Building a "MVP" for an SaaS "accelerator"

I’m building an MVP for Ainergy, a SaaS platform for startups and investors. I need a strong Full-Stack Engineer / Solution Architect who can build the core platform and integrate: Frontend: Next.js / React Backend: scalable API architecture ERPNext/Frappe: finance, operations, and company data GoHighLevel: CRM, sales, marketing, automation, and sub-accounts AI Agents: HighLevel Agent Studio/API and external AI agents when needed Authentication & RBAC: founders, investors, admins, and company team members Multi-tenancy: each startup/company must have isolated data, users, roles, and permissions Webhooks + APIs: reliable two-way synchronization between Ainergy, ERPNext, and GoHighLevel Security: encrypted credentials, tenant isolation, audit logs, retries, and idempotency The key requirement is that Ainergy must remain the main platform/interface, while ERPNext and GoHighLevel operate as integrated backend systems. The frontend should NOT connect directly to either system. For the MVP, I want to start with a small paid technical milestone to validate the architecture and integrations before moving to the full build. If you have strong experience with ERPNext/Frappe + GoHighLevel APIs + SaaS/multi-tenant architecture + AI integrations, please send me 2–3 relevant projects you have built and briefly explain your role in each.