Product Engineering/01
Full-Stack Engineering
End-to-end from the database to the last pixel. Next.js, Python and TypeScript stacks that hold under load.
- Next.js 14 / 15 · App Router · SSR i18n
- FastAPI · PostgreSQL · PgBouncer · Redis
- Auth & RBAC (JWT, OAuth2, magic links)
- Admin portals, customer dashboards, public sites
- Performance budget · Core Web Vitals · a11y
↳ Same DNA as our portfolio projects: Cases 01, 03.
Scale Infrastructure/02
Data Engineering & Scale Crawling
Distributed pipelines that run 24/7. Millions of records, hundreds of sources, resilient daemons with auto-recovery.
- Multi-server clusters with a daemon-keeper pattern
- Playwright · ATS / API integrations · geo-discovery
- Shard-based enrichment pipelines, idempotent
- Residential proxy stacks · rate-limit management
- Observability: structured logs · Telegram alerts · health checks
↳ Case 01 rests on this foundation: 2.5 M records · 7-server cluster.
Applied Intelligence/03
ML & AI Systems
Models that stay in production. Feature engineering, LSTMs, XGBoost, HMMs — calibrated for precision, not for show.
- Composite scoring (weighted risk indicators)
- Time series: LSTM · HMM regime detection
- Classification: XGBoost · feature selection
- Confidence-based inference (not every signal is traded)
- Backtesting frameworks · model monitoring
↳ Cases 03, 05 show ML live in production.
On-Chain/04
Smart Contracts & DeFi
Audit-ready Solidity. 100 % contract coverage, Hardhat workflows, Arbitrum-optimised gas footprint.
- Solidity 0.8.24+ · OpenZeppelin · upgradable proxies
- Hardhat · Foundry · Forge fuzzing
- The Graph subgraphs · Ethers.js v6
- Dynamic NFTs · RWA adapters · insurance pools
- Internal audit reports · production-readiness checks
↳ Case 02: RWA-backed yield protocol with 407 tests and 96 % coverage.
Markets/05
Trading Systems & Fintech
Trading logic under real-world conditions. Odds compilation, risk management, signal pipelines, execution layer.
- Odds aggregation & sharp-bettor detection (B2B)
- Real-time book balancing · liability monitoring
- Crypto futures: signal generation + execution
- WebSockets · Prometheus / Grafana · sub-second alerts
- Stripe billing · subscription management
↳ Cases 03, 04, 05 run on this stack.