Arthur B.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I build AI agents that automate outreach, response handling, and internal workflows. 12 years of backend engineering (Python, Rust) + production AI agent systems. 100% Job Success Score on 12+ contracts. Real numbers from real projects: • Crawled 700M+ domains in a single distributed pipeline (DNS, WHOIS, screenshots, tech-stack fingerprinting, email extraction) — 43 TB of data across 12 servers • Scraped the 3 largest UK real-estate directories into a 4.3 TB schema: listings, image archives, historical sales • Cut a Django hot-path endpoint from 15.5 s → 19 ms (~815× faster) • Drove cost-per-GB on a B2B mobile-proxy product down by 20× • Currently shipping ~90 merged MRs at a Series-A SaaS — Django + Rust (PyO3) + Kubernetes + Triton ML serving What I deliver: ▸ Full source code and instructions to run the code. Upkeep, hosting, maintenance (or instructions on them). ▸ Backend & APIs — Django, DRF, FastAPI, Flask, Celery. REST APIs that power dashboards, mobile apps, or internal tools. Postgres, MongoDB, Redis, ClickHouse. ▸ Performance & rescue work — optimized endpoints, fast Celery queues, SQL speedup and more.. I eliminate the bottleneck before it appears. ▸ Full-stack when needed — Vue.js, React, TypeScript on top of the APIs I build. Stripe integrations, OAuth, webhooks. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Why clients like me? (no idea) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • 100% Job Success across every contract — no walk-aways, no drama • Long-term clients (multi-year engagements, not one-shot gigs) • I write a plan before I write code, and I tell you when something is a bad idea — even when you're paying me to do it • Async, reliable communication. I deliver in writing, not in vibes. What I won't do: spam, ad fraud, DDoS, scraping with intent to violate ToS where it actually matters, or anything that puts your business at legal risk. Web scraping is legal when done right — I do it right. If you've got a backend that's buckling, a scraper that broke last week, or a data-extraction project nobody else wants to take on — send the details and I'll tell you straight whether I'm the right fit. — Arthur