Alex P.

🌟 Top 1% on UpWork 🌟 5 Star Feedback ✅ On-time delivery every-time I build production AI systems - multi-tenant SaaS platforms, autonomous AI / voice agents, and the automation layer that holds them together. Not demos. Systems with real users, real money moving through them, and uptime that matters. Did I say these were also secured and stored on AWS, Azure, Hetzner and Digital Ocean. Training new model or running Orpheus vLLM on RunPod - I handle this too. Most "AI experts" can wire up an API call. The hard part is everything after: multi-tenancy, auth, job queues, retries, cost control, audit trails, penetration testing - and the thing still working at 3am on a Sunday. That's what clients hire me for. 🏗️ WHAT I'VE SHIPPED (production, last 12 months) AI case-management SaaS for US immigration law firms Multi-tenant NextJS platform. Tenancy enforced at the database layer with Postgres row-level security, so one firm physically cannot read another's data. 390+ API endpoints, 45 background AI workers (document extraction, draft generation, deadline monitoring, packet assembly), RAG over case files with Qdrant, Claude-powered drafting and form-filling, automated PDF assembly. 220+ tracked migrations. Communications + commerce super-app (iOS / Android / macOS / Web) 76 backend services behind a single Flutter codebase: real-time messaging, LiveKit voice & video, an LLM agent gateway exposing 130+ tools, card issuing (Stripe + Wallester), Stripe Connect payouts. 740+ migrations. Fleet telematics + booking system GPS trackers → ingest layer → custom API → mobile app. Remote locking and immobiliser commands, authorised against live bookings 🚀 WHAT I BUILD FOR CLIENTS AI SaaS platforms - the whole product, not a wrapper. Auth, tenancy, billing, admin, background jobs, observability. LLMs where they add value, deterministic code where they don't. AI agents that do work, not chat - voice agents (VAPI / LiveKit) that qualify and book, document agents that read contracts and PDFs and return structured data you can act on, RAG assistants grounded in your own files. Revenue automation - lead capture → enrichment → AI scoring → CRM routing → follow-up across email/SMS/WhatsApp. Make, n8n, Zapier or custom code, chosen by what the job needs. Data extraction at scale - competitor pricing, lead lists, product catalogues, listings. Playwright / Puppeteer / Scrapy with proxy rotation and anti-detection, delivered as a live feed your systems consume, not a CSV you re-upload. I specialise in the integrations other people gave up on: legacy systems, undocumented APIs, half-finished builds someone else abandoned. 📈 CLIENT RESULTS → Immigration Law firm - Full SaaS challenger to 60M+ industry whales handling thousands of cases across US → Medical billing: $2.5M → $5M monthly revenue (30 automations, 7 systems integrated) → Law firm: $140k/year saved - bulk contract workflow, 1,000+ contracts/month → Ambulance service: $100k saved on HR automation across 6 locations → E-commerce: 40% pricing advantage from automated competitor monitoring → Real estate: 3x appointment bookings with voice AI + GoHighLevel → B2B SaaS: 85% better lead quality via enrichment + AI scoring 🔧 Tech stack: AI: Claude · GPT · OpenRouter · RAG (Qdrant/pgvector) · MCP servers · VAPI · LiveKit Backend: TypeScript/Node · Python (FastAPI) · PostgreSQL + RLS · Redis/BullMQ · Docker · REST/webhooks Apps: NextJS · React · Flutter (iOS/Android/macOS/Web) Automation: Make · n8n · Zapier · Airtable · GoHighLevel · Clay Scraping: Playwright · Puppeteer · Scrapy · BeautifulSoup · Apify · Bright Data CRM & payments: HubSpot · Pipedrive · Close · Zoho · ActiveCampaign · Stripe (+ Connect) · PayPal · Square Infra: Cloudflare (R2/Workers) · Traefik · Hetzner/DO · CI/CD Industries: Medical (HIPAA), Legal, Real Estate, E-commerce, B2B SaaS, Logistics AI Agents · LLM Integration · SaaS Development · RAG · Workflow Automation · Make · n8n · API Development · Web Scraping · Voice AI · NextJS · Python · Flutter · PostgreSQL ⭐ What clients say: "Completed earlier than expected. Saved us $140k annually." "Strategic thinker who made our processes faster and simpler." "Best SaaS investment we've made." ✅ GOOD FIT: a real business problem, a budget that matches a production system, and you want one senior person accountable end to end. ❌ NOT A FIT: cheapest bid wins, an AI demo for a pitch deck, or "we'll figure the scope out as we go" with no decision-maker. 💬 Send me the workflow or product costing you the most. I'll reply with how I'd build it, what it takes, and whether it's worth building at all - before you spend anything. 📍 EST timezone · Fixed-scope builds and ongoing retainers