You will get AI SaaS, LLM/RAG & Automation PoC — Validated & Shipped in 72 Hours
Top Rated
Project details
You have an AI idea, automation workflow, or SaaS concept. You need to know — fast — if it works, what it costs, and whether the architecture holds under real users.
In 72 hours, you get a working proof of concept: built, validated, production-ready in direction.
⚡ What you get:
✅ Working prototype — not a mockup, not slides
✅ LLM/RAG feature, AI agent, SaaS scaffold, or automation pipeline
✅ Architecture decisions documented — what to build next and why
✅ Feasibility report — cost, latency, risk, production path
✅ Clean codebase you can extend or hand off
🛠️ What I PoC for you:
→ LLM/RAG — OpenAI, Claude API, LangChain, pgvector, vector search
→ AI SaaS MVP — multi-tenant, auth, Stripe billing, onboarding
→ Automation — n8n, Make, AI pipelines replacing manual ops
→ Flutter or React Native — cross-platform in 72h skeleton
→ Backend — FastAPI, Node.js, Supabase, PostgreSQL, queues
🏆 Top Rated Plus · 100% Job Success · $200K+ earned · 12+ years
No account managers. Work directly with me. Send what you're building — I'll respond with architecture and next steps same day.
In 72 hours, you get a working proof of concept: built, validated, production-ready in direction.
⚡ What you get:
✅ Working prototype — not a mockup, not slides
✅ LLM/RAG feature, AI agent, SaaS scaffold, or automation pipeline
✅ Architecture decisions documented — what to build next and why
✅ Feasibility report — cost, latency, risk, production path
✅ Clean codebase you can extend or hand off
🛠️ What I PoC for you:
→ LLM/RAG — OpenAI, Claude API, LangChain, pgvector, vector search
→ AI SaaS MVP — multi-tenant, auth, Stripe billing, onboarding
→ Automation — n8n, Make, AI pipelines replacing manual ops
→ Flutter or React Native — cross-platform in 72h skeleton
→ Backend — FastAPI, Node.js, Supabase, PostgreSQL, queues
🏆 Top Rated Plus · 100% Job Success · $200K+ earned · 12+ years
No account managers. Work directly with me. Send what you're building — I'll respond with architecture and next steps same day.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,500
|
Advanced
$3,000
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Frequently asked questions
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ES
Evan S.
Jun 12, 2026
Senior Full-Stack Engineer (Next.js / Supabase / AI / Stripe / Twilio) - Phased Build ($10k cap)
I hired Igor to build DearHim and honestly he exceeded what I thought was possible on the timeline we had. It’s not a simple app — web plus iOS, payments, auth, AI, SMS, streaming chat, the whole production setup — and he handled all of it, backend to deployment.
What I appreciated most is that he actually cares. He doesn’t just close tickets, he thinks about whether something’s actually right, and he’ll find the better solution instead of the quick one. Launch week got hectic, as these things do, and he stayed calm and just kept knocking things out until we were live.
I’m already building two more projects with him, which probably tells you everything. If you need someone who’ll take real ownership of something complicated, hire Igor. You won’t regret it.
What I appreciated most is that he actually cares. He doesn’t just close tickets, he thinks about whether something’s actually right, and he’ll find the better solution instead of the quick one. Launch week got hectic, as these things do, and he stayed calm and just kept knocking things out until we were live.
I’m already building two more projects with him, which probably tells you everything. If you need someone who’ll take real ownership of something complicated, hire Igor. You won’t regret it.
BW
Beau W.
Apr 7, 2026
React Native Developer for Interactive 3D Globe Feature
Igor was a pleasure to work with and would highly recommend working with him.
LS
Leo S.
Mar 31, 2026
Looking for Flutter developer to build simple data entry app.
Great work, all done on time and according to spec.
SS
Sergey S.
Apr 23, 2025
Build a desktop app for Static.app to sync website files using Flutter.
Absolutely — here’s a warmer, more human version with a natural tone:
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Working with Igor was honestly a fantastic experience. Not only did he deliver everything *ahead of schedule*, but he also went the extra mile and did even more than what we initially asked for — and it was all done with great attention to detail.
He’s super communicative, easy to work with, and clearly takes a lot of pride in what he does. You don’t often come across someone this reliable and proactive. It felt like he
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Working with Igor was honestly a fantastic experience. Not only did he deliver everything *ahead of schedule*, but he also went the extra mile and did even more than what we initially asked for — and it was all done with great attention to detail.
He’s super communicative, easy to work with, and clearly takes a lot of pride in what he does. You don’t often come across someone this reliable and proactive. It felt like he
JS
João S.
Jan 24, 2023
Flutter Developer
About Igor
AI SaaS Architect | Full Stack Developer | LLM/RAG Automation
100%
Job Success
Sveti Vlas, Bulgaria - 11:40 am local time
Founders and CTOs don't call me first. They call after the offshore agency delivered a half-working prototype. After the generalist ran out of depth. When the stakes are too high to get it wrong again — that's when they call me.
I work like a technical co-founder: I understand your business problem as clearly as the technical one. No account-manager layer, no junior handoff. You work directly with senior engineering across architecture, implementation, deployment, and the post-launch fixes that real systems always need.
Over 70% of clients come back for another engagement — because trust is easier to earn through delivery than through proposals.
📈 PRODUCTION RESULTS
✅ n8n + GPT-4 replaced a 12-person workflow — 10,000+ records/day at 99.2% accuracy, saving $380K/year. Shipped in 3 weeks.
✅ Flutter + Node.js fintech SaaS processing $2M+/month — 3 years ongoing, same client.
✅ React + LangChain legal AI tool — cut attorney document review time by 73%.
✅ Next.js + Supabase multi-tenant SaaS with Stripe — zero to $45K MRR in 5 months.
✅ Cross-platform Flutter app — 50,000+ active users across iOS, Android, and desktop.
✅ OCR + GPT-4 + LangChain document pipeline for logistics — 8x throughput, same headcount.
✅ HIPAA-compliant clinical RAG system — delivered in 5 weeks.
✅ Loan-decision latency cut from 4.2s to 280ms for a Series-A lender.
✅ Author of ngx-mask — 2M+ monthly npm downloads, used in fintech, healthcare, and enterprise SaaS worldwide.
🛠️ WHAT I BUILD
→ LLM/RAG features — OpenAI, Claude, Gemini, ChatGPT, RAG pipelines, AI agents, multi-agent systems, agentic workflows, semantic search, vector databases, embeddings. Evals, latency, observability, fallback paths included.
→ AI SaaS platforms, MVPs & PoCs — multi-tenant architecture, Stripe billing, RBAC, onboarding, analytics, CI/CD. From validated PoC to production-grade platform without rebuilding from scratch.
→ AI workflow automation — n8n + LLM pipelines replacing manual ops, copy-paste, spreadsheet cleanup, CRM updates. Human-in-the-loop review flows. 10,000+ records/day at 99%+ accuracy.
→ Cross-platform apps — Flutter developer, React Native developer, Expo. iOS, Android, web, and desktop from one codebase. Real backends, auth, payments, analytics. 50K+ users delivered.
→ Production backends — Node.js developer, NestJS, FastAPI, Next.js API routes, Supabase, PostgreSQL, event-driven architecture. Fintech, legal tech, healthtech, logistics — compliance-ready from day one.
→ Codebase rescue & audit — stalled builds, prototype rewrites, architecture reviews. Salvaged a $200K stalled build in 3 weeks.
🏭 INDUSTRIES
→ FinTech AI — underwriting automation, payment flows, real-time risk scoring, compliance-ready backends.
→ HealthTech AI — HIPAA-compliant RAG, clinical document processing, patient-facing AI workflows.
→ Legal AI — contract review, document intelligence, LLM-powered research tools.
→ Logistics & E-commerce — OCR pipelines, routing automation, AI-powered search, inventory automation.
→ RevOps & Enterprise SaaS — AI lead scoring, CRM automation, multi-tenant platforms, developer tooling.
⚙️ TECH STACK
🤖 AI/LLM: OpenAI API · ChatGPT · Claude API · Gemini · GPT-4 · LangChain · LangGraph · LlamaIndex · Pinecone · pgvector · RAG · Prompt Engineering · Vector Search · Embeddings · AI Agents
🖥️ Frontend: React developer · Next.js developer · TypeScript developer · Angular · Tailwind CSS · Flutter developer · React Native developer · Expo
🔧 Backend: Node.js developer · NestJS · Python developer · FastAPI
🗄️ Databases: PostgreSQL · Redis · MongoDB · Supabase · Firebase
☁️ Cloud: AWS · Docker · Kubernetes · GitHub Actions · Vercel · CI/CD
⚡ Automation: n8n · Make · Zapier
🚀 WAYS TO START
→ AI SaaS PoC in 72 hours — validate before committing full budget. Fixed scope, fixed price.
→ MVP in 2–4 weeks — production-grade from day one. Not a prototype.
→ LLM/RAG system in 2–4 weeks — production-ready, not a demo.
→ SaaS web app — Next.js developer + Supabase + Vercel, Stripe, auth, RBAC, CI/CD.
→ AI automation pipeline — n8n + LLM replacing manual ops. Shipped and running.
→ Codebase rescue — stalled build, architecture audit, prototype rewrite.
→ Architecture consultation — 60-min deep-dive into your AI strategy or SaaS system design.
🚫 NOT THE RIGHT FIT IF YOU need execution without architectural thinking, are optimizing for the lowest rate over ROI, or want someone who disappears at handoff.
📩 READY TO BUILD? Send me what you're building, where you're stuck, and what done looks like. I'll respond with the right questions, a proposed architecture, and clear next steps — usually within a few hours.
Steps for completing your project
After purchasing the project, send requirements so Igor can start the project.
Delivery time starts when Igor receives requirements from you.
Igor works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Scope Alignment
We align on your idea, define the core hypothesis to validate, and confirm the exact scope — no fluff, no over-engineering. This sets the foundation for 72-hour delivery.
AI-Accelerated Development
Using AI-assisted tooling and a proven rapid-build stack, I build your PoC at up to 10× standard speed — without cutting corners on code quality or architecture decisions.