Project Description We’re building Nexa, an AI-powered platform for managing field service and on-site repair operations. The MVP must cover the full operational flow — from order creation to completion — and include first integrations with routing and field data capture. The system connects technicians (“masters”) and B2B clients, automates logistics, captures verified photo/video evidence for each job, and provides real-time visibility via a lightweight internal dashboard. Scope of Work (MVP, up to 1 month; target ~3 weeks) Master onboarding & profiles • Role-based access (Master / Operator / Admin), verification, rating. Order workflow • Create → Assign → Track → Complete; live status updates; notes/history. AI Documentor Layer (ADL) • Upload/tag photos & videos with GPS + timestamp. • Mandatory evidence before closing an order; link media to order. AI Route Engine (base) • Smart assignment of nearby masters considering workload, rating, SLA. • Route optimization via Google Maps / OpenStreetMap. Mini CRM / Dashboard • Orders list, SLA tracking, master performance, quick filters. Telegram bot integration • Notifications + basic commands for masters (accept/arrive/complete). Preferred Tech Stack Backend: Python (FastAPI) or Node.js (Nest.js) Frontend: React / Next.js (PWA-ready) Mobile: Flutter or React Native (single codebase) DB: PostgreSQL + Redis (caching, queues) Cloud: AWS / GCP (containerized deployment) Auth & Security: JWT, HTTPS, encrypted media storage, RBAC Architecture should be modular and clean; each module isolated and ready to scale. Deliverables Working MVP (web + mobile) matching the scope Staging deployment with basic monitoring/logging Source code in private repo + concise docs (API, data model, architecture diagram) Short “next steps” note on scaling/performance Selection Process (2 steps — both short and unpaid) Test 1 — Architecture Design (~1.5 h): Provide a concise modular scheme showing how ADL, Route Engine, and the dashboard/CRM connect via APIs (components, data flows, storage, auth). Test 2 — Prototype Challenge (6–8 h): Build a minimal flow: Create order → Assign master → Capture ADL photo/video → Close order (Seed data or simple mocks allowed; clarity and code quality valued.) Budget & Timeline Budget: ~USD 2,300 (fixed for MVP) Timeline: Up to 1 month (target completion ~3 weeks) Long-term collaboration possible for post-MVP modules. Skills / Tags Python, FastAPI, Node.js, Nest.js, React, Next.js, Flutter, React Native, PostgreSQL, Redis, AWS, GCP, REST APIs, Maps API, Telegram Bot, CRM/Logistics systems, PWA, RBAC. What to Include in Your Proposal Links to GitHub/portfolio with relevant modular/CRM/logistics work Your preferred stack and a brief note on your architectural approach Confirmation of availability for the two evaluations within the next 7–10 days