engine. I'm looking for one long-term technical partner who cares whether this business succeeds — not someone who ships tickets and moves on. In your proposal, please answer these six questions: Link me to two multi-user platforms you built with role-based access and dashboards, plus two apps you've published. What was your role and how long did each take? How would you model jurisdictions so that adding Ontario after we've launched in Quebec requires no code changes? How would you architect lead routing so a lead reaches the right agent within 60 seconds — and what happens when they don't respond? How would you track a lead from ad click through to closed sale so I can calculate my true cost per closing? What is your time zone, your current client load, and when could you start? Tell me about a time you talked a client out of something they wanted. What did you propose instead, and how did it turn out? I only read proposals that answer all six. Generic proposals will be ignored.