Nenad Marković

AI Product Engineer · Founder · Operator

Nenad Marković

I design and ship production AI systems end to end: product definition, system architecture, LLM integration, data pipelines, and the infrastructure, billing and analytics that turn them into businesses.

Get in touch View resume (PDF)
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Operating

Evolución Studio ↗

Co-founder · Technical Lead 2026

Digital studio in Santiago, Chile. I own technical delivery end to end (requirements, architecture, build, deployment and client handover) and the AI-assisted process the studio builds on.

  • · Commerce app for a retail client: full iOS + Android shopping app for a collectibles store, from written spec to feature-complete in 9 days
  • · Catalogue, cart, checkout, orders, loyalty points, guest browsing and push notifications; a secure backend between the app and the store's WooCommerce so no store keys live on the device
  • · Three Chilean payment providers integrated (Webpay by Transbank, Mercado Pago, Khipu), with secrets in managed storage, App Check, and per-user order ownership checks
  • · AI-assisted delivery pipeline: spec-driven sprints that cut typical project turnaround from weeks to days
  • · Stack: Flutter, Firebase, Cloud Functions, Next.js, React, TypeScript, Supabase
Flutter Firebase Payments E-commerce Next.js Client delivery

Products

Akademus AI ↗

Founder · Sole Engineer Sold

AI study platform across iOS, Android and web. Engineered solo, scaled past 15,000 registered users, and exited as a going concern. Lecture recording and transcription, OCR scanning, import from PDF / audio / text / web, auto-generated notes and quizzes, spaced-repetition flashcards, AI chat grounded in the student's own material, and voice-based exam practice.

  • · Founder and sole engineer: product, UX, mobile and web clients, backend, transcription and OCR pipelines, and the retrieval-grounded chat layer
  • · Steady release cadence across both app stores; activation and retention driven through onboarding and in-product AI features
  • · Ran the business side too (auth, subscription billing, analytics, cloud data and support), through to exit
  • · Stack: Flutter, TypeScript, Node.js, FastAPI, Supabase, PostgreSQL, OpenAI + Anthropic APIs, RAG / vector search, Whisper, OCR
iOS Android Web Flutter RAG Speech-to-text Exit

Fluente AI ↗

Founder · Sole Engineer Sold

Spoken-language learning app: real-time voice conversation with an AI tutor, with adaptive correction and scenario practice. Engineered solo from first commit through App Store launch to exit.

  • · Real-time voice pipeline: low-latency speech-to-text → streamed LLM response → text-to-speech loop
  • · Full monetisation: Apple in-app subscriptions with complete lifecycle, auth, webhooks and event analytics
  • · Stack: Native iOS (Swift), TypeScript, Node.js, OpenAI + Anthropic APIs, streaming STT / TTS, Apple IAP
iOS Swift Voice AI Streaming Subscriptions Exit

Open source

Consulta Legal Chile ↗

Self-correcting RAG agent over ~6,000 passages of Chilean legislation. Hybrid vector + keyword retrieval, LLM reranking, and a grading loop that reformulates the query when an answer isn't grounded. Traced and evaluated. LangGraph, pgvector, FastAPI, Next.js.

2026

Selected experience

Full resume (PDF) →

Founder · Lead Instructor · AI Milioner

2023 – 2024

AI training company. Trained 800+ people to work with AI, from first prompt to production workflows. About $70,000 in revenue within eight months.

  • · Designed and delivered the curriculum solo: live sessions, recorded lessons and community support, for individuals and teams.
  • · Rewrote the material roughly every quarter as new models made old techniques obsolete.
  • · Built the automated sales and delivery system: ads → landing pages → evergreen webinars → checkout → course access → email follow-up.
  • · Ran Meta and Google Ads (€20,000+ spend, 10M+ impressions), including targeting, creative, tracking, copy and retargeting.

About

Product engineer and founder. I own AI products end to end: architecture, native mobile, web, backend, payments and the AI layer, through to production and scale.

In production: real-time voice (speech-to-text, streamed LLM, text-to-speech), retrieval-grounded chat over user documents, OCR and transcription pipelines, subscription billing across Apple, Google and Stripe, and local payment rails. Consumer products scaled to 15,000+ users and taken through acquisition.

Beyond engineering: product strategy, paid acquisition and AI enablement, with 800+ professionals trained. Currently technical lead at Evolución Studio.

Stack

  • Languages & Runtimes
    TypeScript, JavaScript, Python, Swift, Dart, SQL, Node.js
  • Web
    Next.js, React, FastAPI, Tailwind CSS
  • Mobile
    Flutter, Native iOS (Swift), App Store + Google Play releases
  • AI & LLMs
    OpenAI API, Anthropic API, AI agents, voice agents, RAG & vector search, STT / TTS, prompt & context engineering, eval loops
  • Data & Infra
    Supabase, PostgreSQL, Firebase, Vercel, Docker, Git & GitHub, REST APIs, webhooks, OAuth
  • Ship & Monetise
    Stripe, Apple In-App Purchases, Google Play Billing, subscriptions, local payment providers, event analytics
  • Growth
    Meta Ads, Google Ads, sales funnels, email automation, direct-response copywriting, curriculum design

Based

Belgrade, Serbia
Open to relocation

Languages

  • Serbian , native speaker
  • English , fluent (C1)

Education

Theoretical & Experimental Physics
University of Belgrade, Faculty of Physics · 2020 – 2023