Product Engineering/01
Full-Stack inženjerstvo
End-to-end od baze podataka do poslednjeg piksela. Next.js, Python i TypeScript stackovi koji ostaju stabilni pod opterećenjem.
- Next.js 14 / 15 · App Router · SSR i18n
- FastAPI · PostgreSQL · PgBouncer · Redis
- Auth i RBAC (JWT, OAuth2, magic linkovi)
- Admin portali, customer dashboardi, javni sajtovi
- Performance-budget · Core Web Vitals · A11y
↳ Ista DNA kao naši portfolio projekti: Cases 01, 03.
Scale Infrastructure/02
Data Engineering & Scale Crawling
Distribuirane pipeline-ove 24/7. Milioni zapisa, stotine izvora, otporni demoni sa auto-recovery.
- Multi-server klasteri sa daemon-keeper pattern-om
- Playwright · ATS/API integracije · Geo-discovery
- Shard-bazirani enrichment pipeline-ovi, idempotentni
- Residential proxy stackovi · rate-limit management
- Observability: strukturni logovi · Telegram alerti · health-checks
↳ Case 01 počiva na ovom temelju: 2,5 M zapisa · 7-server klaster.
Applied Intelligence/03
ML & AI sistemi
Modeli koji ostaju u produkciji. Feature engineering, LSTM, XGBoost, HMM — kalibrisani na preciznost a ne na šou.
- Composite scoring (težinski indikatori rizika)
- Time-series: LSTM · HMM regime-detection
- Klasifikacija: XGBoost · feature-selection
- Confidence-bazirana inference (ne svaki signal se trguje)
- Backtesting framework-ovi · model-monitoring
↳ Cases 03, 05 pokazuju ML uživo u primeni.
On-Chain/04
Smart Contracts & DeFi
Solidity spreman za audit. 100 % contract coverage, Hardhat workflow, Arbitrum-optimizovan gas.
- Solidity 0.8.24+ · OpenZeppelin · upgradable proxies
- Hardhat · Foundry · Forge fuzzing
- The Graph subgraphs · Ethers.js v6
- Dinamički NFT-ovi · RWA adapteri · insurance pool-ovi
- Internal audit report-i · production-readiness checks
↳ Case 02: RWA-bazirani yield protokol sa 407 testova i 96 % coverage.
Markets/05
Trading sistemi & Fintech
Trgovačka logika u realnim uslovima. Odds compilation, risk management, signal pipeline-ovi, execution layer.
- Odds agregacija i sharp-detection (B2B)
- Real-time book-balancing · liability-monitoring
- Crypto futures: generisanje signala + execution
- WebSockets · Prometheus/Grafana · sub-sekundni alerti
- Stripe billing · subscription management
↳ Cases 03, 04, 05 rade na ovom stacku.